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Analog Devices Inc. AD5141BCPZ10-RL7
- Part No.:
- AD5141BCPZ10-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Potentiometers
- Package:
- 16-WFQFN Exposed Pad, CSP
- Datasheet:
-
AD5141BCPZ10-RL7.pdf
- Description:
- IC DGTL POT 10KOHM 16LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:11,469
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Product details
Overview
AD5141BCPZ10-RL7 from Analog Devices is a single-channel, 256-position, nonvolatile digital potentiometer with I²C/SPI interface, 10 kΩ end-to-end resistance, ±6 mA wiper current capability, and 35 ppm/°C temperature coefficient - used for precision gain/offset trimming in programmable power supplies and LCD contrast control.
For engineers reviewing the AD5141BCPZ10-RL7 datasheet, AD5141BCPZ10-RL7 pinout, AD5141BCPZ10-RL7 application, or AD5141BCPZ10-RL7 equivalent, key selection criteria include guaranteed ±8% resistor tolerance, 3 MHz bandwidth at 10 kΩ, fast 75 µs power-up restore time, and automotive-qualified 3 mm × 3 mm LFCSP packaging for space-constrained embedded systems.
Technical Context
The AD5141BCPZ10-RL7 implements a segmented resistor ladder with EEPROM-backed RDAC register, supporting both rheostat and potentiometer divider modes. Its linear gain setting mode enables independent RAW and RWB string programming for precise resistor matching across channels.
It operates from single (2.3 V to 5.5 V) or dual (±2.25 V to ±2.75 V) supplies, with independent logic supply (1.8 V to 5.5 V), enabling bipolar signal adjustment and compatibility with low-voltage microcontrollers. The device features hardware write protection (WP), asynchronous load (LRDAC), and INDEP-mode initialization for deterministic startup behavior.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8-bit (256 positions) - enables fine-grained analog tuning with 0.39% step resolution over full scale |
| End-to-end resistance | 10 kΩ ±8% - fixed nominal value with guaranteed tolerance for predictable gain scaling |
| Wiper current rating | ±6 mA - supports direct connection to op-amp feedback paths or LED bias circuits without external buffering |
| Temperature coefficient | 35 ppm/°C - ensures stable resistance over −40°C to +125°C industrial range, critical for open-loop calibration |
| Bandwidth | 3 MHz (RAB = 10 kΩ) - preserves signal integrity in AC-coupled filter and delay applications up to audio frequencies |
| Power-up restore time | <75 µs - guarantees immediate functional state after supply ramp, eliminating startup glitches in real-time systems |
| EEPROM endurance | 100,000 cycles - supports field firmware updates and recalibration without premature wear-out |
Pinout & Package
AD5141BCPZ10-RL7 uses a 16-lead, 3 mm × 3 mm LFCSP package with exposed thermal pad. Pin assignments are validated per Analog Devices Rev. F datasheet Figure 7 and Table 10.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Logic ground reference | Common return for digital interface and internal logic; must be decoupled separately from power grounds |
| A (Pin 2) | RDAC terminal A | High-side resistor endpoint; voltage range extends from VSS to VDD, enabling bipolar operation |
| W (Pin 3) | Wiper output | Programmable tap point; 40 Ω typical wiper resistance allows direct pin-to-pin replacement of mechanical pots |
| B (Pin 4) | RDAC terminal B | Low-side resistor endpoint; polarity agnostic vs. A/W, supporting bidirectional signal routing |
| VSS (Pin 5) | Negative supply rail | Required for dual-supply operation; decoupling with 0.1 µF + 10 µF capacitors minimizes noise coupling |
| SYNC/ADDR0 (Pin 6) | SPI sync input / I²C address bit 0 | Active-low SPI latch enable; when DIS = 1, functions as LSB address for multi-device I²C bus |
| RESET (Pin 7) | Hardware reset | Forces RDAC register reload from EEPROM; active-low, debounced internally |
| DIS (Pin 8) | Digital interface select | Configures protocol: GND = SPI, VLOGIC = I²C; must not float to prevent undefined behavior |
| VDD (Pin 9) | Positive supply rail | Primary analog/digital supply; requires local 0.1 µF + 10 µF decoupling for stable operation |
| VLOGIC (Pin 10) | Independent logic supply | Supports 1.8 V–5.5 V logic levels - enables interfacing with 1.8 V MCUs while powering analog core at 5 V |
| SCLK/SCL (Pin 11) | Clock input (SPI) / serial clock (I²C) | Shared pin; timing compliant with I²C fast mode (400 kHz) and SPI up to 25 MHz |
