INA126EA/250

The INA126 and INA2126 (INAx126) are precision instrumentation amplifiers designed for accurate, low-noise, differential signal acquisition. These devices feature a dual operational amplifier design with low quiescent current (175 μA per channel), providing excellent transient performance. With these characteristics and a wide operating voltage range from ±1.35 V to ±18 V, the INAx126 is well-suited for portable instrumentation and data acquisition systems. The gain can be set from 5 V/V to 10,000 V/V using a single external resistor. The precision input circuitry offers low offset voltage (250 μV maximum), low offset voltage drift (3 μV/°C maximum), and excellent common-mode rejection. All versions are rated for operation over the industrial temperature range of –40°C to +85°C.

Applications

• Level transmitter
• Flow transmitter
• Multi-parameter patient monitor
• Mixed module (AI, AO, DI, DO)
• AC charging station
• Infusion pump
• Electrocardiograph (ECG)

Key features

• Low quiescent current: 175 μA/channel
• Wide supply voltage range: ±1.35 V to ±18 V
• Low offset voltage: 250 μA (maximum)
• Low temperature drift: 3 μV/°C (maximum)
• Low noise: 35 nV/√Hz
• Low input bias current: 25 nA (maximum)
• Temperature range: –40°C to +85°C
• Multiple package options