NTE NTE7116 Datasheet

NTE7116

Integrated Circuit

Phase Lock Loop (PLL) Stereo Decoder

(BTSC System)

Description:

The NTE7116 is a phase lock loop (PLL) stereo decoder in a 20–Lead DIP type package designed
primarily for low cost stereo decoding in a low–to–medium–line TV. The MUX input (Pin1) is a low
impedance current input, the gain of the input amplifier is therefore determined by the external resistor
R1. All characteristics are measured with R1 = 47kΩ. The de–emphasis of (L, R) and (L – R) can
be chosen by means of external capacitors and resistors. The supply voltage range of the device is
from 7V to 16V.

Features:

D Wide Supply Voltage Range
D Automatic Mono/Stereo Switching (Pilot Presence Detector)
D LED Driver for Stereo Indicator
D Smooth Mono/Stereo Control
D Matrix and Two Amplifiers for Left and Right Output Signals
D A Source Selector to Switch between the MUX Signal and an External Signal
D Mute Circuit for 60dB Muting of the Output Level
D External De–Emphasis Control of (L, R) and (L – R)
D 6dB Fixed Attenuation of (L – R) with respect to (L + R) Prior to Matrix
D All Pins are Protected Against Electrostatic Discharge (ESD)

Absolute Maximum Ratings:

Supply Voltage Range (Pin5), V
LED Driver Current (Peak Value), I
Total Power Dissipation (T
Electrostatic Handling, V

A

es

P

3

= +25°C), P

tot

Operating Ambient Temperature Range, T
Storage Temperature Range, T

stg

18V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

75mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.9W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–2 to +2kV. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

A

0° to +70°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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

DC Characteristics: (VS = 8.5V, TA = +25°C, all voltages are with respect to GND (Pin20), all

currents are positive into the device unless otherwise specified)

Parameter Symbol Test Conditions Min Typ Max Unit

Supply Voltage V
Total Current Consumption I
Power Dissipation P

tot

tot

S

Without LED Driver – 19 25 mA

7.0 8.5 16.0 V

– 160 – mW

Voltage

Pin1

Pins 8, 9, 10, 11, 12, & 13 V
DC Output Current (Pin14 & Pin15) –I14, I
LED Driver Current (Pin3) I
Switch “VCO–OFF” Voltage V
Switch “VCO–OFF” Current I

V

1

8–13

3

19

19

– 2.1 – V
– 4.2 – V

15

1.1 1.4 1.8 mA
– – 20 mA

I19 = 50µA – 2 – V

50 – – µA

AC Characteristics: (VS = 8.5V, TA = +25°C, AC Conditions: (1) Input signal (Vi) of 815mV

L = 1, R = 1 (mono), f
of 1.2V

for L = 1, R = 0 and no dbx, fm = 1kHz (stereo) and V

P–P

= 1kHz (80% modulation); (2) MUX input signal (Vi)

m

= 200V

pilot

(3) S1 open, unless specified (without L – R filter), VCO measured with an
external IF roll–of f network (–2dB at 31.5kHz = 2f

) at the input. All the above

H

conditions apply unless otherwise specified)

Parameter Symbol Test Conditions Min Typ Max Unit

P–P

for

P–P

;

Overall Performance Vi to V

Input Current (rms) I
Overall gain G
AF Output Voltage (rms) V11 = V

o

(rms)

O

V15 = V

Mono; R1 = 47kΩ 4.0 5.8 7.0 dB

10
14

– – 12 µA

460 560 640 mV

– 245 – mV

Total Harmonic Distortion THD Note 1 – 0.3 0.5 %
Output Voltage V11 = V10THD = 1% – 800 – mV
Output Channel Unbalance V11/V

10

– 0.1 1.0 dB

Channel Separation α L = 1, R = 0 24 28 – dB
Signal to Noise Ratio S/N Bandwidth 20Hz to 16kHz – 76 – dB
Pilot Presence Detector (Note 2)
Switching to

Stereo

V

pilot

– 40 60 mV

Mono 15 30 – mV
Hysteresis ∆V

Channel Separation

Full Stereo

pilot

α

V16 ≥ 1.25V

– 2.5 – dB

24 28 – dB

Smooth Operation V16 = 1V Typ – 10 – dB

Attenuation (L – R) – 6 – dB

Note 1. Guaranteed for mono, mono + pilot and stereo.
Note 2. Adjustable.