TDA7528 STMicroelectronics, TDA7528 Datasheet

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TDA7528

Manufacturer Part Number
TDA7528
Description
IC FRONT END MODULE CAR 64-LQFP
Manufacturer
STMicroelectronics
Datasheets

Specifications of TDA7528

Frequency
50kHz ~ 108MHz, 161MHz ~ 163MHz
Modulation Or Protocol
AM, FM
Applications
Automotive Audio
Current - Receiving
175mA
Data Interface
PCB, Surface Mount
Voltage - Supply
3.3V, 5V
Operating Temperature
-40°C ~ 105°C
Package / Case
64-LQFP
Operating Temperature (min)
-40C
Operating Temperature (max)
125C
Operating Temperature Classification
Automotive
Package Type
LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
-
Sensitivity
-
Memory Size
-
Data Rate - Maximum
-
Antenna Connector
-
Lead Free Status / Rohs Status
Compliant

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Features
Description
The TDA7528 is a front-end module for use in car
radio receivers with digital IF processing, using
the STA3004, respectively the STA3005 backend
IC.
Table 1.
December 2009
High-performance AM/FM front-end chip for IF-
sampling car-radio tuners
Compatible with AM(LW, MW, SW) / FM(EU,
US, JAPAN, OIRT) / Weather Band / HD-Radio
/ DRM applications
Ready for multi-tuner applications (phase
diversity, background tuner)
Dual input FM-mixer with high image rejection,
specialized for different front-end circuits
Integrated AM preamplifier and tank for lower-
cost applications
Fully integrated tuning PLL with two VCO's for
diversity systems
World tuning capable
Integrated IF tank
AGC controlled IF amplifier with four inputs for
connection of up to four ceramic filters
Fully electronically adjustable
I
2
C/SPI controlled
Order code
TDA7528
FM/AM car-radio receiver front-end for IF-sampling systems
Device summary
LQFP64 exposed pad (10x10x1.4 mm)
Doc ID 13141 Rev 6
Package
Its field of use includes all the current radio
broadcast services in the range of 50kHz to
163MHz for AM radio, FM radio and US weather
band. Digital standards such as DRM and HD
radio can also be handled. A single
supterheterodyne architecture with 10.7 MHz IF-
frequency provides high dynamic range.
The IMR mixer has separate input and output
stages for AM frequency bands up to 30 MHz and
for FM frequencies above 30 MHz.
The integrated AM-preamplifier and the fully
integrated low-pass filter enable low cost
applications. Two FM inputs with different noise /
IP3 parameter, provide full flexibility for the pre-
stage circuitry. Each mixer output is able to drive
two IF-filters, which can be selected by the
different IF-amplifier inputs.
The fast tuning PLL controls two different VCO,
which are designed to operate without frequency
overlap.
with fully integrated VCO
LQFP64
Packing
Tray
TDA7528
www.st.com
1/65
1

Related parts for TDA7528

TDA7528 Summary of contents

Page 1

... AGC controlled IF amplifier with four inputs for connection four ceramic filters ■ Fully electronically adjustable 2 ■ I C/SPI controlled Description The TDA7528 is a front-end module for use in car radio receivers with digital IF processing, using the STA3004, respectively the STA3005 backend IC. Table 1. Device summary Order code TDA7528 December 2009 ...

Page 2

... IMR and active balun . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 FM AGC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 AM LNA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 th Switchable LPF 4 order . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 IMR and active balun . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 AM AGC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 IF-Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 IF-AGC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 IF buffer amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 VCO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Reference oscillator / reference frequency input buffer . . . . . . . . . . . . . 32 Divider . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Phase frequency detector and charge pump . . . . . . . . . . . . . . . . . . . . . 33 Doc ID 13141 Rev 6 TDA7528 ...

Page 3

... TDA7528 3.9 D/A-converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 3.10 A/D-converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 3.11 GPIO - general purpose I/O interface pins . . . . . . . . . . . . . . . . . . . . . . . . 36 3.11.1 3.11.2 3.11.3 4 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 5 Programming information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 5.1 Address organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 5.2 Data byte specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 5.2.1 5.2.2 5.2.3 5.2.4 5.2.5 5.2.6 5.2.7 5.2.8 5.2.9 5.2.10 5.2.11 5.2.12 5.2.13 5.2.14 5 ...

