TDA7427AD1TR STMicroelectronics, TDA7427AD1TR Datasheet
TDA7427AD1TR
Specifications of TDA7427AD1TR
Related parts for TDA7427AD1TR
TDA7427AD1TR Summary of contents
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AM-FM RADIO FREQUENCY SYNTHESIZER ON-CHIP REFERENCE OSCILLATOR AND PROGRAMMABLE IF COUNTER VHF INPUT AND PRECOUNTER FOR FRE- QUENCIES UP TO 290MHz (SUITABLE FOR DAB APPLICATION) HF INPUT FOR FREQUENCIES UP TO 64MHz (SHORT WAVE BAND) IN-LOCK DETECTOR FOR SEARCH/STOP STATION ...
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TDA7427A ABSOLUTE MAXIMUM RATINGS Symbol V Supply Voltage DD1 V Supply Voltage DD2 P Total Power Dissipation tot T Storage Temperature stg T Ambient Temperature amb PIN CONNECTION LP_FM LP_HC LP_AM VREF DOUT3 DOUT4 DOUT5 DOUT6 OSCIN OSCOUT N.C. SCL ...
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PIN DESCRIPTION PIN SYMBOL 1 LP_FM Filter OPAMP input, charge pump output (FM mode) 2 LP_HC Filter OPAMP input, charge pump output (high current mode) 3 LP_AM Filter OPAMP input, charge pump output (AM mode) VREF OPAMP reference voltage 4 ...
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TDA7427A ELECTRICAL CHARACTERISTICS (T wise specified). Symbol Parameter V Supply Voltage DD1 V Supply Voltage DD2 I Supply Current DD1 I Supply Current DD2 I Supply Current DD1 STB RF INPUT (AM_IN, FM_IN) f Input Frequency AM iAM f Input ...
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ELECTRICAL CHARACTERISTICS (continued) Symbol Parameter V Input Low Voltage IL V Input High Voltage IH I Input Current IN V Output Voltage SDA OUT acknowledge OSCILLATOR t Build Up Time bu C Internal Capacitance in C Internal Capacitance OUT Z ...
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TDA7427A GENERAL DESCRIPTION This circuit contains a frequency synthesiser and a loop filter for use in FM/AM radio tuning sys- tems. Only a VCO is required to build a complete PLL system. For auto search/stop operation an IF counter system ...
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Figure 1. FM and AM (SW) operation (swallow mode) OSC Table 2. Control Register Functions. REGISTER NAME PC Programmable counter for VCO frequency RC Reference counter PLL IRC Reference counter IF IFCM IF counter mode ...
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TDA7427A Figure 2. AM direct mode operation for SW, MW and LW OSC DIVIDER FROM VCO FREQUENCY TO REFERENCE FREQUENCY This divider provides a low frequency f phase is compared with the reference frequency f ...
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Figure 3. Phase comparator waveforms Figure 4. IF Counter internal block diagram IFENA IF-AM IF-FM OSC 14 BIT COUNTER IFC-REGISTER EW-REGISTER 11-21 BIT COUNTER ZD CF-REGISTER UP/DOWN COUNTER 3 BIT COUNTER DECODE IFS-REGISTER D95AU377A TDA7427A SSTOP 9/21 ...
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TDA7427A The negative input is switchable to three input pins ( LPIN 1, LPIN 2 and LPIN 3) to increase the flexibility in application. This feature allows two separate active filters for different applications A logical ”1” in the LPIN ...
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I C BUS INTERFACE DESCRIPTION 2 The TDA7427A supports the I C bus protocol. This protocol defines any device that sends data into the bus as a transmitter and the receiving de- vice as the receiver. The device that ...
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TDA7427A dress being transmitted. After this comparison, the TDA7427A will gener- ate an ”acknowledge” on the SDA line and will perform either a read or write operation according to the state of R/W bit. Write Operation Following a START condition ...
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Data Byte Specification CHARGE PUMP CONTROL MSB LPIN1/2 CURRH PLL COUNTER 1 (LSB) MSB ...
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TDA7427A PLL COUNTER 2 (MSB) MSB ...
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LOCK DETECTOR & PLL MODE CONTROL MSB LDENA INLOCK COUNTER REFERENCE CONTROL 1 (LSB) MSB ...
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TDA7427A IF COUNTER REFERENCE CONTROL 2 (MSB) AND IF COUNTER MODE SELECT MSB ...
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IF COUNTER CONTROL 2 MSB ...
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TDA7427A OSCILLATOR ADJUST MSB ...
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DIM. MIN. TYP. MAX. MIN. TYP. A 1.20 A1 0.05 0.15 0.002 A2 0.80 1.00 1.05 0.031 0.039 b 0.19 0.30 0.007 c 0.09 0.20 0.0035 D 9.60 9.70 9.80 0.378 0.382 E 6.40 0.252 e 0.65 0.026 ...
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TDA7427A mm DIM. MIN. TYP. MAX. MIN. A 2.65 a1 0.1 0.3 0.004 b 0.35 0.49 0.014 b1 0.23 0.32 0.009 C 0 (typ.) D 17.7 18.1 0.697 E 10 10.65 0.394 e 1.27 e3 16.51 F 7.4 ...
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... STMicroelectronics. Specification mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics 2002 STMicroelectronics – ...