LT1101SW
High Precision, Micropower, Single Supply Instrumentation Amplifier (Fixed Gain = 10 or 100)
peculiarity
- Gain error: 0.04% maximum
- Gain nonlinearity: 0.0008% (8ppm drift) maximum
- GAIN DRIFT: 4PPM/°C (Max)
- Supply current: 105μA maximum
- Offset voltage: 160μV maximum
- Offset voltage drift: 0.4μV/°C typical
- Offset current: 600pA maximum
- Common-mode rejection ratio (CMRR), G = 100:100 dB sensitivity
- 0.1Hz to 10Hz noise: 0.9μVp-P: 2.3pAp-P typical
- Gain-bandwidth product: 250kHz sensitivity
- Single or dual power supply
- Surface mount package
description
™The LT 1101 establishes the following milestones: (1) it is the first micropower instrumentation amplifier, (2) it is the first single-supply instrumentation amplifier, and (3) it is the first instrumentation amplifier to feature 10 and/or fixed income 100 in a low-cost, space-saving 8-pin package.
The LT1101 is completely self-contained: there is no external gain-setting resistor. The LT1101 incorporates again erroneous 0.008% micropower operation (75μA supply current), 3ppm linear gain, gain drift of 1PPM/°C. The output is guaranteed to have excellent gain accuracy for a 2K load to 10V driver.
Other precision specifications also stand out: 50μV input offset voltage, 130pA input bias current, and low drift (0.4μV/°C and 0.7pA/°C). In addition, unlike other instrumentation amplifiers, there is no contribution to the total error of the output offset voltage.
A complete specification with ± 15V dual-supply operation and 5V single-supply operation. The LT1101 can be operated from a single lithium battery or two nickel-cadmium batteries. The battery voltage is as low as 1.8V drop, but the LT1101 still maintains its gain accuracy. In a single-supply application, the input and output voltages swing a few millivolts to ground. Swinging, power dissipation pull-down, requires a resistor groundno external output to draw current.