NTE NTE7146 Datasheet

NTE7146

Integrated Circuit

Dual (12W + 12W) Stereo Amplifier w/Muting

Description:

The NTE7146 is a class AB dual audio power amplifier assembled in an 11–Lead Staggered SIP type
package specifically designed for high quality sound applications such as HI–FI music centers and
stereo TV sets.

Features:

D Wide Supply Voltage Range
D High Output Power: 12W + 12W @ VS = 28V, RL = 8Ω, THD = 10%
D Mute facility (Pop Free) with Low Consumption
D AC Short Circuit Protection
D Thermal Overload Protection

Absolute Maximum Ratings:

Supply Voltage, V
Output Peak Current, I

S

O

Repetitive (f > 20Hz) 2.5A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Non–Repetitive (t = 100µs) 3.5A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Total Power Dissipation (TC = +70°C), P
Operating Temperature Range, T
Storage Temperature Range, T

opr

stg

tot

Maximum Thermal Resistance, Junction–to–Case, R

0° to +70°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–40° to +150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

thJC

35V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

25W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Electrical Characteristics: (TA = +25°C, VS = 28V, RL = 8Ω, GV = 30dB, f = 1kHz unless

otherwise specified)

Parameter Symbol Test Conditions Min Typ Max Unit

Supply Voltage V
Quiescent Output Voltage V
Total Quiescent Current I
Output Power (RMS) P

Total Harmonic Distortion THD PO = 1W, f = 1kHz – 0.02 0.2 %

S
O

q

THD = 10%, TA = +85°C 10 12 – W

O

THD = 1% – 9.5 – W

PO = 0.1W to 8W, f = 100Hz to 10kHz – – 0.5 %

10 – 32 V

– 13.5 – V
– 70 95 mA

Electrical Characteristics (Cont’d): (TA = +25°C, VS = 28V, RL = 8Ω, GV = 30dB, f = 1kHz

unless otherwise specified)

Parameter Symbol Test Conditions Min Typ Max Unit

Crosstalk CT RS = 10kΩ, f = 1kHz – 70 – dB

RS = 10kΩ, f = 10kHz – 60 – dB
Input Resistance R
Low Frequency Roll–Off (–3dB) f
High Frequency Roll–Off (–3dB) f
Total Input Noise Voltage e

I
L
H

A Curve; RS = 10kΩ – 1.5 – mV

N

100 200 – kΩ

– 40 – Hz
– 80 – kHz

f = 22Hz to 22lHz, RS = 10kΩ – 3 10 µV
Supply Voltage Rejection (Ea Channel) SVR RS = 10kΩ, f = 100Hz, Vr = 0.5V 45 60 – dB
Thermal Shutdown Junction Temperature T

J

– 145 – °C

Mute Function

Mute Threshold VT
Play Threshold VT
Mute Attenuation ATT
Quiescent Current @ Mute I

qMUTE

MUTE

PLAY

AM

1.0 1.6 – V
– 4.5 – V

70 100 – dB

– 7 10 mA

Pin Connection Diagran

(Front View)

N.C.

11

Output 1

10

(+) V

9
8
7
6
5
4
3
2
1

S

Output 2
N.C.
GND
Non–Invert Input 2
Invert Input 2
SVR/Muting
Invert Input 1
Non–Invert Input 1

.790 (20.0)

.122 (3.1)

Max

.430

(11.0)

111

.700

(17.9)

.066 (1.7) .100 (2.54) .100 (2.54)

.570

(14.4)