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ADS808

Part Number	ADS808
Manufacturer	Burr-Brown Corporation
Description	12-Bit/ 70MHz Sampling ANALOG-TO-DIGITAL CONVERTER
Published	Mar 23, 2005
Detailed Description	ADS808 ADS 808 SBAS179C – DECEMBER 2000 – REVISED SEPTEMBER 2002 12-Bit, 70MHz Sampling ANALOG-TO-DIGITAL CONVERTER FE...
Datasheet	ADS808 PDF File

Overview

ADS808 ADS 808 SBAS179C – DECEMBER 2000 – REVISED SEPTEMBER 2002 12-Bit, 70MHz Sampling ANALOG-TO-DIGITAL CONVERTER FEATURES q DYNAMIC RANGE: SNR: 64dB at 10MHz fIN SFDR: 68dB at 10MHz fIN q PREMIUM TRACK-AND-HOLD: Low Jitter: 0.
25ps rms Differential or Single-Ended Inputs Selectable Full-Scale Input Range q FLEXIBLE CLOCKING: Differential or Single-Ended Accepts Sine or Square Wave Clocking Down to 0.
5Vp-p Variable Threshold Level DESCRIPTION The ADS808 is a high-dynamic range, 12-bit, 70MHz, pipelined Analog-to-Digital Converter (ADC).
It includes a high-bandwidth linear track-and-hold that has a low jitter of only 0.
25ps rms, leading to excellent SNR performance.
The clock input can accept a low-level differential sine wave or square wave signal down to 0.
5Vp-p, further improving the SNR performance.
It also accepts a single-ended clock signal and has flexible threshold levels.
The ADS808 has a 2Vp-p differential input range (1Vp-p • 2 inputs) for optimum signal-to-noise ratio.
The differential operation gives the lowest even-order harmonic components.
A lower input voltage of 1.
5Vp-p or 1Vp-p can also be selected using the internal references, further optimizing SFDR.
Alternatively, a single-ended input range can be used by tying the IN input to the common-mode voltage, if desired.
The ADS808 also provides an over-range flag that indicates when the input signal has exceeded the converter’s full-scale range.
This flag can also be used to reduce the gain of the front-end signal conditioning circuitry.
It also employs digital error-correction techniques to provide excellent differential linearity for demanding imaging applications.
The ADS808 is available in a small TQFP-48 PowerPAD™ thermally enhanced package.
PowerPAD is a registered trademark of Texas Instruments.
+VS DV APPLICATIONS q BASESTATION WIDEBAND RADIOS: CDMA, GSM, TDMA, 3G, AMPS, and NMT q TEST INSTRUMENTATION q CCD IMAGING CLK ADS808 Timing Circuitry CLK 1Vp-p 1Vp-p IN T&H IN 12-Bit Pipelined...

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