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AD7625 PDF预览

AD7625

更新时间: 2024-11-09 04:04:19
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亚德诺 - ADI /
页数 文件大小 规格书
11页 159K
描述
16-Bit, 6MSPS PulSAR Differential ADC

AD7625 数据手册

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16-Bit, 6MSPS PulSAR  
Differential ADC  
Preliminary Technical Data  
AD7625  
FEATURES  
FUNCTIONAL BLOCK DIAGRAM  
REFIN REF VCM  
Throughput: 6 MSPS  
SAR architecture  
16-bit resolution with no missing codes  
SNR: 92 dB Typ, 90dB Min @ 1MHz  
INL: 1 LSB Typ, 2 LSB Max  
DNL: 0.3 LSB Typ, 1 LSB Max  
Differential input range: 4.096V  
No latency/no pipeline delay (SAR architecture)  
Serial LVDS interface:  
1.2V  
BANDGAP  
VIO  
2
CLOCK  
LOGIC  
IN+  
IN-  
CNV  
CAP DAC  
D
SERIAL  
LVDS  
SAR  
DCO  
CLK  
AD7626  
Self-clocked mode  
Echoed-clock mode  
Figure 1.  
Reference:  
Internal 4.096 V  
External (1.2V) buffered to 4.096 V  
External 4.096 V  
Power dissipation 150 mW  
32-Lead LFCSP package (5 mm x 5 mm)  
GENERAL DESCRIPTION  
The AD7625 is a 16-bit, 6MSPS, charge redistribution successive  
approximation register (SAR) architecture, analog-to-digital  
converter (ADC). SAR architecture allows unmatched  
performance both in noise – 92dB SNR - and in linearity –  
1LSB. The AD7625 contains a high speed 16-bit sampling ADC,  
an internal conversion clock, and an internal buffered reference.  
On the CNV edge, it samples the voltage difference between  
IN+ and IN− pins. The voltages on these pins swing in opposite  
phase between 0 V and REF. The 4.096V reference voltage, REF,  
can be generated internally or applied externally.  
APPLICATIONS  
High dynamic range telecommunications  
Receivers  
Digital imaging systems  
High-speed data acquisition  
Spectrum analysis  
All converted results are available on a single LVDS self-clocked  
or echoed-clock serial interface reducing external hardware  
connections.  
Test equipment  
Table 1. Fast PulSAR ADC Selection  
The AD7625 is housed in a 32-lead LFCSP (5mm by 5mm) with  
operation specified from −40°C to +85°C.  
1 MSPS  
to  
< 2MSPS  
Res  
(Bit  
s)  
2 MSPS  
to  
3 MSPS  
10  
MSPS  
Input Type  
6 MSPS  
Differential  
(ground  
sense)  
16  
AD7653  
AD7667  
AD7980  
AD7983  
AD7985  
True Bipolar  
16  
16  
AD7671  
Differential  
(anti-phase)  
AD7677  
AD7623  
AD7621  
AD7622  
AD7625 AD7626  
Differential  
(anti-phase)  
18  
AD7643  
AD7982  
AD7984  
AD7641  
AD7986  
Rev. PrB  
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. Specifications subject to change without notice. No  
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.  
Trademarks and registeredtrademarks arethe property of their respective owners.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700  
Fax: 781.461.3113  
www.analog.com  
©2008 Analog Devices, Inc. All rights reserved.  

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