SM6451B Datasheet, PDF (5/12 Pages) Nippon Precision Circuits Inc – Audio Variable Volume IC

SM6451B
AC Analog Characteristics
V_DD = 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)
Parameter
Reference input amplitude
Input resistance
Input clipping voltage
Symbol
Condition
Rating
Unit
min
typ
max
V_AI
–
0.8
–
Vrms
R _IN
40
50
60
kΩ
V _CLP
THD + N = 1%, ATT = 0 dB
–
1.1
–
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 (1 kHz)
Mute attenuation (1 kHz)
Channel crosstalk
Frequency response
Quiescent output zip noise voltage
(while ATT value adjusting)
Minimum driver load resistance
Symbol
V _NS
SNR
THD + N
R _CNT
Step
ERR₁
ERR₂
AT ₀
AT ₂
AT ₄
AT ₆
AT ₈
Mute
CT
FR
N_J
R _ML
Condition
Input signal: 0 Vrms,
A-weight filter, 0 dBr = 0.8
Vrms, ATT = 0 dB
ATT = 0 dB, 20 kHz
lowpass filter
0 to −60 dB
−61 to −80 dB
ATT = 0 dB
ATT = −20 dB
ATT = −40 dB
ATT = −60 dB
ATT = −80 dB
ATT = Mute
ATT = 0 dB
ATT = 0 dB, f = 200 kHz
0 Vrms input
ATT = 0 dB, THD + N = 1%
min
–
92
–
– 80
0.8
–2
–6
–
–
–
–
–
– 85.0
– 103
– 10
–
–
Rating
typ
12
96
0.0025
–
1.0
–
–
– 0.0
– 20.0
– 40.0
– 60.4
– 84.2
– 88.0
– 105
–8
–
8
max
20
–
0.005
0
1.8
1
0
–
–
–
–
–
–
–
–
3
12
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
NIPPON PRECISION CIRCUITS INC.—5