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Analog Devices Inc. AD5254BRUZ100
- Part No.:
- AD5254BRUZ100
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Potentiometers
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AD5254BRUZ100.pdf
- Description:
- IC DGT POT 100KOHM 256TP 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:993
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Product details
Overview
AD5254BRUZ100 from Analog Devices is a quad-channel, 256-position, nonvolatile digital potentiometer in TSSOP-20 package with 100 kΩ end-to-end resistance, I²C interface, and ±2.25 V to ±2.75 V dual-supply or 2.7 V to 5.5 V single-supply operation. It stores wiper settings in EEPROM with 100-year data retention at 55°C and restores them in 300 µs at power-on. It is used for precision programmable gain control in industrial sensor signal conditioning circuits.
For engineers reviewing the AD5254BRUZ100 datasheet, AD5254BRUZ100 pinout, AD5254BRUZ100 application, or AD5254BRUZ100 equivalent, key selection considerations include its 8-bit resolution per channel, 40 kHz –3 dB bandwidth (100 kΩ version), EEMEM write protection, synchronous/asynchronous quad-channel update, and support for ±6 dB step commands for LED brightness or audio scaling.
Technical Context
The AD5254BRUZ100 implements four independent RDAC channels, each with 256-step linear taper and nonvolatile EEMEM storage. Its I²C interface supports standard-mode (400 kHz) timing, dual slave address bits (AD0/AD1), and command-based operations including direct register read/write, increment/decrement, and ±6 dB step changes that double/halve wiper position.
Each channel operates in rheostat or potentiometer mode with terminal voltage range from VSS to VDD, 650 ppm/°C resistance tempco, and guaranteed monotonicity. Wiper resistance is 75–130 Ω at 5 V, and channel-matching tolerance is 0.05% for 100 kΩ variants - critical for matched gain-setting networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8-bit (256 positions) per channel - enables fine-grained analog adjustment with <0.4% step size in 100 kΩ configuration. |
| End-to-End Resistance | 100 kΩ ±20% - defines full-scale impedance range for gain-setting and bias networks; matched within 0.05% between channels. |
| Supply Range | Single: 2.7 V–5.5 V; Dual: ±2.25 V–±2.75 V - supports mixed-signal systems with rail-to-rail analog signal handling. |
| –3 dB Bandwidth | 40 kHz at midscale (RAB = 100 kΩ) - sets usable AC signal frequency limit for programmable filters or video gain control. |
| EEMEM Restore Time | 300 µs typical - ensures deterministic startup behavior without external initialization firmware. |
| Data Retention | 100 years at TJ = 55°C - guarantees long-term calibration stability in unattended industrial equipment. |
| I²C Clock Frequency | Up to 400 kHz - compatible with standard microcontroller peripherals without custom timing overhead. |
Pinout & Package
TSSOP-20 package with 0.65 mm pitch, thermally enhanced for low-power analog operation; JEDEC MO-153 compliant, RoHS-compliant lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| W0–W3 | Wiper outputs for RDAC0–RDAC3 | Low-impedance analog output nodes; support ≤±50 µA continuous current in 100 kΩ configuration. |
| A0–A3, B0–B3 | Fixed resistor terminals per channel | Define end-to-end resistance path; voltage range VSS to VDD, polarity unrestricted. |
| SDA, SCL | I²C bidirectional data/clock | Open-drain SDA requires external pull-up; SCL accepts 0–5.5 V logic; supports multi-device bus with AD0/AD1 addressing. |
| AD0, AD1 | Slave address inputs | Set 2-bit device address (00–11); enable up to four AD5254BRUZ100 on one I²C bus without address conflict. |
| WP | Write-protect enable (active low) | Hardware lock for EEMEM writes; prevents accidental overwrites during system operation or brownout conditions. |
| VDD, VSS, DGND | Power and ground rails | VDD sources 35 mA peak during EEMEM store; VSS must sink same in dual-supply mode; DGND ties to analog ground at single point. |
Key Features
| Feature | Design Value |
