NTE NTE1633 Datasheet

NTE1633

Integrated Circuit

TV Sound Channel w/DC Controls

Description:

The NTE1633 is a complete TV sound channel in a 20–Lead DIP type package with DC tone and vol­ume controls plus separate VCR input and output connections. Supplied in a 20–pin DIP, the device
delivers an output power of 4W into 16Ω (d = 10%, VS = 24V) or 1.5W into 8Ω (d = 10%, VS = 12V).
Included in the NTE1633 are: IF amplifier limiter, active low–pass filter, AF preamplifier and power
amplifier, turnoff muting, mute circuit and thermal protection.

High output, high sensitivity, excellent AM rejection and low distortion make the device suitable for
use in TVs of almost any type. Further, no screening is necessary because the device is free of radi­ation problems.

Features:

D Separate VCR Input and Output Pins
D 4W Output Power into 16Ω
D No Screening Required
D High Sensitivity
D Excellent AM Rejection
D Low Distortion
D DC Tone/Volume Controls
D Thermal Protection

Absolute Maximum Ratings:

Supply Voltage (Pin18), V
Voltage at Pin1, V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

i

Input Voltage (Pin2), V
Output Peak Current, I

S

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

i
O

Repetitive 1.5A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Non–Repetitive 2A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Current (Pin4), I
Power Dissipation (T
Power Dissipation (TA = +70°C), P
Operating Junction Temperature Range, T
Storage Temperature Range, T
Maximum Thermal Resistance, Junction–to–Pins, R
Maximum Thermal Resistance, Junction–to–Ambient (Note 1), R

4

= +90°C), P

pins

stg

tot

tot

J

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

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

thJPins

80°C/W. . . . . . . . . . . . . . . . . .

thJA

Note 1. Obtained with GND pins soldered to printed circuit with minimized copper area.

28V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

±V

S

1V

pp

10mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.3W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.0W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

14°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Electrical Characteristics: VS = 24V, S1: ON, ∆f = ± 25kHz, Vi = 1mV, P1 = 12kΩ, fo = 4.5MHz,

fm = 400Hz, TA = +25°C unless otherwise indicated)

Parameter Symbol Test Conditions Min Typ Max Unit

DC Characteristics

Supply Voltage (Pin18) V
Quiescent Output Voltage (Pin18) V
DC Voltage (Pin1) V
DC Voltage (Pin4) V
Quiescent Drain Current (Pin4) I

S
O
1
4

d

P2 = 12kΩ 10.8 – 27 V

11 12 13 V
P2 = 12kΩ, R1 = 270kΩ – 5.3 – V
P2 = 12kΩ – 3.2 – V

– 32 – mA

IF Amplifier & Detector

Input Limiting Voltage @ Pin2 (–3dB) V
Recovered Audio Voltage (Pin9) V

i(threshold)VO

9

Amplitude Modulation Rejection AMR m = 0.3, V1 = 1mV,

Input Resistance (Pin2) R
Input Capacitance (Pin2) C

i
i

= 4V

rms

– 50 100 µV

∆f = ± 7.5kHz, P2 = 12kΩ 140 200 280 mV

– 60 – dB

V

= 4V

O

, Note 2

rms

∆f = 0, P2 = 12kΩ – 30 – kΩ

– 6 – pF

De–Emphasis Resistance R9 C1 = 60 to 888nF 0.75 1.1 1.5 kΩ

DC Volume Control

Volume Attenuation K

(Resistance Control)

V

P2 = 0Ω – 0 – dB
P2 = 4.3kΩ 20 26 32 dB
P2 = 12kΩ – 88 – dB

Control Voltage V

C

K = 0dB – 0 – V
K = 26dB – 1.3 – V
K = 88dB – 2.6 – V

Volume Attenuation Thermal Drift

(Resistance Control)

∆K

∆T

V

pins

T

= +25° to +85°C,

pins

P

= 4.3kΩ

2

DC Tone Control

Tone Cut K

T

S1: OFF, V10 = 200mV,
P

= 12kΩ to 100kΩ,

1

f

= 10kHz

AF

Audio Frequency Amplifier

Output Power (d = 10%) P

O

VS = 24V, RL = 16Ω 3.5 4.1 –
VS = 12V, RL = 8Ω – 1.5 –

Frequency Response of Audio

Amplifier (–3dB)

B PO = 1W, RL = 16Ω,

S1: OFF, V
V

= 4V

O

= 200mV

10

, @ 400Hz

rms

Supply Voltage Rejection SVR P2 = 12kΩ, ∆ f =0,

f

= 120Hz

ripple

Note 2. Test Bandwidth = 20kHz

– –0.05 – dB

°C

– 14 – dB

W

15 50 – kHz

– 26 – dB