Datasheet

LTC1100
1
1100fc
The LTC
®
1100 is a high precision instrumentation amplifier
using zero-drift techniques to achieve outstanding DC
performance. The input DC offset is typically 1µV while
the DC offset drift is typically 5nV/°C; a very low bias
current of 65pA is also achieved.
The LTC1100 is self-contained; that is, it achieves a differ-
ential gain of 100 without any external gain setting resistor
or trim pot. The gain linearity is 20ppm and the gain drift is
4ppm/°C. The LTC1100 operates from a single 5V supply
up to ±8V. The output typically swings 300mV from its
power supply rails with a 10k load.
An optional external capacitor can be added from Pin 7 to
Pin 8 to tailor the device’s 18kHz bandwidth and to
eliminate any unwanted noise pickup.
The LTC1100 is also offered in a 16-pin surface mount
package with selectable gains of 10 or 100.
The LTC1100 is manufactured using Linear Technology’s
enhanced LTCMOS
TM
silicon gate process.
Precision, Zero-Drift
Instrumentation Amplifier
■
Offset Voltage: 10µV Max
■
Offset Voltage Drift: 100nV/°C Max
■
Bias Current: 65pA Max
■
Offset Current: 65pA Max
■
Gain Nonlinearity: 20ppm Max
■
Gain Error: ±0.075% Max
■
CMRR: 90dB
■
0.1Hz to 10Hz Noise: 1.9µV
P-P
■
Single 5V Supply Operation
■
8-Pin MiniDIP
■
Thermocouple Amplifiers
■
Strain Gauge Amplifiers
■
Differential to Single-Ended Converters
Single 5V Supply, DC Instrumentation Amplifier
–V
IN
0.1µF
0.01µF
1
2
3
4
8
7
6
5
V
OUT
V
IN
V
+
= 5V
V
OUT
= 100 [V
IN
– (–V
IN
)]
LTC1100
LTC1100 • TA01
LTCMOS is a trademark of Linear Technology Corporation
FEATURES
DESCRIPTIO
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APPLICATIO S
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TYPICAL APPLICATIO
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, LTC and LT are registered trademarks of Linear Technology Corporation.