THS4531/31A Fully-Differential Op Amps


Texas Instruments' ultra-low power 0.25 mA, RRO, fully differential amplifier

Texas Instruments' THS4531/31A are low-power, fully-differential op amps with an input common-mode range below the negative rail and rail-to-rail output. The devices is designed for low-power data acquisition systems and high density applications where power consumption and dissipation is critical.

The devices feature accurate output common-mode control that allows for DC coupling when driving analog-to-digital converters (ADCs). This control, coupled with the input common-mode range below the negative rail and rail-to-rail output, allows for easy interface from single-ended ground-referenced signal sources to successive-approximation registers (SARs), and delta-sigma (ΔΣ) ADCs using only single-supply 2.5 V to 5 V power.

Features
  • Ultra low power:
    • Voltage: 2.5 V to 5.5 V
    • Current: 250 µA
    • Power-down mode: 0.5 µA (typ)
  • Fully-differential architecture
  • Bandwidth: 36 MHz
  • Slew rate: 200 V/µs
  • THD: -120 dBc at 1 kHz (1 VRMS, RL= 2 kΩ)

  • Low-power SAR, ΔΣ ADC driver
  • Low power, high performance:
    • Differential to differential amplifier
    • Single-ended to differential amplifier
  • Low-power, wide-bandwidth differential driver
  • Low-power, wide-bandwidth differential signal conditioning
  • High channel count and power dense systems

THS4531/31A Fully-Differential Op Amps

Manufacturer Part Number Description Available Quantity Datasheets
THS4531IDR IC OPAMP DIFF 27MHZ RRO 8SOIC 8024
THS4531AIDGK IC OPAMP DIFF 27MHZ RRO 8VSSOP 447
THS4531AID IC OPAMP DIFF 27MHZ RRO 8SOIC 252

Evaluation Modules

Manufacturer Part Number Description Available Quantity Datasheets
THS4531DGKEVM EVAL MODULE FOR THS4531 5
THS4531ADGKEVM MODULE EVAL FOR THS4531A 0