|---|---|
| Nonvolatile wiper storage | EEPROM retains settings across power cycles with 100 k-cycle endurance and 100-year retention at 55°C - eliminates boot-time recalibration. |
| Quad-channel synchronization | Synchronous or asynchronous update modes allow simultaneous or staggered wiper changes - essential for matched filter tuning or multi-channel bias control. |
| ±6 dB step commands | Doubles or halves wiper position in one I²C command - enables logarithmic scaling for LED brightness or audio volume without host-side math. |
| User EEMEM space | 12 bytes of dedicated nonvolatile memory (EEMEM4–EEMEM15) - stores calibration coefficients, board IDs, or lookup tables alongside wiper data. |
| Resistance tolerance storage | Actual RAB value stored in EEMEM - enables software compensation for absolute resistance accuracy in precision instrumentation applications. |
Applications
| RGB LED Backlight Control | Programmable Gain Amplifier |
|---|---|
Use Scenario: Dynamic backlight intensity adjustment in industrial LCD panels under varying ambient light. IC Role / Device Role / Timing Role: Four-channel digital potentiometer configures individual red/green/blue current-limiting resistors in constant-current LED drivers. Use Value: Enables precise 256-step color balance tuning and factory calibration storage in EEMEM - no external DAC or microcontroller GPIO required. |
Use Scenario: Adjustable gain stage in a 4-channel sensor signal conditioner for strain gauge or RTD interfaces. IC Role / Device Role / Timing Role: Sets feedback resistor ratio in op-amp inverting amplifier topology; all four channels updated synchronously for matched gain across sensors. Use Value: Achieves <0.05% inter-channel gain matching and retains calibrated gain values after power loss - critical for multi-sensor coherence. |
| RF Power Amplifier Bias | Sensor Calibration Storage |
Use Scenario: Temperature-compensated bias current setting for GaAs FET amplifiers in cellular base station transceivers. IC Role / Device Role / Timing Role: Configures gate voltage divider network; wiper updated via I²C during thermal compensation routines. Use Value: Supports ±6 dB step commands for rapid bias adjustment and stores temperature-derived offset values in user EEMEM - improves PA linearity over temperature. |
Use Scenario: Storing per-unit sensor offset/gain coefficients in medical diagnostic equipment with field-replaceable modules. IC Role / Device Role / Timing Role: Host MCU writes calibration data to EEMEM4–EEMEM15 during manufacturing; reads back at boot to configure signal chain. Use Value: Eliminates need for external EEPROM; provides 12-byte nonvolatile storage co-located with wiper settings - reduces BOM count and layout area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5253BRUZ100 | 64-position (6-bit) resolution vs. 256-position (8-bit); identical 100 kΩ resistance, TSSOP-20, and EEMEM architecture. | Limited to coarse adjustments; insufficient for high-accuracy gain or LED dimming where <1% step resolution is required. | Select AD5253BRUZ100 only when cost sensitivity outweighs resolution needs and ±1.5 LSB INL is acceptable. |
| MCP45HV51-104 | Single-channel, 7-bit (128-step), 100 kΩ, SPI interface, higher 10 V supply rating; no EEMEM restore-on-power-up. | Requires external MCU intervention to reload settings; lacks quad-channel sync and ±6 dB commands. | Choose MCP45HV51-104 for high-voltage (≤10 V) rheostat use where I²C is unavailable and single-channel operation suffices. |
Compared with AD5253BRUZ100, AD5254BRUZ100 delivers 4× finer resolution and lower DNL/INL error for precision analog control; compared with MCP45HV51-104, it offers integrated nonvolatile startup, quad-channel coordination, and logarithmic step support - reducing firmware complexity and improving system-level accuracy.
Availability
AD5254BRUZ100 is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, RGB LED backlight control, and RF power amplifier bias applications requiring stable component supply, long-term calibration retention, and I²C-compatible programmability.
Supply support for AD5254BRUZ100 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 is a global leader in high-performance analog, mixed-signal, and DSP technologies, serving industrial, automotive, communications, and healthcare markets with precision signal processing solutions.
The AD5253/AD5254 product line was designed specifically for replacing mechanical potentiometers in harsh environments, delivering nonvolatile programmability, multi-channel coordination, and robust EEMEM reliability for mission-critical calibration and bias control.
FAQ
What is the maximum operating temperature range for the AD5254BRUZ100?
The AD5254BRUZ100 is rated for continuous operation from –40°C to +105°C, meeting extended industrial temperature requirements. This range is validated across all electrical specifications including EEMEM retention, wiper resistance, and I²C timing - ensuring reliable performance in enclosed enclosures or outdoor deployments without derating.
Does the AD5254BRUZ100 support dual-supply operation?
Yes, the AD5254BRUZ100 supports dual-supply operation from ±2.25 V to ±2.75 V (VDD–VSS ≤ +5.5 V). In this mode, VSS must be capable of sinking 35 mA for 26 ms during EEMEM store operations, and analog terminals (A, B, W) maintain full VSS-to-VDD voltage range - enabling true bipolar signal handling in precision instrumentation.
How does the AD5254BRUZ100 handle power-on initialization?
The AD5254BRUZ100 automatically restores wiper settings from EEMEM to RDAC registers within 300 µs after VDD rise, with outputs preset to midscale during the restore window. No external reset or host initialization is required - ensuring deterministic analog behavior at system startup without firmware dependency.
Can the AD5254BRUZ100 be used in potentiometer mode with grounded terminals?
Yes, the AD5254BRUZ100 supports standard potentiometer configuration: connect Terminal A to VDD (or signal source), Terminal B to GND (or reference), and Terminal W to op-amp input or ADC. Voltage range on all terminals is VSS to VDD, and polarity is unrestricted - allowing flexible implementation in both single- and dual-supply topologies.
What is the purpose of the WP pin on the AD5254BRUZ100?
The WP (Write Protect) pin on the AD5254BRUZ100 is an active-low hardware lock that disables all EEMEM write operations when asserted. When WP = VDD, writes to EEMEM registers (including wiper storage and user data) are blocked - preventing accidental corruption during system updates, brownout events, or debug sessions while preserving existing calibration data.
AD5254BRUZ100 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Taper:
- Linear
- Configuration:
- Potentiometer
- Number of Circuits:
- 4
- Number of Taps:
- 256
- Resistance (Ohms):
- 100k
- Interface:
- I2C
- Memory Type:
- Non-Volatile
- Voltage - Supply:
- 2.7V ~ 5.5V, ±2.25V ~ 2.75V
- Features:
- Selectable Address
- Tolerance:
- ±20%
- Temperature Coefficient (Typ):
- 650ppm/°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 20-TSSOP
- Operating Temperature:
- -40°C ~ 105°C
- Resistance - Wiper (Ohms) (Typ):
- 200
AD5254BRUZ100 FAQ
1.How can I place an order for AD5254BRUZ100 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD5254BRUZ100 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for AD5254BRUZ100 reliable?
The price and inventory of AD5254BRUZ100 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD5254BRUZ100 is usually 5 days.
3.What payment methods are accepted for AD5254BRUZ100?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD5254BRUZ100 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD5254BRUZ100?
AD5254BRUZ100 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD5254BRUZ100 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for AD5254BRUZ100?
For technical support, including AD5254BRUZ100 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD5254BRUZ100 requirements.
6.How does Aetrix verify that AD5254BRUZ100 is sourced from the original manufacturer or authorized distributors?
All AD5254BRUZ100 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AD5254BRUZ100 meets industry standards.
7.What is the process for return or replacement of AD5254BRUZ100?
All AD5254BRUZ100 units undergo pre-shipment inspection (PSI). If there is an issue with AD5254BRUZ100, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The AD5254BRUZ100 part is unused and in its original packaging.
Return procedure for AD5254BRUZ100:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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