0
ACTIVE
Number of channels |
1 |
Vs (max) (V) |
36 |
Vs (min) (V) |
4.5 |
Input offset (±) (max) (µV) |
50 |
Voltage gain (min) (V/V) |
1 |
Voltage gain (max) (V/V) |
10000 |
Noise at 1 kHz (typ) (nV√Hz) |
8 |
Features |
Current Feedback, Overvoltage protection |
CMRR (min) (dB) |
120 |
Input offset drift (±) (max) (µV/°C) |
0.5 |
Input bias current (±) (max) (nA) |
5 |
Iq (typ) (mA) |
0.7 |
Bandwidth at min gain (typ) (MHz) |
1.3 |
Gain error (±) (max) (%) |
0.5 |
Operating temperature range (°C) |
-40 to 125 |
Rating |
Catalog |
Type |
Resistor |
Gain nonlinearity (±) (max) (%) |
0.004 |
Output swing headroom (to negative supply) (typ) (V) |
0.8 |
Output swing headroom (to positive supply) (typ) (V) |
-0.9 |
Input common mode headroom (to negative supply) (typ) (V) |
1.7 |
Input common mode headroom (to positive supply) (typ) (V) |
-1.4 |
Noise at 0.1 Hz to 10 Hz (typ) (µVPP) |
0.2 |
PDIP (P)-8-92.5083 mm² 9.81 x 9.43
The INA128 and INA129 (INA12x) are low-power, general-purpose instrumentation amplifiers that offer excellent accuracy. The versatile three op amp design and small size make these amplifiers an excellent choice for a wide range of applications. Current-feedback input circuitry provides wide bandwidth even at high gain (200kHz at G = 100).
A single external resistor sets any gain from 1 to 10,000. The INA128 provides an industry-standard gain equation with a 50kΩ resistor. The INA129 gain equation uses a 49.4kΩ resistor to allow for drop-in replacements of comparable devices.
The INA12x are available in plastic DIP and 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 (0.6nA, maximum) and lower noise (7nV/√Hz) at the same quiescent current. See the Device Comparison Table for a selection of precision instrumentation amplifiers from Texas Instruments.
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