AN7289NFBQ PANASONIC | Alldatasheet

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Technical content

FM-FE +AM IC for car radio n Overview The AN7289NFBQ is an IC having FM-FE +AM functions for car radio. A tuner block of car radio can be constructed by using this IC and the AN7293NSC/NFBQ. n Features

  • A less number of electrolytic capacitors is required (3 capacitors reduction compared with our conventional IC)
  • AM: Effective sensitivity is improved by 2 dB through ATC
  • AM: Strong-input characteristic is improved by 2-loop- AGC function
  • The AN7289NSC of DIL package type is also available n Applications
  • Car radios LQFP032-P-0707 Unit : mm n Block Diagram V CC AM-AF OUT Keyed-AGC in V AOSC GND2 V FOSC AM-IF count AM-SD out AM-S. meter AM-IF out GND1 FM-mix. in FM-PIN D FM/AM SW AM. S-meter FM AGC AM OSC FE OSC AM ATC AM det. AM SSC FM mix. FM IF amp. AM IF amp. AM mix. AM RF AGC AM IF AGC 7.0±0.3 (0.55) 1.4±0.2 0.1±0.1 9.2±0.4 7.0±0.3 0.8 9.2±0.4 0.3+0.10 –0.05 0.15+0.10 –0.05 24 17

AN7289NFBQ ICs for FM/AM Tuner Pin No. Description

17 FM-PIN diode driver

18 AM-OSC coil pin

19 FM-mix. output 2 20 FM-mix. output 1

21 FM-PIN diode driver

22 FM-mix. input

23 V CC2 /FM/AM SW

24 FM-AGC output

25 FM-OSC buffer output

26 AM-OSC buffer output/FE-AGC sensitivity setting

27 GND2

28 FM-OSC coil pin

29 FM-keyed-AGC input

30 AM-AM output/LO setting

31 AM-ATC input

32 AM-IF level detection

Pin No. Description

1 AM detection output

3 AM-IF counter output/DX/LO SW

4 AM-SD output

5 AM-signal meter output

6 FM-IF output

7 AM-IF output

8 GND1

9 SSC

10 AM-RF level detection

11 AM-WAGC detection/DX setting

12 AM-IF input

13 AM-mix. output

14 FM-IF input

15 AM-RF gain control

16 AM-mix. input Parameter Symbol Rating Unit Supply voltage V CC 9.1 V Supply current I CC 56 mA Power dissipation *2 PD 343.3 mW Operating ambient temperature *1 T opr -35 to +80 °C Storage temperature *1 Tstg -55 to +125 °C Parameter Symbol Range Unit Supply voltage V CC 7.2 to 9.0 V n Recommended Operating Range Note) *1: Ta = 25°C except power dissipation, operating ambient temperature and storage temperature. *2: Referring to "n Technical Information" for power dissipation at Ta = 80°C, use the circuit under the conditions not exceeding the allowable limit value. n Absolute Maximum Ratings

