Datasheet > AD5293BRUZ-20

AD5293BRUZ-20

更新时间： 2024-02-28 14:38:59

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

The digitally programmed output resistance between the W

terminal and the A terminal, R_WA, and the W terminal and

B terminal, R_WB, is calibrated to give a maximum of 1%

absolute resistance error over both the full supply and

temperature ranges. As a result, the general equation for

determining the digitally programmed output resistance

between the W terminal and B terminal is

RDAC ARCHITECTURE

To achieve optimum cost performance, Analog Devices, Inc., has

patented the RDAC segmentation architecture for all the digital

potentiometers. In particular, the AD5293 employs a three-stage

segmentation approach, as shown in Figure 33. The AD5293 wiper

switch is designed with transmission gate CMOS topology and

with the gate voltage derived from V_DD

R_WB(D) =

×R_AB

(1)

1024

where:

D is the decimal equivalent of the binary code loaded in the

10-bit RDAC register.

_ABis the end-to-end resistance.

Similar to the mechanical potentiometer, the resistance of the

RDAC between the W terminal and the A terminal also

produces a digitally controlled complementary resistance, R_WA.

R_WAis also calibrated to give a maximum of 1% absolute

resistance error. R_WAstarts at the maximum resistance value and

decreases as the data loaded into the latch increases. The

general equation for this operation is

10-BIT

ADDRESS

DECODER

1024 − D

1024

R_WA(D) =

×R_AB

(2)

where:

D is the decimal equivalent of the binary code loaded in the

10-bit RDAC register.

_ABis the end-to-end resistance.

In the zero-scale condition, a finite total wiper resistance of 120 Ω

is present. Regardless of the setting in which the part is operating,

care should be taken to limit the current between the A terminal

and B terminal, the W terminal and A terminal, and the W termi-

nal and B terminal to the maximum continuous current of 3 mA

or to the pulse current specified in Table 4. Otherwise, degradation,

or possible destruction of the internal switch contact, can occur.

Figure 33. Simplified RDAC Circuit

PROGRAMMING THE VARIABLE RESISTOR

Rheostat Operation—1% Resistor Tolerance

The AD5293 operates in rheostat mode when only two termi-

nals are used as a variable resistor. The unused terminal can be

left floating or can be tied to the W terminal as shown in Figure 34.

PROGRAMMING THE POTENTIOMETER DIVIDER

Voltage Output Operation

The digital potentiometer easily generates a voltage divider at the

wiper-to-B terminal and the wiper-to-A terminal that is pro-

portional to the input voltage at A to B, as shown in Figure 35.

Unlike the polarity of V_DDto GND, which must be positive,

voltage across A to B, W to A, and W to B can be at either

polarity.

Figure 34. Rheostat Mode Configuration

The nominal resistance between Terminal A and Terminal B,

R_AB, is available in 20 kΩ and has 1024 tap points that are

accessed by the wiper terminal. The 10-bit data in the RDAC

latch is decoded to select one of the 1024 possible wiper settings.

The AD5293 contains an internal 1% resistor tolerance cali-

bration feature that can be enabled or disabled (enabled by

default) by programming Bit C2 of the control register (see

Table 9 and Table 10).

OUT

Figure 35. Potentiometer Mode Configuration

Rev. 0 | Page 16 of 20

1...13 14 151617 18 19 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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