1 Features

. Fully differential amplifier (FDA) architecture

. Bandwidth: 500MHz (G = 2V/V)

. Gain bandwidth product: 850MHz

. Slew rate: 1500V/μs

. 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 (typical)

. 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 (typical)

2 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)

3 Description

The THS4541 is a low-power, voltage-feedback, fully

differential amplifier (FDA) with an input commonmode

range below the negative rail, and rail-to-rail

output. The THS4541 is 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-torail

output, allows for easy interface between singleended,

ground-referenced, bipolar signal sources and

a wide variety of successive approximation register

(SAR), delta-sigma (ΔΣ), or pipeline ADCs using only

a single 2.7V to 5.4V power supply.

The THS4541 is characterized for operation over

the wide temperature range of .40°C to +125°C

and is available in 16-pin VQFN and 10-pin WQFN

packages.