Digital Potentiometers (POTs) | CAT5140

デジタル電位差計 (POT)、256 タップ、I2C インタフェースおよび統合 EEPROM 搭載

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Overview

CAT5140 は、1 チャネルで不揮発性、256 タップのデジタル POT です。このデジタル POT は、外部アクセス可能な2つの終端間に接続された一連の等価抵抗素子で構成されます。各抵抗素子の間のタップ・ポイントは、リニア・テーパ電位差計を構成している内部 CMOS スイッチを経由して、ワイパー出力へ選択的に接続できます。CAT5140 は、ワイパー位置用に揮発性ワイパー・レジスタ (WR) と 8 ビットの不揮発性 EEPROM、また、汎用データの保存用として、さらに 5 つの不揮発性レジスタを持っています。レジスタのプログラミングは、I2C インタフェース経由で制御されます。電源起動時、ワイパー位置は不揮発性メモリ・レジスタ (IVR) に保存された最新値にリセットされます。CAT5140 は、工業用温度範囲 -40°C ～ +85°C で動作します。

  • Gain Adjustment and Line Impedance Matching
  • Automated Calibration
  • Contrast, Brightness and Volume Control
  • LCD Screen Adjustment
  • Instrumentation for Handheld, Portable Devices
  • Industrial Automation for Handheld, Portable Devices
  • Portable Games
  • 400 kHz I2C Compatible Interface
  • 256 Position Linear Taper Potentiometer
  • End-to-End Resistance = 50 kΩ / 100 kΩ
  • TCR = 100 ppm/°C (typical)
  • Standby Current = 2 µA (max)
  • Typical Wiper Resistance = 70 Ω @ 3.3 V
  • Operating Voltage = 2.5 V to 5.5 V
  • 6 Registers 8-bit Non-volatile EEPROM
  • 2,000,000 Data Write Stores
  • 100 Year Data Retention
  • 8-Lead MSOP Package
  • Pb-free RoHS Compliant: NiPdAu Plating

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CAD Models

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Package Type

Case Outline

MSL Type

MSL Temp (°C)

Container Type

Container Qty.

ON Target

# of Pots

# of Taps

Type

Control Interface

Resistance Typ (kΩ)

VH Max (V)

Wiper Position Memory

VDD Max (V)

Reference Price

CAT5140ZI-00-GT3

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Obsolete

CAD Model

Pb

A

H

P

MSOP8 3.0x3.0

1

260

REEL

3000

N

1

256

Potentiometer

I2C

100

VCC

Yes

5.5

Price N/A

More Details

CAT5140ZI-50-GT3

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Lifetime

CAD Model

Pb

A

H

P

MSOP8 3.0x3.0

1

260

REEL

3000

N

1

256

Potentiometer

I2C

50

VCC

Yes

5.5

$0.5809

More Details

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