參數(shù)資料
型號(hào)： UPC1876GT
廠商： NEC Corp.
英文描述： US MTS DECODER
中文描述： 美國的多邊貿(mào)易體制解碼器
文件頁數(shù)： 27/40頁
文件大小： 309K
代理商： UPC1876GT
μ
PC1876
27
Data Sheet S11666EJ4V0DS00
Electrical Characteristics Measurement List (T
A
= +25C, RH
≤
70%, V
CC
= 9.0 V)
(1/6)
Measurement
Current flowing to V
CC
pin (no signal).
Input signal (f = 15.734 kHz) to COM pin. Raise input voltage gradually until stereo LED
turns ON. Then measure input voltage of COM pin.
Input signal (f = 15.734 kHz) to COM pin for stereo LED to be ON. Lower input voltage
gradually until stereo LED turns OFF. Then assume input voltage “V”.
ST
= 20 log ST
SENSE
V
Input signal (f = 14.5 kHz, V
in
= 0.0848 V
p-p
[30 mV
r.m.s.
]) to COM pin. Raise input
frequency gradually until stereo LED turns ON. Then assume input frequency “f
in1
”.
CC = 15.734 [kHz] – f
in1
15.734 [kHz]
Next, input signal (f = 17.0 kHz, V
in
= 0.0848 V
p-p
[30 mV
r.m.s.
]) to COM pin. Lower input
frequency gradually until stereo LED turns ON. Then assume input frequency “f
in2
”.
CC = f
in2
– 15.734 [kHz]
15.734 [kHz]
Input signal (f = 78.67 kHz, no modulation) to COM pin. Raise input voltage gradually
until SAP LED turns ON. Then measure input volage of COM pin.
Input signal (f = 78.67 kHz, no modulation) to COM pin for SAP LED to be ON.
Lower input voltage gradually until SAP LED turns OFF. Then assume input voltage “V”.
SAP
= 20 log SAP
SENSE
V
Apply 6.0 V to SDT pin. Input signal (f = 160 kHz, V
in
= 10 mV
r.m.s.
) to COM pin. Raise
frequency and measure the DC voltage of NDT pin. At maximum voltage, raise input
voltage gradually until SAP LED turns OFF. Then measure input voltage of COM pin.
Apply 6.0 V to SDT pin. Input signal (f = 160 kHz, V
in
= 90 mV
r.m.s.
) to COM pin. Raise
frequency and measure the DC voltage of NDT pin. At maximum voltage, lower input
voltage gradually until SAP LED turns ON. Then assume input voltage of COM pin “V”.
NO
= 20 log NO
SENSE
V
Set MUTE and FMONO pins to “L”.
Input monaural signal (100% modulation, f = 300 Hz) to COM pin. Measure output
voltage of ROT pin.
Execute the same operation for LOT pin.
Set ST/SAP and FMONO pins to “H” and MUTE pin to “L”.
Input L-only signal (100% modulation, f = 300 Hz) to COM pin. Measure output voltage
of LOT pin.
Execute the same operation for ROT pin (R-only signal).
Set FMONO pin to “H” and SAP1/2, ST/SAP, MUTE pins to “L”.
Input SAP signal (100% modulation, f = 300 Hz) to COM pin. Measure output voltage of
ROT pin.
Execute the same operation for LOT pin.
Set FMONO pin to “H” and SAP1/2, ST/SAP, MUTE pins to “L”.
Input SAP signal (100% modulation, f = 300 Hz) to COM pin. Measure output voltage of
SOT pin.
(Noise reduction : OFF)
Parameter
Supply current
Stereo detection
input sensitivity
Stereo detection
hysteresis
Stereo detection
capture range
SAP detection
input sensitivity
SAP detection
hysteresis
Noise detection
input sesitivity
Noise detection
hysteresis
Monaural total
output voltage
Stereo total output
voltage
SAP total output
voltage
SAP single output
voltage
Symbol
I
CC
ST
SENSE
ST
HY
CC
SAP
SENSE
SAP
HY
NO
SENSE
NO
HY
V
OMO
V
OST
V
OSAP1
V
OSAP2
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