NTE1789
Integrated Circuit
TV Sound Preamp, AF Output, Volume Control
Description:
The NTE1789 is an integrated circuit in a 9–Lead SIP type package designed for use in TV sound
output circuit.
Features:
D DC Volume Control System
Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)
Supply Voltage, V1–7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14.4V
Supply Voltage, V9–7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26V
Circuit Voltage, V3–7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to 7V
Circuit Voltage, V4–7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to V1–7
Circuit Voltage, V6–7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to V9–7
V
V
Peak Circuit Current, I4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –10 to +3mA
Peak Circuit Current, I8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –1.2 to +1.2mA
Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.6W
Operating Ambient Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –20° to +70°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +150°C
Electrical Characteristics: (TA = +25°C unless otherwisepsecified)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
Circuit Current
I
SW : 1, SW : 1
7.1 9.5 11.9
mA
V
I
1
2
Circuit Voltage
V
V
V
V
SW : 2, SW : 1
–
–
–
–
5.4
8.5
8.8
8.8
–
–
–
–
–
2–7
5–7
6–7
8–7
1
2
SW : 2, SW : 1
V
1
2
SW : 2, SW : 1
V
1
2
SW : 2, SW : 2
V
1
2
Max. Output Voltage
Voltage Gain
P max V = 12V, f = 1kHz, THD = 10%
2.0 2.3
W
dB
%
dB
O
4
G
V = 12V, V = 0.1V , f = 1kHz
28.5 30.5 32.5
V
4
i
rms
Total Harmonic Distortion
Max. Attenuation
THD
V = 12V, P = 1W, f = 1kHz
–
–
0.8 1.2
–95 –85
4
O
A
f = 1kHz, V = 0.1V , Ratio between
i rms
tt
V = 12V and V = 0V
4
4
Output Noise Voltage
V
no
V = 0V, V = 0V
–
0.6 1.0 mV
rms
4
i
rms
Mute Operating Voltage
V
3–7
f = 1kHz, V = 12V, when V = 0V
rms
2.45 2.65 2.85
V
4
8