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AD5336

更新时间： 2024-02-05 14:57:40
品牌 Logo 应用领域
亚德诺 - ADI /
页数 文件大小 规格书
20页 352K
描述
2.5 V to 5.5 V, 115 uA, Parallel Interface Single Voltage-Output 8-/10-/12-Bit DACs

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AD5336 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Obsolete零件包装代码：TSSOP
包装说明：TSSOP-28针数：24
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.44
最大模拟输出电压：2.999 V最小模拟输出电压：0.001 V
转换器类型：D/A CONVERTER输入位码：BINARY
输入格式：PARALLEL, 8 BITSJESD-30 代码：R-PDSO-G24
JESD-609代码：e3长度：9.7 mm
最大线性误差 (EL)：0.3906%湿度敏感等级：1
位数：10功能数量：4
端子数量：24最高工作温度：105 °C
最低工作温度：-40 °C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）：260电源：2.5/5.5 V
认证状态：Not Qualified座面最大高度：1.2 mm
最大稳定时间：9 µs标称安定时间 (tstl)：7 µs
子类别：Other Converters最大压摆率：0.9 mA
标称供电电压：3 V表面贴装：YES
技术：CMOS温度等级：INDUSTRIAL
端子面层：Matte Tin (Sn)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：40宽度：4.4 mm

AD5336 数据手册

 浏览型号AD5336的Datasheet PDF文件第14页浏览型号AD5336的Datasheet PDF文件第15页浏览型号AD5336的Datasheet PDF文件第16页浏览型号AD5336的Datasheet PDF文件第17页浏览型号AD5336的Datasheet PDF文件第19页浏览型号AD5336的Datasheet PDF文件第20页 
AD5330/AD5331/AD5340/AD5341  
Programmable Current Source  
Power Supply Bypassing and Grounding  
Figure 38 shows the AD5330/AD5331/AD5340/AD5341 used  
as the control element of a programmable current source. In this  
example, the full-scale current is set to 1 mA. The output volt-  
age from the DAC is applied across the current setting resistor  
of 4.7 kΩ in series with the 470 Ω adjustment potentiometer,  
which gives an adjustment of about 5%. Suitable transistors to  
place in the feedback loop of the amplifier include the BC107  
and the 2N3904, which enable the current source to operate  
from a minimum VSOURCE of 6 V. The operating range is deter-  
mined by the operating characteristics of the transistor. Suitable  
amplifiers include the AD820 and the OP295, both having rail-  
to-rail operation on their outputs. The current for any digital  
input code and resistor value can be calculated as follows:  
In any circuit where accuracy is important, careful consideration  
of the power supply and ground return layout helps to ensure  
the rated performance. The printed circuit board on which the  
AD5330/AD5331/AD5340/AD5341 is mounted should be  
designed so that the analog and digital sections are separated,  
and confined to certain areas of the board. If the device is in a  
system where multiple devices require an AGND-to-DGND  
connection, the connection should be made at one point only.  
The star ground point should be established as closely as pos-  
sible to the device. The AD5330/AD5331/AD5340/AD5341  
should have ample supply bypassing of 10 µF in parallel with  
0.1 µF on the supply located as close to the package as pos-  
sible, ideally right up against the device. The 10 µF capacitors  
are the tantalum bead type. The 0.1 µF capacitor should have  
low Effective Series Resistance (ESR) and Effective Series Induc-  
tance (ESI), like the common ceramic types that provide a low  
impedance path to ground at high frequencies to handle tran-  
sient currents due to internal logic switching.  
D
I = G × VREF  
×
mA  
(2N × R)  
Where:  
G is the gain of the buffer amplifier (1 or 2)  
The power supply lines of the device should use as large a trace  
as possible to provide low impedance paths and reduce the effects  
of glitches on the power supply line. Fast switching signals such  
as clocks should be shielded with digital ground to avoid radiat-  
ing noise to other parts of the board, and should never be run  
near the reference inputs. Avoid crossover of digital and ana-  
log signals. Traces on opposite sides of the board should run  
at right angles to each other. This reduces the effects of feed-  
through through the board. A microstrip technique is by far  
the best, but not always possible with a double-sided board. In  
this technique, the component side of the board is dedicated to  
ground plane while signal traces are placed on the solder side.  
D is the digital equivalent of the digital input code  
N is the DAC resolution (8, 10, or 12 bits)  
R is the sum of the resistor plus adjustment potentiometer in kΩ  
V
= 5V  
DD  
10␮F  
0.1␮F  
0.1␮F  
V
SOURCE  
V
IN  
LOAD  
5V  
V
DD  
EXT  
REF  
V
V
V
REF  
OUT  
OUT  
AD820/  
OP295  
AD5330/AD5331/  
AD5340/AD5341  
GND  
AD780/REF192  
WITH V = 5V  
4.7k⍀  
470⍀  
DD  
GND  
Figure 38. Programmable Current Source  
–18–  
REV. 0  
1...151617181920

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