Page 4

... Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 7 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 4/65 Divider R LSB (24/40 Charge pump current ( Tuning DAC 1 ( Tuning DAC 2 ( Different controls ( filter adjust ( Misc 3 ( converter test ( Read 1 (48 Read 2 (49 Doc ID 13141 Rev 6 TDA7528 ...

Page 5

... TDA7528 List of tables Table 1. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Table 2. Pin function description Table 3. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Table 4. General parameters electrical characteristics Table 5. Voltage sag detection electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Table 6. Voltage regulator electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Table 7. IMR and active balun electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Table 8. FM-AGC electrical characteristics Table 9 ...

Page 6

... Charge pump current ( Table 56. Tuning DAC 1 ( Table 57. Tuning DAC 2 ( Table 58. Different controls ( Table 59. AM filter adjust ( Table 60. Misc 3 ( Table 61. AD converter test ( Table 62. Read 1 (48 Table 63. Read 2 (49 Table 64. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 6/65 Doc ID 13141 Rev 6 TDA7528 ...

Page 7

... TDA7528 List of figures Figure 1. Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Figure 2. Pinout diagram (top view Figure 3. FM AGC - Controlled current output mode Figure 4. FM AGC - Controlled current output mode Figure 5. FM AGC - Controlled Voltage / current output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Figure 6. AM AGC - Controlled current output mode Figure 7. AM AGC - Voltage and current mode with hand-over . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Figure 8 ...

Page 8

... Summary The TDA7528 is a front-end module for use in car radio receivers on the 50 kHz - 108 MHz and 161 MHz - 163 MHz frequency bands. Its field of use includes all the current radio broadcast services worldwide on long, medium and short wave, CB radio, FM radio on the OIRT, Japanese and ITU frequency bands and the American weather band ...

Page 9

... TDA7528 1.2 Block diagram Figure 1. Block diagram Doc ID 13141 Rev 6 Product description 9/65 ...

Page 10

... FM AGC voltage output / alternative GP7 output FMAGC1 FM AGC current output for PIN diode FMMIX2in FM Mixer input – low gain stage = mode2 Doc ID 13141 Rev GNDDIF 47 TCIFI 46 IFout1 45 IFout2 44 BIASD2 43 VDDdec 42 VCCBUS 41 MISO 40 MOSI 39 CLK 38 CS/ GNDBUS 35 VCCRO 34 XTAL0 33 XTAL1 TDA7528_LQFP64_PinOut Description TDA7528 ...

Page 11

... TDA7528 Table 2. Pin function description (continued) Pin # Pin name FMMIX2dec FM Mixer decouple GNDRF1 GND RF1 section AMAGC1 AMAGC PIN diode driver output AMMIXdec AM mixer decouple AMMIXin AM mixer input AMFdec Decoupling of AM filter AMFin Input of AM filter AMLNAout AM LNA output GP4/UDS GPIO 4 / UDS input ...

Page 12

... IF input analog input) GP5/IFbuff GPIO buffer amplifier output GNDRF2 GND RF2 section = active balun GND TCAM AM AGC time constant TCFM FM AGC time constant VCCRF2 Supply voltage RF2 section Balunout1 Active balun output output Balunout2 Active balun output output Doc ID 13141 Rev 6 TDA7528 Description ...

Page 13

... TDA7528 3 Electrical characteristics 3.1 Absolute maximum ratings Table 3. Absolute maximum ratings Symbol V Supply voltage CC V Supply voltage DD T Ambient temperature range amb T Storage temperature s T Max. junction temperature j Operating temperature and supply voltage range: -40 °C to 105 °C; 4 5.35 V. All specification parameter are fulfilled in this temperature and supply voltage range, unless otherwise specified ...

