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Part: AN7351SC
Category:
Multimedia
-> Audio
-> Amplifiers
-> Preamplifiers
-> Audio PreAmp/Amp
Description: Dual Pre-amplifier Ics For Hi-fi Cassette Deck
Company: Panasonic Industrial Company/Electronic Components
Datasheet: Download AN7351SC datasheet File size : 118 kB
Request For quote: Find where to buy AN7351SC
Datasheet text preview:
ICs for Cassette, Cassette Deck
AN7351K, AN7351SC
Dual Pre-Amplifier ICs for Hi-Fi Cassette Deck
s Overview
The AN7351K and the AN7351SC are the single chip ICs designed for pre-amp. for stereo cassette (double d e c k especially) incorporating 2-ch rec./playback/line amp. and muting/switching circuits.
AN7351K
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22
Unit : mm 0.5±0.1 0.9±0.25 0.96±0.25 4.76±0.25 3.3±0.25
0.45
1. Available for playback amp. tape speed switching 2. Available for rec. amp. mute function 3. Available for playback amp. input and output switching function · Rec. amp. current and voltage both drive output is possible. · Line amp. + mute circuit built-in · Playback equalizer switching built-in · Available for microcomputer direct drive of switching control pin
13.7±0.3
3 ~ 15°
15.3±0.25
0.3 0
1 + 0. 5 .0
42-Lead SDIP Package (SDIP042-P-0600A)
AN7351SC
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22
1.778 Unit : mm 23 0.15 22 Ch.1 20 21 0.9 2.0±0.2 21.25±0.3
s Features · Available for double deck
0.1±0.1
1.0
0.35±0.1
36.8±0.3
0.3
9.5±0.3 11.5±0.3
42-Lead SOP Package (SSOP042-P-0450)
s Block Diagram
GND 42 41 40 39 38 37 36 35 34 33 ×1 ×2 SW Ch.2 32 31 30 29 28 27 REC. Mute 26 25 24
REC. Ch.2
REC. Ch.1
Ch.2 Ch.1 P B 120/70 SW 6 7 8 9 10 11 T1 Line T2 P B SW Mute 12 13 14 CUE Rev. Mute 15 16 NC 17 18 19 +VCC
1 VCC
2
3
4
5
AN7351K, AN7351SC
s Absolute Maximum Ratings (Ta=25°C)
Parameter Supply Voltage Supply Current Power Dissipation AN7351K AN7351SC AN7351K AN7351SC Symbol VCC ICC PD Topr Tstg
ICs for Cassette, Cassette Deck
Rating ±7.2 39 1014 * 787 * 20 ~ + 75 50 ~ + 150 55 ~ + 125
Unit V mA mW °C °C
Operating Ambient Temperature Storage Temperature
* AN7351K : Rth (ja)=123.3°C/W, AN7351SC : Rth (ja)=127°C/W
s Recommended Operating Range (Ta= 25°C)
Parameter Operating Supply Voltage Range Symbol VCC Range ±4.5V ~ ±7V
s Electrical Characteristics (VCC= ±6V, f=1kHz, Ta=25°C)
