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4541 Datasheet

Part NameDescriptionManufacturer
4541 Negative Rail Input, Rail-to-Rail Output, Precision, 850-MHz Fully Differential Amplifier TI
Texas Instruments TI
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Description
The THS4541 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. 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 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 easy interface between single-ended, ground-referenced, bipolar signal sources and a wide variety of successive approximation register (SAR), delta-sigma (ΔΣ), or pipeline ADCs using only a single +2.7-V to +5.4-V power supply.
The THS4541 is characterized for operation over the wide temperature range of –40°C to 125°C available in 16-pin VQFN and 10-pin WQFN packages.

Features
• Fully Differential Amplifier (FDA) Architecture
• Bandwidth: 500 MHz (G = 2 V/V)
• Gain Bandwidth Product: 850 MHz
• Slew Rate: 1500 V/µs
• HD2: –95 dBc at 10 MHz (2 VPP, RL = 500 Ω)
• HD3: –90 dBc at 10 MHz (2 VPP, RL = 500 Ω)
• Input Voltage Noise: 2.2 nV/Hz (f > 100 kHz)
• Low offset drift: ±0.5 µV/°C (typ)
• Negative Rail Input (NRI)
• Rail-to-Rail Output (RRO)
• Robust Operation for Rload ≥ 50 Ω
• Output Common-Mode Control
• Power Supply:
   – Single-Supply Voltage Range: 2.7 V to 5.4 V
   – Split-Supply Voltage Range: ±1.35 V to ±2.7 V
   – Quiescent Current: 10.1 mA (5-V Supply)
• Power-Down Capability: 2 µA (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 to ADA4932-1 (VQFN-16)

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