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Analog Devices Inc. AD5254BRUZ10-RL7
- Part No.:
- AD5254BRUZ10-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Potentiometers
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AD5254BRUZ10-RL7.pdf
- Description:
- IC DGT POT 10KOHM 256TAP 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:7,912
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Product details
Overview
AD5254BRUZ10-RL7 from Analog Devices is a quad-channel, 256-position, nonvolatile digital potentiometer in TSSOP-20 package with 10 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 replaces mechanical potentiometers in precision gain/offset control, LED brightness adjustment, and sensor calibration circuits.
For engineers reviewing the AD5254BRUZ10-RL7 datasheet, AD5254BRUZ10-RL7 pinout, AD5254BRUZ10-RL7 application, or AD5254BRUZ10-RL7 equivalent, this page delivers verified electrical specs, I²C timing constraints, EEMEM restore behavior, wiper readback capability, and real-world use cases for embedded analog tuning.
Technical Context
The AD5254BRUZ10-RL7 implements four independent RDAC channels, each with 8-bit resolution and nonvolatile EEMEM storage. Its I²C interface supports up to 400 kHz clock frequency, two slave address bits (AD0/AD1), and direct register access for RDAC and EEMEM locations including 12 bytes of user-defined memory.
Each channel operates in rheostat or potentiometer mode with guaranteed monotonicity, 0.15% channel-resistance matching, and voltage divider tempco of 15 ppm/°C at mid-scale. Power-on restoration completes in 300 µs, and EEMEM rewrite takes 540 µs - both critical for deterministic startup behavior in industrial control systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 256 positions (8-bit) per channel - enables fine-grained analog tuning with <0.4% step resolution for 10 kΩ device. |
| End-to-End Resistance | 10 kΩ ±20% at 25°C - defines full-scale current/voltage range and thermal drift (650 ppm/°C). |
| Supply Range | +2.7 V to +5.5 V single supply or ±2.25 V to ±2.75 V dual supply - supports mixed-signal systems with rail-to-rail analog signal swing. |
| Bandwidth | 400 kHz at 10 kΩ midscale - sufficient for audio-level signal conditioning and slow-control loop feedback paths. |
| EEMEM Retention | 100 years at 55°C junction temperature - ensures long-term calibration stability without external backup power. |
| I²C Timing | 400 kHz max SCL frequency, tSU;DAT ≥100 ns - compatible with standard fast-mode microcontrollers without custom bit-banging. |
| Wiper Settling Time | 1.5 µs (RAB = 10 kΩ) - enables rapid reconfiguration during dynamic system adaptation. |
| Operating Temperature | –40°C to +105°C - qualified for extended industrial and automotive under-hood environments. |
Pinout & Package
TSSOP-20 package with 0.65 mm pitch, JEDEC MO-153 compliant, 143°C/W θJA thermal resistance. Pin 1 marked by beveled corner; exposed pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| W0–W3 | Wiper outputs for RDAC0–RDAC3 | Low-impedance analog output nodes; support ≤±500 µA continuous current at 10 kΩ setting. |
| A0–A3, B0–B3 | Fixed resistor terminals per channel | Define end-to-end resistance path; voltage range limited to VSS–VDD with no polarity restriction. |
| SDA, SCL | I²C bidirectional data/clock | Open-drain SDA requires external pull-up; SCL pull-up recommended to minimize power consumption. |
| AD0, AD1 | Slave address inputs | Enable up to four devices on same I²C bus; logic levels referenced to VDD/VSS. |
| WP | Write-protect enable (active low) | Prevents accidental EEMEM writes; leakage <8 µA when pulled high. |
| VDD, VSS, DGND | Power and ground rails | VDD sources 35 mA during EEMEM store; DGND must tie to analog ground at single point to avoid noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous quad-channel update | Simultaneous wiper movement across all four RDACs eliminates inter-channel timing skew in gain-matching applications. |
| ±6 dB step commands | Doubles/halves wiper position in one I²C command - ideal for logarithmic LED brightness or audio volume control. |
| Wiper setting readback | Direct read of current RDAC register contents via I²C - enables closed-loop verification without external ADC. |
| Resistance tolerance storage | EEMEM stores absolute RAB values per channel - allows software compensation for unit-to-unit end-to-end resistance variation. |
| User EEMEM space | 12 bytes (EEMEM4–EEMEM15) for calibration coefficients, board IDs, or lookup tables - persists across power cycles. |
Applications
| RGB LED Backlight Control | Programmable Gain Amplifier |
|---|---|
|
Use Scenario: Precise white-point tuning of LCD backlight using separate red, green, and blue LED strings. IC Role / Device Role / Timing Role: AD5254BRUZ10-RL7 configures as three independent rheostats (W–B) to set current-limiting resistances for each LED string. Use Value: 256-step resolution enables <0.4% intensity granularity; nonvolatile storage retains factory-set color balance after power loss. |
Use Scenario: Adjustable gain stage in sensor signal conditioning chain where gain must be calibrated per unit. IC Role / Device Role / Timing Role: AD5254BRUZ10-RL7 operates as a 4-terminal potentiometer in inverting op-amp feedback path to set closed-loop gain. Use Value: 0.15% channel matching ensures consistent gain across multi-channel systems; EEMEM stores per-board calibration coefficients. |
| Sensor Calibration | Programmable Voltage-to-Current Conversion |
|
Use Scenario: Offset and span adjustment for industrial pressure transducers with 4–20 mA output. IC Role / Device Role / Timing Role: AD5254BRUZ10-RL7 provides two independent potentiometer dividers: one for zero-adjust (offset), one for span (gain). Use Value: 15 ppm/°C voltage-divider tempco minimizes drift over –40°C to +105°C; 100-year EEMEM retention preserves calibration for field-deployed units. |
Use Scenario: Configurable 4–20 mA transmitter where loop current must be precisely set by host MCU. IC Role / Device Role / Timing Role: AD5254BRUZ10-RL7 acts as programmable shunt in Howland current source topology, defining IOUT = VREF / RAB. Use Value: 10 kΩ nominal resistance yields 200 µA/mV scaling; 8-bit resolution supports 78.1 µA step size at 2.048 V reference. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5253BRUZ10-RL7 | 64-position (6-bit) resolution, identical 10 kΩ resistance and TSSOP-20 package | Lower tuning granularity; suitable where coarse adjustment suffices and cost sensitivity is higher | Select AD5253BRUZ10-RL7 only if 64-step resolution meets system accuracy requirements and EEMEM usage is minimal. |
| MCP45HV51-103E/ST | Single-channel, 256-tap, 10 kΩ, SPI interface, 100 V tolerant A/B terminals | Lacks quad integration and I²C compatibility; supports higher terminal voltage but no simultaneous channel update | Choose MCP45HV51-103E/ST only for high-voltage (>10 V) rheostat applications requiring SPI and where quad-channel coordination is unnecessary. |
Compared with AD5254BRUZ10-RL7, AD5253BRUZ10-RL7 trades resolution for lower cost and reduced code complexity, while MCP45HV51-103E/ST offers voltage robustness at the expense of channel count and bus protocol compatibility - neither is pin-compatible nor drop-in replaceable.
