Overview
The INA826 is a precision instrumentation amplifier produced by Texas Instruments. It is designed to offer low power consumption and a wide range of supply voltage options, making it versatile for various applications. The device operates on a single supply from 3 V to 36 V or dual supplies from ±1.5 V to ±18 V. It features a rail-to-rail output and excellent stability over temperature, with a low gain drift of 35 ppm/°C (maximum) for gains greater than 1. The INA826 is available in 8-pin SOIC, VSSOP, and WSON surface-mount packages, all specified for the –40°C to +125°C temperature range.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (Single Supply) | 3 | - | 36 | V |
| Supply Voltage (Dual Supply) | ±1.5 | - | ±18 | V |
| Quiescent Current | 200 | 250 | 300 | µA |
| Input Stage Offset Voltage | 40 | 150 | - | µV |
| Common-Mode Rejection Ratio (G = 10) | 104 | - | - | dB |
| Power-Supply Rejection Ratio (G = 1) | 100 | - | - | dB |
| Bandwidth (G = 1) | 1 | - | - | MHz |
| Bandwidth (G = 100) | 60 | - | - | kHz |
| Input Overvoltage Range | ±40 | - | - | V |
| Operating Temperature Range | –40 | - | 125 | °C |
Key Features
- Low power consumption: 200 µA quiescent current.
- Wide supply range: Single supply from 3 V to 36 V, dual supply from ±1.5 V to ±18 V.
- Rail-to-rail output.
- Excellent common-mode rejection ratio: Over 100 dB (G = 10) up to 5 kHz.
- Low offset voltage: 150 µV maximum.
- Low gain drift: 1 ppm/°C (G = 1), 35 ppm/°C (G > 1).
- High bandwidth: 1 MHz (G = 1), 60 kHz (G = 100).
- Input protection up to ±40 V beyond the power supplies.
- Available in 8-pin SOIC, VSSOP, and WSON packages.
Applications
- Analog input modules.
- Flow transmitters.
- Battery testing.
- LCD testing.
- Electrocardiogram (ECG) equipment.
- Surgical equipment.
- Process analytics (pH, gas, concentration, force, and humidity).
- Circuit breakers (ACB, MCCB, VCB).
Q & A
- What is the supply voltage range for the INA826?
The INA826 can operate on a single supply from 3 V to 36 V or dual supplies from ±1.5 V to ±18 V.
- What is the quiescent current of the INA826?
The quiescent current of the INA826 is 200 µA.
- What is the common-mode rejection ratio of the INA826?
The common-mode rejection ratio of the INA826 is over 100 dB (G = 10) up to 5 kHz.
- What is the maximum offset voltage of the INA826?
The maximum offset voltage of the INA826 is 150 µV.
- What is the gain drift of the INA826?
The gain drift of the INA826 is 1 ppm/°C (G = 1) and 35 ppm/°C (G > 1).
- What is the bandwidth of the INA826 at G = 1 and G = 100?
The bandwidth of the INA826 is 1 MHz at G = 1 and 60 kHz at G = 100.
- How is the input protected in the INA826?
The inputs of the INA826 are protected up to ±40 V beyond the power supplies.
- In what packages is the INA826 available?
The INA826 is available in 8-pin SOIC, VSSOP, and WSON packages.
- What is the operating temperature range of the INA826?
The operating temperature range of the INA826 is –40°C to +125°C.
- What are some typical applications of the INA826?
The INA826 is typically used in analog input modules, flow transmitters, battery testing, LCD testing, ECG equipment, surgical equipment, process analytics, and circuit breakers.
