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参数资料
| 型号： | AD5273BRJ50-REEL7 |
| 厂商： | ANALOG DEVICES INC |
| 元件分类： | 数字电位计 |
| 英文描述： | 64-Position OTP Digital Potentiometer |
| 中文描述： | 50K DIGITAL POTENTIOMETER, 2-WIRE SERIAL CONTROL INTERFACE, 64 POSITIONS, PDSO8 |
| 封装： | MO-178BA, SOT-23, 8 PIN |
| 文件页数： | 15/20页 |
| 文件大小： | 987K |
| 代理商： | AD5273BRJ50-REEL7 |
AD5273
–15–
CONTROLLING TWO DEVICES ON ONE BUS
Figure 12 shows two AD5273 devices on the same serial bus.
Each has a different slave address since the state of each AD0
pin is different. This allows each device to operate independently.
The master device output bus line drivers are open-drain pull
downs in a fully I
2
C compatible interface.
MASTER
SDA SCL
AD0
AD5273
SDA SCL
AD0
AD5273
SDA
SCL
5V
Rp
Rp
5V
Figure 12. Two AD5273 Devices on One Bus
APPLICATIONS
Programmable Voltage Reference
For Voltage Divider mode operation, as shown in Figure 13, it is
common to buffer the output of the digital potentiometer unless
the load is much larger than R
WB
. Not only does the buffer serve
the purpose of impedance conversion, it also allows a heavier
load to be driven.
I
2
C Controller Programming
Write Bit Pattern Illustrations
SDA
FRAME 1
SLAVE ADDRESS BYTE
FRAME 2
INSTRUCTION BYTE
FRAME 1
DATA BYTE
SCL
ACK. BY
AD5273
ACK. BY
AD5273
ACK. BY
AD5273
STOP BY
MASTER
START BY
MASTER
0
0
1
0
1
1
0
AD0 R/
W
0
X
X
X
X
X
X
X
X
X
D5
D4
D3
D2
D1
D0
8
0
8
0
8
Figure 10a. Writing to the RDAC Register
SDA
FRAME 1
SLAVE ADDRESS BYTE
FRAME 2
INSTRUCTION BYTE
FRAME 1
DATA BYTE
SCL
ACK. BY
AD5273
ACK. BY
AD5273
ACK. BY
AD5273
STOP BY
MASTER
START BY
MASTER
0
0
1
0
1
1
0
AD0 R/
W
1
X
X
X
X
X
X
X
X
X
D5
D4
D3
D2
D1
D0
8
0
8
0
8
Figure 10b. Activating One Time Programming
Read Bit Pattern Illustration
SDA
FRAME 1
SLAVE ADDRESS BYTE
FRAME 2
DATA BYTE FROM SELECTED
RDAC REGISTER
SCL
ACK. BY
AD5273
NO ACK. BY
MASTER
STOP BY
MASTER
START BY
MASTER
0
0
1
0
1
1
0
AD0
E1
E0
D5
D4
D3
D2
D1
D0
8
0
8
R/
W
Figure 11. Reading Data From the RDAC Register
GND
V
IN
V
OUT
1
U1
5V
2
3
V
O
AD8601
5V
AW
B
ADR03
U3
AD5273
U2
Figure 13. Programmable Voltage Reference
Programmable Voltage Source with Boosted Output
For applications that require high current adjustment such as a
laser diode driver or tunable laser, a boosted voltage source can
be considered. See Figure 14.
+V
U2
W
SIGNAL
C
C
R
BIAS
LD
V
IN
A
B
V
OUT
U1
AD5273
U3 2N7002
AD8601
–V
I
L
Figure 14. Programmable Booster Voltage Source
In this circuit, the inverting input of the op amp forces the V
OUT
to be equal to the wiper voltage set by the digital potentiometer.
The load current is then delivered by the supply via the N-Ch
REV. 0
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD5273BRJZ100-R2 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Analog Devices 功能描述: |
| AD5273BRJZ100-R7 | 功能描述:IC POT DGTL 1K 64POS SOT23 RoHS:是 类别:集成电路 (IC) >> 数据采集 - 数字电位器 系列:- 标准包装:3,300 系列:WiperLock™ 接片:257 电阻（欧姆）:100k 电路数:1 温度系数:标准值 150 ppm/°C 存储器类型:易失 接口:3 线 SPI（芯片选择） 电源电压:1.8 V ~ 5.5 V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:8-VDFN 裸露焊盘 供应商设备封装:8-DFN-EP（3x3） 包装:带卷 (TR) |
| AD5273BRJZ10-R2 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Analog Devices 功能描述: |
| AD5273BRJZ10-R7 | 功能描述:IC DGTL POT 64P 10K OTP SOT23-8 RoHS:是 类别:集成电路 (IC) >> 数据采集 - 数字电位器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- 接片:256 电阻（欧姆）:100k 电路数:1 温度系数:标准值 35 ppm/°C 存储器类型:非易失 接口:3 线串口 电源电压:2.7 V ~ 5.25 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-WDFN 裸露焊盘 供应商设备封装:8-TDFN-EP（3x3） 包装:剪切带 (CT) 产品目录页面:1399 (CN2011-ZH PDF) 其它名称:MAX5423ETA+TCT |
| AD5273BRJZ1-R2 | 功能描述:IC POT DGTL 1K 64POS SOT23 制造商:analog devices inc. 系列:- 包装:带卷（TR） 零件状态:Digi-Key 停止供應 圆锥:线性 配置:电位计 电路数:1 抽头数:64 电阻（欧姆）:1k 接口:I2C 存储器类型:OTP 电压 - 电源:2.7 V ~ 5.5 V 特性:可选地址 容差:±30% 温度系数（典型值）:300 ppm/°C 电阻 -?游标（欧姆）（典型值）:60 工作温度:-40°C ~ 105°C 封装/外壳:SOT-23-8 供应商器件封装:SOT-23-8 标准包装:250 |
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