| SDI/SDA (Pin 12) | Data input (SPI) / bidirectional data (I²C) | Configured by DIS pin; supports standard I²C pull-up or SPI push-pull driving |
| WP (Pin 13) | Write protect | Hardware lock for EEPROM and RDAC register; active-low; tie to VLOGIC if unused |
| SDO/ADDR1 (Pin 14) | Data output (SPI) / I²C address bit 1 | Open-drain SDO requires external pull-up; in I²C mode, sets MSB of 2-bit slave address |
| INDEP (Pin 15) | Linear gain mode enable | Hardwired at power-up to configure independent RAW/RWB strings; cannot be disabled in software |
| LRDAC (Pin 16) | Load RDAC register | Asynchronous update trigger; active-low pulse transfers shift register contents to working RDAC |
Key Features
| Feature | Design Value |
|---|---|
| Nonvolatile EEPROM storage | Persists wiper position across power cycles; 50-year data retention at 25°C, qualified for automotive use |
| Independent logic supply (VLOGIC) | Enables mixed-voltage system design - e.g., 1.8 V MCU controlling 5 V analog signal path |
| Linear gain setting mode | Allows separate programming of RAW and RWB resistors, enabling precise ratio-matched attenuation or gain |
| Dual-supply operation (±2.25 V to ±2.75 V) | Supports true bipolar signal adjustment without level-shifting circuitry in sensor front-ends |
| Hardware write protection (WP) | Prevents accidental EEPROM corruption during firmware updates or ESD events - critical for field-deployed equipment |
| Automotive qualification | Qualified per AEC-Q100 Grade 1 (−40°C to +125°C), suitable for infotainment, ADAS, and body electronics |
Applications
| Portable Electronics Level Adjustment | LCD Panel Brightness Control |
|---|---|
Use Scenario: Adjusting audio volume or microphone gain in battery-powered handheld devices with minimal PCB area. IC Role / Device Role / Timing Role: Acts as digitally controlled variable resistor in op-amp feedback loop or attenuator network. Use Value: 256-step resolution and 35 ppm/°C tempco ensure consistent user-perceived volume across temperature and battery discharge. |
Use Scenario: Dynamically setting backlight brightness in automotive instrument clusters under varying ambient light conditions. IC Role / Device Role / Timing Role: Configures current-limiting resistor in LED driver feedback path to regulate luminance. Use Value: ±6 mA wiper current directly drives LED bias circuits; nonvolatile memory retains last-set brightness after ignition cycle. |
| Programmable Power Supplies | Programmable Filters and Time Constants |
Use Scenario: Setting output voltage of DC-DC converters or linear regulators in modular test equipment with remote configuration. IC Role / Device Role / Timing Role: Replaces manual trimmer in feedback divider network to enable software-defined output regulation. Use Value: Guaranteed ±8% end-to-end tolerance eliminates need for post-calibration trimming; 75 µs power-up restore ensures immediate regulation. |
Use Scenario: Tuning cutoff frequency of active RC filters in medical instrumentation requiring adaptive signal conditioning. IC Role / Device Role / Timing Role: Sets R in RC time constant networks or adjusts feedback resistance in Sallen-Key topologies. Use Value: 3 MHz bandwidth preserves phase linearity up to 100 kHz; low THD (−80 dB) maintains signal fidelity in diagnostic waveforms. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5121BCPZ10-RL7 | 128-position resolution (7-bit), identical 10 kΩ resistance, same LFCSP package and pinout | Lower resolution limits fine-tuning granularity in high-precision gain control loops | Select when 128 steps suffice and cost sensitivity outweighs resolution needs |
| MCP45HV51-103E/MS | 10 kΩ, 256-position, but only SPI interface; no I²C support; higher 100 ppm/°C tempco | Lacks dual-interface flexibility and temperature stability for automotive or precision analog systems | Choose for SPI-only designs where lower tempco is noncritical and budget constraints apply |
Compared with AD5141BCPZ10-RL7, AD5121BCPZ10-RL7 offers identical form-factor and interface but reduced resolution, while MCP45HV51-103E/MS trades I²C compatibility and thermal stability for lower unit cost in SPI-centric applications.
Availability
AD5141BCPZ10-RL7 is available at Aetrix Electronics and suitable for programmable power supplies, LCD panel controls, portable electronics level adjustment, and programmable filter design requiring stable component supply across automotive and industrial lifecycles.
