INA188:36-V, Zero-Drift, Rail-to-Rail-Out Instrumentation Amplifier

The INA188 is a precision instrumentation amplifier that uses TI proprietary auto-zeroing techniques to achieve low offset voltage, near-zero offset and gain drift, excellent linearity, and exceptionally low-noise density (12 nV/√Hz) that extends down to dc.
The INA188 is optimized to provide excellent common-mode rejection of greater than 104 dB (G ≥ 10). Superior common-mode and supply rejection supports high-resolution, precise measurement applications. The versatile three op-amp design offers a rail-to-rail output, low-voltage operation from a 4-V single supply as well as dual supplies up to ±18 V, and a wide, high-impedance input range. These specifications make this device ideal for universal signal measurement and sensor conditioning (such as temperature or bridge applications).
A single external resistor sets any gain from 1 to 1000. The INA188 is designed to use an industry-standard gain equation: G = 1 + (50 kΩ / RG). The reference pin can be used for level-shifting in single-supply operation or for an offset calibration.
The INA188 is specified over the temperature range of –40°C to +125°C .
Features
- Excellent DC Performance:
- Low Input Offset Voltage: 55 ?V (max)
- Low Input Offset Drift: 0.2 ?V/°C (max)
- High CMRR: 104 dB, G ≥ 10 (min)
- Low Input Offset Voltage: 55 ?V (max)
- Low Input Offset Drift: 0.2 ?V/°C (max)
- High CMRR: 104 dB, G ≥ 10 (min)
- Low Input Noise:
- 12 nV/√Hz at 1 kHz
- 0.25 ?VPP (0.1 Hz to 10 Hz)
- 12 nV/√Hz at 1 kHz
- 0.25 ?VPP (0.1 Hz to 10 Hz)
- Wide Supply Range:
- Single Supply: 4 V to 36 V
- Dual Supply: ±2 V to ±18 V
- Single Supply: 4 V to 36 V
- Dual Supply: ±2 V to ±18 V
- Gain Set with a Single External Resistor:
- Gain Equation: G = 1 + (50 kΩ / RG)
- Gain Error: 0.007%, G = 1
- Gain Drift: 5 ppm/°C (max) G = 1
- Gain Equation: G = 1 + (50 kΩ / RG)
- Gain Error: 0.007%, G = 1
- Gain Drift: 5 ppm/°C (max) G = 1
- Input Voltage: (V–) + 0.1 V to (V+) – 1.5 V
- RFI-Filtered Inputs
- Rail-to-Rail Output
- Low Quiescent Current: 1.4 mA
- Operating Temperature: –55°C to +150°C
- SOIC-8 and DFN-8 Packages
Parametrics
key | INA188 |
---|
Number of Channels
(#) | 1 |
Vs
(Min)
(V) | 4 |
Vs
(Max)
(V) | 36 |
CMRR
(Min)
(dB) | 118 |
Input Offset (+/-)
(Max)
(uV) | 55 |
Input Offset Drift (+/-)
(Max)
(uV/C) | 0.2 |
Input Bias Current (+/-)
(Max)
(nA) | 2.5 |
Noise at 1kHz
(Typ)
(nV/rt(Hz)) | 12.5 |
Iq
(Typ)
(mA) | 1.4 |
Bandwidth at Min Gain
(Typ)
(MHz) | 0.6 |
Gain
(Min)
(V/V) | 1 |
Gain
(Max)
(V/V) | 1000 |
Gain Error (+/-)
(Max)
(%) | 0.5 |
Rating | Catalog |
Operating Temperature Range
(C) | -40 to 125 |
Package Group | SOIC SON |
Approx. Price (US$) | 1.85 | 1ku |
Package Size: mm2:W x L (PKG) | See datasheet (SON) |
Noise at 0.1 Hz - 10 Hz
(Typ)
(uVpp) | 0.25 |
Datasheet?(1)
Application notes?(1)
User guides?(3)
Models?(3)
Design kits & evaluation modules?(1)
Software?(1)
Development tools?(2)
Ordering Information
Part # | Preproduction / Production Material | Status | Temp(oC) | Price | QTY | Package | Pins | Device Marking | Package QTY | Carrier |
---|
INA188ID | Production | ACTIVE | -40 to 125 | 2.22 | 1ku | SOIC?(D) | INA188 | 75 | TUBE |
INA188IDR | Production | ACTIVE | -40 to 125 | 1.85 | 1ku | SOIC?(D) | INA188 | 2500 | LARGE T&R |
INA188IDRJR | Production | PREVIEW | -40 to 125 | Contact BDTIC | SON?(DRJ) | INA188 | 1000 |