Parameter RL=20k Total Harmonic Distortion (1) Tape 1 Total Harmonic Distortion (2) Tape 1 Total Harmonic Distortion (3) Tape 2 Total Harmonic Distortion (4) Tape 2 Output Noise Voltage Tape 1 Output Noise Voltage Tape 2 Pulse Noise Voltage Tape 1 Pulse Noise Voltage Tape 2 Muting Attenuation Tape 1 Muting Attenuation Tape 2 Max. Output Voltage Tape 1 Max. Output Voltage Tape 2 Output Offset Voltage Tape 1 Output Offset Voltage Tape 2 Crosstalk Tape 1Tape 2 Crosstalk Tape 2Tape 1 Total Harmonic Distortion VOL Total Harmonic Distortion CUR Max. Output Voltage VOL Max. Output Voltage CUR Muting Attenuation VOL Output Noise Voltage CUR Pulse Noise Voltage CUR Output Offset Current CUR THD (RV) THD (RC) VO (RV) VO (RC) RM (RV) VN (RC) VPN (RC) IDC (RC) Vi =200mV Vi =30mV THD =3%, RL =10 THD =3%, RL =1 Vi =200mV Rg =2.2k, DIN/AUDIO Rg =2.2K Rg =5K 9 25 2.2 1 75 0.03 1 9 25 0.03 0.03 3.2 1.5 0.1 0.2 % % V V dB mV mVP O µA THD (P1) THD (P2) THD (P3) THD (P4) VN (T1) VN (T2) VPN (T1) VPN (T2) RM (T1) RM (T2) VO (T1) VO (T2) VDC (T1) VDC (T2) CT (T1) CT (T2) Vi =3.6mV Speed × 1 Feedback Time Constant 120µs Vi =3.6mV Speed × 1 Feedback Time Constant 70µs Vi =3.6mV Speed × 2 Feedback Time Constant 120µs Vi =3.6mV Speed × 2 Feedback Time Constant 70µs Rg =2.2k, DIN/AUDIO, Speed × 1 Feedback Time Constant 120µs Rg =2.2k, DIN/AUDIO, Speed × 1 Feedback Time Constant 120µs Rg =2.2k, DIN/AUDIO, Speed × 1 Feedback Time Constant 120µs Rg =2.2k, DIN/AUDIO, Speed × 1 Feedback Time Constant 120µs Vi =3.6mV Vi =3.6mV THD =3% THD =3% Rg =220 Rg =220 Vi =3.6mV Vi =3.6mV 0.04 0.04 0.04 0.04 0.7 0.7 0.9 0.9 60 60 3 3 70 70 60 60 3.4 3.4 70 70 0.1 0.1 0.1 0.1 1.5 1.5 9 9 % % % % mV mV mVP O mVP O dB dB V V mV mV dB dB Symbol Condition min. typ. max. Unit
ICs for Cassette, Cassette Deck
s Electrical Characteristics (Cont.) (VCC= ±6V, f=1kHz, Ta=25°C)
Parameter Total Harmonic Distortion Max. Output Voltage Muting Attenuation CUE/REV Distortion Output Noise Voltage Pulse Noise Voltage Output Offset Voltage Voltage Gain Time Constant Switching Pin Voltage Time Constant Switching Pin Voltage Tape Switching Pin Voltage L/P Mute Pin Voltage C/R Mute Pin Voltage Recording Mute Pin Voltage Speed Switching Pin Voltage Current Consumption Vt (T1) Vt (T2) VT1/T2 VM (L/P) VM (C/R) VM (R) VS (H/L) Itot Pin11 Voltage at 120µs, VCC = 4.5V Pin10 Voltage at 120µs, VCC = 4.5V Pin12 Voltage at T2 Mode, VCC = 4.5V Pin13 Voltage at Mute OFF, VCC = 4.5V Pin15 Voltage at Mute OFF, VCC = 4.5V Pin27 Voltage at Mute OFF, VCC = 4.5V Pin33 Voltage at Double Speed Mode, VCC = 4.5V THD (L) VO (L) RM (L) RM (C/R) VN (L) VPN (L) VDC (L) G (L) Vi =1V THD =3% Vi =1V, RL =5.1k Vi =1V, RL =5.1k Rg =5k, DIN/AUDIO Rg =5k Rg =10k Vi =1V Symbol Condition
AN7351K, AN7351SC
min.
