AN7293NSC PANASONIC | Alldatasheet
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Technical content
FM-IF, NC, MPX IC for car radio n Overview The AN7293NSC is an IC having FM-IF, NC and MPX functions for car radio. A tuner block of car radio can be constructed in combination with the AN7289NFBQ/ NSC. Small outline package product (the AN7293NFBQ) is also available. n Features
- A less number of external components is required (8 components reduction compared with our conventional IC)
- Neighbouring-station interference characteristics im- provement by band-ATC function
- Band-mute on/off function n Applications
- Car radios n Block Diagram S-Meter Adj. S-Meter Forced Mono ATC Adj. Sep. Adj. R-Out L-Out GND IF In IF-Count./ST-Ind./SD AFC V CC V BAND Level det. Multipath det. Demod. VCO PLLPilot det. IF limiter IF det. V REF Mute PNL Noise det.SD, IF counter Band Mute SSOP032-P-0375 Unit: mm 17.81–0.3 0.35–0.1 7.2–0.3 9.3–0.32.0–0.2 0.1–0.1 32 17 11 6 0.15 0.3 1.01.23 0.9 Seating plane
AN7293NSC ICs for FM/AM Tuner n Pin Description Pin No. Description
17 Band signal output/band mute SW
18 PNL low-pass filter
19 PNL AGC
20 PNL input
21 Detection output
22 PNL output hold
23 SD/FM-IF counter output/stereo indicator
24 SD sensitivity adjustment
25 AFC voltage
26 V CC
27 FM detection
28 Soft mute adjustment
29 GND
30 V REF
31 IF bypass
32 IF input
Pin No. Description
1 Control voltage adjustment
2 Control voltage
3 Multiple-path noise input
4 Multiple-path detection
5 ASC adjustment/forced monaural
6 ATC adjustment
7 Separation adjustment
8 ATC low-pass filter
9 R-channel output
10 L-channel output
11 Mute voltage
12 Pilot detection low-pass filter
13 PLL low-pass filter
14 PLL low-pass filter
15 VCO
16 Pilot cancel control low-pass filter
Parameter Symbol Rating Unit Supply voltage V CC 9.1 V Supply current I CC 45 mA Power dissipation *2 PD 380.2 mW Operating ambient temperature *1 T opr -30 to +80 °C Storage temperature *1 Tstg -55 to +125 °C n Absolute Maximum Ratings Note) *1: Ta = 25°C except power dissipation, operating ambient temperature and storage temperature. *2: Ta = 80°C n Recommended Operating Range Parameter Symbol Range Unit Supply voltage V CC 7.2 to 9.0 V
ICs for FM/AM Tuner AN7293NSC Parameter Symbol Conditions Min Typ Max Unit Control voltage (1) V C1 Without signal input, pin 2 DC voltage 0.0 0.3 0.9 V Control voltage (2) V C2 V IN1 = 40 dBm, pin 2 DC voltage 0.7 1.2 1.7 V Control voltage (3) V C3 V IN1 = 70 dBm, pin 2 DC voltage 2.5 3.2 3.9 V Control voltage (4) V C4 V IN1 = 100 dBm, pin 2 DC voltage 4.5 5.3 5.8 V Control voltage (5) V C5 V C5 = VC3 - VC2 1.8 2.0 2.2 V Control voltage (6) V C6 V C6 = VC4 - VC3 1.9 2.1 2.3 V Output level L-channel V OL V IN1 = 70 dBm, pin 10 AC voltage 85 105 125 mV[rms] Output level R-channel V OR V IN1 = 70 dBm, pin 9 AC voltage 85 105 125 mV[rms] Channel balance CB CB = 20·log (VOL /VOR ) -1.0 0 1.0 dB Residual pilot voltage V PC V P = 10% modulation, VIN1 = 70 dBm, ¾ 41 4 mV[rms] pin 22 output voltage Stereo lamp turn-on level LAMP ON 19 kHz modulation, Modulation factor 1.3 