Sony STK490 Service Manual

NTE1882

Integrated Circuit

Module – AF Power Amp,

100W Min, Dual Power Supplies

Features:

D Compact packaging supports slimmer set designs
D Simpler heat sink design facilitates thermal design of slim stereo sets
D Current mirror circuit application reduces distortion to 0.08%.
D Supports addition of electronic circuits for thermal shutdown and load–short protection circuit

as well as pop noise muting which occurs when the power supply switch is turned on and off

Absolute Maximum Ratings

Maximum Supply Voltage, V
Thermal Resistance, Junction–to–Case, R
Junction Temperature, T
Operating Substrate Temperature, T
Storage Temperature Range, T
Available Time for Shorted Load (V

Recommended Operating Conditions:

Recommended Supply Voltage, V
Load Resistance, R

L

Operating Characteristics:

Parameter Symbol Test Conditions Min Typ Max Unit

Quiescent Current I
Output Power P
Total Harmonic Distortion THD PO = 1.0W, f = 1kHz – – 0.08 %
Frequency Response fL, f
Input Resistance r
Output Noise Voltage V
Midpoint Voltage V

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

max ±73V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CC

thJC

J

C

stg

= ±51V RL = 8Ω, f = 50Hz, PO = 100W), t

CC

(TA = ±25°C unless otherwise specified)

CC

(TA = ±25°C, VCC = ±51V, RL = 8Ω, VG = 40dB, Rg = 600Ω,
100k LPF ON, R

CCO

NO

VCC = ±61V 15 – 120 mA
THD = 0.08%, f = 20Hz to 20kHz 100 – – W

O

PO = 1.0W, +0dB, –3dB – 20 to 50k – Hz

H

PO = 1.0W, f = 1kHz – 55 – kΩ

i

VCC = ±61V, Rgm = 10kΩ – – 1.2 mV
VCC = ±61V –70 0 70 mV

N

(non–inductive)

L

1.1°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

+150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

+125°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–30° to +125°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

s

1sec. . . . . . . . .

±51V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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

rms

Note 1 Output noise voltage represents the peak value on the rms scale (VTVM). The noise voltage wave-

form does not include the pulse noise.

Pin Connection Diagram

(Front View)

15

Bootstrap
V (+)

14
13

Output
V (–)

12
11 Compensation

I

10

Adjust

Emitter Bypass

9

Compensation

8

I

7

Adjust

Test Point

6

Bypass

5

Bias

4

Substrate

3

NFB

2

Input

1

.141 (3.6)

Dia (2 Holes)

2.520 (64.0)

2.190 (55.6)

.334 (8.5)

1.440
(36.4)

.737

(18.7)

115

.100 (2.54)

.020(.508)1.400 (35.56)