SM6451A Datasheet, PDF (5/13 Pages) Nippon Precision Circuits Inc – Audio Variable Volume IC

SM6451A
AC Analog Characteristics
V_DD = 5.0V, 1.2Vrms amplitude, 1kHz input frequency, 100kΩ output load resistance, Ta = 25°C,
AC-coupled inputs
Analog inputs (LIN, RIN)
Parameter
Input reference amplitude
Input resistance
Input clipping voltage
Symbol
Condition
Rating
Unit
min
typ
max
V_AI
–
1.2
–
Vrms
R _IN
40
50
60
kΩ
V _CLP
THD + N = 1%, ATT = 0dB
–
1.75
–
Vrms
Analog outputs (LOUT, ROUT)
Parameter
Residual noise voltage
Signal-to-noise ratio
Total harmonic distortion + noise
Gain control range
Step size
Attenuation error (1k to 20kHz)
Absolute attenuation (1kHz)
Mute attenuation (1kHz)
Channel crosstalk
Frequency response
Quiescent output zip noise voltage
(while ATT value adjusting)
Minimum driver load resistance
Symbol
Condition
min
V _NS
Input signal: 0Vrms,
–
A-weight filter, 0dBr =
SNR
1.2Vrms, ATT = 0dB
95
THD + N
ATT = 0dB, 20kHz lowpass
filter
–
R _CNT
−80
Step
0.8
ERR₁
0 to −60dB
−2
ERR₂
−61 to −80dB
−5
AT ₀
ATT = 0dB
–
AT ₂
ATT = −20dB
–
AT ₄
ATT = −40dB
–
AT ₆
ATT = −60dB
–
AT ₈
ATT = −80dB
–
Mute
ATT = Mute
−88
CT
ATT = 0dB
−105
FR
ATT = 0dB, f = 200kHz
–
N_J
0Vrms input
–
R _ML
ATT = 0dB, THD + N = 1%
–
Rating
typ
10
100
0.0017
–
1
–
–
−0.1
−20.1
−40.3
−60.5
−83.0
−92
−112
−5
–
6
max
20
–
0.0025
0
1.5
1
0
–
–
–
–
–
–
–
–
3
10
Unit
µVrms
dBr
%
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
mV
kΩ
Reference voltage (VRL, VRR)
Parameter
Reference voltage output
Symbol
V _REF
Condition
Rating
Unit
min
typ
max
0.45V_DD
0.5V_DD
0.55V_DD
V
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