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THS4281DGKR Datasheet(PDF) 1 Page - Texas Instruments |
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THS4281DGKR Datasheet(HTML) 1 Page - Texas Instruments |
1 / 43 page + - 100 2.5 ADS8320 10 nF 500 V BAT Load +IN -IN V OUT = I RSENSE 0.2 W I RSENSE THS4281 470 pF 470 pF VBAT VBAT W kW W 2.5 kW 500 W VBAT/2 Product Folder Sample & Buy Technical Documents Tools & Software Support & Community THS4281 SLOS432B – APRIL 2004 – REVISED OCTOBER 2015 THS4281 Very Low-Power, High-Speed, Rail-to-Rail Input and Output Voltage-Feedback Operational Amplifier 1 Features 3 Description Fabricated using the BiCom-II process, the THS4281 1 • Very Low Quiescent Current: 750 μA (at 5 V) is a low-power, rail-to-rail input and output, voltage- • Rail-to-Rail Input and Output: feedback operational amplifier designed to operate – Common-Mode Input Voltage Extends over a wide power-supply range of 2.7-V to 15-V 400 mV Beyond the Rails single supply, and ±1.35-V to ±7.5-V dual supply. Consuming only 750 μA with a unity gain bandwidth – Output Swings Within 150 mV From the Rails of 90 MHz and a high 35-V/ μs slew rate, the • Wide –3-dB Bandwidth at 5 V: THS4281 allows portable or other power-sensitive – 90 MHz at Gain = +1, 40 MHz at Gain = +2 applications to realize high performance with minimal power. To ensure long battery life in portable • High Slew Rate: 35 V/ μs applications, the quiescent current is trimmed to be • Fast Settling Time (2-V Step): less than 900 μA at +25°C, and 1 mA from –40°C to – 78 ns to 0.1% +85°C. – 150 ns to 0.01% The THS4281 is a true single-supply amplifier with a • Low Distortion at Gain = +2, VO = 2-VPP, 5 V: specified common-mode input range of 400 mV beyond the rails. This allows for high-side current – –91 dBc at 100 kHz, –67 dBc at 1 MHz sensing applications without phase reversal • Input Offset Voltage: 2.5 mV (Max at +25°C) concerns. Its output swings to within 40 mV from the • Output Current > 30 mA (10- Ω Load, 5 V) rails with 10-k Ω loads, and 150 mV from the rails with 1-k Ω loads. • Low Voltage Noise of 12.5 nV/ √Hz • Supply Voltages: +2.7 V, 3 V, +5 V, ±5 V, +15 V The THS4281 has a good 0.1% settling time of 78 ns, and 0.01% settling time of 150 ns. The low THD of • Packages: SOT23, MSOP, and SOIC –87 dBc at 100 kHz, coupled with a maximum offset voltage of less than 2.5 mV, makes the THS4281 a 2 Applications good match for high-resolution ADCs sampling less • Portable/Battery-Powered Applications than 2 MSPS. • High Channel Count Systems The THS4281 is offered in a space-saving SOT23-5 • ADC Buffer package, a small MSOP-8 package, and the industry standard SOIC-8 package. • Active Filters • Current Sensing Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) SOIC (8) 4.90 mm × 3.91 mm THS4281 SOT-23 (5) 2.90 mm × 1.60 mm VSSOP (8) 3.00 mm × 3.00 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. High-side, Low Power Current-Sensing system 1 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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