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参数资料
| 型号： | AD8842AR |
| 厂商： | ANALOG DEVICES INC |
| 元件分类： | DAC |
| 英文描述： | 8-Bit Octal, 4-Quadrant Multiplying, CMOS TrimDAC |
| 中文描述： | OCTAL, SERIAL INPUT LOADING, 5.4 us SETTLING TIME, 8-BIT DAC, PDSO24 |
| 封装： | 0.300 INCH, SOIC-24 |
| 文件页数： | 11/12页 |
| 文件大小： | 506K |
| 代理商： | AD8842AR |
AD8842
REV. 0
–11–
Figure 32 shows a three-wire interface for a single AD8842 that
easily cascades for multiple packages. This circuit topology often
called daisy chaining requires preformating all the serial data for
each package in the chain. In the case of the 3 packages shown a
36 bit data word must be completely clocked into all the
AD8842 serial data input registers then the LD strobe would
transfer the data bits into the DAC registers updating one DAC
in each package.
Figure 32. Three-Wire Interface Updates Multiple
AD8842s
Figure 31. Addressing Multiple AD8842 Packages
There is some digital feedthrough from the digital input pins.
Operating the clock only when the DAC registers require updat-
ing minimizes the effect of the digital feedthrough on the analog
signal channels. Measurements of DAC switch feedthrough
shown in the electrical characteristics table were accomplished
by grounding the V
IN
x inputs and cycling the data codes be-
tween all zeros and all ones. Under this condition 5 nV-s of
feedthrough was measured on the output of the switched DAC
channel. An adjacent channel measured less than 1 nV-s of digi-
tal crosstalk. The digital feedthrough and crosstalk photographs
shown in the typical performance characteristics section display
these characteristics (Figures 15 and 17).
AD8842
#2
LD
CLK
SDI
AD8842
#1
LD
CLK
SDI
AD8842
#N
LD
CLK
SDI
CLOCK
DATA
CODED
PACKAGE
ADDRESS
WR
ADDRESSS
DECODE
EN
ANALOG CONNECTIONS OMITTED FOR CLARITY
μ
C
PA0
PA1
PA2
DATA
CLOCK
LD
DAC A
SDI
CLK
AD8842 #1
LD
SDO
DAC H
DAC A
SDI
CLK
AD8842 #2
LD
SDO
DAC H
DAC A
SDI
CLK
AD8842 #3
LD
SDO
DAC H
V
OU
V
O
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| AD892TJP | Typical Charactoristics |
相关代理商/技术参数 |
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| AD8842AR-REEL | 功能描述:IC DAC MULT 8BIT OCTAL 24-SOIC RoHS:否 类别:集成电路 (IC) >> 数据采集 - 数模转换器 系列:TrimDAC® 产品培训模块:Data Converter Fundamentals DAC Architectures 标准包装:750 系列:- 设置时间:7µs 位数:16 数据接口:并联 转换器数目:1 电压电源:双 ± 功率耗散（最大）:100mW 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:28-LCC（J 形引线） 供应商设备封装:28-PLCC（11.51x11.51） 包装:带卷 (TR) 输出数目和类型:1 电压，单极；1 电压，双极 采样率（每秒）:143k |
| AD8842ARZ | 功能描述:IC DAC 8BIT OCTAL MULT 24-SOIC RoHS:是 类别:集成电路 (IC) >> 数据采集 - 数模转换器 系列:TrimDAC® 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:50 系列:- 设置时间:4µs 位数:12 数据接口:串行 转换器数目:2 电压电源:单电源 功率耗散（最大）:- 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-TSSOP，8-MSOP（0.118"，3.00mm 宽） 供应商设备封装:8-uMAX 包装:管件 输出数目和类型:2 电压，单极 采样率（每秒）:* 产品目录页面:1398 (CN2011-ZH PDF) |
| AD8842ARZ | 制造商:Analog Devices 功能描述:DAC OCTAL 8BIT 50KHZ QUAD MUL 24SO |
| AD8842ARZ-REEL | 功能描述:IC DAC 8BIT OCTAL 24SOIC RoHS:是 类别:集成电路 (IC) >> 数据采集 - 数模转换器 系列:TrimDAC® 标准包装:47 系列:- 设置时间:2µs 位数:14 数据接口:并联 转换器数目:1 电压电源:单电源 功率耗散（最大）:55µW 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:28-SSOP（0.209"，5.30mm 宽） 供应商设备封装:28-SSOP 包装:管件 输出数目和类型:1 电流，单极；1 电流，双极 采样率（每秒）:* |
| AD8883B | 制造商:AD 制造商全称:Analog Devices 功能描述:60 MHz, 2000 V/us Monolithic Op Amp |
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