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THS4521 Datasheet(PDF) 1 Page - Texas Instruments |
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THS4521 Datasheet(HTML) 1 Page - Texas Instruments |
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1 / 51 page  THS4561 Low-Power, High Supply Range, 60-MHz, Fully Differential Amplifier 1 Features • Bandwidth: 60 MHz (G = 1 V/V) • Slew Rate: 230 V/µs • Gain Bandwidth Product: 68 MHz • Voltage Noise: – 1/f Voltage Noise Corner: 8 Hz – Broadband Noise (≥ 500 Hz): 4 nV/√ Hz • Input Offset: ±250 µV (Maximum) – Drift: ±4 µV/°C (Maximum) • Supply Operating Range: 2.85 V to 12.6 V • Supply Current: 775 µA • Negative Rail Input (NRI) • Rail-to-Rail Output (RRO) • Very Low Harmonic Distortion: – HD2: –117 dBc at 2 VPP, 100 kHz – HD3: –124 dBc at 2 VPP, 100 kHz • 0.01% Settling (2-V Step): 90 ns 2 Applications • 16-bit to 20-bit, Differential, SAR and ΔΣ Drivers • Differential Active Filters • High Output Swing PCM Audio DAC Outputs • Medical Ultrasounds • Battery Testers • Power Analyzers • Lower Power Alternate to the THS4551 3 Description The THS4561 fully differential amplifier (FDA) offers a simple interface from single-ended sources to the differential output required by precision analog-to- digital converters (ADCs). Designed for a very low, 8-Hz, 1/f voltage noise corner and low, 130-dB total harmonic distortion (THD) while consuming only a 775-µA quiescent current, the THS4561 is well suited for power-sensitive data acquisition (DAQ) systems where high performance is required with the best signal-to-noise ratio (SNR) and spurious-free dynamic range (SFDR) through the amplifier and ADC combination. The THS4561 features the required negative rail input when interfacing a DC-coupled, ground-centered, source signal to a single-supply, differential-input ADC. Low DC error and drift terms support the emerging high-speed and high-resolution successive approximation register (SAR) and delta-sigma (ΔΣ) ADC input requirements. A 2.85-V to 12.6-V supply range with a flexible output common-mode setting with low headroom to the supplies supports a wide range of ADC input and digital-to-analog converter (DAC) output requirements. The THS4561 device is characterized for operation from –40°C to +125°C. Device Information PART NUMBER PACKAGE(1) BODY SIZE (NOM) THS4561 VSSOP (8) 3.00 mm × 3.00 mm WQFN (10) 2.00 mm × 2.00 mm VQFN (16)(2) 3.00 mm × 3.00 mm (1) For all available packages, see the package option addendum at the end of the data sheet. (2) Preview package. FDA PCM Audio DAC Output THS4561 Using ±5 VS G = 10 V/V 50-kHz MFB Butterworth Output Driver 330 pF 330 pF VS+ VS± +5 V PD 10 nF 10 nF 357 + ± 357 909 3.57 k 909 3.57 k VS+ 150 pF ±5 V + ± VS± Gain of 10 V/V PCM Audio DAC Output With Second-Order MFB Filter at 50 kHz Frequency (Hz) -150 -140 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 10k 100k 1M 10M D007 HD2, VO = 2 VPP HD3, VO = 2 VPP HD2, VO = 8 VPP HD3, VO = 8 VPP HD2, VO = 10 VPP HD3, VO = 10 VPP Harmonic Distortion vs Frequency www.ti.com THS4561 SBOS874C – AUGUST 2017 – REVISED DECEMBER 2020 Copyright © 2020 Texas Instruments Incorporated Submit Document Feedback 1 Product Folder Links: THS4561 THS4561 SBOS874C – AUGUST 2017 – REVISED DECEMBER 2020 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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