The INA128 and INA129 are low-power, general purpose instrumentation amplifiers offering excellent accuracy. The versatile 3-op amp design and small size make these amplifiers ideal for a wide range of applications. Current-feedback input circuitry provides wide bandwidth even at high gain (200 kHz at G = 100).
A single external resistor sets any gain from 1 to 10,000. The INA128 provides an industry-standard gain equation; the INA129 gain equation is compatible with the AD620.
The INA12x is available in 8-pin plastic DIP and SO-8 surface-mount packages, specified for the –40°C to +85°C temperature range. The INA128 is also available in a dual configuration, the INA2128.
The upgraded INA828 offers a lower input bias current (0.6 nA maximum) and lower noise (7 nV/√Hz) at the same quiescent current. See the Device Comparsion Table for a selection of precision instrumentation amplifiers from Texas Instruments.
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|Part number||Order||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 Group||Package size: mm2:W x L (PKG)||Noise at 0.1 Hz-10 Hz (Typ) (uVpp)||Gain non-linearity (+/-) (Max) (%)|
||1||4.5||36||120||50||0.5||5||8||0.7||1.3||1||10000||2||-40 to 125||
PDIP | 8
SOIC | 8
8PDIP: 93 mm2: 9.43 x 9.81 (PDIP | 8)
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)