Digital Potentiometers (POTs) | CAT5138

数字电位计 (POT)，128 抽头，I2C 接口

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CAT5136、CAT5137 和 CAT5138 为数字 POT 系列，采用多种配置，功能与机械电位计相似。127 个相同电阻元件之间的抽头点通过 CMOS 开关联接弧刷输出。这些开关通过 I2C 串行总线，由一个 7 位弧刷控制寄存器 (WCR) 控制。CAT5136 配置为可变电阻。CAT5137 和 CAT5138 为电阻分压器，电位计的一个端子接地。CAT5137 和 CAT5138 具有不同的器件 ID，因此可同时在一个 I2C 总线上使用。通电之后，该 WCR 设置到中间刻度 (1000000)。

  • LCD Screen Adjustment
  • Volume Control
  • Mechanical Potentiometer Replacement
  • Gain Adjustment
  • Line Impedance Matching
  • VCOM Setting Adjustments

  • Industrial Equipment

  • Single Linear digital POT with 128 Taps
  • End-to-End Resistance of 10 kΩ, 50 kΩ and 100 kΩ
  • I2C Interface
  • Wiper goes to Midscale at Power-up
  • Digital Supply Range (VDD): 2.7 V to 5.5 V
  • Low Standby Current
  • Industrial Temperature Range: -40°C to +85°C

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MSL Type

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# of Pots

# of Taps

Type

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VH Max (V)

Wiper Position Memory

VDD Max (V)

Reference Price

CAT5138SDI-10GT3

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CAD Model

Pb

A

H

P

SC-88-6 / SC-70-6 / SOT-363-6

419AD

1

260

REEL

3000

N

1

128

Potentiometer

I2C

10

VCC

No

5.5

$0.2471

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可靠性数据

Die Related Summary Data

Device: CAT5138SDI-10GT3

Equivalent to wafer fab process: CMOS SUB

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等效器件小时

平均故障间隔时间/平均无故障时间（按小时计算）

FITS

CMOS SUB

2

920154574

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Re-calculate Data

Data is based on the following assumptions.

Note: The temperature and confidence level may be adjusted to your requirements.

Disclaimer: A reliability FIT rate calculated using this tool shall not be used for any functional safety purpose. In case a raw FIT rate needs to be estimated for a component which is targeted to be used in a safety critical application (i.e. compliant to ISO 26262 standard) it should be calculated according to generic safety standards (IEC62380, IEC61709, SN29500, FIDES, etc.)

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