Page 14

... Power management and voltage regulator The TDA7528 has a single 5 V supply. The 3.3 V supply for the VCO must be derived from an external NPN transistor controlled by the internal voltage regulator also possible to use an external 3.3 V regulator. In this case, special care has to be taken on this 3.3V . ...

Page 15

... TDA7528 indirect by measuring the DAC1 (9 bit) output voltage for DAC1=0x200 or the DAC2 (8 bit) output voltage for DAC2=0x100). The PWR_STABLE functionality can be switched on/off. The default value is the switched off mode. Table 5. Voltage sag detection electrical characteristics Symbol Parameter V Min. supply voltage threshold ...

Page 16

... Red. current: reg14[ 1dB below 1dB compression point Mode 1 Mode 2 1dB below 1dB compression point Rsource=1.5 kΩ, noiseless in 65 MHz-170 MHz range Rsource = 800 Ω, noiseless in 65 MHz-170 MHz range AGC noise behavior @ 6 dB attenuation Doc ID 13141 Rev 6 TDA7528 Typ Max Units ...

Page 17

... TDA7528 Table 7. IMR and active balun electrical characteristics (continued) (All parameter are referred to Balunout1, unless otherwise specified) Symbol Parameter rd 3 order intercept point Reg9[5:4]=00 (1) IIP3 rd 3 order intercept point in reduced current mode (1) nd IIP2 2 order intercept point IF- output attenuation IFattn ...

Page 18

... Vthr level is programmable in the range of 0 2.6 V. 18/65 Table 8). The currents can be selected independently Iout Iout 15mA 15mA f(e) current f(e) current f(e) current V_TCAGCFM V_TCAGCFM Iout Iout Iout 15m 15m 15m f(e) - current f(e) - current f(e) - current 1.65V 1.65V 1.65V Doc ID 13141 Rev 6 TDA7528 -1 ...

Page 19

... TDA7528 Figure 5. FM AGC - Controlled Voltage / current output 5. Calibration mode data byte FMAGC[3:0] = 0010 calibration mode for voltage output: The voltage Vthr can be switched directly to the voltage output pin. All other possible bit combinations of data byte FMAGC[3:0] are not recommended. The voltage output can be configured as GPO. ...

Page 20

... Mode A1 Mode A2 Mode A3 Mode D1 Mode D2 Mode µF, mode A2 AGCTC AGC conductance versus dB/V AGCTC µF, mode D2 AGCTC AGC conductance versus dB/V AGCTC Control input range = 0 Doc ID 13141 Rev 6 TDA7528 Min. Typ Max Units - - 0.2 V 0.4 -1 μA - -100 - -0.3 ...

Page 21

... TDA7528 3 Section 3.5.1 AM LNA Table 9. AM LNA electrical characteristics Symbol Parameter gm Transconductance - Gain error vs. frequency - Input impedance (1) vnoise Input noise voltage (1) rd IIP3 3 order intercept point nd IIP2 2 order intercept point AGC AGC range 1. Parameter not guaranteed by production test 3.5.2 Switchable LPF 4 Table 10 ...

Page 22

... For ext. LNA input - - 1 dB below 1 dB compression point Single tone two tone @4.6 V-4.7 V single tone two tone @ full gain 150 kHz-30 MHz @ full gain Reg14[5: °C junction temperature Doc ID 13141 Rev 6 TDA7528 Min. Typ Max Units nV/√ 137 140 - dBμV ...

Page 23

... TDA7528 Table 11. IMR and active balun electrical characteristics (continued) Symbol Parameter rd 3 order intercept point in - reduced current mode (1) nd IIP2 2 order intercept point - IF-output attenuation - IF rejection ( signal @ mixer input LO_IN LO signal @ balun output using mixer input V LO_OUT LO signal @ balun output, using low pass filter ...

Page 24

... Voltage and current mode with hand-over: the Vthr level is programmable in the range 0.2 to 2.6 V. The voltage Vthr is the internal reference voltage for the 24/65 Table 12). Iout Iout Iout 15mA 15mA 15mA f(e) current f(e) current f(e) current V_TCAGCAM V_TCAGCAM Iout Iout Vout Vout Vthr Vthr Vthr Vthr Doc ID 13141 Rev 6 TDA7528 -1 ...

