X9271

Single Digitally-Controlled (XDCP™) Potentiometer

Product Status: 量産中

OVERVIEW

The X9271 integrates a single, digitally controlled potentiometer (XDCP™) on a monolithic CMOS integrated circuit.

The digitally controlled potentiometer is implemented by using 255 resistive elements in a series array. Between each element are tap points connected to the wiper terminal through switches. The position of the wiper on the array is controlled by the user through the SPI bus interface. The potentiometer has associated with it a volatile Wiper Counter Register (WCR) and four nonvolatile data registers that can be directly written to and read by the user. The contents of the WCR control the position of the wiper on the resistor array though the switches. Power-up recalls the contents of the default data register (DR0) to the WCR.

The XDCP can be used as a three-terminal potentiometer or as a two-terminal variable resistor in a wide variety of applications including control, parameter adjustments, and signal processing.

KEY FEATURES

  • 256 Resistor Taps
  • SPI Serial Interface for Write, Read, and Transfer Operations of Potentiometer
  • Wiper Resistance, 100Ω typical at VCC = 5V
  • 16 Nonvolatile Data Registers
  • Nonvolatile Storage of Multiple Wiper Positions
  • Power-on Recall; Loads Saved Wiper Position on Power-up
  • Standby Current <3µA Max
  • VCC = 2.7V to 5.5V Operation
  • 50kΩ End-to-End Resistance
  • 100-yr Data Retention
  • Endurance: 100,000 Data Changes per Bit per Register
  • 14-Lead TSSOP
  • Low-power CMOS
  • Pb-Free Plus Anneal Available (RoHS Compliant)

PARAMETRICS

Parameters
X9271
Basic Information
Production Status
量産中
チャネル当たりのデバイス数
1
タップ数
256
メモリタイプ
Nonvolatile
バス/出力インタフェース
SPI
抵抗オプション (kΩ)
50
電源電圧Vcc (V) (min)
2.7
電源電圧Vcc (V) (max)
5.5
電源電流Icc
5 µA
抵抗変化特性
Linear
VL端子電圧 (min)
0 V
VL端子電圧 (max)
5.5 V
ワイパ電流 (mA)
3
ワイパ抵抗 (Ω)
150
二電源範囲 (V)
N/A
最大動作温度
85 °C
エンドツーエンド温度係数 (ppm/øC)
300
中間点レシオメトリック温度係数
20
認定レベル
Standard
単一電源範囲 (V)
0 to 5.5
電源電圧Vcc範囲 (V)
2.7 to 5.5
CANサンプル
YES
温度範囲
-40 to +85

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