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ICs for Cassette, Cassette Deck
AN7086S
Recording/Playback Pre-/Power Amplifier IC for 3V Microcassette
s Overview
The AN7086S is an integrated circuit developed for recording playback pre-/power amp., built-in VAS (Voice Activated System) function especially.
0.45 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 2.00.2 Unit : mm
s Features * Rec. playback pre-/power amp. IC * VAS function built-in * Earphone monitor at recording is possible * 350mW BTL, OCL power amp. built-in * Mic. amp built-in * ALC function built-in * Rec./Play switching is possible with a single
switch
0.40.25
circuit
0.10.1
1.27
0.3
7.20.3 9.40.3
24-Lead SOP Package (SOP024-P-0375)
s Block Diagram
GND 24 23 22 21 20 NC 19 18 17 1/2 VCC 16 15 VCC 14 13
+ 55dB -
- + Open Loop Gain 74dB
ALC
R/P Cont.
Ripple Rej.
+ 20dB -
+ 14dB -
120k
+ 24dB -
+ 14dB -
VAS Det. Power Mute
1
2
3
4
5
6
7
8
9
10 Power GND
11 Power VCC
0.15 0.925
12
15.30.3
AN7086S
s Absolute Maximum Ratings (Ta=25C)
Parameter Supply Voltage Supply Current Power Dissipation Operating Ambient Temperature Storage Temperature Symbol VCC ICC PD Topr Tstg
ICs for Cassette, Cassette Deck
Rating 6 1000 520 -20 ~ + 75 -55 ~ + 125
Unit V mA mW C C
s Recommended Operating Range (Ta= 25C)
Parameter Operating Supply Voltage Range Symbol VCC Range 1.8V ~ 4.5V
s Electrical Characteristics (VCC=3V, f=1kHz, Ta=25C)
Parameter Quiescent Circuit Current Open Circuit Gain Total Harmonic Distortion Maximum Output Voltage Noise Voltage Referred to Input Close Circuit Gain Total Harmonic Distortion Maximum Output Voltage Output Noise Voltage Closed Circuit Gain Total Harmonic Distortion Maximum Output Voltage Output Noise Voltage Output Offset Voltage VAS Operation Input Voltage Effective Voltage Effective width Playback System Ripple Rejection Recording System Ripple Rejection Rec./Playback Switching Pin Rec./Playback Switching Pin VPB VREC Playback mode Recording mode 0.1 1.6 0.3 2.3 V V RRP RRR fr = 270Hz, Vr = 30mVrms, Rg= 1k fr = 270Hz, Vr = 30mVrms, Rg= 2.2k -70 -40 -50 -30 dBV dBV VALC WALC Vin= - 60dBV, Rg= 1.5k Vin= - 30dBV, Rg= 1.5k -6.6 -4.5 1.5 -2.5 3 dBV % VAS Mic. input level at Piny Voltage= 0.2V 8 14 18 Vrms GV - PO THD - PO VO - PO Vn - PO VDC Vin= 5mVrms, RL= 8 Vin= 5mVrms, RL= 8 THD = 10%, RL= 8 Rg= 0, RL= 8, DIN/AUDIO Filter Rg= 0, RL= 8, 300 38.5 41 0.11 350 -74 -50 0 -65 50 43.5 1 dB % mW dBV mV GV2 THDR VoR VnR Vin= - 80dBV Vin= - 80dBV THD = 5% Rg= 2.2k, DIN/AUDIO Filter 0.8 69.5 72.5 1.3 1.08 -46 -42 75.5 3 dB % Vrms dBV GV1 THD1 VO1 Vni Vin= - 85dBV, Rg= 1k Vin= 3mVrms, Rg= 1k THD= 1%, Rg= 1k Rg= 1k, DIN/AUDIO Filter 0.3 65 74 0.1 0.6 1 1.8 1 dB % Vrms Vrms Symbol Itot Condition At No Input/Playback min. 10 typ. 20 max. 35 Unit mA
ICs for Cassette, Cassette Deck
s Characteristics Curve
Pre. Amp. Input/Output Characteristics Vout, THD-Vin
10 5 3 Output Voltage Vout (Vrms) VCC=3V RL=50k freq.=1kHz 100 10
AN7086S
Power Amp. Input/Output Characteristics Vout, THD-Vin
VCC=3V RL=80 freq.=1kHz 100 10
Rec. Amp. Input/Output Characteristics Vout, THD-Vin
VCC=3V freq.=1kHz RL=10k 100
Total Harmonic Distortion THD (%)
Total Harmonic Distortion THD (%)
1 0.5 0.3 VO 0.1 0.05 0.03 THD
