SM6451A Datasheet, PDF (9/13 Pages) Nippon Precision Circuits Inc – Audio Variable Volume IC

SM6451A
ANALOG PERFORMANCE CHARACTERISTICS
DVDD = AVDD = 5.0V, 100kΩ output load resistance, Ta = 25°C
1
f = 1kHz
ATT = 0dB
20kHz LPF
0.1
0.01
0.001
0.1
1
2
VIN [Vrms]
Figure 3. THD + N vs. input amplitude
0.1
ATT = 0dB
20kHz LPF
0.01 ^{VIN = 0.2Vrms}
VIN = 0.4Vrms
VIN = 0.8Vrms
VIN = 1.2Vrms
0.001
20
100
1k
Freq [Hz]
10k 20k
Figure 4. THD + N vs. input frequency
2
1
VIN = 1.2Vrms
f = 1kHz
0
−1
−2
−3
−4
−5
0 −10 −20 −30 −40 −50 −60 −70 −80
ATT [dB]
20
16
VIN = 0Vrms
A-Weight Filter
12
8
4
0
0 −10 −20 −30 −40 −50 −60 −70 −80
ATT [dB]
Figure 5. Attenuation error
Figure 6. Residual noise vs. ATT
ATT = 0dB
+0
−20 ^{ATT = −20dB}
−40 ^{ATT = −40dB}
−60 ^{ATT = −60dB}
−80 ^{ATT = −80dB}
ATT = MUTE
−100
20
100
VIN = 1.2Vrms
1k
10k
100k
Freq [Hz]
Figure 7. Frequency response
−40
−60
−80
−100
−120
−140
20
100
VIN = 1.2Vrms
ATT = 0dB
1k
10k
100k
Freq [Hz]
Figure 8. Crosstalk frequency response
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