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OPA625 Datasheet(PDF) 1 Page - Texas Instruments |
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OPA625 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 44 page 5 V 3.3 V Input Voltage Mode Control REF ADS8860 GND AVDD VREF / 4 VREF 1 k 1 k 10 nF 4.7 + ± OPA625 4.7 Frequency (kHz) -175 -150 -125 -100 -75 -50 -25 0 0 50 100 150 200 250 300 350 400 450 500 -115.91 dBc (Third Harmonic) THD = -110.8 dBc SNR = 91.88 dB SINAD = 91.86 dB ENOB = 14.97 Product Folder Sample & Buy Technical Documents Tools & Software Support & Community OPA625, OPA2625 SBOS688 – APRIL 2015 OPAx625 High-Bandwidth, High-Precision, Low THD+N, 16-Bit and 18-Bit Analog-to-Digital Converter (ADC) Drivers 1 Features 3 Description The OPAx625 family of operational amplifiers are 1 • High-Drive Mode: excellent 16-bit and 18-bit, SAR ADC drivers that are – GBW (G = 100): 120 MHz high precision with low THD and noise allow for a – Slew Rate: 115 V/µs unique power-scalable solution. This family of devices is fully characterized and specified with a 16-bit – 16-Bit Settling at 4-V Step: 280 ns settling time of 280 ns that enables a true 16-bit – Low Voltage Noise: 2.5 nV/ √Hz at 10 kHz effective number of bits (ENOB). Along with a high dc – Low Output Impedance: 1 Ω at 1 MHz precision of only 100 µV offset voltage, a wide gain- bandwidth product of 120 MHz, a low wideband noise – Offset Voltage: ±100 µV (max) of 2.5 nV/ √Hz, this family is optimized for driving high- – Offset Voltage Drift: ±3 µV/ºC (max) throughput, high-resolution SAR ADCs, such as the – Low Quiescent Current: 2 mA (typ) ADS88xx family of SAR ADCs. • Low-Power Mode: The OPAx625 features two operating modes: high- – GBW: 1 MHz drive and low-power. In the innovative low-power mode, the OPAx625 tracks the input signal allowing – Low Quiescent Current: 270 µA (typ) the OPAx625 to transition from low-power mode to • Power-Scalable Features: high-drive mode at 16-bit ENOB within 170 ns. – Ultrafast Transition from Low-Power to High- The OPAx625 family is available in 6-pin SOT and Drive Mode: 170 ns 10-pin VSSOP packages and is specified for • High AC and DC Precision: operation from –40°C to +125°C. – Low Distortion: –122 dBc for HD2 and –140 dBc for HD3 at 100 kHz Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) – Input Common-Mode Range Includes Negative Rail OPA625 SOT (6) 2.90 mm × 1.60 mm OPA2625(2) VSSOP (10) 3.00 mm × 3.00 mm – Rail-to-Rail Output – Wide Temperature Range: Fully Specified from (1) For all available packages, see the orderable addendum at the end of the data sheet. –40°C to +125°C (2) OPA2625 is product preview. 2 Applications 16-Bit SAR ADC, fIN = 10-kHz, 1-MSPS FFT • Precision SAR ADC Drivers • Precision Voltage Reference Buffers • Programmable Logic Controllers • Test and Measurement Equipment • Power-Sensitive Data Acquisition Systems SAR ADC Driver 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. UNLESS OTHERWISE NOTED, this document contains PRODUCTION DATA. |
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