INA823DT

The INA823 is an integrated instrumentation amplifier that offers low power consumption and can operate over a wide range of single or dual supply voltages. Any gain can be set from 1 to 10,000 using a single external resistor. This device provides low input offset voltage, low offset voltage drift, low input bias current, and low current noise, while being cost-effective. Additional circuitry can provide up to ±60V overvoltage protection for the inputs. The INA823 is optimized to provide a high common-mode rejection ratio. When G = 1, the common-mode rejection ratio exceeds 84dB over the entire input common-mode range. The INA823 can achieve a wide common-mode voltage range, down to 150mV below the negative supply. By design, this device operates at low voltages, powered by a single 2.7V supply or dual supplies up to ±18V. It offers low power consumption and can operate from a single supply, thus supporting handheld battery-powered systems.

Applications

• Flow transmitters
• Wearable fitness and activity monitors
• Infusion pumps
• Blood glucose monitoring
• Electrocardiogram (ECG)
• Surgical equipment
• Weighing scales
• Analog input modules
• Process analysis (pH, gas, concentration, force, and humidity)
• Battery testing

Key features

• Input overvoltage protection up to ±60V
• Input voltage range extends 150mV below the negative supply
• Low supply current: 180μA (typical)
• Low offset voltage: 20μV (typical), 100μV (maximum)
• Low input bias current: 8nA (maximum)
• Common-mode rejection: 84dB, G = 1 (minimum); 104dB, G = 10 (minimum); 120dB, G ≥ 100 (minimum)
• Power supply rejection: 100dB, G = 1 (minimum)
• Input voltage noise: 21nV/√Hz
• Bandwidth: 1.9MHz (G = 1), 60kHz (G = 100)
• Stable with 1nF capacitive load
• Supply voltage range: single supply 2.7V to 36V; dual supply ±1.35V to ±18V
• Rated temperature range: -40°C to +125°C
• Package: 8-pin SOIC and 8-pin VSSOP