UPC1876 datasheet(32/40 Pages) NEC

32 / 40 page

µPC1876

Data Sheet S11666EJ4V0DS00

(6/6)

Parameter

Monaural total

S/N

Stereo total S/N

SAP total S/N

Reference voltage

DC saturation

voltage

Symbol

S/NMO

S/NST

S/NSAP

Vref

VOSAT2

Measurement

Set MUTE and FMONO pins to “L”.

Input no signal to COM pin, and assume output voltage of ROT pin “VNMO”.

Input monaural signal (100% modulation, f = 300 Hz) to COM pin, and assume output

voltage of ROT pin “VSMO”.

S/NMO = 20 log

VSMO

VNMO

Execute the same operation for LOT pin.

Set ST/SAP, FMONO pins to “H” and MUTE pin to “L”.

Input pilot signal to COM pin, and assume output voltage of ROT pin “VNST”.

Input stereo signal (100% modulation, f = 300 Hz) to COM pin, and assume output

voltage of ROT pin “VSST”.

S/NST = 20 log

VSST

VNST

Execute the same operation for LOT pin.

Set FMONO pin to “H” and SAP1/2, ST/SAP pins to “L”.

Input 5fH signal to COM pin, and assume output voltage of ROT pin “VNSAP”.

Input SAP signal (100% modulation, f = 300 Hz) to COM pin, and assume output voltage

of ROT pin “VSSAP”.

S/NSAP = 20 log

VSSAP

VNSAP

Execute the same operation for LOT pin.

Measure DC voltage of 1.5 V pin.

Apply flowing current (1 mA) to DCO pin and measure DC voltage of DCO pin.

UPC1876 Datasheet(PDF) 32 Page - NEC

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