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ICs for Cassette/Cassette Deck Use
AN7356NSC
Recording and playback equalizer amp. IC for Hi-Fi cassette deck
s Overview
The AN7356NSC is an audio signal processing IC for analog cassette deck. All the recording and playback processing can be realized with one chip.
0.45
Unit: mm
1 42
s Features
* Control various adjustment circuit by serial data * Playback system * Built-in variable volume circuit (6 dB) for playback gain adjustment * Built-in various equalizer switching circuit * Built-in series mute circuit * Recording system * Built-in equalizer (freq. characteristics, gain) circuit of middle and high frequencies * Built-in volume circuit (+20 dB) for overall gain adjustment * With low frequency band boost pins * Built-in drive circuit for current output * With parallel data output
1.0
21
0.10.1
22
0.3
0.15
9.50.3 11.50.3
SSOP042-P-0450A
s Applications
* Cassette deck (Hi-Fi)
2.00.2
0.9
21.250.3
0.350.1
1
AN7356NSC
s Block Diagram
-VEE 1 T1 2 T2 3 4 PB 5 6
600 LPF
ICs for Cassette/Cassette Deck Use
42 GND 41 T1
40 39 PB EQ-VR
REG VCA VCA
T2
EQ-VR
38 37
7 PB out 8 VCC 9
36 35
600 LPF
Rec.in 10 11 12 13 14
VCA Q/FF/FR
PB out 34 33 Rec. in 32 31 30 29
VCA L-boost Fm/GH
Rec.
Rec. L-boost Fm/GH
Q/FF/FR
VOUT 15
28
VOUT
IOUT 16
DAC
27
IOUT
26 Inj. Bias 1 17 Bias 2 18 FET 19 -VEE 20 IE 21 25 DA L DA L DA L DA L VDD
DAC S/P S/P
24 D-GND
Address 23 Shift register S-data
22 CLK
2
ICs for Cassette/Cassette Deck Use
s Pin Descriptions
Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 Description Negative supply pin Playback amp. TAPE1 input Playback amp. TAPE2 input Playback amp. negative feedback input Playback amp. equalizer pin Playback amp. negative feedback output LPF pin Playback amp. output Positive supply pin Recording amp. non-inverting input Low frequency band boost pin DAC output pin(Addr.: 02) Recording equalizer amp. output Recording volume amp. input Recording amp. voltage output Recording amp. current output DAC output pin(Addr.: 0A) DAC output pin (Addr.: 09) FET drive current output Negative supply pin Erase current output Pin No. 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 Clock input Serial data input GND pin Positive supply pin Injector current pin
AN7356NSC
Description
Recording amp. current output Recording amp. voltage output Recording volume amp. input Recording equalizer amp. output
Low frequency band boost pin Recording amp. non-inverting input DAC calibration pin Playback amp. output LPF pin Playback amp. negative feedback output Playback amp. equalizer pin Playback amp. negative feedback input Playback amp. TAPE2 input Playback amp. TAPE1 input GND pin
s Absolute Maximum Ratings
Parameter Supply voltage Symbol VCC VDD Supply current Power dissipation
*2 *1
Rating 7.7 +7.7 443 -25 to +75 -55 to +150
Unit V
ICC PD Topr Tstg
*1
mA mW C C
Operating ambient temperature Storage temperature
Note) *1 : All items are at Ta = 25C, except for the operating ambient temperature and storage temperature. *2 : Power dissipation of the IC single unit at Ta = 75C. Use the IC under the conditions of not exceeding the allowable power dissipation curve.