Supply support for AD5141BCPZ10-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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The AD51xx family delivers nonvolatile, high-accuracy digital potentiometers optimized for precision analog control in harsh environments - designed specifically for automotive-grade reliability and open-loop calibration stability.
FAQ
What interface protocols does the AD5141BCPZ10-RL7 support?
The AD5141BCPZ10-RL7 supports both I²C and SPI interfaces via the DIS pin configuration. When DIS = 0 (GND), it operates in SPI mode with SYNC, SCLK, SDI, and SDO signals. When DIS = 1 (VLOGIC), it switches to I²C mode using SCL and SDA, with ADDR0/ADDR1 pins defining the 2-bit slave address. Both protocols are fully documented in the Rev. F datasheet timing tables.
Does the AD5141BCPZ10-RL7 retain its wiper setting after power loss?
Yes, the AD5141BCPZ10-RL7 retains its wiper position in on-chip EEPROM. Upon power-up, the stored value is automatically loaded into the RDAC register within 75 µs. This nonvolatile behavior ensures repeatable operation across power cycles without host MCU intervention - a key feature confirmed in the General Description and Power-Up Sequence sections of the datasheet.
Can the AD5141BCPZ10-RL7 operate with a 1.8 V logic supply while using a 5 V analog supply?
Yes, the AD5141BCPZ10-RL7 supports independent logic and analog supplies. VLOGIC may range from 1.8 V to 5.5 V, while VDD can be set to 5 V - enabling direct interfacing with 1.8 V microcontrollers without level shifters. This capability is explicitly specified in Table 2 and Table 3 under "Logic Supply Range" and verified in the Functional Block Diagram and Interface Timing sections.
What is the maximum continuous current the AD5141BCPZ10-RL7 wiper can handle?
The AD5141BCPZ10-RL7 wiper supports ±6 mA continuous current when configured with 10 kΩ end-to-end resistance, as specified in Table 3 under "Maximum Continuous Current". This rating applies to terminals A, B, and W simultaneously and is validated across the full −40°C to +125°C operating range - sufficient for driving op-amp feedback networks or LED bias paths without external buffering.
Is the AD5141BCPZ10-RL7 qualified for automotive applications?
Yes, the AD5141BCPZ10-RL7 is explicitly qualified for automotive applications per AEC-Q100 Grade 1 standards. The datasheet states "Qualified for automotive applications" in the FEATURES section and confirms operation from −40°C to +125°C, 100,000 EEPROM endurance cycles, and 50-year data retention - all validated under JEDEC stress conditions and referenced in the Automotive Products section.
AD5141BCPZ10-RL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-WFQFN Exposed Pad, CSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Taper:
- Linear
- Configuration:
- Potentiometer
- Number of Circuits:
- 1
- Number of Taps:
- 256
- Resistance (Ohms):
- 10k
- Interface:
- I2C, SPI
- Memory Type:
- Non-Volatile
- Voltage - Supply:
- 2.3V ~ 5.5V, ±2.25V ~ 2.75V
- Features:
- Selectable Address
- Tolerance:
- ±8%
- Temperature Coefficient (Typ):
- 35ppm/°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 16-LFCSP (3x3)
- Operating Temperature:
- -40°C ~ 125°C
- Resistance - Wiper (Ohms) (Typ):
- 55
AD5141BCPZ10-RL7 FAQ
1.How can I place an order for AD5141BCPZ10-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD5141BCPZ10-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 AD5141BCPZ10-RL7 reliable?
The price and inventory of AD5141BCPZ10-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD5141BCPZ10-RL7 is usually 5 days.
3.What payment methods are accepted for AD5141BCPZ10-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD5141BCPZ10-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD5141BCPZ10-RL7?
AD5141BCPZ10-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD5141BCPZ10-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 AD5141BCPZ10-RL7?
For technical support, including AD5141BCPZ10-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD5141BCPZ10-RL7 requirements.
6.How does Aetrix verify that AD5141BCPZ10-RL7 is sourced from the original manufacturer or authorized distributors?
All AD5141BCPZ10-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 AD5141BCPZ10-RL7 meets industry standards.
7.What is the process for return or replacement of AD5141BCPZ10-RL7?
All AD5141BCPZ10-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD5141BCPZ10-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 AD5141BCPZ10-RL7 part is unused and in its original packaging.
Return procedure for AD5141BCPZ10-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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