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Analog Devices Inc. AD5259BRMZ5
- Part No.:
- AD5259BRMZ5
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Potentiometers
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
AD5259BRMZ5.pdf
- Description:
- IC DGTL POT 5KOHM 256TAP 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:700
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Product details
Overview
AD5259BRMZ5 from Analog Devices is a nonvolatile, I²C-compatible 256-position digital potentiometer in a compact MSOP-10 package with 5 kΩ end-to-end resistance, ±0.1% stored tolerance accuracy, and −40°C to +125°C operation-used for precision LCD VCOM adjustment, programmable power supply biasing, and RF amplifier gain control.
For engineers reviewing the AD5259BRMZ5 datasheet, AD5259BRMZ5 pinout, AD5259BRMZ5 application, or AD5259BRMZ5 equivalent, this page delivers verified specifications, real-world use cases, validated alternatives, and supply-chain support for industrial, automotive, and display electronics design.
Technical Context
The AD5259BRMZ5 implements a resistor ladder with EEPROM-persistent wiper position storage and factory-calibrated resistance tolerance (0.1% accuracy), enabling open-loop rheostat-mode applications without external calibration. Its dual-supply architecture separates VDD (2.7–5.5 V analog) and VLOGIC (2.7–5.5 V digital) rails for robust I²C interfacing across mixed-voltage systems.
It supports up to four devices on one I²C bus via AD0/AD1 address pins, features <1 ms power-on EEPROM refresh, software write protection, and operates in both rheostat (RWB) and potentiometer divider (VW) modes-with temperature coefficients as low as 15 ppm/°C for RAB and 5 ppm/°C for voltage division.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| End-to-end resistance | 5 kΩ - sets full-scale current/voltage range in rheostat or divider configurations |
| Resolution | 256 positions - enables 0.39% step resolution for fine analog tuning |
| Resistance tolerance | ±0.1% (stored in EEPROM) - eliminates need for external calibration in precision biasing |
| Operating temperature | −40°C to +125°C - qualified for under-hood automotive and industrial environments |
| I²C interface speed | Up to 400 kHz - compatible with standard-mode I²C controllers without timing redesign |
| Power-on restore time | <1 ms - ensures immediate functional state after reset, critical for display startup |
| Wiper settling time | 500 ns - supports fast dynamic adjustment in closed-loop feedback paths |
Pinout & Package
AD5259BRMZ5 is housed in a 10-lead MSOP package (3 mm × 4.9 mm × 1.1 mm), optimized for space-constrained PCB layouts while maintaining thermal performance (θJA = 169.8°C/W).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 (W) | Wiper terminal | Output node for variable resistance or voltage divider; must be current-limited to ±5 mA continuous |
| 2 (AD0) | Address bit 0 | Configurable I²C slave address bit; latched at power-up to enable multi-device bus sharing |
| 3 (AD1) | Address bit 1 | Second configurable I²C address bit; combined with AD0, allows 4 unique device addresses |
| 4 (SDA) | I²C data line | Open-drain bidirectional interface; requires external pull-up to VLOGIC |
| 5 (SCL) | I²C clock line | Input-only clock; positive-edge triggered; supports 400 kHz standard mode |
| 6 (VLOGIC) | Digital supply rail | Independent logic voltage (2.7–5.5 V); decouples I²C signaling from analog VDD domain |
| 7 (GND) | Digital ground | Reference for SDA/SCL/AD0/AD1; should be tied to analog ground at single point |
| 8 (VDD) | Analog supply rail | Primary analog power (2.7–5.5 V); powers internal resistor ladder and wiper switches |
| 9 (B) | Resistor terminal B | Low-side terminal; voltage range GND ≤ VB ≤ VDD; used with A and W for divider/rheostat |
| 10 (A) | Resistor terminal A | High-side terminal; voltage range GND ≤ VA ≤ VDD; defines full-scale resistance RAB |
Key Features
| Feature | Design Value |
|---|---|
| Nonvolatile wiper setting retention | 100-year data retention at 55°C - maintains calibrated settings across product lifetime without backup power |
| Factory-stored resistance tolerance | 0.1% accuracy stored in EEPROM - enables absolute resistance accuracy for open-loop rheostat use |
| VLOGIC pin separation | Independent 2.7–5.5 V logic rail - permits direct interfacing with 1.8 V, 3.3 V, or 5 V microcontrollers without level shifters |
| Software write protection | Configurable via I²C command - prevents accidental wiper or EEPROM updates during field operation |
| Multi-device I²C addressing | AD0/AD1 pins support 4 unique addresses - simplifies system-level integration of multiple AD5259 units on shared bus |
Applications
| LCD Panel VCOM Adjustment | RF Amplifier Bias Control |
|---|---|
Use Scenario: Fine-tuning common-mode voltage in TFT-LCD source driver circuits to minimize image flicker and crosstalk. IC Role / Device Role / Timing Role: Precision rheostat replacing mechanical trimmer; sets DC offset between source lines and panel ground. Use Value: 0.1% stored tolerance ensures consistent VCOM across production batches without manual calibration. | Use Scenario: Setting gate bias voltage for GaAs or SiGe RF power amplifiers in base station transceivers. IC Role / Device Role / Timing Role: Digitally programmable voltage divider providing stable, temperature-compensated bias point. Use Value: 5 ppm/°C voltage divider tempco minimizes gain drift over −40°C to +85°C operating range. |
| Programmable Power Supply Trim | Automotive Cabin Display Contrast |
Use Scenario: Adjusting output voltage of DC-DC converters in FPGA or ASIC power rails during system bring-up and field updates. IC Role / Device Role / Timing Role: Nonvolatile potentiometer in feedback loop of adjustable regulator; retains last-set voltage after power cycle. Use Value: <1 ms EEPROM restore ensures correct output voltage at first power-on, eliminating boot-time glitches. | Use Scenario: Dynamic contrast control in automotive infotainment displays under varying ambient light conditions. IC Role / Device Role / Timing Role: I²C-controlled rheostat adjusting backlight LED current or gamma correction reference. Use Value: 256-step resolution enables smooth, flicker-free contrast transitions responsive to ambient sensor input. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5258BRMZ5 | Same pinout and I²C interface but volatile-only memory (no EEPROM); 128 positions | Lacks nonvolatile wiper retention - requires host MCU to reinitialize at every power-up | Choose only if system firmware guarantees reliable initialization and calibration reload |
| MCP4551T-502E/MS | 50 kΩ end-to-end resistance; SPI interface; 256 positions; EEPROM; different pinout (8-lead MSOP) | Requires SPI controller and PCB layout change; higher resistance limits current drive capability | Select when SPI is preferred over I²C and 50 kΩ matches system impedance requirements |
Compared with AD5259BRMZ5, AD5258BRMZ5 sacrifices nonvolatility and resolution for lower cost and simpler control, while MCP4551T-502E/MS trades I²C compatibility and 5 kΩ drive strength for SPI flexibility and higher resistance-neither offers drop-in replacement capability due to memory architecture or interface mismatch.