s Recommended Operating Range
Parameter Supply voltage Symbol VCC VDD Range 4.5 to 6.5 (typ.) to 7.2 4.5 to 5.0 to 5.5 3 Unit V
AN7356NSC
ICs for Cassette/Cassette Deck Use
s Electrical Characteristics at VCC = 6.5 V, Ta = 25C
Parameter Playback system Reference output level (0 dB) Reference output level (+6 dB) Reference output level (-6 dB) Level difference between tapes V1 GH GL GT12 Symbol Conditions Difference between 6 dB and 0 dB GH = data (2)-data (1) Difference between -6 dB and 6 dB GL = data (2)-data (3) Operation: The above reference output level (V1) difference between tapes VIN = -64 dBV, 30 kHz LPF on VIN = -64 dBV, 30 kHz LPF on IHF-A, Rg = 2.2 k IHF-A, Rg = 2.2 k THD = 3% Rg (CH2) = 220 Rg (CH1) = 220 Rg = 220 DAC5 = (08) T2 mode T1 mode Rg = 2.2 k f = 10 kHz f = 10 kHz GEQ70 = data (18)-data (17) f = 10 kHz GEQ50 = data (19)-data (17) f = 10 kHz GLPF = data (23)-data (19) Operation: The above output offset voltage (VOFF) difference between tapes fIN = 400 Hz, VIN = 6 dBV V (400 Hz) = 0 dB fIN = 10 kHz GHL = data (32H)-data (32L) V(400 Hz) = 0 dB GHL = data (33H)-data (33L) VIN = -12 dBV fIN = 25 kHz VIN = -30 dBV Min -3.4 5.0 10 2.0 60 60 -450 60 60 60 -7.3 -5.0 -8.5 -55 Typ -1.4 6.0 11.8 0 0.12 0.12 -69 -69 3.6 0 -5.3 -4.0 -7.5 -25 0 Max Unit Note VIN = -56 dBV, f = 1 kHZ, 30 kHz LPF on 0.6 7.0 13.5 1 0.4 0.4 -56 -56 +130 9 -3.3 -3.0 -6.5 -20 55 dBV dB dB dB % % dBV dBV dBV dB dB mV dB dB dB mV dBV Data(17) dB dB dB mV Data(18) Data(19) Data(23) Data(1) Data(2) Data(3)
Total harmonic distortion (T1, 0 dB) THD1 Total harmonic distortion (T2, 0 dB) THD2 Output noise voltage (T1, 0 dB) Output noise voltage (T2, 0 dB) Maximum output level (0 dB) Cross talk (ch. R ch. L) Cross talk (ch. L ch. R) Output offset voltage (0 dB) Mute attenuation (T2) Mute attenuation (T1) Mute attenuation (T2) Pulse noise voltage EQ-VR (120 ) EQ-VR (70 ) EQ-VR (50 ) 600 Hz LPF (50 ) T1/T2 switching shock noise Recording system Reference output (EQ output) Middle and high frequency gain High frequency peak gain High Low High Low VEQ GHH GHL GPH GPL VNO1 VNO2 VOMX CT1 CT2 VOFF GM0 GM1 GM2 VP VEQ120 GEQ70 GEQ50 GLPF VT12
-3 3.0 10 18 18
-0.5 5.0 13 21 12
2.0 7.0 15 22 24
dBV dB Data (32H) Data (32L) dB Data (33H) Data (33L)
4
ICs for Cassette/Cassette Deck Use
s Electrical Characteristics at VCC = 6.5 V, Ta = 25C (continued)
Parameter Symbol Conditions V(25 kHz) = 0 dB GHL = data (34W) -Data (34N) fIN = 44 kHz fIN = 11 kHz VIN = -18 dBV GTL = data (36H) fIN = 1 kHz -data (36L) (VR input) VIN = -14 dBV RLV = 10 k VIN = -20 dBV RLV = l k RLV = 10 k RLV = 1 k fIN = 1 kHz THD = 3% fIN = 1 kHz f(peak) = 25 kHz f = 35 kHz VIN = -18 dBV Min Typ
AN7356NSC
Max
Unit
Note
Recording system (continued) High frequency peak bandwidth (10 kHz output) High frequency peak frequency DAC control Volume amp. gain (VOL output) Total harmonic distortion Wide NAR High Low High Low VOL GQW GQL DfPH DfPL GTH GTL THDRV 2.7 14 4.7 16 (30) (10) 19 18.3 0.3 0.3 3.2 1.5 0.45 6.7 18 (3B) (13) 21 20.3 0.8 0.8 2 +900 +25 +9 mV[rms] dB mV A dB mV[p-0] V[rms] % dB Data(36H) Data(36L) dB Data(34W) Data(34N)
VIN = -30 dBV (2D) (0D) 17 16.3 2.2 1.0 40 -500 -25 60 -9
