SM6451B Datasheet, PDF (9/12 Pages) Nippon Precision Circuits Inc – Audio Variable Volume IC

SM6451B
ANALOG PERFORMANCE CHARACTERISTICS
DVDD = AVDD = 3.0 V, 100 kΩ output load resistance, Ta = 25 °C
1
0.1
0.01
f=1kHz
ATT=0dB
20kHz LPF
VDD=3.3V
VDD=3.0V
VDD=2.7V
0.001
.1
.2
.5
VIN(Vrms)
1 1.2
Figure 3. THD + N vs. input amplitude
0.1
ATT=0dB
20kHz LPF
0.01
VIN=0.2Vrms
VIN=0.5Vrms
0.001
20
VIN=0.8Vrms
100
1k
Frequency(Hz)
10k 20k
Figure 4. THD + N vs. input frequency
2
1
VIN=0.8Vrms
f=1kHz
0
-1
-2
-3
-4
-5
0 -10 -20 -30 -40 -50 -60 -70 -80
ATT(dB)
-64
-68
-72
-76
-80
-84
-88
-92
-64
Ideal Gain
VDD=3V
VDD=2.7V
VDD=2.5V
-68
-72
-76
-80 Mute
ATT(dB)
Figure 5. Attenuation error
Figure 6. Attenuation characteristic (– 64dB to MUTE)
20
VIN=0Vrms
A-Weight Filter
16
12
8
4
0
0 -10 -20 -30 -40 -50 -60 -70 -80
ATT(dB)
Figure 7. Residual noise vs. ATT
+10
+0
ATT=0dB
-10
-20
ATT=-20dB
-30
-40
ATT=-40dB
-50
-60
ATT=-60dB
-70
-80
ATT=-80dB
-90
ATT=MUTE
-100
20
100
VIN=0.8Vrms
1k
10k
Frequency(Hz)
100k 200k
Figure 8. Frequency response
NIPPON PRECISION CIRCUITS INC.—9