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ADS809

Part Number	ADS809
Manufacturer	Burr-Brown Corporation
Description	12-Bit/ 80MHz Sampling ANALOG-TO-DIGITAL CONVERTER
Published	Mar 23, 2005
Detailed Description	ADS809 ADS 809 SBAS170C – NOVEMBER 2000 – REVISED JANUARY 2003 12-Bit, 80MHz Sampling ANALOG-TO-DIGITAL CONVERTER FEAT...
Datasheet	ADS809 PDF File

Overview

ADS809 ADS 809 SBAS170C – NOVEMBER 2000 – REVISED JANUARY 2003 12-Bit, 80MHz Sampling ANALOG-TO-DIGITAL CONVERTER FEATURES q DYNAMIC RANGE: SNR: 65dB at 10MHz fIN SFDR: 68dB at 10MHz fIN q PREMIUM TRACK-AND-HOLD: Low Jitter: 0.
5ps 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 ADS809 is a high-dynamic range, 12-bit, 80MHz, pipelined Analog-to-Digital Converter (ADC).
It includes a high-bandwidth linear track-and-hold that has a low jitter of only 0.
5ps rms, leading to excellent Signal-to-Noise Ratio (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 ADS809 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 Spurious-Free Dynamic Range (SFDR).
Alternatively, a singleended input range can be used by tying the IN input to the common-mode voltage if desired.
The ADS809 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 ADS809 is available in a small TQFP-48 PowerPAD™ thermallyenhanced 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 ADS809 Timing Circuitr...

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