CURR THDRC Maximum output voltage Output noise voltage (curr. output) Input muting attenuation (EQ output) Output offset voltage (EQ output) Output offset voltage (curr. output) Output muting attenuation (VOL output) Pulse noise voltage (curr. output) Logic system Bias output (low) Bias control width Current consumption Analog +VCC Digital +VDD -VEE IVCC IVDD IVEE VBL VBH VOL CURR VO-RV VO-RC VN-RC IMEQ VOF-EQ VOF-RC OMRV
Rg = 0 , RLV = 1 k IHF-A fIN = 1 kHz, VIN = -6 dBV fIN = 1 kHz, VIN = 0 dBV DAC (GTL) = (10)
VPN (RC) Rg = 0
DAC09 = (00) DAC0A = (00) DAC09 = (FF), DAC0A = (FF) Data(46)-data(45)
-2.5 4.2
-1.9 4.7
1.5 5.2
V V
DC voltage Data(45) DC voltage Data(46)
Without input Without input Without input
21 0.7 -40
28 1.5 -36
34 2.3 -31
mA mA mA
DC DC DC
5
AN7356NSC
s Terminal Equivalent Circuits
Pin No. 1 Equivalent circuit
ICs for Cassette/Cassette Deck Use
Description Negative supply pin Main circuit (-VEE) (analog system)
Standard waveform DC -6.5 V
2
Playback amp. T1 in (R-ch.) Playback amp. Tape1 input
DC 0 V
Pins 2, 3, 40, 41
-VEE
3
Playback amp. T2 in (R-ch.) Playback amp. Tape2 input
4
Playback amp. NF in (R-ch.) Playback amp. negative feedback input
Pins 4, 39
DC 0 V
-VEE
5
+VCC
NF switch (R-ch.) Playback amp. equalizer switching
DC 0 V
Pins 5, 38
-VEE
-VEE
6
ICs for Cassette/Cassette Deck Use
s Terminal Equivalent Circuits (continued)
Pin No. 6 Equivalent circuit
+VCC
AN7356NSC
Description Playback amp. NF out (R-ch.) Playback amp. negative feedback
Standard waveform DC 0 V
47
ouput
47
47 k Pins 6, 37 -VEE
7
+VCC
LPF-R 600 Hz LPF
DC 0 V
27 k -VEE
Pins 7, 36
8
+VCC
Playback amp. out (R-ch.) Playback amp. output
DC 0 V
47
47
Pins 8, 35 47 k
-VEE
9
Positive supply pin Main circuit (+VCC) (analog system)
DC 6.5 V
7
AN7356NSC
s Terminal Equivalent Circuits (continued)
Pin No. 10 Equivalent circuit
Pins 10, 33
ICs for Cassette/Cassette Deck Use
Description Rec. in(R) Rec. amp. (non-inverted) input
+VCC
Standard waveform DC 0 V
10 k
100
11
Boost (R) Low frequency boost
Pins 10, 33 6.2 k
DC 0 V
28.6 k 10 k
5.9 k
Pins 11, 32
12
D-GND 2 k
+VCC
DM DAC output (Medium cut-off frequency control)
12
DC 0 V
-VEE
13
+VCC
EQ out (R) Rec. equalizer amp. output
DC 0 V
47
47
Pins 13, 30
-VEE
8
ICs for Cassette/Cassette Deck Use
s Terminal Equivalent Circuits (continued)
Pin No. 14 Equivalent circuit
+VCC
AN7356NSC
Description VR in (R) Rec. volume amp. input
Standard waveform DC 0 V
200 Pins 14, 29 10 k
15
+VCC
VOUT(R) Rec. amp. voltage output
DC 0 V
47
47
Pins 15, 28
-VEE
16
IOUT(R) Rec. amp. current output
Pins 16, 27
17
+VDD
Bias 1 DAC output of address 0A
18
Pins 17,18 100 k -VEE
Bias 2 DAC output of address 09
9
AN7356NSC
s Terminal Equivalent Circuits (continued)
Pin No. 19 Equivalent circuit
VCC
ICs for Cassette/Cassette Deck Use
Description FET FET drive current output
Standard waveform
Pins 19, 21
47 k D-GND
20
Supply pin Main circuit (-VEE) (digital system)
DC -6.5 V
21
Refer to pin 19
IE Erase current output
22
D-GND
Pins 22 23
D-GND
SCLK Clock input
DC 0 V
I2L
23
S-data Serial data input
10 k -VEE
24
GND Main circuit (GND) (digital system)
DC 0 V
25
Supply pin Main circuit (+VDD) (digital system)
DC 5.0 V
26
Inj. I2L injector current pin Adjust the current by an external resister
10
ICs for Cassette/Cassette Deck Use
s Terminal Equivalent Circuits (continued)
Pin No. 27 Equivalent circuit Refer to pin 16 IOUT(L) Rec. amp. current output 28 Refer to pin 15 VOUT(L) Rec. amp. voltage output 29 Refer to pin 14 VR in (L) Rec. volume amp. input 30 Refer to pin 13 EQ out (L) Rec. equalizer amp. output 31 32 Refer to pin 11 N.C. Boost (L) Low frequency boost 33 Refer to pin 10 Rec in (L) Rec. amp. (non-inverting) input 34
