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AD9235BRURL7-65 PDF预览

AD9235BRURL7-65

更新时间: 2024-10-28 12:34:19
品牌 Logo 应用领域
亚德诺 - ADI 转换器
页数 文件大小 规格书
40页 838K
描述
12-Bit, 20/40/65 MSPS 3 V A/D Converter

AD9235BRURL7-65 数据手册

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12-Bit, 20/40/65 MSPS  
3 V A/D Converter  
AD9235  
Data Sheet  
FEATURES  
FUNCTIONAL BLOCK DIAGRAM  
AVDD  
DRVDD  
Single 3 V supply operation (2.7 V to 3.6 V)  
SNR = 70 dBc to Nyquist at 65 MSPS  
SFDR = 85 dBc to Nyquist at 65 MSPS  
Low power: 300 mW at 65 MSPS  
Differential input with 500 MHz bandwidth  
On-chip reference and SHA  
VIN+  
VIN–  
8-STAGE  
1 1/2-BIT  
PIPELINE  
SHA  
A/D  
MDAC1  
4
16  
3
REFT  
REFB  
A/D  
DNL = 0.4 LSB  
CORRECTION LOGIC  
12  
Flexible analog input: 1 V p-p to 2 V p-p range  
Offset binary or twos complement data format  
Clock duty cycle stabilizer  
OUTPUT BUFFERS  
OTR  
D11  
AD9235  
VREF  
D0  
CLOCK  
DUTY CYCLE  
STABILIZER  
APPLICATIONS  
Ultrasound equipment  
IF sampling in communications receivers  
IS-95, CDMA-One, IMT-2000  
Battery-powered instruments  
Hand-held scopemeters  
MODE  
SELECT  
SENSE  
REF  
SELECT  
0.5V  
AGND  
CLK  
PDWN  
MODE  
DGND  
Figure 1.  
Low cost digital oscilloscopes  
GENERAL DESCRIPTION  
can be used with the most significant bit to determine low or  
high overflow.  
The AD9235 is a family of monolithic, single 3 V supply, 12-bit,  
20/40/65 MSPS analog-to-digital converters (ADCs). This  
family features a high performance sample-and-hold amplifier  
(SHA) and voltage reference. The AD9235 uses a multistage  
differential pipelined architecture with output error correction  
logic to provide 12-bit accuracy at 20/40/65 MSPS data rates  
and guarantee no missing codes over the full operating  
temperature range.  
Fabricated on an advanced CMOS process, the AD9235 is avail-  
able in a 28-lead TSSOP and a 32-lead LFCSP and is specified  
over the industrial temperature range (–40°C to +85°C).  
PRODUCT HIGHLIGHTS  
1. The AD9235 operates from a single 3 V power supply and  
features a separate digital output driver supply to accommo-  
date 2.5 V and 3.3 V logic families.  
2. Operating at 65 MSPS, the AD9235 consumes a low 300 m W.  
3. The patented SHA input maintains excellent performance for  
input frequencies up to 100 MHz and can be configured for  
single-ended or differential operation.  
4. The AD9235 pinout is similar to the AD9214-65, a 10-bit,  
65 MSPS ADC. This allows a simplified upgrade path from  
10 bits to 12 bits for 65 MSPS systems.  
The wide bandwidth, truly differential SHA allows a variety of  
user-selectable input ranges and offsets including single-ended  
applications. It is suitable for multiplexed systems that switch  
full-scale voltage levels in successive channels and for sampling  
single-channel inputs at frequencies well beyond the Nyquist rate.  
Combined with power and cost savings over previously available  
ADCs, the AD9235 is suitable for applications in communica-  
tions, imaging, and medical ultrasound.  
5. The clock DCS maintains overall ADC performance over a  
wide range of clock pulse widths.  
6. The OTR output bit indicates when the signal is beyond the  
selected input range.  
A single-ended clock input is used to control all internal  
conversion cycles. A duty cycle stabilizer (DCS) compensates  
for wide variations in the clock duty cycle while maintaining  
excellent overall ADC performance. The digital output data is  
presented in straight binary or twos complement formats. An  
out-of-range (OTR) signal indicates an overflow condition that  
Rev. D  
Information furnishedby Analog Devices is believedto be accurate andreliable. However, nore-  
sponsibility is assumed by Analog Devices for its use, nor for anyinfringements of patentsor other  
rightsofthird partiesthat may result from its use. Specifications subject to change without notice. No  
license isgrantedbyimplication or otherwise under anypatent or patent rights of Analog Devices.  
Trademarks andregisteredtrademarks are the 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  
©2012 Analog Devices, Inc. All rights reserved.  

AD9235BRURL7-65 替代型号

型号 品牌 替代类型 描述 数据表
AD9235BRUZ-65 ADI

完全替代

12-Bit, 20/40/65 MSPS 3 V A/D Converter
AD9235BRUZRL7-65 ADI

完全替代

12-Bit, 20/40/65 MSPS 3 V A/D Converter
AD9235BRU-65 ADI

完全替代

12-Bit, 20/40/65 MSPS 3 V A/D Converter

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