UTC-IC UTCTA7668BP

UTC TA7668BP LINEAR INTEGRATED CIRCUIT
DUAL PRE-AMPLIFIER FOR TAPE
RECORDER
DESCRIPTION
The UTC TA7668BP is a dual pre-amplifier with ALC and
muting designed for use recorder/playback amplifier of tape
recorder. It is suitable for a stereo set and a radio cassette
recorder.
FEATURES
*Build-in ALC detector circuit
*Build-in muting circuit
*Wide operating voltage range( 6V to 15V)
DIP-16
BLOCK DIAGRAM
Ch1 Pre-Out
and Rec in
Ch1 Rec Mute Mute
Output Output Input
5
PreAMP
Ch1 Pre IN
7
ALC
8
ALC
DET
16
Vcc
2
Vs
10
Rec
AMP
11
9
Pre
GND
12
Ch2 Pre-Out
and Rec In
ABSOLUTE MAXIMUN RATING(Ta=25°C)
PARAMETER
SYMBOL
Supply Voltage
Power Dissipation
Operating Temperature
13
14
1
Ch2 Rec Mute
Output Output
Rec
GND
VALUE
UNIT
VCC
16
V
PD
750
mW
TOPR
Storage Temperature
TSTG
Note: De-rated above Ta=25°C in proportion of 6mW/°C.
UTC
15
Rec
AMP
Pre
AMP
Ch2 Pre IN NF
3
6
Ch1 Pre IN NF
Ch2 Pre IN
4
-25~75
°C
-55~150
°C
UNISONIC TECHNOLOGIES CO., LTD.
1
QW-R110-008,A
UTC TA7668BP LINEAR INTEGRATED CIRCUIT
DC VOLTAGE(VCC=9V,Ta=25°C, no input signal)
PIN NO.
SYMBOL
VALUE
UNIT
1
V1
0
V
2
V2
8.2
V
3
V3
0
V
4
V4
3.3
V
5
V5
1.3
V
6
V6
1.3
V
7
V7
0
V
8
V8
0.9
V
9
V9
0
V
10
V10
0
V
11
V11
1.3
V
12
V12
1.3
V
13
V13
3.3
V
14
V14
0
V
15
V15
2.4
V
16
V16
9
V
ELECTRICAL CHARACTERISTICS(Ta=25°C, Vcc=9V, f=1kHz, unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITIONS
ICCQ
VIN=0
Open Loop Voltage Gain
GVO
VIN=-80dBm
65
78
dB
Maximum Output Voltage
VOM(1)
THD=1%
0.5
0.8
Vrms
Total Harmonic Distortion
Quiescent Circuit Current
MIN
TYP
MAX
UNIT
8.5
10.5
mA
PRE AMPLIFIER
THD(1)
VO=0.2Vrms
0.15
0.5
%
Output Noise Voltage
VNO
Rg=2.2KΩ, B.P.F., NAB,
0.26
0.6
mVrms
Cross Talk
C.T.
Rg=2.2KΩ
47
60
Closed Loop Voltage Gain
GV
RL=10KΩ
12.7
14.7
Maximum Output Voltage
VOM(2)
THD=1%
2
2.5
Total Harmonic Distortion
THD(2)
VO=1.5Vrms
0.2
%
ALC Range
RALC
VIN=-60dBm,RIN=2.2KΩ
45
dB
VIN=-20dBm,
0.3
1
%
0.9
1.1
1.42
Vrms
45
55
30Hz~20kHz
dB
REC AMPLIFIER
Total Harmonic Distortion
THD(ALC)
(ALC)
ALC Voltage
16.7
dB
Vrms
RIN=2.2KΩ,RL=10KΩ
VO(ALC)
VIN=-20dBm,
RIN=2.2KΩ,RL=10KΩ
Muting Attenuation
ALC Balance
UTC
ATT
BALC
VIN=-20dBm
0
dB
2
dB
UNISONIC TECHNOLOGIES CO., LTD.
2
QW-R110-008,A
UTC TA7668BP LINEAR INTEGRATED CIRCUIT
TEST METHOD
SYMBOL
S1
S2
S3
S4
*
*
ICCQ
*
*
GVO
OFF
CH1
VOM(1)
OFF
CH1
GV
THD(1)
OFF
CH1
GV
VNO
OFF
OFF
CT
OFF
GV
OFF
S5
S6
S7
S8
S9
S10
Measure
Terminal
*
*
*
*
OFF
*
Vcc
CH1
*
*
*
OFF
OFF
Pre-Out
NAB
CH1
*
*
*
OFF
OFF
Pre-Out
NAB
CH1
*
*
*
OFF
OFF
Pre-Out
GV
NAB
CH2
*
*
OFF
OFF
Pre-Out
CH1
GV
FLAT CH1→CH2
*
*
*
OFF
OFF
Pre-Out
CH1
GV
FLAT
*
CH1
CH2
OFF
OFF
Pre-Out→
GVO FLAT
CH1
Rec-Out
VOM(2)
OFF
CH1
GV
FLAT
CH2
*
CH1
CH2
OFF
OFF
Rec-Out
THD(2)
OFF
CH1
GV
FLAT
CH2
*
CH1
CH2
OFF
OFF
Rec-Out
RALC
OFF
CH1
GV
FLAT
CH2
*
CH1
CH2
OFF
ON
Rec-Out
THD(ALC)
OFF
CH1
GV
FLAT
CH2
*
CH1
CH2
OFF
ON
Rec-Out
VO(ALC)
OFF
CH1
GV
FLAT
CH2
*
CH1
CH2
OFF
ON
Rec-Out
ATT
OFF
CH1
GV
FLAT
CH1
*
*
OFF
Mute-Out
ON
Rec-Out
CH1 OFF→
ON
BALC
CH2
UTC
CH1→CH2
GV
FLAT
*
*
CH1→CH2
*
OFF
UNISONIC TECHNOLOGIES CO., LTD.
3
QW-R110-008,A
UTC TA7668BP LINEAR INTEGRATED CIRCUIT
TEST CIRCUIT
UTC
UNISONIC TECHNOLOGIES CO., LTD.
4
QW-R110-008,A