INA118 Precision, Low Power Instrumentation Amplifier | TI.com

INA118 (ACTIVE)

Precision, Low Power Instrumentation Amplifier

 

Recommended alternative parts

  • INA128  - The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.   Lower broadband noise (8 nV/rtHz) and wider bandwidth (1.3 MHz)
  • INA188  - The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.   Improved CMRR (118 dB) with reduced bias current (2.5 nA Max)

Description

The INA118 is a low-power, general-purpose instrumentation amplifier offering excellent accuracy. The device’s versatile, 3-op amp design and small size make it ideal for a wide range of applications. Current-feedback input circuitry provides wide bandwidth, even at high gain (70 kHz at G = 100).

A single external resistor sets any gain from 1 to 10000. Internal input protection can withstand up to ±40 V without damage.

The INA118 is laser-trimmed for low offset voltage (50 µV), drift (0.5 µV/°C), and high common-mode rejection (110 dB at G = 1000). The INA118 operates with power supplies as low as ±1.35 V, and quiescent current is only 350 µA, making the device ideal for battery-operated systems.

The INA118 is available in 8-pin plastic DIP and SO-8 surface-mount packages, specified for the –40°C to +85°C temperature range.

Features

  • Low Offset Voltage: 50-µV Maximum
  • Low Drift: 0.5-µV/°C Maximum
  • Low Input Bias Current: 5-nA Maximum
  • High CMR: 110-dB Minimum
  • Inputs Protected to ±40 V
  • Wide Supply Range: ±1.35 to ±18 V
  • Low Quiescent Current: 350-µA
  • 8-Pin Plastic DIP, SO-8

Parametrics

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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) (%)
INA118 Order now 1     2.7     36     107     50     0.5     5     10     0.35     0.8     1     10000     1     -40 to 85     PDIP | 8
SOIC | 8    
See datasheet (PDIP)
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)    
0.28     0.002    
INA819 Samples not available 1     4.5     36     140     35     0.4     0.5     8     0.35     2     1     1000     0.15     -40 to 125     SOIC | 8     8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)     0.19     0.001    
INA828 Order now 1     4.5     36     140     50     0.5     0.6     7     0.6     2     1     1000     0.15     -40 to 125     SOIC | 8     8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)     0.14     0.001