+VCC D-GND
AN7356NSC
Description
Standard waveform Refer to pin 16
Refer to pin 15
Refer to pin 14
Refer to pin 13
Refer to pin 11
Refer to pin 10
ID For DAC calibration
34
22 k
22 k
22 k -VEE
35
Refer to pin 8
Playback amp. out (L-ch.) Playback amp. output
Refer to pin 8
36
Refer to pin 7
LPF-L 600 Hz LPF
Refer to pin 7
37
Refer to pin 6
Playback amp. NF out (L-ch.) Playback amp. negative feedback output
Refer to pin 6
11
AN7356NSC
s Terminal Equivalent Circuits (continued)
Pin No. 38 Equivalent circuit Refer to pin 5
ICs for Cassette/Cassette Deck Use
Description NF switch (L-ch.) Playback amp. equalizer switching
Standard waveform Refer to pin 5
39
Refer to pin 4
Playback amp. NF in (L-ch.) Playback amp. negative feedback input Playback amp. T2 in (L-ch.) Playback amp. Tape2 input
Refer to pin 4
40
Refer to pin 3
Refer to pin 3
41
Refer to pin 2
Playback amp. T1 in (L-ch.) Playback amp. Tape1 input
Refer to pin 2
42
GND Main circuit (GND) (analog system)
DC 0 V
Note) Above are typical values and may change by applied condition and dispersion etc. (VCC = 6.5 V)
s Technical Information
* Data specification description 1. Data construction
bit No. Data
01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 0 0 0 0 Data DAC data 0 1 0 1 DAC address 1
Control contents Built-in switch over Built-in DAC LD: Load
construction 0
D/S: Data select
12
{
ICs for Cassette/Cassette Deck Use
s Technical Information (continuded)
* Data specification description (continuded) 2. Data communication system
2-wire system of Clock, Data
AN7356NSC
Clock
Data
Data bit
0 01 0
1 02 Addr.
0 03 Addr.
0 13 Data
1 14 D/S
1 15 D/S
1 16 LD
Data are read when clock is rise up.
Data end if data = "1" when clock is fall down.
Transmit the empty data(0) of over the 5 clock between data when transmit data continuously.
3. Data timing, switching Characteristics 1) Data timing
tW 90% 90% 10% tH tLSUL tLHL 90% 10% 10% 10% tLSUH tW 90% 10% tLHH 90%
Clock
10% tSU 90%
90%
Data
13
AN7356NSC
s Technical Information (continuded)
* Data specification description (continuded) 3. Data timing, switching characteristics (continued) 2) Switching characteristics
ICs for Cassette/Cassette Deck Use
Rating Parameter Minimum clock pulse width Data shift set-up time Data shift hold time Data latch set-up time Data latch hold time Data latch L set-up time Data latch L hold time Symbol tW tSU tH tLSUH tLHH tLSUL tLHL Min 5 3 3 3 3 3 3 Typ Max Unit s s s s s s s Condition
4. Data format 1) Built-in switch bit No. Item 0 1 06 120 /70 70 120 07 x1/x2 x2 x1 08 T1/T2 T2 T1 09 ARM On* Off 10 Rec. play Play* Rec. 11 Stop On* Off 12 PB-adj. Off On 13 IE Off On 00 D/S
Note) *: Initial setting is performed when supply turns on
2) Built-in DAC Addr. (00) (01) (02) 06 07 08 (00) to (20)* 09 10 11 12 13 D/S to (3F): FP (peak frequency characteristics) (00) to (08)* to (10): Q (peak Q) (00) to (08)* to (10): FM (middle frequency characteristics) (03) (04) (05) (06) (07) (08) (09) (0A) (MSB)
Note) 1. *: Initial setting is performed when supply turns on 2. Inside ( ) are indicated hexadecimal number
(00) to (00) to (00)*
(20)* (20)*
to (3F): GP (peak gain) to (3F): GM (middle frequency gain) 11
to (20) to (3F): GPB-R(playback gain R-ch.)
