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THS4541IRUNR.B Datasheet(PDF) 1 Page - Texas Instruments |
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THS4541IRUNR.B Datasheet(HTML) 1 Page - Texas Instruments |
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1 / 66 page  THS4541 Negative Rail Input, Rail-to-Rail Output, Precision, 850MHz Fully Differential Amplifier 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 common- mode 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-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 2.7V 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. Package Information PART NUMBER(1) PACKAGE(2) PACKAGE SIZE(3) THS4541 RGT (VQFN, 16) 3mm × 3mm RUN (WQFN, 10) 2mm × 2mm (1) See Section 4 (2) For more information, see Section 12. (3) The package size (length × width) is a nominal value and includes pins, where applicable. C2 100 nF Rf1 402 Rload 500 Rg1 191 C1 100 nF Rg2 221 Rt 60.2 Output Measurement Point THS4541 Wideband, Fully-Differential Amplifier 50- Input Match, Gain of 2 V/V from Rt, Single-Ended Source to Differential Output Vocm Rf2 402 50- Source + ± Vcc + ± Vocm Vcc FDA PD Simplified Schematic Frequency (MHz) 0.1 1 10 50 -140 -130 -120 -110 -100 -90 -80 -70 -60 -50 D013 HD2 HD3 Single to Differential Gain of 2, 2VPP Output THS4541 SLOS375B – AUGUST 2014 – REVISED FEBRUARY 2024 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. |
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