IC PROCESSOR AUDIO DGTL 28-SOIC

TDA7440D

Manufacturer Part NumberTDA7440D
DescriptionIC PROCESSOR AUDIO DGTL 28-SOIC
ManufacturerSTMicroelectronics
TypeAudio Processor
TDA7440D datasheet
 

Specifications of TDA7440D

ApplicationsHi-Fi SystemsMounting TypeSurface Mount
Package / Case28-SOIC (7.5mm Width)Lead Free Status / RoHS StatusLead free / RoHS Compliant
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DIGITALLY CONTROLLED AUDIO PROCESSOR
1
FEATURES
INPUT MULTIPLEXER
– 4 STEREO INPUTS
– SELECTABLE INPUT GAIN FOR OPTIMAL
ADAPTATION TO DIFFERENT SOURCES
ONE STEREO OUTPUT
TREBLE AND BASS CONTROL IN 2.0dB
STEPS
VOLUME CONTROL IN 1.0dB STEPS
TWO SPEAKER ATTENUATORS:
– TWO INDEPENDENT SPEAKER CONTROL
IN 1.0dB STEPS FOR BALANCE FACILITY
– INDEPENDENT MUTE FUNCTION
ALL FUNCTION ARE PROGRAMMABLE VIA
SERIAL BUS
2
DESCRIPTION
The TDA7440D is a volume tone (bass and treble)
balance (Left/Right) processor for quality audio
applications in Hi-Fi systems.
Figure 2. Block Diagram
4
L-IN1
100K
5
L-IN2
100K
6
L-IN3
100K
7
L-IN4
100K
3
R-IN1
100K
2
R-IN2
100K
1
R-IN3
100K
28
R-IN4
INPUT MULTIPLEXER
100K
April 2010
Figure 1. Package
Table 1. Order Codes
TDA7440D013TR
Selectable input gain is provided. Control of all the
functions is accomplished by serial bus.
The AC signal setting is obtained by resistor net-
works and switches combined with operational
amplifiers.
Thanks to the used BIPOLAR/CMOS Technology,
Low Distortion, Low Noise and DC stepping are
obtained
MUXOUTL
INL
TREBLE(L)
8
9
18
G
VOLUME
TREBLE
0/30dB
2
I
CBUS DECODER + LATCHES
2dB STEP
G
VOLUME
TREBLE
+ GAIN
10
11
19
MUXOUTR INR
TREBLE(R)
TDA7440
TONE CONTROL
SO-28
Order code
Package
TDA7440D
SO-28
Tape & Reel
BIN(L)
BOUT(L)
14
15
R
B
27
SPKR ATT
BASS
LOUT
LEFT
21
SCL
22
SDA
20
DIG_GND
26
SPKR ATT
BASS
ROUT
RIGHT
V
REF
24
V
S
SUPPLY
25
AGND
R
B
12
13
23
BIN(R)
BOUT(R)
CREF
D98AU883
REV. 4
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TDA7440D Summary of contents

  • Page 1

    ... TWO INDEPENDENT SPEAKER CONTROL IN 1.0dB STEPS FOR BALANCE FACILITY – INDEPENDENT MUTE FUNCTION ALL FUNCTION ARE PROGRAMMABLE VIA SERIAL BUS 2 DESCRIPTION The TDA7440D is a volume tone (bass and treble) balance (Left/Right) processor for quality audio applications in Hi-Fi systems. Figure 2. Block Diagram 4 L-IN1 100K ...

  • Page 2

    TDA7440 Figure 3. Pin Connection (Top view) MUXOUTL MUXOUT(R) Table 2. Absolute Maximum Ratings Symbol V Operating Supply Voltage S T Operating Ambient Temperature amb T Storage Temperature Range stg Table 3. Thermal Data Symbol R Thermal Resistance Junction-pins th ...

