Features for the THS4531

• Ultra Low Power:
  • Voltage: 2.5 V to 5.5 V
  • Current: 250 µA
  • Power-Down Mode: 0.5 µA(typical)
• Fully-Differential Architecture
• Bandwidth: 36 MHz
• Slew Rate: 200 V/µs
• THD: –120 dBc at 1 kHz (1 VRMS, RL= 2 kΩ)
• Input Voltage Noise: 10 nV/√Hz (f = 1 kHz)
• High DC Accuracy:
  • VOS Drift: ±4 µV/˚C (–40°C to+125°C)
  • AOL: 114dB
• Rail-to-Rail Output (RRO)
• Negative Rail Input (NRI)
• Output Common-Mode Control

Description for the THS4531

The THS4531 is a low-power, fully-differential op amp with input common-mode range belowthe negative rail and rail-to-rail output. The device is designed for low-power data acquisitionsystems and high density applications where power consumption and dissipation is critical.

The device features accurate output common-mode control that allows for dc coupling whendriving analog-to-digital converters (ADCs). This control, coupled with the input common-mode rangebelow the negative rail and rail-to-rail output, allows for easy interface from single-endedground-referenced signal sources to successive-approximation registers (SARs), and delta-sigma (ΔΣ)ADCs using only single-supply 2.5 V to 5 V power. The THS4531 is also a valuable tool forgeneral-purpose, low-power differential signal conditioning applications.

The THS4531 is characterized for operation over the extended industrial temperature rangefrom –40°C to +125°C. The following package options are available: