NTE NTE1685 Datasheet

NTE1685

Integrated Circuit

Dual AF Power Amp, 3.5W

Features:

D High Output: 3.5W typ. x 2
D Soft Clip, Causing Little Harmonic Disturbance to Radios
D Small Pop Noise at the Time of Power Switch ON/OFF
D Built–in Protector Against Abnormal Modes (Thermal Shutdown, Overvoltage)

Absolute Maximum Ratings:

Maximum Supply Voltage, V
Maximum Output Current, I
Allowable Power Dissipation, P
Operating Temperature Range, T
Storage Temperature Range, T

Recommended Operating Conditions

Recommended Supply Voltage, V
Operating Supply Voltage Range, V
Recommended Load Resistance, R

Electrical Characteristics

(TA = +25°C unless otherwise specified)

max 25V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CC

peak 2.0A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

O

max 7.5W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

d

opr

stg

–20° to +75°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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

: (TA = +25°C unless otherwise specified)

CC

CC
L

9V to 24V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

: (TA = +25°C, VCC = 16V, RL = 8Ω, f = 1kHz, Rg = 600Ω unless

otherwise specified)

Parameter Symbol Test Conditions Min Typ Max Unit

Quiescent Current I
Voltage Gain V
Output Power P
Total Harmonic Distortion THD PO = 0.5W – 0.3 1.0 %

CCO

G
O

THD = 10% 3.0 3.5 – W

– 46 62 mA

48 50 52 dB

16V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8Ω. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Output Noise Voltage V
Ripple Rejection Ratio R
Crosstalk CT Rg = 10kΩ, BW = 20Hz to 20kHz 40 55 – dB
Channel Balance ∆VG – – 1.5 dB

NO

Rg = 10kΩ, BW = 20Hz to 20kHz – 0.65 1.5 mW
Rg = 0, Vr = 500mW 40 50 – dB

r

Pin Connection Diagram

(Front View)

10

9
8

7 Output 2
6

5
4

3 Decoupling
2

Output 1
V

CC

Power Amp GND

Feedback 2
Input 2

Preamp GND

Input 1
Feedback 11

.650

(16.5)

.532

(13.5)

.138 (3.5)

1.030 (26.0)

.937 (23.8)

.136 (3.45) Dia
(2 Holes)

.473 (12.0)

.142

(3.6)

.331

(8.4)

110

.100 (2.54)

.900 (22.8)