AN7261FBQ PANASONIC | Alldatasheet

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Technical content

The AN7261FBQ is an FM-multiplex reception IC including a front-end and an IF block for FM tuner. Since the receiving circuit of FM multiplex signal is integrated on a single chip, it is most suitable for saving the space of sets. n Features

  • A single chip IC for an FM-multiplex tuner block, which was conventionally composed of two ICs.
  • Fewer external components
  • Can be used for 15 MHz IF n Applications
  • VICS, RDS LQFP032-P-0707 Unit : mm 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 n Block Diagram 25V REF V REF 26GND1 29V C

16 AFC

15 SD adj. 14 Det.

11 GND2

10 OSC

9 AGC

8N.C.

24 Band

23 V C adj. 21 Mute adj.

18 V CC1

det. Mix. OSC AGC amp. IF amp. Band det. SD IF counter IF limiter Level det.

AN7261FBQ ICs for FM/AM Tuner Parameter Symbol Rating Unit Supply voltage V CC 9.1 V Supply current I CC 66 mA Power dissipation *2 PD 343.6 mW Operating ambient temperature *1 T opr -30 to +80 °C Storage temperature *1 Tstg -55 to +150 °C Parameter Symbol Range Unit Supply voltage V CC 7.2 to 9.0 V n Recommended Operating Range n Pin Descriptions Pin No. Description 1 1st IF input

2 GND for 1st IF input

3 Mixer output 1

4 Mixer output 2

5 PIN diode driver

6 Mix. Input 7V CC2 8N . C .

9 AGC output

10 OSC buffer output

12 OSC

13 SD/IF counter output

14 Detection output

15 SD sensitivity adjustment

16 AFC voltage output

Pin No. Description

17 Higher freguency correction adjustment

19 FM detection

21 Mute adjustment

22 Mute voltage output

23 Control voltage adjustment

24 Band mute SW/band signal output

25 V REF

26 GND1

28 GND for 2nd IF input

29 Control voltage output

30 Keyed-AGC input

31 AGC sensitivity adjustment

Note) *1: Ta = 25°C except power dissipation, operating ambient temperature and storage temperature. *2: Ta = 80°C n Absolute Maximum Ratings

ICs for FM/AM Tuner AN7261FBQ n Electrical Characteristics at VCC = 8 V, fIN1 = 98 MHz, fIN2 = 15 MHz, Ta = 25°C Parameter Symbol Conditions Min Typ Max Unit Control voltage 1 V C1 No signal input, DC voltage of pin 29 0.0 0.05 0.8 V Control voltage 2 V C2 V IN2 = 60 dBm, DC voltage of pin 29 0.7 1.25 1.8 V Control voltage 3 V C3 V IN2 = 80 dBm, DC voltage of pin 29 1.8 2.4 3.0 V Control voltage 4 V C4 V IN2 = 100 dBm, DC voltage of pin 29 3.0 3.7 4.4 V Control voltage 5 V C5 V C5 = VC3 -V C2 1.0 1.2 1.4 V Control voltage 6 V C6 V C6 = VC4 -V C3 1.05 1.25 1.45 V Detection output level 1 V O1 V IN2 = 80 dBm/1 kHz, 30%FM, 70 90 110 mV[rms] AC voltage of pin 14 Detection output level 2 V O2 V IN2 = 80 dBm/76 kHz, 10%FM, 37 47 57 mV[rms] AC voltage of pin 14 Counter output level V IFC V IN2 = 100 dBm, V15 = 2 V, 150 180 210 mV[rms] IFC output level SD sensitivity SD S V IN2 when V15 = 2 V, SD > 4 V 61 71 81 dB m SD bandwidth SD W Bandwidth when SD > 4 V, 90 115 140 kHz V IN2 = 100 dBm Limiting sensitivity V LIM V IN2 level, 30 kHz LPF on, and 1 kHz 40 48 54 dB m 30% FM when pin 14 AC voltage drops by 3 dB Local oscillation buffer output VOS fOSC = 113 MHz, without input 110 160 210 mV[rms] IF output level V IF V IN1 = 80 dBm, IF out level 60 110 170 mV[rms] AGC sensitivity S AGC V IN1 level when V9 = 3 V 68 72 76 dB m High-level AGC voltage V AH V IN1 = 66 dBm, V9 5.9 6.3 6.7 V Low-level AGC voltage V AL V IN1 = 78 dBm, V9 ¾ 0.05 0.5 V Supply current I TOT Without input 41 52 65 mA Note) FM tuning condition: Adjust the VT of application voltage so that OSC buffer output frequency becomes 113 MHz–10 kHz. SD n Usage Notes 1. Use less than 10 kW of external resistor of pin 31 2. Use this IC not to exceed allowable power dissipation value refering to the "n Technical Information".

AN7261FBQ ICs for FM/AM Tuner 2. Specification for special parts Part Maker Maker Connection Specification part number Pin No. Turns LC value Q at no load IF coil Sumida 4162-T006 4-6 10T 12 pF –10% 50 or more 1-2 11T (15 MHz) 2-3 11T Detection Matsushita SQF5EB033A 1-3 11T 0.59 mH4 1 –20% coil electronics –5.0% (15 MHz) parts n Technical Information 1. 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 AN7261FBQ n Application Circuit Example V REF 26GND1 V C SD adj. 100 kW 51 kW 1 mF 3.9 kW 300 W 8N.C. 23 V C adj. Band 21 Mute adj. Det. Seek AFC V CC

470 W 330 W

0.1 mF 18 pF 100 mF 0.1 mF 180 pF 2.2 kW 100 kW 50 kW 0.1 mF 50 kW 100 kW 10 kW 0.01 mF 0.01 mF