INA333AIDGKR

The INA333 is a low-power, precision instrumentation amplifier offering excellent accuracy. The versatile 3-op amp design, small size, and low power make it ideal for a wide range of portable applications. A single external resistor sets any gain from 1 to 1000. The INA333 is designed to use an industry-standard gain equation: G = 1 + (100kΩ/RG). The INA333 provides very low offset voltage (25μV, G ≥100), excellent offset voltage drift (0.1 μV/°C, G ≥100), and high common-mode rejection (100dB at G ≥10). It operates with power supplies as low as 1.8V (±0.9V), and quiescent current is only 50μA —ideal for battery-operated systems. Using autocalibration techniques to ensure excellent precision over the extended industrial temperature range, the INA333 also offers exceptionally low noise density (50nV/√Hz) that extends down to dc. The INA333 is available in both MSOP-8 and DFN-8 surface-mount packages and is specified over the TA = -40°C to +125°C temperature range.

Applications

• BRIDGE AMPLIFIERS
• ECG AMPLIFIERS
• PRESSURE SENSORS
• MEDICAL INSTRUMENTATION
• PORTABLE INSTRUMENTATION
• WEIGH SCALES
• THERMOCOUPLE AMPLIFIERS
• RTD SENSOR AMPLIFIERS
• DATA ACQUISITION

Key features

• LOW OFFSET VOLTAGE: 25μV (max), G ≥100
• LOW DRIFT: 0.1μV/°C, G ≥100
• LOW NOISE: 50nV/√Hz, G ≥100
• HIGH CMRR: 100dB (min), G ≥10
• LOW INPUT BIAS CURRENT: 200pA (max)
• SUPPLY RANGE: +1.8V to +5.5V
• INPUT VOLTAGE: (V–)+0.1V to (V+)-0.1V
• OUTPUT RANGE: (V–)+0.05V to (V+)-0.05V
• LOW QUIESCENT CURRENT: 50μA
• OPERATING TEMPERATURE: -40°C to +125°C
• RFI FILTERED INPUTS
• MSOP-8 AND DFN-8 PACKAGES