NTE NTE7067 Datasheet

NTE7067

Integrated Circuit

Audio IF Detector for High Quality

Multi–Channel TV & VCR

Description:

The NTE7067 is a 4.5MHz to 6.5MHz intercarrier audio IF detector for high–quality multi–channel TV
and VCR sound systems. It is designed for use is quasi–parallel configurations to eliminate audio
buzz and minimize other side–effects present in conventional detection circuits.

This device includes a 3–stage IF amplifier, IF AGC circuit, and transistor intercarrier audio detection
circuit. The NTE7067 operates from a single 8 to 10V power supply and is available in a 9–Lead SIP
type package.

Features:

D Compact Package
D Excellent Audio S/N Characteristics
D Coil–less Circuit

Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)
Maximum Supply Voltage

VCCmax 12V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

V3max (VCC = 12V) 12V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Allowable Power Dissipation (TA ≤ +65°C), Pdmax 540mW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Maximum Output Current, I6max 3mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating Temperature Range, T
Storage Temperature Range, T

Recommended Operating Characteristics: (TA = +25°C unless otherwise specified)
Recommended Supply Voltage, V

Operating Voltage Range, V7op 8 to 10V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

opr

stg

7

–10° to +65°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–55° to +125°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Electrical Characteristics: (TA = +25°C, VCC = 9V unless otherwise specified)

Parameter Symbol Test Conditions Min Typ Max Unit

Supply Current I

7

Input Sensitivity VI IF input level for 0.35V

V3 (IF AGC) = 4V 17 22 32 mA

detector

P–P

output with 40% modulation

AGC Range GR (Maximum input for VO = 0.35V

) – Vi60 70 – dB

P–P

Maximum Input Level Vimax IF input level for detector output increase

of 1dB

Detector Output Amplitude V

06

4.5MHz output level, P/S = 13dB 90 130 180 mV rms

Audio S/N S/N fp = 58.75MHz, 87.5% staircase modu-

lation, f
f

m

= 54.25MHz, (S: FM ±25kHz,

s

= 400Hz N: Non–modulation)

P/S = 13dB

Pin Connection Diagram

(Front View)

Detector Filter

9
8

N.C.

7

V

CC

Detector Output

6
5 GND

TP (Open)

4

IF AGC Filter

3
2

IF Input

1

IF Input

34 42 50 dBµ

100 200 – dBµ

50 56 – dB

.862 (21.89) .118 (3.0)

.059 (1.5)

.053 (1.35)

.177
(4.5)

19

.110

(2.8)

.100 (2.54) .031 (0.78)