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ADS805 Datasheet(PDF) 1 Page - Burr-Brown (TI) |
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ADS805 Datasheet(HTML) 1 Page - Burr-Brown (TI) |
1 / 12 page ADS805 ® International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111 • Twx: 910-952-1111 Internet: http://www.burr-brown.com/ • FAXLine: (800) 548-6133 (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132 ©1997 Burr-Brown Corporation PDS-1397C Printed in U.S.A. October, 1998 12-Bit, 20MHz Sampling ANALOG-TO-DIGITAL CONVERTER TM FEATURES q HIGH SFDR: 74dB at 9.8MHz f IN q HIGH SNR: 68dB q LOW POWER: 300mW q LOW DLE: 0.25LSB q SMALL 28-LEAD SSOP AND SOIC PACKAGES q FLEXIBLE INPUT RANGE q OVER-RANGE INDICATOR APPLICATIONS q STUDIO CAMERAS q IF AND BASEBAND DIGITIZATION q COPIERS q TEST INSTRUMENTATION DESCRIPTION The ADS805 is a 20MHz, high dynamic range, 12-bit pipelined analog-to-digital converter. This converter includes a high-band- width track/hold that gives excellent spurious performance up to and beyond the Nyquist rate. This high-bandwidth, linear track/hold minimizes harmonics and has low jitter, leading to excellent SNR performance. The ADS805 is also pin-compatible with the 10MHz ADS804 and the 5MHz ADS803. The ADS805 provides an internal reference or an external reference can be used. ADS805 can be programmed for a 2Vp-p input range which is the easiest to drive with a single op amp and provides the best spurious performance. Alternatively, the 5Vp-p input range can be used for the lowest input-referred noise of 0.09 LSBs rms giving ADS805U ADS805E superior imaging performance. There is also the capability to set the input range between 2Vp-p and 5Vp-p, either single-ended or differential. The ADS805 also provides an overrange 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. The ADS805 employs digital error techniques to provide excellent differential linearity for demanding imaging applications. Its low distortion and high SNR give the extra margin needed for commu- nications, medical imaging, video and test instrumentation applica- tions. The ADS805 is available in 28-lead SSOP and SOIC pack- ages. 12-Bit Pipelined A/D Core Reference and Mode Select Reference Ladder and Driver Timing Circuitry Error Correction Logic 3-State Outputs T/H D0 D11 • • • CLK +V S ADS805 VDRV OE SEL REFB V REF REFT IN V IN IN CM OVR |
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