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AD7938BCP-REEL7

更新时间： 2024-02-11 19:02:08
品牌 Logo 应用领域
亚德诺 - ADI 转换器
页数 文件大小 规格书
36页 561K
描述
IC 8-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, QCC32, MO-220-VHHD-2, LFCSP-32, Analog to Digital Converter

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AD7938BCP-REEL7 技术参数

是否无铅：含铅是否Rohs认证：不符合
生命周期：Active零件包装代码：QFN
包装说明：HVQCCN,针数：32
Reach Compliance Code：unknown风险等级：5.3
Is Samacsys：N最大模拟输入电压：5 V
最小模拟输入电压：转换器类型：ADC, SUCCESSIVE APPROXIMATION
JESD-30 代码：S-XQCC-N32JESD-609代码：e0
长度：5 mm最大线性误差 (EL)：0.0244%
湿度敏感等级：3模拟输入通道数量：8
位数：12功能数量：1
端子数量：32最高工作温度：85 °C
最低工作温度：-40 °C输出位码：BINARY, 2'S COMPLEMENT BINARY
输出格式：PARALLEL, WORD封装主体材料：UNSPECIFIED
封装代码：HVQCCN封装形状：SQUARE
封装形式：CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE峰值回流温度（摄氏度）：240
采样速率：1.5 MHz采样并保持/跟踪并保持：TRACK
座面最大高度：0.9 mm标称供电电压：3 V
表面贴装：YES温度等级：INDUSTRIAL
端子面层：TIN LEAD端子形式：NO LEAD
端子节距：0.5 mm端子位置：QUAD
处于峰值回流温度下的最长时间：30宽度：5 mm
Base Number Matches：1

AD7938BCP-REEL7 数据手册

 浏览型号AD7938BCP-REEL7的Datasheet PDF文件第2页浏览型号AD7938BCP-REEL7的Datasheet PDF文件第3页浏览型号AD7938BCP-REEL7的Datasheet PDF文件第4页浏览型号AD7938BCP-REEL7的Datasheet PDF文件第5页浏览型号AD7938BCP-REEL7的Datasheet PDF文件第6页浏览型号AD7938BCP-REEL7的Datasheet PDF文件第7页 
8-Channel, 1.5 MSPS, 12-Bit and 10-Bit  
Parallel ADCs with a Sequencer  
AD7938/AD7939  
FEATURES  
FUNCTIONAL BLOCK DIAGRAM  
V
AGND  
DD  
Throughput rate: 1.5 MSPS  
Specified for VDD of 2.7 V to 5.25 V  
Power consumption  
AD7938/AD7939  
V
REFIN/  
V
REFOUT  
2.5V  
6 mW maximum at 1.5 MSPS with 3 V supplies  
13.5 mW maximum at 1.5 MSPS with 5 V supplies  
8 analog input channels with a sequencer  
Software-configurable analog inputs  
8-channel single-ended inputs  
VREF  
V
0
IN  
IN  
CLKIN  
CONVST  
BUSY  
12-/10-BIT  
SAR ADC  
AND  
I/P  
MUX  
T/H  
CONTROL  
V
7
4-channel fully differential inputs  
4-channel pseudo differential inputs  
7-channel pseudo differential inputs  
Accurate on-chip 2.5 V reference  
SEQUENCER  
V
PARALLEL INTERFACE/CONTROL REGISTER  
DRIVE  
0.2ꢀ maximum @ 25°C, 25 ppm/°C maximum  
70 dB SINAD at 50 kHz input frequency  
No pipeline delays  
High speed parallel interface—word/byte modes  
Full shutdown mode: 2 μA maximum  
32-lead LFCSP and TQFP packages  
DB0 DB11  
CS RD WR W/B  
DGND  
Figure 1.  
GENERAL DESCRIPTION  
The AD7938/AD7939 are 12-bit and 10-bit, high speed, low  
power, successive approximation (SAR) analog-to-digital  
converters (ADCs). The parts operate from a single 2.7 V to  
5.25 V power supply and feature throughput rates up to  
1.5 MSPS. The parts contain a low noise, wide bandwidth,  
differential track-and-hold amplifier that can handle input  
frequencies up to 50 MHz.  
These parts use advanced design techniques to achieve very  
low power dissipation at high throughput rates. They also  
feature flexible power management options. An on-chip control  
register allows the user to set up different operating conditions,  
including analog input range and configuration, output coding,  
power management, and channel sequencing.  
PRODUCT HIGHLIGHTS  
The AD7938/AD7939 feature eight analog input channels with  
a channel sequencer that allows a preprogrammed selection of  
channels to be converted sequentially. These parts can operate  
with either single-ended, fully differential, or pseudo  
differential analog inputs.  
1. High throughput with low power consumption.  
2. Eight analog inputs with a channel sequencer.  
3. Accurate on-chip 2.5 V reference.  
4. Single-ended, pseudo differential, or fully differential  
analog inputs that are software selectable.  
5. Single-supply operation with VDRIVE function. The VDRIVE  
function allows the parallel interface to connect directly to  
The conversion process and data acquisition are controlled  
using standard control inputs that allow easy interfacing with  
microprocessors and DSPs. The input signal is sampled on the  
3 V or 5 V processor systems independent of VDD  
6. No pipeline delay.  
.
CONVST  
falling edge of  
this point.  
and the conversion is also initiated at  
CONVST  
7. Accurate control of the sampling instant via a  
input and once-off conversion control.  
The AD7938/AD7939 have an accurate on-chip 2.5 V reference  
that can be used as the reference source for the analog-to-digital  
conversion. Alternatively, this pin can be overdriven to provide  
an external reference.  
Table 1. Related Devices  
Device  
No. of Bits  
No. of Channels  
Speed  
AD7933/AD7934 12/10  
4
8
4
1.5 MSPS  
625 kSPS  
625 kSPS  
AD7938-6  
AD7934-6  
12  
12  
Rev. B  
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 www.analog.com  
Fax: 781.461.3113 ©2004–2007 Analog Devices, Inc. All rights reserved.  
 
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AD7938BCP-REEL7 替代型号

型号 品牌 替代类型 描述 数据表
AD7938BCPZ-REEL7 ADI

类似代替

 8-Channel, 1.5 MSPS, 12-Bit and 10-Bit Parallel ADCs with a Sequencer
AD7938BCP-REEL ADI

功能相似

 IC 8-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, QCC32, MO-220-VHHD-2, LFCSP-

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