NTE NTE7116

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), VP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18V
LED Driver Current (Peak Value), I3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75mA
Total Power Dissipation (TA = +25°C), Ptot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.9W
Electrostatic Handling, Ves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –2 to +2kV
Operating Ambient Temperature Range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0° to +70°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –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
7.0
8.5
16.0
V
–
19
25
mA
Supply Voltage
VS
Total Current Consumption
Itot
Power Dissipation
Ptot
–
160
–
mW
Voltage
Pin1
V1
–
2.1
–
V
Pins 8, 9, 10, 11, 12, & 13
V8–13
–
4.2
–
V
DC Output Current (Pin14 & Pin15)
–I14, I15
1.1
1.4
1.8
mA
I3
–
–
20
mA
–
2
–
V
50
–
–
µA
LED Driver Current (Pin3)
Switch “VCO–OFF” Voltage
V19
Switch “VCO–OFF” Current
I19
AC Characteristics:
Without LED Driver
I19 = 50µA
(VS = 8.5V, TA = +25°C, AC Conditions: (1) Input signal (Vi) of 815mVP–P for
L = 1, R = 1 (mono), fm = 1kHz (80% modulation); (2) MUX input signal (Vi)
of 1.2VP–P for L = 1, R = 0 and no dbx, fm = 1kHz (stereo) and Vpilot = 200VP–P;
(3) S1 open, unless specified (without L – R filter), VCO measured with an
external IF roll–off network (–2dB at 31.5kHz = 2fH) at the input. All the above
conditions apply unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
–
–
12
µA
4.0
5.8
7.0
dB
V11 = V10
460
560
640
mV
V15 = V14
–
245
–
mV
–
0.3
0.5
%
–
800
–
mV
–
0.1
1.0
dB
L = 1, R = 0
24
28
–
dB
Bandwidth 20Hz to 16kHz
–
76
–
dB
–
40
60
mV
15
30
–
mV
–
2.5
–
dB
V16 ≥ 1.25V
24
28
–
dB
V16 = 1V Typ
–
10
–
dB
–
6
–
dB
Overall Performance Vi to Vo
Input Current (rms)
Overall gain
AF Output Voltage (rms)
Total Harmonic Distortion
Output Voltage
Output Channel Unbalance
I(rms)
GO
THD
Mono; R1 = 47kΩ
Note 1
V11 = V10 THD = 1%
V11/V10
Channel Separation
α
Signal to Noise Ratio
S/N
Pilot Presence Detector (Note 2)
Switching to
Stereo
Vpilot
Mono
Hysteresis
Channel Separation
Full Stereo
Smooth Operation
∆Vpilot
α
Attenuation (L – R)
Note 1. Guaranteed for mono, mono + pilot and stereo.
Note 2. Adjustable.
AC Characteristics (Cont’d): (VS = 8.5V, TA = +25°C, AC Conditions: (1) Input signal (Vi) of
815mVP–P for L = 1, R = 1 (mono), fm = 1kHz (80% modulation); (2)
MUX input signal (Vi) of 1.2VP–P for L = 1, R = 0 and no dbx, fm = 1kHz
(stereo) and Vpilot = 200VP–P; (3) S1 open, unless specified (without
L – R filter), VCO measured with an external IF roll–off network (–2dB
at 31.5kHz = 2fH) at the input. All the above conditions apply unless
otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max Unit
Carrier & Harmonic Suppression at the Output (Note 3)
Pilot Signal Suppression
αfH
fpilot = 15.734kHz (1fH)
32
36
–
dB