4.0 6.3 % at which pin 23 becomes under 1 V Separation L-channel Sep L L+R = 90% , VP = 10% 25 33 ¾ dB Larger separation value after Separation R-channel Sep R changing over pin 7 external resistor 25 33 ¾ dB Capture range CR Modulation at V P = 6.5% –0.4 –0.7 ¾% Referred to 19 kHz Counter output level (1) VIF 1 V IN1 = 100 dBm, V24 = 2 V 120 140 160 mV[rms] pin 23 output voltage Counter output level (2) VIF 2 V IN1 = 100 dBm, V24 = 5 V 0 2 5 mV[rms] pin 23 output voltage Monaural THD (L) THD L V IN2 monaural input, 500 mV[0-p]¾ 0.1 0.3 % 1 kHz, L-ch. output distortion factor Monaural THD (R) THD R V IN2 monaural input, 500 mV[0-p]¾ 0.1 0.3 % 1 kHz, R-ch. output distortion factor Stereo THD (L) THD STL V IN2 stereo input, 500 mV[0-p] ¾ 0.1 0.3 % 1 kHz, L-ch. output distortion factor Stereo THD (R) THD STR V IN2 stereo input, 500 mV[0-p] ¾ 0.1 0.3 % 1 kHz, R-ch. output distortion factor PNL-AGC voltage (1) V AGC1 V IN2 = Without input 1.2 1.4 1.7 V pin 19 DC voltage PNL-AGC voltage (2) V AGC2 Input VIN2 = 100 mV, f = 100 kHz 0.1 0.35 0.60 V Difference from VAGC1 Residual noise voltage V NR V IN2 = (pulse width 10 ms, 1 V[p-p] 0.0 0.2 0.7 mV[rms] 1 kHz), L-ch. output n Electrical Characteristics at Ta = 25°C Unless otherwise specified, VCC = 8V, VIN1 is f = 10.70 MHz, Mod. = 1 kHz, 30% FM modulation stereo input is L + R = 90% VP = 10%
AN7293NSC ICs for FM/AM Tuner n Electrical Characteristics at Ta = 25°C Unless otherwise specified, VCC = 8V, VIN1 is f = 10.70 MHz, Mod. = 1 kHz, 30% FM modulation stereo input is L + R = 90% VP = 10% Parameter Symbol Conditions Min Typ Max Unit SD sensitivity SD S V IN1 when V24 = 2 V, V23 > 2 V 68 78 88 dB m SD bandwidth SD W V IN bandwidth when V24 = 2 V, 100 130 160 kHz and V23 > 2 V, VIN1 = 100 dBm Supply current I TOT Without input 30 37 44 mA Limiting sensitivity V LIM V IN1 input level when pin 9 AC 24 32 38 dB m voltage drops by 3 dB ATC V ATC L-ch. output ratio when 6 10 14 dB V 6 = 2 V and 0 V Gate pulse width PW V IN2 = (pulse width 1 ms, 0.3 V[p-p] 16 23 30 ms 1 kHz) pin 22 output pulse width
- Design reference data Note) The following characteristics are the reference values for design and not guaranteed values. Parameter Symbol Conditions Min Typ Max Unit Stereo lamp turn-off level LAMP OFF Ratio between the modulation factor 2.0 6.010.0 dB when pin 23 becomes 2 V or higher and LAMP ON AFC offset voltage V AFC Without signal input, DC potential- 0.1 0.0 0.1 V difference between pin 25 and pin 30
ICs for FM/AM Tuner AN7293NSC n Application circuit Example S-Meter Adj. S-Meter Forced Mono ATC Adj. ASC Adj. Sep. Adj. R-Out L-Out GND AFC IF In V REF IF-Counter ST-Indicator SD V BAND V CC 100 mF 0.1 mF 0.01 mF 0.047 mF 0.47 mF 0.1 mF 0.01 mF 0.1 mF 0.022 mF 1mF 0.1 mF 0.1 mF 0.1 mF 0.1 mF 0.022 mF 0.022 mF 0.01 mF 0.1mF 0.1mF 51 kW 330 kW 100 kW 5.6 kW 2.2 kW 100 kW (912 k) CERALOCK 10 kW 10 kW 50 kW 50 kW 100 kW 330 kW 50kW 470 pF 680 pF 1mF 180 pF(pH) 1000 pF M53 M53 100 pF Level det. Multipath det. Demod. VCO PLLPilot det. IF limiter IF det. V REF Mute PNL Noise det.SD, IF counter Band Mute