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| 型号： | AD5292BRUZ-20-RL7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 20/32页 |
| 文件大小： | 0K |
| 描述： | IC POT DIG 1024P SPI 20K 14TSSOP |
| 设计资源： | 30 V Low Cost DAC Using AD5292 Digital Potentiometer (CN0111) Variable Gain Noninverting Amplifier Using AD5292 and OP184 (CN0112) Variable Gain Inverting Amplifier Using AD5292 and OP184 (CN0113) Low Cost, High Voltage, Programmable Gain Instrumentation Amplifier Using AD5292 and AD8221 (CN0114) Programmable High Voltage Source with Boosted Output Current Using AD5292, OP184, and MOSFETs (CN0115) Programmable Bidirectional Current Source Using AD5292 and ADA4091-4 (CN0117) Logarithmic Audio Volume Control with Glitch Reduction Using AD5292 (CN0120) |
| 标准包装： | 1,000 |
| 接片： | 1024 |
| 电阻（欧姆）： | 20k |
| 电路数： | 1 |
| 温度系数： | 标准值 35 ppm/°C |
| 存储器类型： | 非易失 |
| 接口： | 4 线串行 |
| 电源电压： | 9 V ~ 33 V，±9 V ~ 16.5 V |
| 工作温度： | -40°C ~ 105°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 14-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 14-TSSOP |
| 包装： | 带卷 (TR) |
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AD5291/AD5292
Rev. D | Page 27 of 32
Operation of the digital potentiometer in the voltage divider
mode results in a more accurate operation over temperature.
Unlike the rheostat mode, the output voltage is dependent
mainly on the ratio of the internal resistors, RWA and RWB, and
not the absolute values. Therefore, the temperature drift reduces
to 5 ppm/°C.
The ground pins of the AD5291 and AD5292 devices are
primarily used as a digital ground reference. To minimize the
digital ground bounce, the AD5291 and AD5292 ground
terminals should be joined remotely to the common ground.
The digital input control signals to the AD5291 and AD5292
must be referenced to the device ground pin (GND), and satisfy
the logic level defined in the Specifications section.
EXT_CAP CAPACITOR
Power-Up Sequence
A 1 μF capacitor to GND must be connected to the EXT_CAP
pin (see Figure 68) on power-up and throughout the operation
of the AD5291 and AD5292.
To ensure that the AD5291 and AD5292 power up correctly, a
1 μF capacitor must be connected to the EXT_CAP pin. Because
there are diodes to limit the voltage compliance at Terminal A,
Terminal B, and Terminal W (see Figure 69), it is important to
power VDD and VSS first before applying any voltage to Terminal A,
Terminal B, and Terminal W. Otherwise, the diode is forward-
biased such that VDD and VSS are powered up unintentionally.
The ideal power-up sequence is GND, VSS, VLOGIC and VDD, the
digital inputs, and then VA, VB, and VW. The order of powering
up VA, VB, VW, and the digital inputs is not important as long as
they are powered after VDD, VSS, and VLOGIC.
AD5291/
AD5292
GND
C1
1F
OTP
MEMORY
BLOCK
07
67
4-
0
54
EXT_CAP
Figure 68. Hardware Setup for EXT_CAP Pin
TERMINAL VOLTAGE OPERATING RANGE
Regardless of the power-up sequence and the ramp rates of the
power supplies, after VLOGIC is powered, the power-on preset
activates, restoring the 20-TP memory value to the RDAC register.
The positive VDD and negative VSS power supplies of the
AD5291 and AD5292 define the boundary conditions for
proper 3-terminal digital potentiometer operation. Supply
signals present on Terminal A, Terminal B, and Terminal W
that exceed VDD or VSS are clamped by the internal forward-
biased diodes (see Figure 69).
VSS
VDD
A
W
B
07
67
4-
05
5
Figure 69. Maximum Terminal Voltages Set by VDD and V SS
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD5292BRUZ-50 | 功能描述:IC DGTL POT 1024POS 20K 14TSSOP 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 |
| AD5292BRUZ-50-RL7 | 功能描述:IC DGTL POT 1024POS 20K 14TSSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 数字电位器 系列:- 标准包装:3,000 系列:DPP 接片:32 电阻（欧姆）:10k 电路数:1 温度系数:标准值 300 ppm/°C 存储器类型:非易失 接口:3 线串行（芯片选择，递增，增/减） 电源电压:2.5 V ~ 6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-WFDFN 裸露焊盘 供应商设备封装:8-TDFN（2x3） 包装:带卷 (TR) |
| AD5292SRU-20-EP | 制造商:Analog Devices 功能描述:1024 TAP, 1% DIGIPOT WITH SPI INTERFACE - Rail/Tube 制造商:Analog Devices 功能描述:IC DGTL POT 1024POS 20K 14TSSOP 制造商:Analog Devices 功能描述:1024 tap 1% digiPOT with SPI interface |
| AD5292SRUZ-20-EP | 功能描述:IC DGTL POT 1024POS 20K 14TSSOP 制造商:analog devices inc. 系列:* 零件状态:在售 标准包装:96 |
| AD5293 | 制造商:AD 制造商全称:Analog Devices 功能描述:Single-Channel, 1024-Position, 1% R-Tolerance Digital Potentiometer |
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