AD5246 128 Position I2C Compatible Programmable Resistor in SC70 Package

The AD5246 provides a compact 2 mm × 2.1 mm packaged solution for 128-position adjustment applications. This device performs the same electronic adjustment function as a variable resistor. Available in four different end-to-end resistance values (5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ), these low temperature coefficient devices are ideal for high accuracy and stability variable resistance adjustments. APPLICATIONS Mechanical potentiometer replacement in new designs Transducer adjustment of pressure, temperature, position, chemical, and optical sensors RF amplifier biasing Automotive electronics adjustment Gain control and offset adjustment 1The terms digital potentiometer, VR, and RDAC are used interchangeably in this document.

The wiper settings are controllable through the I2C compatible digital interface, which can also be used to read back the present wiper register control word. The resistance between the wiper and either end point of the fixed resistor varies linearly with respect to the digital code transferred into the RDAC1 latch.

Operating from a 2.7 V to 5.5 V power supply and consuming 3 μA allows for usage in portable battery-operated applications.

产品特点和性能优势

128 Position

End-to-End Resistance 5kΩ, 10kΩ , 50kΩ , 100kΩ

Ultra-Compact SC70-6 (2 mm x 2.1 mm) Package

I2C Compatible Interface

Full Read/Write of Wiper Register

Power-on Preset to Midscale

Single Supply +2.7 V to +5.5 V

Low Temperature Coefficient 45 ppm/°C

Low Power, IDD=3 µA typical

Wide Operating Temperature –40°C to +125°C

Evaluation Board Available

Available in lead-free (Pb-free) package

数模转换器 (DAC)

数字电位计

数据手册

文档	备注
AD5246: 128-Position I2C-Compatible Digital Resistor Datasheet (Rev. C)	PDF 513 kB

应用笔记

文档	备注
AN-1291：数字电位计：常见问题解答 (Rev. A)	PDF 1.11 M
AN-1291: Digital Potentiometers: Frequently Asked Questions (Rev. A)	PDF 805 kB
AN-686: 实现I²C®复位 (Rev. 0)	PDF 263 kB
AN-686: Implementing an I2C® Reset (Rev. 0)	PDF 44 kB

用户手册

文档	备注
UG-396: Evaluation Board for the AD5246 Digital Potentiometer	PDF 696 kB

订购信息

产品型号	封装	包装数量	温度范围	美金报价 100-499	美金报价 1000+	RoHS
AD5246BKSZ10-R2 量产	6 ld SC70	REEL 250	-40 至 125至	0	0	Y
AD5246BKSZ10-RL7 量产	6 ld SC70	REEL 3000	-40 至 125至	0.5	0.45	Y
AD5246BKSZ100-R2 量产	6 ld SC70	REEL 250	-40 至 125至	0.78	0.78	Y
AD5246BKSZ100-RL7 量产	6 ld SC70	REEL 3000	-40 至 125至	0.5	0.45	Y
AD5246BKSZ5-RL7 量产	6 ld SC70	REEL 3000	-40 至 125至	0.5	0.45	Y
AD5246BKSZ50-RL7 量产	6 ld SC70	REEL 3000	-40 至 125至	0.5	0.45	Y