typ. 0.02
max. 0.07
Unit % V dB
3 80 34 9 20 0.8
3.6 37 0.01 40 0.03 20 0 0.8
dB mV mV dB
9 mVP O
0 0 0 0 0 0 0 8 18
1.5 1.5 1.45 1.6 1.6 1.6 1.2 34
V V V V V V V mA
s Application Circuit
20kVR
82 100µF/6V 0.0056µF 10 27 22 k k k 560k
20kVR To Head 4.7µF 100k 4.7µF G
REC. EQ ×1% × 2 cont. 2.2 k 2.7k 18k 2.7k F 18k
To Head 10µF/16V 100k 10k VR DOLBY 10k VR
2.2k
LINE IN
680pF Tape 2 L R/P Cont. ,1 R/R Head R
680 pF
42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22
×1 ×2 SW Ch.2 REC. Ch.2 REC. Mute REC. Ch.1
Ch.1 Tape 1 L P B R/P Cont. ,1 R/R Head R T1 Line 120/70 T2 P B SW SW Mute CUE Rev Mute
Ch.2
Ch.1
1
2
3
4
5
10k
6
27k
7
22k
8
4.7µF
9 10 11 12 13 14 15 16 17 18 19 20 21
4.7µF NC. 0.47µF 10k 10k 10k
560k
4.7µF 4.7µF 4.7µF To Amp.
680pF 680 pF
BIAS
82
0.0056µF 100µF/6V
20kVR 4.7µF
20k VR
FG µcom
AN7351K, AN7351SC
s Pin Descriptions
Pin No. 1 2 41 3 40 Pin Name Negative Supply Pin Playback Amp. T1 IN (Ch.1)
DC 0V
ICs for Cassette, Cassette Deck
Typ. Waveform DC 6V
Description Main circuit VCC
Equivalent Circuit
Playback amp. Tape1 input
100
Playback Amp. T1 IN (Ch.2) Playback Amp. T2 IN (Ch.1)
AC 3.6mV
2 3 Playback amp. Tape2 input 40 41
100k
Playback Amp. T2 IN (Ch.2)
4
Playback Amp. NF IN (Ch.1) DC 0V Playback amp. negative feedback input
100
4 39
39
Playback Amp. NF IN (Ch.2)
5
120µs/70µs ( × 2) NF switch (Ch.1)
DC 0V
Output
Playback amp. Double-speed equalizer switching 38 120µs/70µs ( × 2) NF switch (Ch.2) 120µs/70µs ( × 1) NF switch (Ch.1) 120µs/70µs ( × 1) NF switch (Ch.2)
AC 1V
5 38
18k
6 37
DC 0V
Output
Playback amp. Normal speed equalizer switching
AC 1V
6 37
7
Playback Amp. NF OUT (Ch.1)
DC 0V 47
Amp.
Playback amp. negative feedback output 36 Playback Amp. NF OUT (Ch.2)
AC 1V
47k
47
7 36
8 35 9 34
Playback Amp. T1 OUT (Ch.1)
DC 0V
+VCC
9 34 35 8
47k
Playback amp. Tape 1 output
Playback Amp. T1 OUT (Ch.2) Playback Amp. T2 OUT (Ch.1)
AC 1V
47 100 47
Playback amp. Tape 2 output
VCC
Playback Amp. T2 OUT (Ch.2)
ICs for Cassette, Cassette Deck
s Pin Descriptions (Cont.)
Pin No. Pin Name T2 (120µs/70µs) LOGIC Typ. Waveform Description Tape 2 equalizer switching 70µs Open 120µs Low (less than 1.5V )
AN7351K, AN7351SC
Equivalent Circuit
VCC
10
10 11 11 T1 (120µs/70µs) LOGIC Tape 1 equalizer switching 70µs Open 120µs Low (less than 1.5V )
VCC
12
T1/T2 LOGIC
Tape 1 and Tape 2 switching T1 Open T2 Low (less than 1.5V) 12
60k
VCC
13
LINE/PB Amp. Mute LOGIC
L i n e amp., PB amp. mute switching Mute ON Open Mute OFF Low (less than 1.6V)
27k
13
14 14 LINE Mute TIMING Line mute soft switching
1k
11k 47k
15 15 CUE/REV Mute LOGIC Mute ON Open Mute OFF Low (less than 1.6V)
16
NC
VCC
17
LINE Mute Amp. OUT (Ch.2)
DC 0V 47 100 47k
Line amp. output
47
100k VCC
17 21
21
LINE Mute Amp. OUT (Ch.1)
AC 1V VCC
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