10
1
10
1
10
3
0.3
VO
3
0.3
Vout THD
3
1
0.1
1
0.1
1
0.3
0.03
THD
0.3
0.03
0.3
0.01 0.1
0.3 0.5
1
3
5
10
0.1
0.01 0.3
1
3
10
30
0.1 100
0.01 0.003
0.01
0.03
0.1
0.3
1
Input Voltage Vin (mVrms)
Input Voltage Vin (mVrms)
Input Voltage Vin (mVrms)
Pre. Amp. Frequency Characteristics GV, THD - f
Maximum Output Voltage VO max. (Vrms) 50 Voltage Gain GV (dB) VCC=3V RL=150k Vout= -10dBV Total Harmonic Distortion THD (%)
Pre. Amp. Maximum Output Voltage VO max.- VCC
1.2 1.0 0.8 0.6 0.4 0.2 0 freq.=1kHz RL=50k THD=1%
40 GV 30 3 2 THD 10 30 100 300 1k 3k 10k 30k 1 0 100k
0
1
2
3
4
5
6
Frequency f (Hz)
Supply Voltage VCC (V)
Pre. Amp. Supply Voltage Characteristics VCC - GV, THD
GV VO= -10dBV freq.=1kHz RL=50k 50 Total Harmonic Distortion THD (%) Voltage Gain GV (dB)
Power Amp. Frequency Characteristics GV, THD - f
VCC=3V RL=8 VO= -10dBV VO 40 4 30 THD 3 2 1 10 30 100 300 1k 3k 10k 30k 100k
40 38 Voltage Gain GV (dB) 36 34 32
3 2 THD 1 0
30
0
1
2
3
4
5
6
Supply Voltage VCC (V)
Frequency f (Hz)
Total Harmonic Distortion THD (%)
Total Harmonic Distortion THD (%)
30
3 Output Voltage Vout (Vrms)
30
3 Output Voltage Vout (Vrms)
30
AN7086S
Power Amp. Maximum Output Power PO max.- VCC
1.2 Voltage Gain GV (dB) Maximum Output Power PO max. (W) THD=10% freq.=1kHz 1.0 R =8 L 0.8 0.6 0.4 0.2 0 44 42 40 38
ICs for Cassette, Cassette Deck
Power Amp. Supply Voltage Characteristics GV, THD - VCC
VO=10dBV freq.=1kHz RL=8 GV Total Harmonic Distortion THD (%) Total Harmonic Distortion THD (%)
THD
5 4 3 2 1 0 4 5 6
0
1
2
3
4
5
6
0
1
2
3
Supply Voltage VCC (V)
Supply Voltage VCC (V)
Rec. Amp. Frequency Characteristics GV, THD - f
Maximum Output VO max. (Vrms) VCC=3V VO=-5dBV RL=10k Voltage Gain GV (dB) 70
Rec. Amp. Maximum Output Voltage VO max.- VCC
80
2.4
Total Harmonic Distortion THD (%)
GV
THD=10% freq.=1kHz 2.0 R =10k L 1.6 1.2 0.8 0.4 0
60 THD 50
4 3 2 1
40 10
100
1k Frequency f (Hz)
10k
0 100k
0
1
2
3
4
5
6
Supply Voltage VCC (V)
Rec. Amp. Supply Voltage Characteristics GV, THD - VCC
Output Voltage Vout (dBV) 0 80 Voltage Gain GV (dB) 76 72 68 64 60 0 1 2 3 4 5 6 THD 5 4 3 2 1 0 VO=5dB freq.=1k RL=10k Total Harmonic Distortion THD (%) GV
ALC Input/Output Characteristics Vout, THD - Vin
VCC=3V freq.=1kHz -2 R =10k L -4 -6 -8 THD 5 4 3 2 1 0 Vout
-80
-60
-40
-20
0
Supply Voltage VCC (V)
Input Voltage Vin (dBV)
ICs for Cassette, Cassette Deck
s Application Circuit
0.0056F
AN7086S
0.0047F 1M 10k 4.7F + +
0.01F 2.2F Mic. + + 0.1F 24 23
33F + 4.7F
14k
Rec.
1.5k
PLAY VCC 220F 220F + 220F + 15 14 13
Head
22
21
20
19
18
17
16
AN7086S
1 40k 0.033F 4.7k 0.22F + 82 + 33F PAUSE + to Motor 2.2k 0.01F VAS OFF VCC Speaker 8 2 + 3 0.22F + 47F + 4.7F 2.2F + 33F + 33F 4 5 6 7 8 9 10 11 12
s Pin Descriptions
Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 Pin Name Pre-Amp. NF Pin Pre-Amp. Output Pin Power Amp. Input Pin Power Amp. NF Pin VAS Detection MOTOR Output Pin Power Mute Pin Power Output 1 Pin B.S.1 Power GND Power VCC Power Output 2-pin Pin No. 13 14 15 16 17 18 19 20 21 22 23 24 B.S.2 VCC Filter Pin Center Rec./Play Switching Pin ALC Detection NC Rec. Amp. Output Pin Mic. Amp. NF Pin Mic. Amp. Input Pin Pre. GND Pre. Amp. Input Pin Pin Name

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