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AD7936

更新时间： 2023-12-18 00:00:00
品牌 Logo 应用领域
亚德诺 - ADI 光电二极管转换器
页数 文件大小 规格书
22页 294K
描述
IC 8-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO28, TSSOP-28, Analog to Digital Converter

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AD7936 技术参数

是否Rohs认证： 不符合生命周期：Obsolete
零件包装代码：SSOP包装说明：TSSOP-28
针数：28Reach Compliance Code：not_compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.92最大模拟输入电压：2.5 V
最小模拟输入电压：最长转换时间：0.6 µs
转换器类型：ADC, SUCCESSIVE APPROXIMATIONJESD-30 代码：R-PDSO-G28
JESD-609代码：e0长度：9.7 mm
最大线性误差 (EL)：0.0244%模拟输入通道数量：8
位数：12功能数量：1
端子数量：28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, 8 BITS封装主体材料：PLASTIC/EPOXY
封装代码：TSSOP封装等效代码：TSSOP28,.25
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）：NOT SPECIFIED电源：3/5 V
认证状态：Not Qualified采样速率：1.5 MHz
采样并保持/跟踪并保持：TRACK座面最大高度：1.1 mm
子类别：Analog to Digital Converters标称供电电压：3 V
表面贴装：YES温度等级：INDUSTRIAL
端子面层：Tin/Lead (Sn/Pb)端子形式：GULL WING
端子节距：0.65 mm端子位置：DUAL
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：4.4 mm
Base Number Matches：1

AD7936 数据手册

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PRELIMINARYTECHNICAL DATA  
8-Channel, 1.5 MSPS, 12- & 10-Bit  
a
Parallel ADCs with a Sequencer  
AD7936/AD7935  
FUNCTIONAL BLOCK DIAGRAM  
FEATURES  
Fast Throughput Rate: 1.5 MSPS  
Specified for VDD of 2.7 V to 5.25 V  
Low Power:  
VDD  
AGND  
AD7936/AD7935  
V
V
/
REFIN  
REFOUT  
8 mW max at 1.5 MSPS with 3V Supplies  
16 mW max at 1.5 MSPS with 5V Supplies  
8 Analog Input Channels with a Sequencer  
Software Configurable Analog Inputs:  
8-Channel Single Ended Inputs  
4-Channel Fully Differential Inputs  
4-Channel Pseudo Differential Inputs  
7-Channel Pseudo Differential Inputs  
Accurate On-chip 2.5 V Reference  
Wide Input Bandwidth:  
2.5 V  
VREF  
V
0
IN  
12-/10-BIT  
SAR ADC  
AND  
CLKIN  
I/P  
T/H  
MUX  
CONVST  
BUSY  
V
7
IN  
CONTROL  
SEQUENCER  
70dB SNR at 50kHz Input Frequency  
No Pipeline Delays  
PARALLEL INTERFACE/CONTROL REGISTER  
VDRIVE  
High Speed Parallel Interface operating in  
Byte format  
Full Shutdown Mode: 1  
28-Lead TSSOP Package  
µA max  
D0  
CS RD WR  
DGND  
D7  
W/B  
GENERAL DESCRIPTION  
These parts use advanced design techniques to achieve  
very low power dissipation at high throughput rates. They  
also feature flexible power management options.  
The AD7936/AD7935 are 12- & 10-bit, high speed,  
low power, successive approximation (SAR) 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, differ-  
ential track/hold amplifier that can handle input  
frequencies up to 20MHz.  
An on-chip Control register allows the user to set up dif-  
ferent operating conditions including analog input range  
and configuration, output coding, power management and  
channel sequencing.  
PRODUCT HIGHLIGHTS  
The AD7936/AD7935 feature 8 analog input channels  
with a channel sequencer to allow a pre-programmed  
selection of channels to be converted sequentially.  
These parts can operate with either Single-ended, Fully  
Differential or Pseudo Differential analog inputs. The  
analog input configuration is chosen by setting the rel-  
evant bits in the on-chip Control Register.  
1. High Throughput with Low Power Consumption  
The AD7936/AD7935 offer 1.5 MSPS throughput  
with 8mW power consumption at VDD = 3V.  
2. Eight Analog Inputs with a Channel Sequencer.  
A sequence of input channels can be selected, through  
which the AD7936/AD7935 will continuously cycle and  
convert on.  
The conversion process and data acquisition are con-  
trolled using standard control inputs allowing easy  
interfacing to Microprocessors and Dsps. The input  
signal is sampled on the falling edge of CONVST and  
the conversion is also initiated at this point.  
3. Accurate on-chip 2.5 V reference.  
4. Software Configurable Analog Inputs  
Single-Ended, Pseudo Differential or Fully Differential  
analog inputs that are software selectable.  
The AD7936/AD7935 has 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 in  
the range 100mV to 3.5 V.  
5. Single-supply Operation with VDRIVE Function.  
The AD7936/AD7935 operates from a single 2.7 V to  
5.25 V supply. The VDRIVE function allows the parallel  
interface to connect directly to either 3V or 5 V proces  
sor systems independent of VDD  
.
6. No Pipeline Delay  
The parts feature a standard successive-approximation  
ADC with accurate control of the sampling instant via a  
CONVST input and once off conversion control.  
REV.PrA 03/03  
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  
which may result from its use. No license is granted by implication or  
otherwise under any patent or patent rights of Analog Devices.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106,U.S.A.  
Tel: 781/329-4700 World Wide Web Site: http://www.analog.com  
Fax: 781/326-8703  
© Analog Devices, Inc., 2003  
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