(00)* to (20) to (3F): GPB-L(playback gain L-ch.) (00)* to (80) to (FF): GT-R (recording gain R-ch.) (00)* to (80) to (FF): GT-L (recording gain L-ch.) (00)* to (80) to (FF): Bias-2 (bias) (00)* to (80) to (FF): Bias-1 (bias) (LSB)
14
ICs for Cassette/Cassette Deck Use
s Technical Information (continued)
* Data specification description (continued) 5. Built-in switch mode table
AN7356NSC
VCA PB S1 T1 T2 S2 S3 On
Off S7 Rec.
L-boost Fm/GH S4 S5 Mute Q/FF/FR VCA S6
EQ-VR
600 LPF 5 38 6 37
08 T1/T2 T1: 1 T2: 0 T1: 1 T2: 0 T1: 1 T2: 0 T1: 1 T2: 0 T1: 1 T2: 0 T1: 1 T2: 0 T1: 1 T2: 0 T1: 1 T2: 0 2 DAC GTL (30) to (FF) (00) to (10)
2 41
11 STOP
3 40
10 R/P
4 39
7 36
8 35
Input
10 33
Output
11 32
S1 T1 input Mute
13 30
S2
14 29
S3
15 28
S4 PB output
16 27
S5 Rec.input Mute Off: 0
09 ARM Off: 1
PB Rec. PB T1 T2
T2 input T1/T2 Mute change-over
Rec.: 1 On: 0 Off: 1 Off: 1 Play: 0 On: 0 Off: 1 Rec.: 1 On: 0 On: 0 Off: 1 Play: 0 On: 0 Note) *: Initial setting when supply on 1 DAC GPB-R (10) to (3F) (00) to (08) S4 PB ouput On Mute
q
Mute: 1
Mute: 1
*T2: 1
Mute: 0 Mute: 1
q q q q
q q
q q q q
Off: 0 Mute: 1 Off: 0 Mute: 1
Mute: 1 Off: 0 Mute: 1 Off: 0
T1: 0 T2: 1 T1: 0 T2: 1
Off: 0 On: 1 Mute: 1 Off: 0 Mute: 1
Mute: 1
Mute: 1
*T2:
1
Mute: 0 Off: 0
q
Mute: 1
S6 Rec ouput On Mute
P19 FET Drive Off
3 LPF switch of playback system 12 S7 PB adj. LPF On On 1 1 Off Off 0 0
Note) Inside ( ) indicates hexadecimal number 4 Erase current 13 P21 IE IE drive On On 1 Off Off 0
Note) Inside ( ) indicates hexadecimal number 5
Equalizer volume switch-over of playback system
07 x1/x2 x1 1 x2 0 06 120/70 120 : 1 70 : 0 120 : 1 70 : 0 50 0 0 1 EQ 70 0 1 0 120 1 0 0
15
AN7356NSC
s Application Circuit Example
-VEE 2.2 k R-ch. 220 100 k 680 pF PB in 100 k 680 pF 120 100 F 6 800 pF 470 k 10 000 pF
ICs for Cassette/Cassette Deck Use
GND L-ch. 2.2 k 220 100 k 680 pF PB in
1 2
42 41
100 k
3 4 PB 5 6
600 LPF
40
39 680 pF PB EQ-VR
REG VCA VCA
120 100 F 6 800 pF 470 k
EQ-VR
38 37
7 8
36 35
10 000 pF 1 F 1 F 0.47 F 10 F EQ out 10 F S32 10 F VR in PB out S30 10 F Rec. in
600 LPF
PB out VCC Rec. in 10 F S29 0.47 F 10 F EQ out 10 F VR in 10 F 10 F 1 k 10 k Rec. out S31 S35
9
Rec. Rec.
10 11
Q/FF/FR
1.2 k 12
34 33 32 31 30 29
VCA
Q/FF/FR
L-boost
L-boost
Fm/GH
Fm/GH
13 14
VCA
15
28
S36 1 k 10 F 10 k
10 F 16 1 k 100 k
Rec. out
27
10 F
1 k 100 k Inj.
26 17
560
DAC
Bias 1
25 DA L DA L DA L DA
10 F
DAC
Bias 2 FET +VCC 10 k -VEE +VCC IE 10 k
18 19 20 21
L
24
22 k
S/P
Address
23 22
S/P
Shift register
22 k
16

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