INA826AIDR

The INA826 is a low-cost instrumentation amplifier with extremely low power consumption and can operate over a very wide single-supply or dual-supply range. The gain can be set from 1 to 1000 using a single external resistor. This device exhibits excellent stability under overheating conditions, achieving a low gain drift of only 35 ppm/°C (maximum) even when G > 1. The INA826 is optimized to provide an excellent common-mode rejection ratio (CMRR) of over 100 dB at frequencies up to 5 kHz (G = 10). When G = 1, the CMRR exceeds 84 dB across the entire input common-mode range from the negative supply to 1 V positive supply. The INA826 features rail-to-rail output and is well-suited for low-voltage operation with a single 3 V supply and dual supplies up to ±18 V. Additional circuitry can prevent overvoltage conditions (up to ±40 V) at the inputs beyond the supply voltages by limiting the input current to less than 8 mA. The INA826 is available in 8-pin SOIC, VSSOP, and a miniature 3 mm × 3 mm WSON surface-mount packages. All versions are specified for operation over a temperature range of -40°C to +125°C.

Applications

• Industrial process control
• Circuit breakers
• Battery testers
• ECG amplifiers
• Power automation
• Medical instrumentation
• Portable instrumentation

Key features

• Input common-mode range: includes V-
• Common-mode rejection: 104dB minimum (G = 10); 100dB minimum at 5kHz (G = 10)
• Power supply rejection: 100dB minimum (G = 1)
• Low offset voltage: 150μV maximum
• Gain drift: 1ppm/°C (G = 1), 35ppm/°C (G > 1)
• Noise: 18nV/√Hz, G ≥ 100
• Bandwidth: 1MHz (G = 1), 60kHz (G = 100)
• Input protection up to ±40V
• Rail-to-rail output
• Supply current: 200μA
• Supply range: Single supply: 3V to 36V; Dual supply: ±1.5V to ±18V
• Specified temperature range: -40°C to +125°C
• Package: 8-pin VSSOP, SOIC, and WSON