SM6451BV datasheet(5/12 Pages) NPC

部品番号	SM6451BV

部品情報	Audio Variable Volume IC

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メーカー	NPC [Nippon Precision Circuits Inc]

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SM6451BV

NIPPON PRECISION CIRCUITS—5

AC Analog Characteristics

VDD = 3.0 V, 0.8 Vrms amplitude, 1 kHz input frequency, 100 kΩ output load resistance, Ta = 25 °C,

AC-coupled inputs

Analog inputs (LIN, RIN)

Analog outputs (LOUT, ROUT)

Reference voltage (VRL, VRR)

P arameter

Symbol

Condition

Rating

Unit

min

typ

m a x

Reference input amplitude

VAI

–

0.8

–

Vr m s

Input resistance

R IN

40

50

60

k

Ω

Input clipping voltage

V CLP

THD + N = 1%, ATT = 0 dB

–

1.1

–

Vr m s

P arameter

Symbol

Condition

Rating

Unit

min

typ

m a x

Residual noise voltage

V NS

Input signal: 0 Vr m s ,

A - w eight ﬁlter, 0 dBr = 0.8

Vr m s , ATT = 0 dB

–1 2

2 0

µVrm s

Signal-to-noise ratio

S N R

9 2

9 6

–

dBr

Total harmonic distor tion + noise

THD + N

ATT = 0 dB, 20 kHz

lowpass ﬁlter

–

0.0025

0.005

%

Gain control range

R CNT

– 80

–

0

d B

Step size

Step

0.8

1.0

1.8

d B

Attenuation error (1k to 20kHz)

ERR 1

0 to

−60 dB

– 2

–

1

d B

ERR 2

−61 to −80 dB

– 6

–

0

d B

Absolute attenuation (1 kHz)

AT 0

ATT = 0 dB

–

– 0.0

–

d B

AT 2

ATT =

−20 dB

–

– 20.0

–

d B

AT 4

ATT =

−40 dB

–

– 40.0

–

d B

AT 6

ATT =

−60 dB

–

– 60.4

–

d B

AT 8

ATT =

−80 dB

–

– 84.2

–

d B

Mute attenuation (1 kHz)

Mute

ATT = Mute

– 85.0

– 88.0

–

d B

Channel crosstalk

C T

ATT = 0 dB

– 103

– 105

–

d B

Frequency response

F R

ATT = 0 dB, f = 200 kHz

– 10

– 8

–

d B

Quiescent output zip noise voltage

(while ATT value adjusting)

N J

0 Vr ms input

–

3

m V

Minimum dr iver load resistance

R ML

ATT = 0 dB, THD + N = 1%

–

8

1 2

k

Ω

P arameter

Symbol

Condition

Rating

Unit

min

typ

m a x

Reference voltage output

V REF

0.45VDD

0.5VDD

0.55VDD

V

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