Page 25

... TDA7528 external feedback to pin GP4/UDS. This mode can only be used with an external LNA. 4. Calibration mode for voltage output a) internal feedback data byte AMAGC[3:0] = 1110 calibration mode for voltage output (mode 3.a.): the voltage Vthr can be switched directly to the voltage output pin. The reference voltage is programmable in the range described in 3 ...

Page 26

... AGC control pin 2; voltage output AGC control pin load AGC control pin -50 µA load - - 6 bit - Mode T1 Mode T2 Mode T3 Active if control deviation is more than 1µF, mode T2 AGCTC (1) AGC conductance versus dB/V AGCTC Doc ID 13141 Rev 6 TDA7528 Min. Typ Max - - - 0 VCC-1.5 VCC-1 -0 ...

Page 27

... TDA7528 3 Section 3.6.1 IF-Amplifier Table 13. IF-Amplifier with anti aliasing filter and ADC buffer electrical characteristics Symbol Parameter Min. programmable gain Gain Max programmable gain Gstep Gain step Minimum gain of IF-Amplifier in AGC mode Gmin Input 1-3 Input 4 Gerr Gain error Cut off frequency without ...

Page 28

... With resistive load - @ Input impedance 2.5kΩ Doc ID 13141 Rev 6 TDA7528 Typ Max Units - 5 6 nV/√ 7.5 8.5 nV/√ Hz ...

Page 29

... TDA7528 3.6.2 IF-AGC The IF AGC system is controlled in AM with an average detector and in FM with a peak detector. The time constant is defined with two external capacitors and programmable internal currents (details given in the table below). The microcontroller can read the voltage at the AGC capacitor via the serial control interface ...

Page 30

... Step by step @ 10.7 MHz gain @ gain 3 dB,Vout=1 Vpp with 500 Ω ≤ R ≤ 600 Ω Test condition = 300 kHz = 100 kHz = 300kHz, loop PFD = 100 kHz Doc ID 13141 Rev 6 TDA7528 Min. Typ Max - - -1.5 1.5 - 8.5 15 ...

Page 31

... TDA7528 3.7.1 VCO Table 17. VCO electrical characteristics Symbol Parameter Frequency range VCO1 f osc Frequency range VCO2 - Phase Noise of LO Phase Noise min. requirements for AM,DRM (1) - Deviation error - KVCOmax/KVCOmin Power supply ripple rejection (1) PSRR ratio (1) V VCO signal emission VCO_OUT 1. Parameter not guaranteed by production test 2 ...

Page 32

... Hz @ 100 kHz @ 10 kHz @ 100 kHz @ 1 MHz Degradation generated by the oscillator - Single ended mode Single ended mode differential input - - - - - Test condition, comments 7 bit 22bit (32/33 pre scaler) 16 bit Doc ID 13141 Rev 6 TDA7528 Min. Typ Max - 74.1 - -20 -50 -80 - -110 - -130 < -130 < -130 - 200 ...

Page 33

... TDA7528 3.7.4 Phase frequency detector and charge pump Table 20. Phase frequency detector and charge pump electrical characteristics Symbol Parameter PFD f PFD input frequency PFD Charge pump Sink current fractional compensation only for low current modes (bit 5 – bit 8) I sink Source current ...

Page 34

... Electrical characteristics 3.9 D/A-converter The TDA7528 contains two D/A-Converters for tuning the filters of the FM pre-stage. The converter 1 has a resolution of 8 bit; converter 2 has a resolution of 9 bit. Table 22. D/A-converter electrical characteristics Symbol Parameter Output voltage minimum voltage V out Maximum voltage - Output impedance - Max ...

Page 35

... TDA7528 3.10 A/D-converter The TDA7528 contains a 6bit SAR A/D-Converter for sensing several analog values of the tuner. The following analog sources can be switched to the ADC input by software command: ● Temperature sensor ● TCFM ● TCAM ● TCIF1/2 (depends on which one is active) ● ...

