NTE NTE1657 Datasheet
NTE1657
Integrated Circuit
Phase Lock Loop (PLL) FM Stereo Multiplex
Description:
The NTE1657 is a PLL FM stereo multiplex integrated circuit in a 9–Lead SIP type package suitable
for automotive applications and portable radio applications because of space merit by the package
and wide supply voltage range.
Features:
D Excellent Pilot Lamp Sensitivity: V
D Suitable for LED Driving: I
= 20mA (Max)
LAMP
D Recommended Input Voltage Range: V
D Operating Supply Voltage Range: VCC = 3.5 to 12V
D Excellent Channel Separation Through Entire Audio Frequency Range: Sep = 45dB (Typ)
D Low Distortion: THD = 0.08% (Typ) @ V
D VCO Stop Capability (The VCO is stopped when the pin 7 is connected with the power supply
line and then the stereo indicator is turn off).
D Easy Adjustment (The monitored free running frequency of VCO is 38kHz @ Pin6).
L(ON)
= 9mV
= 200 to 500mV
IN
= 200mV
IN
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(Typ)
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(Stereo)
Absolute Maximum Ratings
Supply Voltage, V
Lamp Voltage, V
Lamp Current, I
12V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CC
16V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LAMP
LAMP
: (TA = +25°C unless otherwise specified)
Continuous 20mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Peak 40mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Dissipation, P
500mW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
D
Derate Above 25°C 4mW/°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Temperature Range, T
Storage Temperature Range, T
stg
–30° to +75°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
opr
–55° to +150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DC Characteristics: (VCC = 8V, Pin Voltage at No Signal, unless otherwise specified)
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Parameter Symbol Test Conditions Min Typ Max Unit
Input (Pin1) V
LP Filter 1 (Pin2) V
VCC (Pin3) V
VCO (Pin4) V
GND (Pin5) V
Stereo Lamp (Pin6) V
LP Filter 2 V
Left Channel Output (Pin8) V
Right Channel Output (Pin9) V
1
2
3
4
5
6
7
8
9
– 3.5 – V
– 6.6 – V
– 8.0 – V
– 7.1 – V
– 0 – V
– – – V
– 7.4 – V
– 4.0 – V
– 4.0 – V
AC Electrical Characteristics: (TA = +25°C, VCC = 8V, f = 1kHz, unless otherwise specified)
Characteristic Symbol Test Condition Min Typ Max Unit
Supply Current I
CC
Input Resistance R
Max Composite Signal Input Voltage VIN Max
Stereo
Separation Sep L – R = 180mV
Total Harmonic Distortion
Monaural
THD VIN = 200mV
Stereo L + R = 180mV
Voltage Gain G
Channel Balance CB VIN = 200mV
Lamp Sensitivity
ON
OFF
V
L(ON)
V
L(OFF)
Stereo Lamp Hysteresis V
Capture Range CR P = 20mV
Carrier Leak
9kHz
CL L + R = 180mV
38kHz
at Lamp Off – 11 18 mA
IN
– 33 – kΩ
L + R = 90%, P = 10% – 550 – mV
V
VIN = 200mV
Pilot Input
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, P = 20mV
, P = 20mV
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36 45 – dB
– 0.08 0.3 %
– 0.08 – %
–2.0 0.5 +2.0 dB
– 0 1.5 dB
– 10 15 mV
2 6 – mV
To Turn Off From Lamp Turn On – 3 – mV
H
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, P = 20mV
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– ±3 – %
– 34 – dB
– 42 – dB
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SCA Rejection Ratio SCA Rej L + R = 160mV
SCA = 20mV
Signal–to–Noise Ratio S/N VIN = 180mV
Output Current (Pin8, Pin9) I
OUT
RL = 3.3kΩ VCC = 3.5V – 0.3 0.6 mA
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, P = 20mV
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, f
SCA
= 67kHz
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– 70 – dB
, f = 1kHz, Rg = 620Ω – 74 – dB
VCC = 8V – 1.2 1.8 mA
VCC = 12V – 1.4 2.1 mA
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