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AD5382

更新时间： 2024-02-08 03:41:05
品牌 Logo 应用领域
亚德诺 - ADI /
页数 文件大小 规格书
40页 616K
描述
32-Channel, 3 V/5 V, Single-Supply, 14-Bit, Voltage Output DAC

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AD5382 技术参数

是否Rohs认证： 不符合生命周期：Obsolete
零件包装代码：QFP包装说明：14 X 14 MM, LQFP-100
针数：100Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.85最大模拟输出电压：5.5 V
最小模拟输出电压：转换器类型：D/A CONVERTER
输入位码：BINARY输入格式：PARALLEL, WORD
JESD-30 代码：S-PQFP-G100JESD-609代码：e0
长度：14 mm最大线性误差 (EL)：0.0244%
位数：14功能数量：1
端子数量：100最高工作温度：85 °C
最低工作温度：-40 °C封装主体材料：PLASTIC/EPOXY
封装代码：LFQFP封装形状：SQUARE
封装形式：FLATPACK, LOW PROFILE, FINE PITCH峰值回流温度（摄氏度）：NOT SPECIFIED
认证状态：Not Qualified座面最大高度：1.55 mm
标称安定时间 (tstl)：8 µs标称供电电压：5 V
表面贴装：YES温度等级：INDUSTRIAL
端子面层：TIN LEAD端子形式：GULL WING
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：NOT SPECIFIED宽度：14 mm
Base Number Matches：1

AD5382 数据手册

 浏览型号AD5382的Datasheet PDF文件第32页浏览型号AD5382的Datasheet PDF文件第33页浏览型号AD5382的Datasheet PDF文件第34页浏览型号AD5382的Datasheet PDF文件第36页浏览型号AD5382的Datasheet PDF文件第37页浏览型号AD5382的Datasheet PDF文件第38页 
AD5382  
DATA  
REGISTER  
A
DAC  
REGISTER  
V
14-BIT DAC  
OUT  
DATA  
REGISTER  
B
INPUT  
DATA REGISTER  
INPUT  
LDAC  
CONTROL INPUT  
A/B  
Figure 42. Toggle Mode Function  
+5V  
OUTPUT RANGE  
0–200V  
0.01µF  
REF  
REF  
AVDD  
OUT  
IN  
VO1  
8-CHANNEL ADC  
14-BIT DAC  
G = 50 ACTUATORS  
FOR MEMS  
MIRROR  
(AD7856)  
OR  
SINGLE CHANNEL  
ADC (AD7671)  
SENSOR  
AND  
MULTIPLEXER  
ARRAY  
14-BIT DAC  
G = 50  
VO31  
AD5382  
ADSP-21065L  
Figure 43. AD5382 in a MEMS Based Optical Switch  
THERMAL MONITOR FUNCTION  
AD5382 IN A MEMS BASED OPTICAL SWITCH  
The AD5382 contains a temperature shutdown function to  
protect the chip in case multiple outputs are shorted. The short  
circuit current of each output amplifier is typically 40 mA.  
Operating the AD5382 at 5 V leads to a power dissipation of  
200 mW per shorted amplifier. With five channels shorted, this  
leads to an extra watt of power dissipation. For the 100-lead  
LQFP, the θJA is typically 44°C/W.  
In their feed-forward control paths, MEMS based optical  
switches require high resolution DACs that offer high channel  
density with 14-bit monotonic behavior. The 32-channel, 14-bit  
AD5382 DAC satisfies these requirements. In the circuit in  
Figure 43, the 0 V to 5 V outputs of the AD5382 are amplified to  
achieve an output range of 0 V to 200 V, which is used to control  
actuators that determine the position of MEMS mirrors in an  
optical switch. The exact position of each mirror is measured  
using sensors. The sensor outputs are multiplexed into a high  
resolution ADC in determining the mirror position. The control  
loop is closed and driven by an ADSP-21065L, a 32-bit SHARC®  
DSP with an SPI compatible SPORT interface. The ADSP-  
21065L writes data to the DAC, controls the multiplexer, and  
reads data from the ADC via the serial interface.  
The thermal monitor is enabled by the user via CR8 in the  
control register. The output amplifiers on the AD5382 are  
automatically powered down if the die temperature exceeds  
approximately 130°C. After a thermal shutdown has occurred,  
the user can re-enable the part by executing a soft power-up if  
the temperature has dropped below 130°C or by turning off the  
thermal monitor function via the control register.  
Rev. 0 | Page 35 of 40  
 
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