Subcarrier Suppression
α2fH
f = 2fH
–
60
–
dB
VCO Suppression
α12fH
f = 12fH
–
75
–
dB
SAP Signal Suppression
(Second Audio Program)
α5fH
f = 5fH
–
60
–
dB
α2
Spurious Signal, fs = 1kHz
–
80
–
dB
α3
Spurious Signal, fs = 1kHz
–
70
–
dB
f = 120Hz, Vripple = 100mV, mono
–
50
–
dB
Intermodulation Suppression
fm = 8.367kHz
fm = 10.832kHz
Ripple Rejection
RR120
Voltage Controlled Oscillator (VCO)
R Adjust (R5)
Radj
fOSC = 188.808kHz,
R7 = 10kΩ 5%, C6 = 820pF 1%
0
–
8
kΩ
Capture Range
∆f/f
Deviation from fOSCcenter
frequency: Vpilot = 200mVP–P
–
45
–
%
Temperature Coefficient
TC
Uncompensated
–
250 x 10–6
–
K–1
6.7
7.2
7.7
dB
–0.5
0
+0.5
dB
Output Amplifiers
Gain
MUX
GV
External Signal
Input Impedance
Zi
–
50
–
kΩ
Output Impedance
Zo
–
10
–
Ω
External Load Impedance
Z1
10
–
–
kΩ
External Load Capacitance
Z1
–
–
1.5
nF
Mute Suppression
MUX Signal
α
56
60
–
dB
56
60
–
dB
Mute OFF–to–ON
–
10
50
mV
Mute ON–to–OFF
–
10
50
mV
External Signal
DC Offset Voltage at Outputs
∆V
Source Selector (Pin6)
Suppression of MUX Signal
α
V6 ≥ 2V
80
90
–
dB
Suppression of External Signal
α
V6 ≤ 0.8V
56
60
–
dB
Switching Level (MUX Selected)
Voltage
VIL
–
–
0.8
V
–
10
25
µA
Current
IIL
Vi = 0.8V
Note 3. S1 closed; reference: AF output voltage f = 1kHz mono.
AC Characteristics (Cont’d): (VS = 8.5V, TA = +25°C, AC Conditions: (1) Input signal (Vi) of
815mVP–P for L = 1, R = 1 (mono), fm = 1kHz (80% modulation); (2)
MUX input signal (Vi) of 1.2VP–P for L = 1, R = 0 and no dbx, fm = 1kHz
(stereo) and Vpilot = 200VP–P; (3) S1 open, unless specified (without
L – R filter), VCO measured with an external IF roll–off network (–2dB
at 31.5kHz = 2fH) at the input. All the above conditions apply unless
otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max Unit
2
–
VP
V
Source Selector (Cont’d) (Pin6)
Switching Level (External Selected)
Voltage
Current
VIH
IIH
Vi = VP
–
0.1
1.0
µA
VIL
Mute ON
–
–
0.8
V
VIH
Mute OFF
2
–
VP
V
–IIL
Mute ON, VIL = 0.8V
–
10
25
µA
IIL
Mute OFF, VIH = VP
–
0.1
1.0
µA
Muting Circuit (Pin7)
Input Voltage
Input Current
Note 4. Intermodulation suppression (Beat Frequency Components (BFC)):
VO (signal) (at 1kHz)
; fs = (2 x 8.367kHz) –fH
VO (spurious) (at 1kHz)
VO (signal) (at 1kHz)
α3 =
; fs = (3 x 10.823kHz) –2fH
VO (spurious) (at 1kHz)
α2 =
measured with 100% modulated input signal: L = R; pilot signal = 200mVP–P; fm = 8.367 or
10.823kHz.
Pin Connection Diagram
Multiplexer Input 1
20 GND
Pilot Presence Det 2
19 Phase Det
LED Driver Output 3
18 L–R De–Emphasis
VCO 4
17 L–R De–Emphasis
VP 5
Source Selector Input 6
Mute Input 7
Input 2, Left 8
Input 2, Right 9
VO Right 10
16 Smooth Mono/Stereo Control
15 VO Decoder Left De–Emphasis
14 VO Decoder Right De–Emphasis
13 Input 1, Left
12 Input 1, Right
11 VO Left
20
11
.280 (7.12) Max
1
10
.995 (25.3) Max
.300
(7.62)
.280
(7.12)
.100 (2.54)
.125 (3.17) Min
.385 (9.8)