Texas Instruments THS4541/THS4541-Q1 Differential I/O Amplifier

Texas Instruments THS4541/THS4541-Q1 High-Speed Differential I/O Amplifier is a low-power, voltage-feedback, fully differential amplifier (FDA) with an input common-mode range below the negative rail and rail-to-rail output. These devices are designed for low-power data acquisition systems where high density is critical in a high-performance analog-to-digital converter (ADC) or digital-to-analog converter (DAC) interface design. The THS4541/THS4541-Q1 features the negative-rail input required when interfacing a DC-coupled ground-centered source signal. This negative-rail input, with rail-to-rail output, allows for an easy interface between single-ended, ground-referenced, bipolar signal sources and a wide variety of SAR, ΔΣ, or pipeline ADCs using only a single +2.7V to +5.4V power supply. The Texas Instruments THS4541-Q1 devices are AEC-Q100 qualified for automotive applications.

Features

  • Fully Differential Amplifier (FDA) Architecture
  • 500 MHz (G = 2V/V) Bandwidth
  • 850MHz Gain Bandwidth Product
  • 1500V/µs Slew Rate
  • HD2: -95dBc at 10MHz (2VPP, RL = 500Ω)
  • HD3: -90dBc at 10MHz (2VPP, RL = 500Ω)
  • Input Voltage Noise: 2.2nV/Hz (f > 100kHz)
  • Low offset drift: ±0.5µV/°C (typ)
  • Negative Rail Input (NRI)
  • Rail-to-Rail Output (RRO)
  • Robust Operation for Rload ≥ 50Ω
  • Output Common-Mode Control
  • Power Supply
    • Single-Supply Voltage Range: 2.7V to 5.4V
    • Split-Supply Voltage Range: ±1.35V to ±2.7V
    • Quiescent Current: 10.1mA (5V Supply)
  • Power-Down Capability: 2µA (typ)

Applications

  • Low-Power, High-Performance ADC Driver
    • SAR, ΔΣ, and Pipeline
  • Low Power, High Performance (DC or AC Coupled)
    • Single-Ended to Differential Amplifier
    • Differential to Differential Amplifier
  • Differential Active Filters
  • Differential Transimpedance for DAC Outputs
  • DC- or AC-Coupled Interface to the ADC3xxx Family of Low-Power, High-Performance ADCs
  • Pin-Compatible Upgrade to ADA4932-1 (RGT)

Functional Block Diagram

Block Diagram - Texas Instruments THS4541/THS4541-Q1 Differential I/O Amplifier
Paskelbta: 2014-09-18 | Atnaujinta: 2024-08-09