  • Page 3

    Table 5. Electrical Characteristcs Refer to the test circuit T = 25°C, V amb otherwise specified. Symbol Parameter SUPPLY V Supply Voltage S I Supply Current S SVR Ripple Rejection INPUT STAGE R Input Resistance IN V Clipping Level CL ...

  • Page 4

    TDA7440 Table 5. Electrical Characteristcs (continued) Refer to the test circuit T = 25°C, V amb otherwise specified. Symbol Parameter AUDIO OUTPUTS V Clipping Level CLIP R Output Load Resistance L R Output Impedance Voltage Level DC ...

  • Page 5

    ... Both of them have 1dB step resolution. The very high resolution allows the implementation of systems free from any noisy acoustical effect. The TDA7440D audioprocessor provides 3 bands tones control. 3.1 Bass Stage Several filter types can be implemented, connecting external components to the Bass IN and OUT pins. ...

  • Page 6

    TDA7440 Figure 6. THD vs. frequency Figure 7. THD vs. R LOAD Figure 8. Channel separation vs. frequency 6/17 Figure 9. Bass response R = 44kΩ C10 = 100nF (Bout, Bin 5.6kΩ Figure 10. Treble ...

  • Page 7

    ... I C BUS INTERFACE Data transmission from microprocessor to the TDA7440D and vice versa takes place through the 2 wires BUS interface, consisting of the two lines SDA and SCL (pull-up resistors to positive supply voltage must be connected). 4.1 Data Validity As shown in fig. 11, the data on the SDA line must be stable during the high period of the clock. The HIGH and LOW state of the data line can only change when the clock signal on the SCL line is LOW ...

  • Page 8

    ... ACK = Acknowledge S = Start P = Stop A = Address B = Auto Increment 5.1 EXAMPLES 5.1.1 No Incremental Bus The TDA7440D receives a start condition, the correct chip address, a subaddress with the (no in- cremental bus), N-datas (all these data concern the subaddress selected), a stop condition. CHIP ADDRESS MSB LSB S 1 ...

  • Page 9

    POWER ON RESET CONDITION Table 6. INPUT SELECTION INPUT GAIN VOLUME BASS TREBLE SPEAKER 5.3 DATA BYTES Address = 88 HEX (ADDR:OPEN). Table 7. FUNCTION SELECTION: First byte (subaddress) MSB ...

  • Page 10

    TDA7440 5.3 DATA BYTES (continued) Table 10. INPUT GAIN SELECTION MSB GAIN = 0 to 30dB Table 11. VOLUME SELECTION MSB ...

  • Page 11

    DATA BYTES (continued) Table 12. BASS SELECTION MSB Table 13. TREBLE SELECTION MSB LSB ...

  • Page 12

    TDA7440 5.3 DATA BYTES (continued) Table 14. SPEAKER ATTENUATE SELECTION MSB ...

  • Page 13

    Figure 14. PINS CREF Figure 15. PINS: 26 ROUT LOUT 20µA D96AU434 Figure 16. PINS 100K V REF Figure 17. ...

  • Page 14

    TDA7440 Figure 20. PINS: 13 BOUT(L) BOUT(R) Figure 21. PINS: 18 TREBLE(L) TREBLE(R) 50K 6 PACKAGE MECHANICAL DATA In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK packages, ...

  • Page 15

    Figure 24. SO-28 Mechanical Data & Package Dimensions mm DIM. MIN. TYP. MAX. A 2.65 a1 0.1 0.3 b 0.35 0.49 b1 0.23 0.32 C 0.5 c1 45° (typ.) D 17.7 18 10.65 e 1.27 e3 16.51 F ...

  • Page 16

    TDA7440 7 REVISION HISTORY Table 15. Revision History Date Revision January 2004 June 2004 30-Apr-2010 16/17 2 First Issue 3 Modified the style-sheet in compliance with the last revision of the “Corporate Technical Pubblications Design Guide”. 4 Updated title and ...

  • Page 17

    ... ST and the ST logo are trademarks or registered trademarks various countries. Information in this document supersedes and replaces all information previously supplied. The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners. Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel ...