Analog Devices Inc. AD5214TD

Overview

AD5214TD from Analog Devices is a quad-channel, 64-position digital potentiometer with I²C-compatible interface, 10 kΩ nominal resistance, ±20% end-to-end tolerance, and 2.7 V to 5.5 V supply range, used in precision gain/offset trimming for sensor signal conditioning circuits.

For engineers reviewing the AD5214TD datasheet, AD5214TD pinout, AD5214TD application, or AD5214TD equivalent, key selection factors include wiper resistance (70 Ω max), temperature coefficient (35 ppm/°C), power dissipation (20 mW per channel), and guaranteed monotonicity over full scale.

Technical Context

The AD5214TD implements four independent, nonvolatile digital potentiometers in a single SOIC-16 package, each with EEPROM-based wiper position storage and I²C address select pins (A0/A1) enabling up to four devices on one bus. It supports write protection via hardware pin and includes power-on reset to last-stored wiper setting.

Each channel features 6-bit resolution (64 taps), rail-to-rail analog voltage operation, and guaranteed 100,000 write cycles with 40-year data retention at +25°C. The device operates across –40°C to +85°C and meets JEDEC JESD22-A117 reliability standards.

Key Specifications

Pinout & Package

AD5214TD is housed in a 16-lead narrow SOIC package (5.3 mm × 10.2 mm, 1.27 mm pitch) with exposed pad for thermal enhancement and mechanical stability.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar digital potentiometer applications.

Compared with AD5214TD, AD5204BRUZ10 trades nonvolatility for lower cost and faster write speed, while MCP42050-I/P offers SPI compatibility at the expense of missing hardware-level write protection and deterministic power-on state recovery.

Availability

AD5214TD is available at Aetrix Electronics and suitable for programmable sensor calibration, industrial data acquisition, and HMI panel brightness control requiring stable component supply and long-term traceability.

Supply support for AD5214TD includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices, Inc. is a global semiconductor company specializing in high-performance analog, mixed-signal, and digital signal processing technologies.

The AD5210/AD5212/AD5214 series delivers nonvolatile, multi-channel digital potentiometers for factory-calibrated analog signal conditioning in industrial and instrumentation systems.

FAQ

What is the maximum clock frequency supported by the I²C interface of the AD5214TD?

The AD5214TD supports standard-mode (100 kHz) and fast-mode (400 kHz) I²C communication. Its SCL input is rated for frequencies up to 400 kHz with appropriate rise/fall time compliance. This allows rapid wiper updates during system calibration without blocking MCU execution-critical for high-throughput test fixtures deploying the AD5214TD.

Does the AD5214TD retain its wiper settings after power cycling?

Yes, the AD5214TD retains wiper positions across power cycles using on-chip EEPROM. Each channel stores its 6-bit setting with guaranteed 100,000 write cycles and 40-year data retention at +25°C. This nonvolatility eliminates boot-time reinitialization routines and ensures repeatable analog performance in field-deployed AD5214TD applications.

Can the AD5214TD operate from a 3.3 V supply?

Yes, the AD5214TD operates from 2.7 V to 5.5 V, making it fully compatible with 3.3 V systems. At 3.3 V, it maintains full 64-step resolution, 70 Ω max wiper resistance, and I²C fast-mode timing. This enables direct integration into 3.3 V microcontroller-based sensor nodes without level-shifting-common in AD5214TD deployments for portable instrumentation.

How many AD5214TD devices can share the same I²C bus?

Up to four AD5214TD devices can share one I²C bus using the A0 and A1 address select pins, which configure slave addresses from 0x2C to 0x2F. No external address translation or bus arbitration logic is required-simplifying multi-channel calibration architectures where multiple AD5214TD units manage separate sensor signal chains.

Is there hardware write protection for the EEPROM in the AD5214TD?

Yes, the AD5214TD includes a dedicated WP (Write Protect) pin that, when pulled low, disables all EEPROM write operations-including I²C commands to store wiper positions. This prevents accidental corruption during system debug or firmware updates, ensuring calibration integrity remains enforced in production AD5214TD installations.