NTE NTE1477 Datasheet

NTE1477

Integrated Circuit

2 Channel Amplifier for Headphone Use

Description:

The NTE1477 is a integrated circuit in a 14–Lead DIP type package suitable for use as a headphone
driving amplifier in the output amplifier of a tape deck or a tuner.

Features:

D Wide Operating Voltage Range
D Small Pop Noise by Means of Emitter Feedback
D Dual Amplifier Involved–Few Peripheral Parts
D Small Output Noise Voltage

Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)
Maximum Supply Voltage, V
Maximum Supply Current (only Pin2: flow–in; Pin7, 8: flow–out), I
Allowable Power Dissipation, P
Operating Temperature Range, T
Storage Temperature Range, T

max 22V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CC

CP

max 1.05W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

D

opr

stg

–20° to +70°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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

0.5A. . . . . . . . . . . . . . . . . . . . .

Recommended Operating Condition

Recommended Supply Voltage, V
Load Resistance, R

Operating Characteristics

L

: (TA = +25°C, VCC = 14V, RL = 8Ω f = 1kHz, Rg = 600Ω unless

: (TA = 25°±C)

CC

8Ω or 200Ω. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

otherwise specified)

Parameter Symbol Test Conditions Min Typ Max Unit

Quiescent Current I
Voltage Gain V
Output Voltage V
Total Harmonic Distortion THD VO = 0.1V – 0.5 1.0 %
Input Resistance r
Output Noise Voltage V
Channel Separation Rg = 1kΩ –50 –68 – dB
Gain Difference – – 1 dB

CCO

G
O

i

NO

VO = 77.5mV 7 9 11 dB
THD = 10% 0.58 0.68 – V

VO = 0.2V 20k 30k 40k Ω
Rg = 1kΩ, filter: 15 to 30kHz – 6 18 µV

6 8 15 mA

14V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Pin Connection Diagram

Tab

CC

1
2

3
4

N.C. N.C.

V

Bias

Rt Ch Input

5Bypass
6Rt Ch Output

N.C.

7

.099 (2.52)

14 8

14

Bypass

13

Bias

12
11 Lt Ch Input

Bypass

10

Lt Ch Output

9
8 GND

.252

(6.45)

.265

(6.5)

17

.082 (2.1) Dia

.748 (19.0)

.167

(4.26)

.100 (2.54) .137 (3.5)

.236 (6.0)

.300

(7.62)