INA826

(ACTIVE) Precision, 200-μA Supply Current, 36-V Supply Instrumentation Amplifier

Diagram

Functional Diagram

Description

The INA826 is a low-cost instrumentation amplifier that offers extremely low power consumption and operates over a very wide single or dual supply range. A single external resistor sets any gain from 1 to 1000. The device offers excellent stability over temperature, even at G > 1, as a result of the low gain drift of only 35 ppm/°C (max).

The INA826 is optimized to provide excellent common-mode rejection ratio of over 100 dB (G = 10) over frequencies up to 5 kHz. At G = 1, the common-mode rejection ratio exceeds 84 dB across the full input common-mode range from the negative supply all the way up to 1 V of the positive supply. Using a rail-to-rail output, the INA826 is well-suited for low voltage operation from a 3-V single supply as well as dual supplies up to ±18 V.

Additional circuitry protects the inputs against overvoltage of up to ±40 V beyond the power supplies by limiting the input currents to less than 8 mA.

The INA826 is available in 8-pin SOIC, VSSOP, and tiny 3-mm × 3-mm WSON surface-mount packages. All versions are specified for the –40°C to +125°C temperature range.

Features

  • Input Common-Mode Range: Includes V–
  • Common-Mode Rejection:
    • 104 dB, Min (G = 10)
    • 100 dB, Min at 5 kHz (G = 10)
  • Power-Supply Rejection: 100 dB, Min (G = 1)
  • Low Offset Voltage: 150 µV, Max
  • Gain Drift: 1 ppm/°C (G = 1), 35 ppm/°C (G > 1)
  • Noise: 18 nV/√Hz, G ≥ 100
  • Bandwidth: 1 MHz (G = 1), 60 kHz (G = 100)
  • Inputs Protected Up to ±40 V
  • Rail-to-Rail Output
  • Supply Current: 200 µA
  • Supply Range:
    • Single Supply: 3 V to 36 V
    • Dual Supply: ±1.5 V to ±18 V
  • Specified Temperature Range:
    –40°C to +125°C
  • Packages: 8-Pin VSSOP, SOIC, and WSON

Parametrics

Number of Channels (#) 1    
Vs (Min) (V) 3    
Vs (Max) (V) 36    
CMRR (Min) (dB) 120    
Input offset (+/-) (Max) (uV) 150    
Input offset drift (+/-) (Max) (uV/C) 2    
Input bias current (+/-) (Max) (nA) 65    
Noise at 1kHz (Typ) (nV/rt(Hz)) 18    
Iq (Typ) (mA) 0.2    
Bandwidth at min gain (Typ) (MHz) 1    
Gain (Min) (V/V) 1    
Gain (Max) (V/V) 1000    
Gain error (+/-) (Max) (%) 0.15    
Operating Temperature Range (C) -40 to 125    
Package Group SOIC|8^SON|8^VSSOP|8    
Package Size: mm2:W x L (PKG) 8SOIC: 29 mm2: 6 x 4.9 (SOIC|8)^See datasheet (SON)^8VSSOP: 15 mm2: 4.9 x 3 (VSSOP|8)    
Noise at 0.1 Hz - 10 Hz (Typ) (uVpp) 0.52    
Gain non-linearity (+/-) (Max) (%) 0.0005    

Companion Products

Technical Documents

Datasheet (1)

Application notes (9)

User guides (2)

Selection guides (1)

More literature (1)

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