NTE NTE801 Datasheet

NTE801

Integrated Circuit

FM Stereo Demodulator

Description:

The NTE801 is a monolithic device in a 14–Lead DIP type package designed for use in solid–state
stereo receivers.

Features:

D Requires No Inductors
D Low External Part Count
D Only Oscillator Frequency Adjustment Necessary
D Integral Stereo/Monaural Switch 75mA Lamp Driving Capability
D Wide Dynamic Range: 0.5 to 2.8V
D Wide Supply Range: 8V to 14V
D Excellent Channel Separation Maintained Over Entire Audio Frequency Range
D Low Distortion: Typically 0.3% THD at 560mV (RMS) Composite Input Signal
D Excellent SCA Rejection

Composite Input Signal

(p–p)

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

Power Supply Voltage 14V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Lamp Current 75mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Power Dissipation (Package Limitation) 625mW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Derate Above TA = +25°C 5.0mW/°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating Temperature Range, T
Storage Temperature Range, T

stg

A

–40° to +85°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–65° to +150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Electrical Characteristics: (VCC = +12V, TA = +25°C, Vin = 560mV

(L or R only), Pilot Level = 100mV

Parameter Test Conditions Min Typ Max Unit

(RMS)

(2.8V

RMS

(10%), unless otherwise specified)

), fm = 1kHz

(P–P)

Maximum Standard Composite Input Signal THD = 0.5% 2.8 – – V
Maximum Monaural Input Signal THD = 1.0% 2.8 – – V

P–P
P–P

Input Impedance Pin2 20 50 – kΩ
Stereo Channel Separation 30 40 – dB
Audio Output Voltage Desired Channel – 485 – mV
Monaural Channel Balance Pilot Level = 0V – – 1.5 dB
Total Harmonic Distortion – < 0.3 – %
Ultrasonic Frequency Rejection 19kHz – 34.4 – dB

38kHz – 45 – dB
SCA Rejection 67kHz, No Modulation, Measured 9kHz Beat – 75 – dB
Stereo Switch Level Pilot Only, Lamp ON – 18 23 mV

Pilot Only, Lamp OFF 5.0 10 – mV
Capture Range Permissible Tuning Error – 3.5 – %
Supply Current Lamp OFF – 13 – mA

rms

rms
rms

Pin Connection Diagram

V

CC

Input

Audio Amp Output

Left Ch Output

1
2

3
4
5Right Ch Output
6Lamp Indicator
7GND

14

OSC RC Network
19kHz Loop Filter

13
12

19kHz Loop Filter

11

Demodulator Input

10 19kHz Output

9 Stereo Switch Filter
8 Stereo Switch Filter

14 8

17

.785 (19.95)

Max

.200 (5.08)

Max

.100 (2.45) .099 (2.5) Min

.600 (15.24)

.300

(7.62)