AD5161BRMZ50

Part: AD5161 — Analog Devices

Type: Digital Potentiometer

Description: A 256-position digital potentiometer with pin-selectable SPI/I2C compatible interface, offering end-to-end resistance options from 5 kΩ to 100 kΩ, operating from a 2.7 V to 5.5 V supply, and consuming less than 8 μA.

Operating Conditions:

• Supply voltage: 2.7 V to 5.5 V
• Operating temperature: -40°C to +125°C
• Resolution: 8 Bits (256 positions)

Absolute Maximum Ratings:

• Max supply voltage: +7 V (VDD to GND)
• Max continuous current: ±20 mA (through A, B, W terminals)
• Max junction temperature: 150°C
• Max storage temperature: -65°C to +150°C

Key Specs:

• End-to-end resistance options: 5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ
• Supply Current (IDD): 3 μA (Typ), 8 μA (Max) at VDD = 5V
• Shutdown Supply Current (IDD_SD): 0.01 μA (Typ), 1 μA (Max) at VDD = 5.5V
• Resistance Temperature Coefficient (∆RAB/∆T): 45 ppm/°C
• Wiper Resistance (RW): 50 Ω (Typ), 120 Ω (Max)
• SPI Clock Frequency (fCLK): 25 MHz (Max)
• I2C SCL Clock Frequency (fSCL): 400 kHz (Max)
• Bandwidth -3dB (BW_5K): 1.2 MHz (Typ) for RAB = 5 kΩ, Code = 0x80

Features:

• 256-position
• Pin selectable SPI/I2C compatible interface
• Extra package address decode pin AD0 for I2C
• Full read/write of wiper register
• Power-on preset to midscale
• Low temperature coefficient 45 ppm/°C
• SDO output allows multiple device daisy-chaining (SPI mode)

Applications:

• Mechanical potentiometer replacement in new designs
• Transducer adjustment of pressure, temperature, position, chemical, and optical sensors
• RF amplifier biasing
• Gain control and offset adjustment

Package:

• MSOP-10 (3 mm × 4.9 mm)

256-position

End-to-end resistance 5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ Compact MSOP-10 (3 mm × 4.9 mm) package Pin selectable SPI/I 2 C compatible interface Extra package address decode pin AD0 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 = 8 μA Wide operating temperature -40°C to +125°C

SDO output allows multiple device daisy-chaining Evaluation board available

Mechanical potentiometer replacement in new designs Transducer adjustment of pressure, temperature, position, chemical, and optical sensors RF amplifier biasing Gain control and offset adjustment

VDD = 5 V ± 10%, or 3 V ± 10%; VA = +VDD; VB = 0 V; -40°C < TA < +125°C; unless otherwise noted.