AD6644ASTZ-40 Standard High Speed A/D Converters by Analog Devices

Status: Production
Series: AD6644
RoHS: Compliant
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The AD6644 is a high speed, high performance, monolithic 14-bit analog-to-digital converter (ADC). All necessary functions, including track-and-hold (TH) and reference are included on- chip to provide a complete conversion solution. The AD6644 provides CMOS-compatible digital outputs. It is the third generation in a wideband ADC family, preceded by the AD9042 (12-bit 41 MSPS) and the AD6640 (12-bit 65 MSPS, IF sampling).Designed for multichannel, multimode receivers, the AD6644 is part of the Analog Devices, Inc. new SoftCell® transceiver chipset. The AD6644 achieves 100 dB multitone, spurious-free dynamic range (SFDR) through the Nyquist band. This break- through performance eases the burden placed on multimode digital receivers (software radios) which are typically limited by the ADC. Noise performance is exceptional; typical signal-to- noise ratio is 74 dB.The AD6644 is also useful in single channel digital receivers designed for use in wide-channel bandwidth systems (CDMA, WCDMA). With oversampling, harmonics can be placed outside the analysis bandwidth. Oversampling also facilitates the use of decimation receivers (such as the AD6620), allowing the noise floor in the analysis bandwidth to be reduced. By replacing traditional analog filters with predictable digital components, modern receivers can be built using fewer RF components, resulting in decreased manufacturing costs, higher manufacturing yields, and improved reliability.The AD6644 is built on the Analog Devices high speed complementary bipolar process (XFCB) and uses an innovative, multipass circuit architecture. Units are packaged in a 52-lead plastic low profile quad flat package (LQFP) specified from – 25°C to +85°C.PRODUCT HIGHLIGHTS Guaranteed sample rate is 65 MSPS. Fully differential analog input stage. Digital outputs can be run on 3.3 V supply for easy interface to digital ASICs. Complete solution: reference and track-and-hold. Packaged in small, surface-mount, plastic, 52-lead LQFP.

Prices starting from US$72.80

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Logo for Analog Devices Analog Devices US$80.40
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Logo for Farnell Farnell US$80.99
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Logo for Newark Electronics Newark Electronics US$72.81
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Logo for element14 element14 US$76.80
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Logo for Richardson RFPD Richardson RFPD US$72.80
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65 MSPS guaranteed sample rate
40 MSPS version available
Sampling jitter < 300 fs
100 dB multitone SFDR
1.3 W power dissipation
Differential analog inputs
Pin compatible to AD6645
Twos complement digital output format
3.3 V CMOS compatible
Data-ready for output latching

Alternative Descriptions

14 Bit 40 MSPS ADC | Analog Devices
ADC, 14BIT, 40MSPS, LQFP-52 | Farnell
Adc, 14Bit, 40Msps, Lqfp-52 | Newark Electronics

Frequently Asked Questions

Where can I find additional details, specifications and documents for a AD6644ASTZ-40?

Additional datasheets, footprints and schematics for AD6644ASTZ-40 are listed on our Part Details page. You can also find images and similar parts to AD6644ASTZ-40 on this page.

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What category does AD6644ASTZ-40 fall under?

The AD6644ASTZ-40 is listed under Standard High Speed A/D Converters.

Can I view similar or alternative parts?

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Is the AD6644ASTZ-40 RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Analog Devices.

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Authorised distributors including Analog Devices, Farnell, Newark Electronics, element14 and Richardson RFPD have stock available or on a lead time for AD6644ASTZ-40.

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