Page 36

... Low level input voltage 3.11.1 Serial data interface The TDA7528 features a serial data port for communication with the microcontroller used to program the TDA7528 and to convey the read-out values of its detectors. This port supports data communication using the SPI and the I 36/65 GPIO functionality ...

Page 37

... Signal 5 MISO The "PS"-pin (Protocol Select) determines which communication protocol is used for communication between the microcontroller and the TDA7528. The information is not latched, so any level change at this pin immediately affects the protocol used by the TDA7528. 3.11.2 Communication using the I 2 For I C communication, pin " ...

Page 38

... indicates the address to write to and/or to read from a TDA7528 W = indicates those addresses that can be used to transmit equal data to several TDA7528s, e.g. to program an synchronous AF jump of two tuners. A read out has no purpose for these addresses. 3.11.3 Communication using the SPI protocol For SPI communication, pin " ...

Page 39

... TDA7528 Table 28. Communication using the SPI protocol electrical characteristics Parameter Input impedance Input signals, except AS,PS Power-on impedance All signals, except AS, PS Test condition Min. 100 100 Doc ID 13141 Rev 6 Electrical characteristics Typ Max Units - - kΩ kΩ 39/65 ...

Page 40

... Application information 40/65 TCIF2 49 IFdec 50 IFin4/GP3 51 VCCIF 52 IFIN3 53 BIASD1 54 IFin2 55 GP2 56 IFin1 57 GP5 58 GNDRF2 59 TCAM 60 TCFM 61 VCCRF2 62 BALUNout1 63 BALUNout2 64 Doc ID 13141 Rev 6 TDA7528 REFN REFP GNDRO 32 GP1 31 LL VCCP 30 GNDPLL 29 LFHC 28 LFLC 27 VCOGND 26 VCOdec2 25 Vtune 24 VCOdec1 23 VCCRF1 22 AMLNAgnd 21 AMLNAin 20 AMAGC2/GP8 19 /UDS GP4 18 ...

Page 41

... TDA7528 5 Programming information 5.1 Address organization Figure 9. Address organization Name No r/w Short reg r/w 0 ADCctrl r/w 1 GPIOmode r/w 2 AGCmixCtrl r/w 3 Supply r/w 4 DivR1 r/w 5 IFAGC r/w IFAGC_FM_AM 6 FMAGC r/w 7 r/w FM_AM_Vthr 8 MIXalign1 r/w 9 MIXalign2 r/w 10 PLLctrl r/w 11 PLLctrl2 r/w 12 PLLtest r/w ...

Page 42

... ADC off ADCstart N/A 1 Starts a single AD conversion ShPLL - - - - PLL register from are valid PLL register from are valid ShAGC - - - - AGC TC register 16 is valid AGC TC register 32 is valid Power stable - - - - N/A sets the power stable read bit - - - - Has Doc ID 13141 Rev 6 TDA7528 Function ...

Page 43

... TDA7528 5.2.2 ADCctrl (1) Table 30. ADCctrl (1) MSB LSB Temperature sensor power - - - 0 Enabled 1 Disabled ADC auto mode - - 0 - automatic restart disable 1 automatic restart enable RC oscillator enable - enable disable ADCstart (like bit 0.3) ADC input selection Temp sensor FM AGC AM AGC - - - - IF AGC VCO tuning voltage (3/5 * Vtune) ...

Page 44

... IF buffer amplifier = ON Digital output GPIO6 input / output - - - - Digital input (or MISO output in SPI mode) Digital output (or MISO output in SPI mode) GPIO7 input / output Digital output - - - - FM AGC voltage output GPIO8 input / output - - - - Digital output AM AGC voltage output Doc ID 13141 Rev 6 TDA7528 GPIO function ...

Page 45

... TDA7528 5.2.4 AGC and mixer control (3) Table 32. AGC and mixer control (3) MSB LSB Mixout All Off = power down mixer section - - 0 1 Mixout 2 active 1 0 Mixout 1 active 1 1 Forbidden state Has AGC On / Off - - - - Off On FM AGC On / Off Off - - - - On Keyed AGC enable - - - ...

