NTE NTE1792

NTE1792
Integrated Circuit
Dual Attenuator
Description:
The NTE1792 is a silicon monolithic integrated circuit in a 9–Lead SIP package designed for sound
control applications.
Features:
D Two separate attenuators
D The characteristic control curve is linear against logarithmic output.
D Channel Separation: 64dB MIN
D Typical Application: Sound MPX attenuator for TV, Radio and mobile receiver.
Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)
Supply Voltage, VCC
Minimum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0V
Maximum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15V
Signal Input Voltage at Pin4 and Pin6, Vin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Vp–p
Control Input Voltage at Pin2 and Pin8, Vcont
Minimum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0V
Maximum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15V
Power Dissipation (TS = +75°C), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 350mW
Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –20° to +75°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40° to +125°C
Electrical Characteristics: (VCC = 12V, TA = +25°C, f = 1kHz unless otherwise specified)
Parameter
Symbol
Supply Voltage
VCC
Supply Current
ICC
Relative Output
Channel Separation
Total Harmonic Distortion
Power Source Noise Rejection
Test Conditions
Min Typ Max Unit
8.0
12.0 14.4
No Signal
8.0
10.5 16.0 mA
AV
Vcont = 1V, Vin = 500mVrms
–2
0
+2
dB
Sep
Vcont =5V, Vin = 500mVrms
64
70
–
dB
T.H.D.
Vcont = 5V, Vin = 500mVrms
–
0.5
1.0
%
Hum f = 60Hz,
Hum Level = 1Vp–p
30
–
–
dB
R.R.
V
Electrical Characteristics (Cont’d): (VCC = 12V, TA = +25°C, f = 1kHz unless otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
Output Voltage 1
ATT1
Vcont = 5V, Vin = 500mVrms
–1
0
+1
dB
Output Voltage 2
ATT2
Vcont = 5V, Vin = 500mVrms
–34
–30
–26
dB
Output Voltage 3
ATT3
Vcont = 5V, Vin = 500mVrms
–
–77
–71
dB
Input Resistance
Ri
f = 1kHz
12
–
24
kΩ
Output Resistance
Ro
f = 1kHz
200
–
450
Ω
Pin Connection Diagram
9 Reg VCC Output
8 Control 2
7 Output 2
6 Input 2
5 GND
4 Input 1
3 Output 1
2 Control 1
1 VCC
.900 (22.86)
1
.110 (2.79)
9
.226
(5.75)
Max
.125
(3.18)
.100 (2.54)