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ADS2807Y250G4 Datasheet(PDF) 1 Page - Texas Instruments |
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ADS2807Y250G4 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 24 page ADS2807 Dual, 12-Bit, 50MHz Sampling ANALOG-TO-DIGITAL CONVERTER FEATURES q HIGH SNR: 66dB (2Vp-p), 68dB (3Vp-p) q LOW POWER: 720mW q INTERNAL OR EXTERNAL REFERENCE q LOW DLE: 0.6LSB q FLEXIBLE INPUT RANGE: 2Vp-p to 3Vp-p q TQFP-64 POWER PACKAGE APPLICATIONS q COMMUNICATIONS IF PROCESSING q COMMUNICATIONS BASESTATIONS q TEST EQUIPMENT q MEDICAL IMAGING q VIDEO DIGITIZING q CCD DIGITIZING Optional External Reference 12-Bit Pipelined ADC Error Correction Logic Timing Circuitry Internal Reference 3-State Outputs T&H D12A • • • D1A 12-Bit Pipelined ADC Error Correction Logic 3-State Outputs T&H D12B • • • D1B IN A CM A +V S OE A OVR A OVR B IN A INT/EXT CLK FS SEL (Opt.) IN B V IN CM B OE B IN B (Opt.) ADS2807 V IN DESCRIPTION The ADS2807 is a dual, high-speed, high dynamic range, 12-bit pipelined Analog-to-Digital Converter (ADC). This converter includes a high-bandwidth track-and-hold that gives excellent spurious performance up to and beyond the Nyquist rate. The differential nature of this track-and-hold and ADC circuitry minimizes even-order harmonics and gives excellent common-mode noise immunity. The track- and-hold can also be operated single-ended. The ADS2807 provides for setting the full-scale range of the converter without any external reference circuitry. The inter- nal reference can be disabled allowing low-drive, external references to be used for improved tracking in multichannel systems. The ADS2807 provides an over-range indicator flag to indicate an input signal that exceeds the full-scale input range of the converter. This flag can be used to reduce the gain of front-end gain control circuitry. There is also an output enable pin to allow for multiplexing and testability on a PC board. The ADS2807 employs digital error correction techniques to provide excellent differential linearity for demanding imag- ing applications. The ADS2807 is available in a TQFP-64 power package. ADS2807 SBAS169B – NOVEMBER 2000 – REVISED MAY 2002 www.ti.com PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright © 2000, Texas Instruments Incorporated Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. |
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