Availability
AD5254BRUZ10-RL7 is available at Aetrix Electronics and suitable for RGB LED backlight control, programmable gain amplifiers, sensor calibration, programmable voltage-to-current conversion, and industrial temperature-compensated analog tuning requiring stable component supply and long-term calibration integrity.
Supply support for AD5254BRUZ10-RL7 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 digital signal processing semiconductors, serving industrial, communications, automotive, and healthcare markets since 1965.
The AD5253/AD5254 product line delivers quad-channel, nonvolatile digital potentiometers optimized for precision analog trimming in space-constrained, thermally demanding applications where mechanical potentiometer reliability and recalibration are unacceptable.
FAQ
What is the default power-on behavior of the AD5254BRUZ10-RL7?
The AD5254BRUZ10-RL7 automatically restores wiper settings from EEMEM to all four RDAC registers within 300 µs of VDD crossing threshold. This occurs regardless of WP pin state and ensures deterministic startup without host intervention. The AD5254BRUZ10-RL7 does not require initialization code to achieve known analog states at power-up.
Can the AD5254BRUZ10-RL7 operate from a dual supply?
Yes, the AD5254BRUZ10-RL7 supports dual-supply operation from ±2.25 V to ±2.75 V (VDD–VSS ≤ +5.5 V). In this mode, VSS connects to negative rail, and all analog terminals (A, B, W) swing symmetrically between VSS and VDD. Digital I/O remains referenced to VDD/VSS, and EEMEM functions identically to single-supply mode.
How many bytes of user data can be stored in the AD5254BRUZ10-RL7's EEMEM?
The AD5254BRUZ10-RL7 provides 12 dedicated user-accessible bytes in EEMEM locations EEMEM4 through EEMEM15. These locations are separate from the four RDAC-setting storage slots (EEMEM0–EEMEM3) and retain data for 100 years at 55°C junction temperature. No additional configuration is required to use this space.
Does the AD5254BRUZ10-RL7 support simultaneous update of all four channels?
Yes, the AD5254BRUZ10-RL7 supports synchronous quad-channel update via I²C command 0x0F (all RDACs). This forces all four wipers to move to new positions in lockstep, eliminating transient mismatches during gain/offset recalibration. Asynchronous updates are also supported for independent channel control.
What is the maximum current the AD5254BRUZ10-RL7 wiper can sink or source?
At 10 kΩ setting, the AD5254BRUZ10-RL7 wiper supports ±500 µA continuous current (IAB) per channel. This limit scales inversely with resistance: ±5 mA applies only to 1 kΩ versions. Exceeding these values risks exceeding package power dissipation limits or violating absolute maximum ratings on terminal voltages.
AD5254BRUZ10-RL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Taper:
- Linear
- Configuration:
- Potentiometer
- Number of Circuits:
- 4
- Number of Taps:
- 256
- Resistance (Ohms):
- 10k
- 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
AD5254BRUZ10-RL7 FAQ
1.How can I place an order for AD5254BRUZ10-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD5254BRUZ10-RL7 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 AD5254BRUZ10-RL7 reliable?
The price and inventory of AD5254BRUZ10-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD5254BRUZ10-RL7 is usually 5 days.
3.What payment methods are accepted for AD5254BRUZ10-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD5254BRUZ10-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD5254BRUZ10-RL7?
AD5254BRUZ10-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD5254BRUZ10-RL7 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 AD5254BRUZ10-RL7?
For technical support, including AD5254BRUZ10-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD5254BRUZ10-RL7 requirements.
6.How does Aetrix verify that AD5254BRUZ10-RL7 is sourced from the original manufacturer or authorized distributors?
All AD5254BRUZ10-RL7 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 AD5254BRUZ10-RL7 meets industry standards.
7.What is the process for return or replacement of AD5254BRUZ10-RL7?
All AD5254BRUZ10-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD5254BRUZ10-RL7, 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 AD5254BRUZ10-RL7 part is unused and in its original packaging.
Return procedure for AD5254BRUZ10-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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