NTE NTE1789

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 V
Circuit Voltage, V6–7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to V9–7 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
II
SW1: 1, SW2: 1
7.1
9.5
11.9
mA
Circuit Voltage
V2–7
SW1: 2, SW2: 1
–
5.4
–
V
V5–7
SW1: 2, SW2: 1
–
8.5
–
V
V6–7
SW1: 2, SW2: 1
–
8.8
–
V
V8–7
SW1: 2, SW2: 2
–
8.8
–
V
2.0
2.3
–
W
Max. Output Voltage
Voltage Gain
Total Harmonic Distortion
POmax V4 = 12V, f = 1kHz, THD = 10%
GV
THD
V4 = 12V, Vi = 0.1Vrms, f = 1kHz
28.5 30.5 32.5
dB
V4 = 12V, PO = 1W, f = 1kHz
–
0.8
1.2
%
Max. Attenuation
Att
f = 1kHz, Vi = 0.1Vrms, Ratio between
V4 = 12V and V4 = 0V
–
–95
–85
dB
Output Noise Voltage
Vno
V4 = 0V, Vi = 0Vrms
–
0.6
1.0
mVrms
Mute Operating Voltage
V3–7
f = 1kHz, V4 = 12V, when V8 = 0Vrms
2.45 2.65 2.85
V
Pin Connection Diagram
(Front View)
9 VCC 2 (18V Typ)
8 Sound Output
7 GND
6 Feedback
5 Filter
4 Volume Control
3 Mute
2 Sound Input
1 VCC 1 (12V Typ)
.890 (22.6)
.728 (18.5)
.067 (1.72)
.591 (15.0)
.150 (3.8)
.328
.229 (8.33)
(5.82)
.059
(1.5)
1
9
.250
(6.35)
.281
(7.14)
.100 (2.54)