View UTC7312_456879.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

UTC7312 S
w
w
aDUAL RECORDING/PLAYBACK D PRE-AMPLIFIER CIRCUIT WITH . ALC w
DESCRIPTION
The UTC7312 is a monolithic integrated circuit designed for dual pre-amplifier circuit with ALC for record /playback amplifier of cassette tape recorder.
ta
ee h
4U t
om .c
LI NEAR I NTEGRATED CI RCUI T
FEATURES
*High open loop gain *Incorporates ALC detector circuit *No input coupling condenser *Low noise and current consumption *Wide ALC range *Wide operating voltage range: Vcc=5V ~ 12V Low Power ON shock noise
BLOCK DIAGRAM
Rippli filter ALC input Ch 2
Vcc
14
Ripple Filter
Phase compensat ion of ch1
ALC Time constant
NFof CH1
ALC input Ch 1
Output 1
Input of Ch1
w
w
w
t a .D
13 ALC 2
12
S a
11 4
e h
Phase compensat ion of ch2
U t4 e
NFof CH2
.c
m o
DIP-14
Output 2
10
9
Ch2 Amp
Ch1 Amp
1
GND
3
5
6
Input of Ch2
8
7
YOUW ANG ELECTRONI CO. CS LTD
w
w
w
.D
a
aS t
ee h
1
4U t
om .c
UTC7312
Characteristic
Supply Voltage Supply Current Power Dissipation Operating Temperature Storage Temperature
LI NEAR I NTEGRATED CI RCUI T
Symbol
Vcc Icc PD Topr Tstr
ABSOLUTE MAXIMUM RATINGS(Ta=25C )
Value
14 50 700 -55 to 125 -65 to 150
Unit
V mA mW
C C
ELECTRICAL CHARACTERISTICS
( Ta=25C ,Vcc=6V,f=1kHz,,RL=5.1k,unless otherwise specified)
Characteristic
Quiescent current Operating voltage Closed-llop Voltage Gain Total Harmonic Distortion Output Voltage Output noise Voltage ALC Voltage ALC Width Channel Balance
Symbol
ICCQ Vcc Gvc THD Vo Vno VALC WALC CB
Test Condition
Vi=0 Vo=0.5V Vo=0.5V THD=1% Rg=0(internal resistance 1.5k) DIN/Audio) Vin=400V Beginning 0dB to 3dB Vo=0.5V,CB=Gv1-Gv2
Min
2.5 5.0 66 1.2
Typ.
4.5 69 0.5 1.6 2.0 0.63 47 0
Max
8.0 12.0 72 1.0 5.0 0.7 +1
Unit
mA V dB % V mV V dB dB
0.55 35 -1
TYPICAL APPLICATION CIRCUIT
REC RL=5k
Playback 1.8k
Output of CH2
220F
100F
1000pF
82nF
input2
Vcc=6V
0.022F 10F
10F
39k
14
13
12
11
10
9
8
UTC7312
1
2
3
Playback
4
0.022F 10F
5
39k
6
7
100F
22F
4M
82nF REC 1.8k
RL=5k
Output of CH1
Playback
REC
YOUW ANG ELECTRONI CO. CS LTD
1000pF
Input1
2
UTC7312
Vomax,Gv vs. Supply Voltage
5 10
LI NEAR I NTEGRATED CI RCUI T
ICCQ THD vs. Supply Voltage
80
TYPICAL PERFORMANCE CHARACTERISTICS
Gv, THD vs. Frequency
Maximum Output Voltage (V)
Total Harmonic Distortion (%)
Quiescent current (mA)
4
8
70
3
71
Voltage Gain (dB)
6
Voltage Gain (dB)
ICCQ
GV Vcc=6V Vo=0.5V RL=5.1k FLAT THD
60
Gv
2 70
4
2
50
2
1
69
2
1
THD
0 0 3 6 9 12 15
40
1
0 0 3 6 9 12 15
68
0
30 10 100 1k 10k 100k
0
Supply Voltage (V)
Supply Voltage (V)
Frequency (Hz)
Gv, THD vs. Frequency
80 100
Vo, THD vs. Input Voltage
100
Vo, THD vs. Input Voltage
Vcc=6V f=1kHz RL=5.1k FLAT the dot line is measured at Vcc=12V
Total Harmonic Distortion (%)
Total Harmonic Distortion (%)
70
Voltage Gain (dB)
Output Voltage (V)
60
GV
50 2
1
Vo
Output Voltage (V)
10
10
10
10
1
1
1
THD Vo
0.1 0.1
40
1
0.1
0.1
THD
0.01 0.01 0.1 1 10
THD
30 10 100 1k 10k 100k 0 0.01 0.01 0.1 1 10
Frequency (Hz)
Input Voltage (mV)
Input Voltage (mV)
Gvo vs. Frequency
10
VALC THDvs. Input Voltgae
Open Circuit Volatge Gain (dB)
120
100
ALC Voltage (dBV)
Pin 6.9
100F
5
Vcc=6V f=1kHz
0
80
-5 1.5 -10 1.0 0.5
60
40 10 100 1k 10k 100k
-15 -80 -60 -40 -20 0
0
Frequency (Hz)
Input Voltage (mV)
YOUW ANG ELECTRONI CO. CS LTD
Total Harmonics Distortion (%)
Vcc=6V Vo=1V
Total Harmonic Distortion (%)
Vcc=6V Vo=0.5V RL=5.1k NAB
Total Harmonic Distortion (%)
f=1kHz Vcc=0.5V RL=5.1k THD=1%
Vomax
3

▲Up To Search▲

Price & Availability of UTC7312

	To Download UTC7312 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .