Overview
The INA819IDRGR is a high-precision instrumentation amplifier produced by Texas Instruments. This device is designed to offer low power consumption and operates over a wide range of single-supply or dual-supply voltages. It features exceptionally low input offset voltage, offset voltage drift, and input bias current, making it ideal for applications requiring high precision and low noise. The INA819IDRGR is available in an 8-pin WSON package and is specified over a temperature range of –40°C to +125°C.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Offset Voltage (VOSI) | 10 | - | 35 | µV |
| Gain Drift | - | - | 5 ppm/°C (G = 1), 35 ppm/°C (G > 1) | - |
| Noise (eNI) | - | - | 8 nV/√Hz | - |
| Bandwidth | - | - | 2 MHz (G = 1), 270 kHz (G = 100) | - |
| Common-Mode Rejection Ratio (CMRR) | 90 | - | - | dB |
| Power Supply Rejection Ratio (PSRR) | 110 | - | - | dB |
| Supply Current (IQ) | - | - | 385 µA | - |
| Supply Voltage Range | - | - | 4.5 V to 36 V (single), ±2.25 V to ±18 V (dual) | - |
| Operating Temperature Range | -40 | - | 125 | °C |
Key Features
- Low offset voltage: 10 µV (typ), 35 µV (max)
- Low gain drift: 5 ppm/°C (G = 1), 35 ppm/°C (G > 1)
- Low noise: 8 nV/√Hz
- High bandwidth: 2 MHz (G = 1), 270 kHz (G = 100)
- Stable with 1-nF capacitive loads
- Inputs protected up to ±60 V
- High common-mode rejection ratio: 110 dB (G = 10)
- High power supply rejection ratio: 110 dB (G = 1)
- Low power consumption: 385 µA (max)
- Wide supply voltage range: 4.5 V to 36 V (single), ±2.25 V to ±18 V (dual)
- Specified temperature range: –40°C to +125°C
Applications
- Analog input modules
- Flow transmitters
- Battery testing
- LCD testing
- Electrocardiogram (ECG) equipment
- Surgical equipment
- Process analytics (pH, gas, concentration, force, and humidity)
Q & A
- What is the typical input offset voltage of the INA819IDRGR?
The typical input offset voltage is 10 µV.
- What is the maximum gain drift for the INA819IDRGR?
The maximum gain drift is 5 ppm/°C for G = 1 and 35 ppm/°C for G > 1.
- What is the noise level of the INA819IDRGR?
The noise level is 8 nV/√Hz.
- What is the bandwidth of the INA819IDRGR at a gain of 1?
The bandwidth at a gain of 1 is 2 MHz.
- How are the inputs of the INA819IDRGR protected?
The inputs are protected up to ±60 V.
- What is the common-mode rejection ratio (CMRR) of the INA819IDRGR?
The CMRR is 110 dB at G = 10.
- What is the power supply rejection ratio (PSRR) of the INA819IDRGR?
The PSRR is 110 dB at G = 1.
- What is the maximum supply current of the INA819IDRGR?
The maximum supply current is 385 µA.
- What is the operating temperature range of the INA819IDRGR?
The operating temperature range is –40°C to +125°C.
- In what package is the INA819IDRGR available?
The INA819IDRGR is available in an 8-pin WSON package.