ICs for FM/AM Tuner AN7289NFBQ n Electrical Characteristics at Ta = 25°C

  • AM mode at VCC = 8.0 V, fIN2 = 1 MHz Parameter Symbol Conditions Min Typ Max Unit AM consumption current 1 amL T1 Without input 28 36 44 mA AM consumption current 2 amL T2 fIN2 = 1 MHz, VIN2 = 130 dBm 33 41 49 mA AM-AF output amV O V IN2 = 74 dBm, 400 Hz 30% , 105 135 160 mV AM-AF output AM signal-to-noise ratio amSN V IN2 = 74 dBm, 400 Hz 30%, 48 52 58 dB AM-AF output S/N AM-AGC width amW V IN2 = 74 dBm, 400 Hz 30%, 56 60 64 dB AM-AF output -10 dB input change AM-ATC operation amATC (Output ratio [dB] of 400 Hz and 3 kHz 3.5 6.5 9.5 dB when V IN2 = 18 dBm) - (output ratio [dB] of 400 Hz and 3 kHz when VIN2 = 74 dBm) 80% Mod., AM-AF OUT output AM-distortion rate 1 amT1 V IN2 = 74 dBm, 400 Hz 80%, 0.01 0.5 1.5 % AM-AF output distortion AM-distortion rate 2 amT2 V IN2 = 130 dBm, 400 Hz 80%, 0.01 0.5 1.5 % AM-AF output distortion AM wide band AGC on input amV W fIN2 = 1.4 MHz, input when pin 15 96 102 108 dB m voltage becomes below 3 V AM local oscillation buffer output amVOS Without input 160 210 260 mV AM-IF count output 1 amIF1 V IN2 = 40 dBm 150 210 270 mV AM-IF count output 2 amIF2 Without input ¾¾ 10 mV AM-SD output 1 amSD1 V IN2 = 40 dBm 4.5 4.9 5.1 V AM-SD output 2 amSD2 Without input 0.0 0.2 0.5 V AM signal meter output 1 amV S1 Without input, pin 5 voltage 1 50 200 mV AM signal meter output 2 amV S2 V IN2 = 30 dBm, pin 5 voltage 0.8 1.05 1.3 V AM signal meter output 3 amV S3 V IN2 = 130 dBm, pin 5 voltage 4.1 4.8 5.1 V AM search sensitivity DX amDX AM-IF count output is over 120 mV 23 29 35 dB m V IN2 when f becomes 450 kHz–2 kHz AM search sensitivity LO amLO AM-IF count output is over 120 mV 43 49 55 dB m V IN2 when f becomes 450 kHz–2 kHz Note) FM tuning condition: Adjust VATU voltage so that VAOSC output frequency becomes 1 450 kHz–500 Hz

AN7289NFBQ ICs for FM/AM Tuner Parameter Symbol Conditions Min Typ Max Unit FM local oscillation buffer outputfmV OS fOSC = 108.7 MHz, without input 140 200 260 mV FM-IF output level fmIF V IN1 = 71 dBm 40 75 110 mV FM-AGC sensitivity f mAGC V IN1 level when V24 becomes 3 V 60 64 68 dB m High-level FM-AGC voltage fmV AH V IN1 = 70 dBm 6.0 6.4 6.8 V Low-level FM-AGC voltage fmV AL V IN1 = 82 dBm¾ 0.05 0.5 V FM consumption current fmI T Without input 26 35 44 mA n Electrical Characteristics at Ta = 25°C (continued)

  • FM mode at VCC = 8.0 V, fIN1 = 98 MHz Note) FM tuning condition: Adjust VFTU voltage so that VFOSC output frequency becomes 108.7 MHz–10 kHz. n Technical Information
  • PD ¾ Ta curves of LQFP032-P-0707 PD ¾ Ta 1.200 1.000 1.600 1.388 1.400 0.800 0.600 0.400 0.200 0.613 0.000 0 25 50 Independent IC without heat shink R th(j-a) = 203.7°C/W Mounted on standard board (grass epoxy : 50 mm · 50 mm · t0.8 mm) R th(j-a) = 90.0°C/W 75 100 125 150 Ambient temperature Ta (°C) Power dissipation PD (W)

ICs for FM/AM Tuner AN7289NFBQ V CC V CC AM- AF OUT Keyed-AGC in FE-VT V AOSC V FOSC AM-IF count AM-SD out AM-S. meter AM-IF out GND1 FM-mix. inFMAM FM-PIN D 12 kW 5.6 kW 10 kW 10 kW 3.9 kW 50 kW 5 kW 510 kW 100 kW 10 kW 10 kW 100 kW 100 kW 510 kW 0.22 mF 0.01 mF 100 mF 0.022 mF 0.022 mF 0.022 mF 1 mF 0.1 mF0.022 mF 0.1 mF 0.1 mF 100 mF 0.1 mF 0.047 mF 0.1 mF 0.01 mF 8.2 mH 0.047 mF Seek on

5 Voff

0.22 mF 0.022 mF 1000 pF 33 pF 3 pF 3 pF 1 pF 3 pF 4 pF 10 W 2SK435 2SC828A GND2 n Application Circuit Example