Page 46

... Threshold of low voltage detection 0 4. 4.4V 0 4.5V 1 4.6V Divider R enable Divider R off; => DivR value = Divider R on Reference oscillator mode off - - - - single ended mode differential LVDS input controlled XO-mode LSB Divider R value X DivR8 : - - - : DivR15 Doc ID 13141 Rev 6 TDA7528 Divider R value Divider R value ...

Page 47

... TDA7528 5.2.7 IF AGC control (6) Table 35. IF AGC control (6) MSB 5.2.8 FM AGC (7) Table 36. FM AGC (7) MSB LSB section On / Off - - - 0 Off Has AGC threshold IF output level = 99dBµV(AM) / 105dBµV (FM) IF output level = 101dBµV(AM) / 107dBµV (FM output level = 113dBµV(AM) / 119dBµV (FM) ...

Page 48

... AMAGC voltage is derived from GP2 (for 2nd order lowpass function) AM fast attack - - - - Off On LSB IQ-filter frequency adjust +2.4MHz +1.8MHz -1.8MHz Only for test, has to be ‘0’ Has filter frequency adjust 20.00 MHz - - - - 14.75 MHz 10.87 MHz Doc ID 13141 Rev 6 TDA7528 Function Function ...

Page 49

... TDA7528 5.2.11 Mixer alignment 2 (10) Table 39. Mixer alignment 2 (10) MSB LSB IQ-filter gain adjust -0.7dB -0.6dB -0.5dB : : : : : 0dB 0dB : : : : : +0.6dB +0.7dB IQ-filter phase adjust 0 +0.2 deg +0.2 deg +0.4 deg +0.6 deg : +1.2 deg - - - - -1.2 deg -1.0 deg -1.0 deg -0.8 deg -0 ...

Page 50

... Only for test, has to be ‘0’ Current trimming of compensation DAC compensation current -44% compensation current -37.5 % compensation current -31.25% compensation current -25% compensation current -18. default current +/-0% compensation current +6.25% compensation current +12.5% compensation current +18.75% compensation current +25% : compensation current +50% optimum value Doc ID 13141 Rev 6 TDA7528 Function Function ...

Page 51

... TDA7528 5.2.14 PLL test (13) Table 42. PLL test (13) MSB 5.2.15 Misc 1 (14) Table 43. Misc 1 (14) MSB LSB PLL test - PLL in standard operation mode Only for test, has PFD - - - - Default delay settings - - - - Only for test, has LSB VCO magnitude default - - Current reduction of mixer ...

Page 52

... Only for test, has buffer amplifier enable buffer amplifier off 1 IF buffer amplifier on (GPIO5 need to be digital input) IF buffer amplifier input selector - - - - input = IFin1 input = IFin2 IF buffer amplifier gain -11dB -9dB -7dB - - - - -5dB -3dB : 3dB Doc ID 13141 Rev 6 TDA7528 Function ...

Page 53

... TDA7528 5.2.17 AGC time constant settings (16 / 32) Table 45. AGC time constant settings (16 / 32) MSB LSB AGC decay time constant (125ms (25ms (5ms) FM AGC attack time constant (12. (2. (0.5) AM AGC time constant T3 (125ms (25ms) T1 (5ms) IF AGC time constant (250µs attack (50µs attack) ...

Page 54

... Input level = 94.4 dBµV (mixer); 99.4 dBµV (filter Input level = 89 dBµV (mixer); 94 dBµV (filter) LSB GPIOx high / low output level 0 GPIO1 low 1 GPIO1 high 0 GPIO2 low 1 GPIO2 high : : : X GPIOx low / high : : : GPIO8 low GPIO8 high Doc ID 13141 Rev 6 TDA7528 Function Function ...

Page 55

... TDA7528 5.2.20 IF control (19 / 35) Table 48. IF control (19 / 35) MSB 5.2.21 VCO divider (V-divider) (20 / 36) Table 49. VCO divider (V-divider) (20 / 36) MSB Note: Effective V-divider value = 4*(V+4), V-patterns xxx0000 are not allowed. LSB input selection IF input AM IBOC (=IFin4 input FM IBOC (=IFin2 input AM analog (=IFin3) ...

