APPLICATIO S I FOR ATIO
VIN2
R3 = R1
C
R1
VIN1
R2
LT1567
2
–
16
600Ω
600Ω
VREF
0.1µF
3
5
+
–
7pF
150Ω
V+
8 0.1µF
+
V–
4
VOUT
7
1567 F05
V+
( ) WITH R3 AND R1 EQUAL, VOUT = VREF +
R2
R1
(VIN2 – VIN1)
( ) GAIN FROM (VIN2 – VIN1) TO VOUT IS
R2
R1
f–3dB
=
2π
•
1
R2
•
C
IF R1 = R3 = 604Ω, THEN
R2
604Ω
1.21k
2.43k
GAIN
1
2
4
Vη, INPUT REFERRED
NOISE (nV/√Hz)
9.0
8.4
8.1
NOISE AT VOUT = GAIN • Vη • √fηBW; fηBW = 1.57 • f–3dB
Figure 5. A Differential to Single Ended Amplifier/Filter
LT1567
1567fa
13