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AD6640 Fiches technique(PDF) 1 Page - Analog Devices

No de pièce AD6640
Description  12-Bit, 65 MSPS IF Sampling A/D Converter
Download  24 Pages
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Fabricant  AD [Analog Devices]
Site Internet  http://www.analog.com
Logo AD - Analog Devices

AD6640 Fiches technique(HTML) 1 Page - Analog Devices

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a
12-Bit, 65 MSPS
IF Sampling A/D Converter
FEATURES
65 MSPS Minimum Sample Rate
80 dB Spurious-Free Dynamic Range
IF Sampling to 70 MHz
710 mW Power Dissipation
Single 5 V Supply
On-Chip T/H and Reference
Twos Complement Output Format
3.3 V or 5 V CMOS Compatible Output Levels
APPLICATIONS
Cellular/PCS Base Stations
Multichannel, Multimode Receivers
GPS Anti-Jamming Receivers
Communications Receivers
Phased Array Receivers
FUNCTIONAL BLOCK DIAGRAM
ADC
A
TH3
DAC
ADC
TH2
BUF
TH1
MSB
LSB
D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
DIGITAL ERROR CORRECTION LOGIC
7
GND
6
AIN
AIN
VREF
ENCODE
ENCODE
2.4V
REFERENCE
INTERNAL
TIMING
AVCC
DVCC
AD6640
GENERAL DESCRIPTION
The AD6640 is a high speed, high performance, low power,
monolithic 12-bit analog-to-digital converter. All necessary
functions, including track-and-hold (T/H) and reference, are
included on-chip to provide a complete conversion solution.
The AD6640 runs on a single 5 V supply and provides CMOS
compatible digital outputs at 65 MSPS.
Specifically designed to address the needs of multichannel,
multimode receivers, the AD6640 maintains 80 dB spurious-
free dynamic range (SFDR) over a bandwidth of 25 MHz.
Noise performance is also exceptional: typical signal-to-noise
ratio is 68 dB.
The AD6640 is built on Analog Devices’ high speed complemen-
tary bipolar process (XFCB) and uses an innovative multipass
architecture. Units are packaged in a 44-lead plastic quad flatpack
(LQFP) specified from –40
°C to +85°C.
PRODUCT HIGHLIGHTS
1. Guaranteed sample rate is 65 MSPS.
2. Fully differential analog input stage specified for frequencies
up to 70 MHz; enables IF sampling.
3. Low power dissipation: 710 mW off a single 5 V supply.
4. Digital outputs may be run on 3.3 V supply for easy interface
to digital ASICs.
5. Complete solution: reference and track-and-hold.
6. Packaged in small, surface-mount 44-lead plastic LQFP.
AD6640
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 that
may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective companies.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
www.analog.com
Fax: 781/326-8703
© 2003 Analog Devices, Inc. All rights reserved.


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