AD5270 Series

1024-Position, 1% Resistor Tolerance Error, SPI Interface and 50-TP Memory Digital Rheostat

Catalog

1024-Position, 1% Resistor Tolerance Error, SPI Interface and 50-TP Memory Digital Rheostat

Part	Number of Circuits	Temperature Coefficient (Typ)	Features	Number of Taps	Configuration	Tolerance	Taper	Package / Case	Operating Temperature [Max]	Operating Temperature [Min]	Interface	Resistance (Ohms)	Resistance - Wiper (Ohms) (Typ)	Voltage - Supply [Min]	Voltage - Supply [Max]	Mounting Type	Memory Type	Supplier Device Package	Package / Case [x]	Package / Case [x]
Analog Devices AD5270BCPZ-20-RL7	1	5 ppm/°C	Cascade Pin	1024	Rheostat	1 %	Linear	10-VFDFN Exposed Pad CSP	125 °C	-40 °C	SPI	20 kOhms	35 Ohms	-2.5 V 2.7 V	2.75 V 5.5 V	Surface Mount	Non-Volatile	10-LFCSP-WD (3x3)
Analog Devices AD5270BRMZ-50	1	5 ppm/°C	Cascade Pin	1024	Rheostat	1 %	Linear	10-MSOP 10-TFSOP	125 °C	-40 °C	SPI	50 kOhms	35 Ohms	-2.5 V 2.7 V	2.75 V 5.5 V	Surface Mount	Non-Volatile	10-MSOP	3 mm	0.118 in
Analog Devices AD5270BRMZ-50-RL7	1	5 ppm/°C	Cascade Pin	1024	Rheostat	1 %	Linear	10-MSOP 10-TFSOP	125 °C	-40 °C	SPI	50 kOhms	35 Ohms	-2.5 V 2.7 V	2.75 V 5.5 V	Surface Mount	Non-Volatile	10-MSOP	3 mm	0.118 in
Analog Devices AD5270BCPZ-100-RL7	1	5 ppm/°C	Cascade Pin	1024	Rheostat	1 %	Linear	10-VFDFN Exposed Pad CSP	125 °C	-40 °C	SPI	100 kOhms	35 Ohms	-2.5 V 2.7 V	2.75 V 5.5 V	Surface Mount	Non-Volatile	10-LFCSP-WD (3x3)

Catalog

1024-Position, 1% Resistor Tolerance Error, SPI Interface and 50-TP Memory Digital Rheostat

Key Features

• Single-channel, 1024-/256-position resolution

• 20 kΩ, 50 kΩ and 100 kΩ nominal resistance

• Maximum ±1% nominal resistor tolerance error

• 50-times programmable (50-TP) wiper memory

• Rheostat mode temperature coefficient: 5 ppm/°C

• 2.7 V to 5.5 V single-supply operation

• ±2.5 V to ±2.75 V dual-supply operation for ac or bipolar operations

• SPI-compatible interface

• Wiper setting readback

• Power on refreshed from 50-TP memory

• Thin LFCSP, 10-lead, 3 mm × 3 mm × 0.8 mm package

• Compact MSOP, 10-lead, 3 mm × 4.9 mm × 1.1 mm package

Description

The AD5270/AD5271are single-channel, 1024-/256-position digital rheostats that combine industry leading variable resistor performance with nonvolatile memory (NVM) in a compact package.The AD5270/AD5271 ensure less than 1% end-to-end resistor tolerance error and offer 50-times programmable (50-TP) memory.The guaranteed industry leading low resistor tolerance error feature simplifies open-loop applications as well as precision calibration and tolerance matching applications.The AD5270/AD5271 device wiper settings are controllable through the SPI digital interface. Unlimited adjustments are allowed before programming the resistance value into the 50-TP memory. The AD5270/AD5271 do not require any external voltage supply to facilitate fuse blow and there are 50 opportunities for permanent programming. During 50-TP activation, a permanent blow fuse command freezes the resistance position (analogous to placing epoxy on a mechanical trimmer).The AD5270/AD5271 are available in a 3 mm x 3 mm, 10-lead LFCSP package and in a 10-lead MSOP package. The parts are guaranteed to operate over the extended industrial temperature range of −40°C to +125°C.ApplicationsMechanical potentiometer replacementsOp-amp: variable gain controlInstrumentation: gain, offset adjustmentProgrammable voltage-to-current conversionsProgrammable filters, delays, time constantsProgrammable power supplySensor calibration