Datasheet > AD5293BRUZ-20

AD5293BRUZ-20

更新时间： 2024-02-28 03:19:09

品牌	Logo	应用领域
亚德诺 - ADI		数字电位计
页数	文件大小	规格书
20页	687K
描述
Single-Channel, 1024-Position, 1% R-Tolerance Digital Potentiometer

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技术参数
数据手册
替代型号

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AD5293BRUZ-20 技术参数

是否无铅：	含铅	是否Rohs认证：	符合
生命周期：	Active	零件包装代码：	TSSOP
包装说明：	TSSOP, TSSOP14,.25	针数：	14
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	1.72
其他特性：	DEVICE SUPPORTS DUAL SUPPLY OPERATION	标称带宽：	0.52 kHz
控制接口：	3-WIRE SERIAL	转换器类型：	DIGITAL POTENTIOMETER
JESD-30 代码：	R-PDSO-G14	JESD-609代码：	e3
长度：	5 mm	湿度敏感等级：	1
标称负供电电压：	-15 V	功能数量：	1
位置数：	1024	端子数量：	14
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：	TSSOP14,.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：	+-10.5/+-16.5/21/33 V	认证状态：	Not Qualified
电阻定律：	LINEAR	最大电阻容差：	1%
最大电阻器端电压：	16.5 V	最小电阻器端电压：	-9 V
座面最大高度：	1.2 mm	子类别：	Digital Potentiometers
标称供电电压：	15 V	表面贴装：	YES
技术：	CMOS	标称温度系数：	35 ppm/ °C
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
标称总电阻：	20000 Ω	宽度：	4.4 mm
Base Number Matches：	1

AD5293BRUZ-20 数据手册

AD5293

If ignoring the effect of the wiper resistance for simplicity,

connecting the A terminal to 30 V and the B terminal to ground

produces an output voltage at the Wiper W to Terminal B that

ranges from 0 V to 30 V − 1 LSB. Each LSB of voltage is equal to

the voltage applied across the A terminal and B terminal, divided

by the 1024 positions of the potentiometer divider. The general

equation defining the output voltage at V_W, with respect to

ground for any valid input voltage applied to Terminal A and

Terminal B, is

TERMINAL VOLTAGE OPERATING RANGE

The positive V_DDand negative V_SSpower supplies of the AD5293

define the boundary conditions for proper 3-terminal, digital

potentiometer operation. Supply signals present on the A, B,

and W terminals that exceed V_DDor V_SSare clamped by the

internal forward-biased diodes (see Figure 37).

1024

1024 − D

1024

V_W(D) =

×V_A+

×V_B

(3)

To optimize the wiper position update rate when in voltage

divider mode, it is recommended that the internal 1% resistor

tolerance calibration feature be disabled by programming Bit C2

of the control register (see Table 9 and Table 10).

Operation of the digital potentiometer in the divider mode

results in a more accurate operation over temperature. Unlike

when the part is in the rheostat mode, the output voltage is

dependent mainly on the ratio of the internal resistors, R_WAand

R_WB, not on the absolute values. Therefore, the temperature drift

reduces to 5 ppm/°C.

Figure 37. Maximum Terminal Voltages Set by V_DDand V_SS

The ground pin of the AD5293 is primarily used as a digital

ground reference. To minimize the digital ground bounce, the

AD5293 ground pin should be joined remotely to common

ground. The digital input control signals to the AD5293 must be

referenced to the device ground pin (GND) to satisfy the logic

level defined in the Specifications section.

EXT_CAP CAPACITOR

A 1 μF capacitor to GND must be connected to the EXT_CAP

pin (see Figure 36) on power-up and throughout the operation

of the AD5293. This capacitor must have a voltage rating of ≥7 V.

Power-Up Sequence

Because there are diodes to limit the voltage compliance at the

A, B, and W terminals (see Figure 37), it is important to power

AD5293

_DDand V_SSfirst, before applying any voltage to the A, B, and W

EXT_CAP

1µF

terminals. Otherwise, the diode is forward-biased such that V_DD

and V_SSare powered up unintentionally. The ideal power-up

sequence is GND, V_SS, V_LOGIC, V_DD, the digital inputs, and then

V_A, V_B, and V_W. The order of powering up V_A, V_B, V_W, and the

digital inputs is not important, as long as they are powered after

GND

Figure 36. Hardware Setup for the EXT_CAP Pin

V_DD, V_SS, and V_LOGIC

Regardless of the power-up sequence and the ramp rates of the

power supplies, the power-on preset activates after V_LOGICis

powered, restoring midscale to the RDAC register.

Rev. 0 | Page 17 of 20

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AD5293BRUZ-20 替代型号

型号	品牌	替代类型	描述	数据表
AD5293BRUZ-20-RL7	ADI	类似代替	Single-Channel, 1024-Position, 1% R-Tolerance Digital Potentiometer

与AD5293BRUZ-20相关器件

型号	品牌	获取价格	描述	数据表
AD5293BRUZ-20-RL7	ADI	获取价格	Single-Channel, 1024-Position, 1% R-Tolerance Digital Potentiometer
AD5293BRUZ-50	ADI	获取价格	Single-Channel, 1024-Position, 1percent R-Tolerance Digital Potentiometer
AD5293BRUZ-50-RL7	ADI	获取价格	Single-Channel, 1024-Position, 1percent R-Tolerance Digital Potentiometer
AD52X1B	ADI	获取价格	12 BIT SUCCESSIVE APPROXIMATION HIGH ACCURACY A/D CONVERTERS
AD52X1T	ADI	获取价格	12 BIT SUCCESSIVE APPROXIMATION HIGH ACCURACY A/D CONVERTERS
AD52X2B	ADI	获取价格	12 BIT SUCCESSIVE APPROXIMATION HIGH ACCURACY A/D CONVERTERS
AD52X2T	ADI	获取价格	12 BIT SUCCESSIVE APPROXIMATION HIGH ACCURACY A/D CONVERTERS
AD52X5B	ADI	获取价格	12 BIT SUCCESSIVE APPROXIMATION HIGH ACCURACY A/D CONVERTERS
AD52X5T	ADI	获取价格	12 BIT SUCCESSIVE APPROXIMATION HIGH ACCURACY A/D CONVERTERS
AD53/009-9	ADI	获取价格	GSM Baseband Processing Chipset

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