Page 56

... PLL main divider (N-divider) 2 (22 / 38) MSB 5.2.24 PLL main divider (N-divider) 3 (23 / 39) Table 52. PLL main divider (N-divider) 3 (23 / 39) MSB 56/65 LSB Divider N value M10 M11 M12 M13 M14 M15 LSB Divider N value LSB Divider N value Doc ID 13141 Rev 6 TDA7528 Function Function Function ...

Page 57

... TDA7528 5.2.25 PLL Divider ratio calculation Table 53. PLL Divider ratio calculation M counter M16 M15 … M7 … M1 (1) 1. Bit M16 reg30 5.2.26 Divider R LSB (24/40) Table 54. Divider R LSB (24/40) MSB 5.2.27 Charge pump current (25 / 41) Table 55. Charge pump current (25 / 41) MSB counter ...

Page 58

... Tuning DAC 2 (27 / 43) MSB Note: DAC 2 output voltage = 600mV + DAC2val * 9mV 58/65 LSB DAC 1 voltage 7..0 X DAC1_0 X DAC1_1 X DAC1_2 DAC1_3 DAC1_4 DAC1_5 DAC1_6 DAC1_7 LSB DAC 2 voltage 8..1 X DAC2_1 X DAC2_2 X DAC2_3 DAC2_4 DAC2_5 DAC2_6 DAC2_7 DAC2_8 Doc ID 13141 Rev 6 TDA7528 Function Function ...

Page 59

... TDA7528 5.2.30 Different controls (28 / 44) Table 58. Different controls (28 / 44) MSB LSB DAC Off - - - 0 Off 1 On DAC Off - - 0 - Off Not used - - - DAC 2_0 - - - - Only for test, has Charge pump control - - - - high current controlled from phase error - default high current on VCO 1 / VCO 2 select ...

Page 60

... MHz 4.00 MHz 4.64 MHz 4.91 MHz 5.23 MHz 5.57 MHz 6.03 MHz 6.48 MHz 7.05 MHz 7.68 MHz 8.87 MHz 9.36 MHz 9.92 MHz 10.53 MHz 11.35 MHz 12.16 MHz 13.12 MHz 14.20 MHz Doc ID 13141 Rev 6 TDA7528 Function ...

Page 61

... TDA7528 Table 59. AM filter adjust (29 / 45) (continued) MSB 5.2.32 Misc 3 (30 / 46) Table 60. Misc 3 (30 / 46) MSB 5.2.33 AD converter test (31 / 47) Table 61. AD converter test (31 / 47) MSB LSB filter corner frequency (-3dB point 16.31 MHz 17.03 MHz 18.07 MHz 18.95 MHz 20.31 MHz ...

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... Supply voltage not OK, if bit was set once 1 Supply voltage OK GPIO 5 level - - - - low high GPIO 6 level - - - - low high - - - - not used - - - - not used LSB converter result X ADC0 X ADC1 X ADC2 ADC3 ADC4 ADC5 AD converter result status - - - - Not OK (readout before converter finished not used Doc ID 13141 Rev 6 TDA7528 Function Function ...

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... TDA7528 6 Package information In order to meet environmental requirements, ST offers these devices in different grades of ® ECOPACK packages, depending on their level of environmental compliance. ECOPACK specifications, grade definitions and product status are available at: www.st.com. ® ECOPACK trademark. Figure 10. LQFP64 (10x10x1.4mm) exposed pad down mechanical data and package dimensions (exposed pad size for D2 and E2: 4 ...

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... Corrected the Rev. number on page 1. 4 Modified Table 56 on page Modified Table 18 on page page 52. 5 Updated note below Modified Table 28: Communication using the SPI protocol electrical 6 characteristics on page Doc ID 13141 Rev 6 Changes 50. 58. 32, Table 31 on page 44, Table 44 on Table 49 on page 55. 38. TDA7528 Table 8 on ...

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... TDA7528 Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...

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