Datasheet

11
LTC1609
1609fa
Figure 3b. Offset/Gain Circuits for Bipolar Input Ranges
Table 1b. Analog Input Range Connections for Figure 3b
ANALOG INPUT CONNECT R1
IN
CONNECT R2
IN
CONNECT R3
IN
INPUT
RANGE VIA 200Ω TO VIA 100Ω TO TO IMPEDANCE
±10V V
IN
AGND CAP 22.9kΩ
±5V AGND V
IN
CAP 13.3kΩ
±3.3V V
IN
V
IN
CAP 10.7kΩ
APPLICATIO S I FOR ATIO
WUUU
+
+
2.2µF
2.2µF
33.2k
100Ω
200Ω
V
IN
+
R1
IN
AGND1
R2
IN
R3
IN
CAP
REF
AGND2
2.2µF
+
2.2µF
50k
33.2k
100Ω
576k
200Ω
5V
50k
OFFSET
TRIM
OFFSET
TRIM
GAIN
TRIM
GAIN
TRIM
OFFSET
TRIM
GAIN
TRIM
5V
LTC1609
R1
IN
AGND1
R2
IN
R3
IN
CAP
REF
AGND2
LTC1609
±10V
±5V
±3.3V
WITHOUT TRIMINPUT RANGE
WITH TRIM
(ADJUST OFFSET FIRST AT 0V, THEN ADJUST GAIN)
V
IN
+
+
2.2µF
2.2µF
33.2k
200Ω
100Ω
V
IN
+
R1
IN
AGND1
R2
IN
R3
IN
CAP
REF
AGND2
2.2µF
+
2.2µF
50k
33.2k
200Ω
100Ω
576k
5V
50k
5V
LTC1609
R1
IN
AGND1
R2
IN
R3
IN
CAP
REF
AGND2
LTC1609
V
IN
+
+
2.2µF
2.2µF
33.2k
100Ω
200Ω
V
IN
+
R1
IN
AGND1
R2
IN
R3
IN
CAP
REF
AGND2
2.2µF
1609 F03b
+
2.2µF
50k
33.2k
100Ω
200Ω
576k
5V
50k
5V
LTC1609
R1
IN
AGND1
R2
IN
R3
IN
CAP
REF
AGND2
LTC1609
V
IN