L M 2904N /D
TYPICAL SINGLE-SUPPLY APPLICATION CIRCUIT
Non-Inverting DC Gain (0V output)
+5V
+V IN
*
+
+Vo
L M 2904
1/2 D358
-
R2
Gain=1+R2/R1
R1
10K
1M
=101 as shown
（
）
* R not ne eded due to te mpera ture inde pe ndent I
0
V (mV)
IN
DC Summing Amplifier
Power Amplifier
V
IN'S
≥0V, and Vo≥0V)
（
R1
100K
R
+V1
+V2
V+
910K
+
R2
+Vo
R
L M 2904
R
100K
1/2 D358
+
100K
100K
R3
L M 2904
+Vo
1/2 D358
-
R 100K
-
R
+V3
+V4
91K
+V IN
RL
100K
Vo=0Vfor VIN =0V,Av=10
R
100K
Where Vo=V1+V2+V3+V4
(V1+V2)≥(V3+V4)to Keep Vo>0V
"BI-QUAD" RC Active Bandpass Filter
Fixed Current S ources
R1
+
V
100K
C1
330pF
+
+
2V
-
R1
2K
L M 2904
1/2 D358
+
R2
I2
R3
2K
R2
100K
R5
470K
2V
-
+
-
IN
V
R4
L M 2904
1/2 D358
-
10M
-
C2
R3
100K
L M 2904
1/2 D358
R6
330pF
Vo
+
-
470K
I1
R4
3K
L M 2904
1/2 D358
R7
100K
fo=1kHz
Q=50
+
1mA
V+
R8
100K
C3
10uF
I2=(R1/R2)*I1
Av=100(40dB)
5/8
TGS [ Tiger Electronic Co.,Ltd ]
