The INA125 is a low power, high accuracy instrumentation amplifier with a precision voltage reference. It provides complete bridge excitation and precision differential-input amplification on a single integrated circuit.
A single external resistor sets any gain from 4 to 10,000. The INA125 is laser-trimmed for low offset voltage (250µV), low offset drift (2µV/°C), and high common-mode rejection (100dB at G = 100). It operates on single (+2.7V to +36V) or dual (±1.35V to ±18V) supplies.
The voltage reference is externally adjustable with pin-selectable voltages of 2.5V, 5V, or 10V, allowing use with a variety of transducers. The reference voltage is accurate to ±0.5% (max) with ±35ppm/°C drift (max). Sleep mode allows shutdown and duty cycle operation to save power.
The INA125 is available in 16-pin plastic DIP and SO-16 surface-mount packages and is specified for the -40°C to +85°C industrial temperature range.
|Number of channels (#)|
|Vs (Min) (V)|
|Vs (Max) (V)|
|CMRR (Min) (dB)|
|Input offset (+/-) (Max) (uV)|
|Input offset drift (+/-) (Max) (uV/C)|
|Input bias current (+/-) (Max) (nA)|
|Noise at 1 kHz (Typ) (nV/rt (Hz))|
|Iq (Typ) (mA)|
|Bandwidth at min gain (Typ) (MHz)|
|Gain (Min) (V/V)|
|Gain (Max) (V/V)|
|Gain error (+/-) (Max) (%)|
|Operating temperature range (C)|
|Package size: mm2:W x L (PKG)|
|Noise at 0.1 Hz-10 Hz (Typ) (uVpp)|
|Gain non-linearity (+/-) (Max) (%)|
|-40 to 85|
PDIP | 16
SOIC | 16
See datasheet (PDIP)
16SOIC: 59 mm2: 6 x 9.9 (SOIC | 16)