Rainbow Electronics BA3131FS - Manual (Page 6)

BA3131FS
Standard ICs
+
–
Vref Vref
Vcc
100k Ω
0.47 µ F
3.3 µ F
1k
47 µ F
2.2k Ω 56k Ω
100k Ω
B.P.F
20Hz ~ 30kHz
Von
Vn =
Von
1 ч
100 Ч 10
1 Ч 10 3
3
Fig. 8 Input conversion noise voltage
–
+
C
–
+
B
–
+
A
Vref
Vref
Vref
Vref
Channel selection
100k Ω
100k Ω
100k Ω
1k Ω / 100k Ω
1k Ω / 100k Ω
1k Ω / 100k Ω
1k Ω
1k Ω
1k Ω
V IN
f = 1kHz
CT ABC = 20log
VoC
VoA or VoB
Vcc = 8V
Vo
Fig. 9 Crosstalk between A and B
~
Vref
Vref
100k Ω
1k Ω
V IN
f = 1kHz
–
+
Distortion meter
Vo = 1Vrms
Vo
0.47 µ F
Vcc
2.2k Ω
56k Ω
3.3 µ F
Fig. 10 Total harmonic distortion
~
Vref Vref
100k Ω
1k / 100k Ω 1k Ω
–
+
Vo1
CH-1
Fig. 11 Channel separation ( )
Vref Vref
100k Ω
1k / 100k Ω
1k Ω
f = 1kHz
–
+
Vo2
CH-2
Vcc = 8V
CS = 20log
Vo1
100Vo2
Fig. 12 Channel separation ( )
~