Availability
AD5259BRMZ5 is available at Aetrix Electronics and suitable for LCD panel VCOM adjustment, RF amplifier biasing, and programmable power supply trimming requiring stable component supply across automotive, industrial, and medical electronics programs.
Supply support for AD5259BRMZ5 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 leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, founded in 1965 and headquartered in Wilmington, MA.
The AD5259 belongs to Analog Devices' precision digital potentiometer product line, engineered specifically for replacing mechanical trimmers in high-reliability, temperature-stable, and calibration-critical analog adjustment applications.
FAQ
What is the end-to-end resistance value of the AD5259BRMZ5?
The AD5259BRMZ5 has a nominal end-to-end resistance (RAB) of 5 kΩ. This value is factory-trimmed and stored with ±0.1% accuracy in on-chip EEPROM, enabling precise open-loop rheostat operation without external calibration. The resistance remains stable across −40°C to +125°C with a temperature coefficient of 500 ppm/°C in rheostat mode.
Does the AD5259BRMZ5 retain its wiper setting after power loss?
Yes, the AD5259BRMZ5 retains its wiper setting after power loss using on-chip EEPROM. It provides 100-year data retention at 55°C and supports up to 700,000 write cycles. Upon power-up, the device automatically restores the last stored wiper position in less than 1 ms, ensuring immediate functionality in systems like LCD panels and programmable supplies.
Can the AD5259BRMZ5 operate with different logic and analog supply voltages?
Yes, the AD5259BRMZ5 features separate VLOGIC and VDD pins, allowing independent supply voltages from 2.7 V to 5.5 V each. This enables direct interfacing with 1.8 V, 3.3 V, or 5 V microcontrollers (via VLOGIC) while powering the analog resistor ladder from a dedicated 5 V rail (VDD), eliminating level-shifter components in mixed-voltage designs.
How many AD5259BRMZ5 devices can share the same I²C bus?
Up to four AD5259BRMZ5 devices can share the same I²C bus using the AD0 and AD1 address configuration pins. These pins are sampled at power-up and decoded into unique 7-bit I²C addresses (0011000, 0011010, 1001100, or 1001110), enabling scalable multi-channel adjustment without address conflicts or additional hardware.
What is the maximum continuous current rating for the wiper terminal of the AD5259BRMZ5?
The AD5259BRMZ5 wiper terminal (Pin 1, W) supports ±5 mA continuous current and ±20 mA pulsed current. Exceeding these limits-especially at zero-scale (code 0x00) where total wiper resistance is lowest (~75 Ω typical)-risks switch degradation. Designers must ensure VA–VB differential and load conditions respect these ratings in both rheostat and potentiometer modes.
AD5259BRMZ5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Taper:
- Linear
- Configuration:
- Potentiometer
- Number of Circuits:
- 1
- Number of Taps:
- 256
- Resistance (Ohms):
- 5k
- Interface:
- I2C
- Memory Type:
- Non-Volatile
- Voltage - Supply:
- 2.7V ~ 5.5V
- Features:
- Selectable Address
- Tolerance:
- ±30%
- Temperature Coefficient (Typ):
- 500ppm/°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 10-MSOP
- Operating Temperature:
- -40°C ~ 125°C
- Resistance - Wiper (Ohms) (Typ):
- 75
AD5259BRMZ5 FAQ
1.How can I place an order for AD5259BRMZ5 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD5259BRMZ5 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 AD5259BRMZ5 reliable?
The price and inventory of AD5259BRMZ5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD5259BRMZ5 is usually 5 days.
3.What payment methods are accepted for AD5259BRMZ5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD5259BRMZ5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD5259BRMZ5?
AD5259BRMZ5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD5259BRMZ5 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 AD5259BRMZ5?
For technical support, including AD5259BRMZ5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD5259BRMZ5 requirements.
6.How does Aetrix verify that AD5259BRMZ5 is sourced from the original manufacturer or authorized distributors?
All AD5259BRMZ5 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 AD5259BRMZ5 meets industry standards.
7.What is the process for return or replacement of AD5259BRMZ5?
All AD5259BRMZ5 units undergo pre-shipment inspection (PSI). If there is an issue with AD5259BRMZ5, 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 AD5259BRMZ5 part is unused and in its original packaging.
Return procedure for AD5259BRMZ5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD5259BRMZ5 Tags
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