LT1101
W U U
U
APPLICATIO S I FOR ATIO
Differential Voltage Amplification from a Resistance Bridge
+
V
R
R
TRANSDUCER
OR SENSOR
6
3
5
RESISTANCE
BRIDGE
+
–
8
LT1101
G = 100
OUT
R
R
4
1
SHIELD
MINIMUM VOLTAGE ACROSS BRIDGE = 20mV
MINIMUM SUPPLY VOLTAGE = 1.8V
LT1101 • AI07
Gain = 20, 110 or 200 Instrumentation Amplifier
Single Ended Output
Differential Output
6
+
6
8
LT1101
3
+
+
IN
–
8
LT1101
OUT
–
1
3
–
1
+
OUT
–
+
IN
–
6
3
+
–
6
8
LT1101
1
+
8
LT1101
3
–
1
GAIN = 200, AS SHOWN
GAIN = 20, SHORT PIN 1 TO PIN 2, PIN 7 TO PIN 8
ON BOTH DEVICES
GAIN = 110, SHORT PIN 1 TO PIN 2, PIN 7 TO PIN 8
ON ONE DEVICE, NOT ON THE OTHER
INPUT REFERRED NOISE IS REDUCED BY √2 (G = 200 OR 20)
LT1101 • AI08
1101fa
14