X9250

Quad Digitally Controlled Potentiometer (XDCP™)

Product Status: 量産中

OVERVIEW

The X9250 integrates 4 digitally controlled potentiometers (XDCP) on a monolithic CMOS integrated circuit.

The digitally controlled potentiometer is implemented 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. Each potentiometer has associated with it a volatile Wiper Counter Register (WCR) and 4 nonvolatile Data Registers (DR0:DR3) that can be directly written to and read by the user. The contents of the WCR controls the position of the wiper on the resistor array though the switches. Power up recalls the contents of 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

  • Four potentiometers in one package
  • 256 resistor taps/pot - 0.4% resolution
  • SPI serial interface
  • Wiper resistance, 40Ω typical @ VCC = 5V
  • Four nonvolatile data registers for each pot
  • Nonvolatile storage of wiper position
  • Standby current < 5µA max (total package)
  • Power supplies
  • VCC = 2.7V to 5.5V
  • V+ = 2.7V to 5.5V
  • V- = -2.7V to -5.5V
  • 100kΩ, 50kΩ total pot resistance
  • High reliability
  • Endurance - 100,000 data changes per bit per register
  • Register data retention - 100 years
  • 24 Ld SOIC, 24 Ld TSSOP
  • Dual supply version of X9251
  • Pb-free plus anneal available (RoHS compliant)

PARAMETRICS

Parameters
X9250
Basic Information
Production Status
量産中
チャネル当たりのデバイス数
4
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, 100
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)
-5.5 V
VL端子電圧 (max)
5.5 V
ワイパ電流 (mA)
7.5
ワイパ抵抗 (Ω)
150
二電源範囲 (V)
-2.7 to -5.5, +2.7 to +5.5
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
電源電圧Vcc範囲 (V)
2.7 to 5.5
温度範囲
-40 to +85

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