Part # AD6644 datasheet

Part Manufacturer: Analog Devices

Analog Devices

Part Description: AD6644 14-Bit 40 MSPS/65 MSPS Analog-to-Digital Converter Data Sheet (Rev. D)


Part Details:

14-Bit, 40 MSPS/65 MSPS Analog-to-Digital Converter AD6644 FEATURES Designed for multichannel, multimode receivers, the AD6644 is part of the Analog Devices, Inc. new SoftCell® transceiver 65 MSPS guaranteed sample rate 40 MSPS version available chipset. The AD6644 achieves 100 dB multitone, spurious-free Sampling jitter < 300 fs dynamic range (SFDR) through the Nyquist band. This break- 100 dB multitone SFDR through performance eases the burden placed on multimode 1.3 W power dissipation digital receivers (software radios) which are typically limited by Differential analog inputs the ADC. Noise performance is exceptional; typical signal-to- Pin compatible to AD6645 noise ratio is 74 dB. Twos complement digital output format The AD6644 is also useful in single channel digital receivers 3.3 V CMOS compatible designed for use in wide-channel bandwidth systems (CDMA, Data-ready for output latching WCDMA). With oversampling, harmonics can be placed outside the analysis bandwidth. Oversampling also facilitates the use of decimation receivers (such as the AD6620), allowing APPLICATIONS the noise floor in the analysis bandwidth to be reduced. By Multichannel, multimode receivers replacing traditional analog filters with predictable digital AMPS, IS-136, CDMA, GSM, WCDMA components, modern receivers can be built using fewer RF Single channel digital receivers components, resulting in decreased manufacturing costs, higher Antenna array processing manufacturing yields, and improved reliability. Communications instrumentation The AD6644 is built on the Analog Devices high speed Radar, infrared imaging complementary bipolar process (XFCB) and uses an innovative, Instrumentation multipass circuit architecture. Units are packaged in a 52-lead plastic low profile quad flat package (LQFP) specified from ­25°C to +85°C. GENERAL DESCRIPTION The AD6644 is a high speed, high performance, monolithic 14-bit PRODUCT HIGHLIGHTS analog-to-digital converter (ADC). All necessary functions, 1. Guaranteed sample rate is 65 MSPS. including track-and-hold (TH) and reference, are included on- 2. Fully differential analog input stage. chip to provide a complete conversion solution. The AD6644 3. Digital outputs can be run on 3.3 V supply for easy interface provides CMOS-compatible digital outputs. It is the third


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AD6644.pdf Datasheet