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| 型号： | AD9238BSTRL-40 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 1/48页 |
| 文件大小： | 0K |
| 描述： | IC ADC 12BIT DUAL 40MSPS 64-LQFP |
| 产品变化通告： | AD9238 Lead Discontinuation 12/Sept/2011 |
| 标准包装： | 2,000 |
| 位数： | 12 |
| 采样率（每秒）： | 40M |
| 数据接口： | 并联 |
| 转换器数目： | 2 |
| 功率耗散（最大）： | 330mW |
| 电压电源： | 单电源 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 64-LQFP |
| 供应商设备封装： | 64-LQFP（7x7） |
| 包装： | 带卷 (TR) |
| 输入数目和类型： | 4 个单端，单极；2 个差分，单极 |
| 配用： | AD9238BCP-65EBZ-ND - BOARD EVAL WITH AD9238BCP-65 |
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12-Bit, 20 MSPS/40 MSPS/65 MSPS
Dual A/D Converter
AD9238
Rev. C
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
registered trademarks 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
www.analog.com
Fax: 781.326.8703 2003–2010 Analog Devices, Inc. All rights reserved.
FEATURES
Integrated dual 12-bit ADC
Single 3 V supply operation (2.7 V to 3.6 V)
SNR = 70 dB (to Nyquist, AD9238-65)
SFDR = 80.5 dBc (to Nyquist, AD9238-65)
Low power: 300 mW/channel at 65 MSPS
Differential input with 500 MHz, 3 dB bandwidth
Exceptional crosstalk immunity > 85 dB
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 datamux option
APPLICATIONS
Ultrasound equipment
Direct conversion or IF sampling receivers
WB-CDMA, CDMA2000, WiMAX
Battery-powered instruments
Hand-held scopemeters
Low cost, digital oscilloscopes
GENERAL DESCRIPTION
The AD9238 is a dual, 3 V, 12-bit, 20 MSPS/40 MSPS/65 MSPS
analog-to-digital converter (ADC). It features dual high
performance sample-and-hold amplifiers (SHAs) and an
integrated voltage reference. The AD9238 uses a multistage
differential pipelined architecture with output error correction
logic to provide 12-bit accuracy and to guarantee no missing
codes over the full operating temperature range at up to
65 MSPS data rates. The wide bandwidth, differential SHA
allows for a variety of user-selectable input ranges and offsets,
including single-ended applications. It is suitable for various
applications, including multiplexed systems that switch full-
scale voltage levels in successive channels and for sampling
inputs at frequencies well beyond the Nyquist rate.
Dual single-ended clock inputs are used to control all internal
conversion cycles. A duty cycle stabilizer is available and can
compensate for wide variations in the clock duty cycle, allowing
the converter to maintain excellent performance. The digital
output data is presented in either straight binary or twos
complement format. Out-of-range signals indicate an overflow
condition, which can be used with the most significant bit to
determine low or high overflow.
FUNCTIONAL BLOCK DIAGRAM
VIN+_A
VIN–_A
REFT_A
REFB_A
VREF
SENSE
AGND
REFT_B
REFB_B
VIN+_B
VIN–_B
OTR_A
D11_A TO D0_A
OEB_A
MUX_SELECT
CLK_A
CLK_B
DCS
SHARED_REF
PWDN_A
PWDN_B
DFS
OTR_B
D11_B TO D0_B
OEB_B
AVDD
AGND
DRVDD DRGND
12
AD9238
12
0.5V
OUTPUT
MUX/
BUFFERS
12
OUTPUT
MUX/
BUFFERS
CLOCK
DUTY CYCLE
STABILIZER
MODE
CONTROL
ADC
SHA
02640-001
ADC
Figure 1.
Fabricated on an advanced CMOS process, the AD9238 is available
in a Pb-free, space saving, 64-lead LQFP or LFCSP and is
specified over the industrial temperature range (40°C to +85°C).
PRODUCT HIGHLIGHTS
1.
Pin-compatible with the AD9248, 14-bit 20MSPS/
40 MSPS/65 MSPS ADC.
2.
Speed grade options of 20 MSPS, 40 MSPS, and 65 MSPS
allow flexibility between power, cost, and performance to
suit an application.
3.
Low power consumption: AD9238-65: 65 MSPS = 600 mW,
AD9238-40: 40 MSPS = 330 mW, and AD9238-20: 20 MSPS =
180 mW.
4.
Typical channel isolation of 85 dB @ fIN = 10 MHz.
5.
The clock duty cycle stabilizer (AD9238-20/AD9238-40/
AD9238-65) maintains performance over a wide range of
clock duty cycles.
6.
Multiplexed data output option enables single-port operation
from either Data Port A or Data Port B.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD9238BSTRL-65 | 功能描述:IC ADC 12BIT DUAL 65MSPS 64-LQFP RoHS:否 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 位数:12 采样率（每秒）:3M 数据接口:- 转换器数目:- 功率耗散（最大）:- 电压电源:- 工作温度:- 安装类型:表面贴装 封装/外壳:SOT-23-6 供应商设备封装:SOT-23-6 包装:带卷 (TR) 输入数目和类型:- |
| AD9238BSTZ-20 | 功能描述:IC ADC 12BIT DUAL 20MSPS 64-LQFP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1 系列:microPOWER™ 位数:8 采样率（每秒）:1M 数据接口:串行，SPI? 转换器数目:1 功率耗散（最大）:- 电压电源:模拟和数字 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:24-VFQFN 裸露焊盘 供应商设备封装:24-VQFN 裸露焊盘（4x4） 包装:Digi-Reel® 输入数目和类型:8 个单端，单极 产品目录页面:892 (CN2011-ZH PDF) 其它名称:296-25851-6 |
| AD9238BSTZ-20EB | 制造商:AD 制造商全称:Analog Devices 功能描述:12-Bit, 20 MSPS/40 MSPS/65 MSPS Dual A/D Converter |
| AD9238BSTZ-40 | 功能描述:IC ADC 12BIT DUAL 40MSPS 64-LQFP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1 系列:microPOWER™ 位数:8 采样率（每秒）:1M 数据接口:串行，SPI? 转换器数目:1 功率耗散（最大）:- 电压电源:模拟和数字 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:24-VFQFN 裸露焊盘 供应商设备封装:24-VQFN 裸露焊盘（4x4） 包装:Digi-Reel® 输入数目和类型:8 个单端，单极 产品目录页面:892 (CN2011-ZH PDF) 其它名称:296-25851-6 |
| AD9238BSTZ-40 | 制造商:Analog Devices 功能描述:IC 12-BIT ADC |
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