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AD9049BR Arkusz danych(PDF) 1 Page - Analog Devices |
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AD9049BR Arkusz danych(HTML) 1 Page - Analog Devices |
1 / 12 page FUNCTIONAL BLOCK DIAGRAM ENCODE AD9049 T/H ADC SUM AMP DAC ADC +5V DECODE LOGIC TIMING AIN AINB +5V GND REFERENCE CKTS 9 REV. A Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. a 9-Bit, 30 MSPS ADC AD9049 FEATURES Low Power: 300 mW On-Chip T/H, Reference Single +5 V Power Supply Operation Selectable 5 V or 3 V Logic I/O Wide Dynamic Performance APPLICATIONS Digital Communications Professional Video Medical Imaging Instrumentation PRODUCT DESCRIPTION The AD9049 is a complete 9-bit monolithic sampling analog- to-digital converter (ADC) with an onboard track-and-hold and reference. The unit is designed for low cost, high performance applications and requires only +5 V and an encode clock to achieve 30 MSPS sample rates with 9-bit resolution. The encode clock is TTL compatible and the digital outputs are CMOS; both can operate with 5 V/3 V logic, selected by the user. The two-step architecture used in the AD9049 is opti- mized to provide the best dynamic performance available while maintaining low power consumption. A 2.5 V reference is included onboard, or the user can provide an external reference voltage for gain control or matching of multiple devices. Fabricated on an advanced BiCMOS process, the AD9049 is packaged in space saving surface mount pack- ages (SOIC, SSOP) and is specified over the industrial (–40 °C to +85°C) temperature range. Figure 1. Typical Connections +5V 9 BITS 0.1µF 0.1µF 0.1µF ENCODE (2) 74AC574 3 4 10 5 6 9 1, 7, 12, 21, 23 13 2, 8, 11, 20, 22 AD9049 AIN (+3.3V ± 0.512V) +5V One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 617/329-4700 World Wide Web Site: http://www.analog.com Fax: 617/326-8703 © Analog Devices, Inc., 1996 |
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