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Analog Devices Inc. AD5141BCPZ100-RL7
- Part No.:
- AD5141BCPZ100-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Potentiometers
- Package:
- 16-WFQFN Exposed Pad, CSP
- Datasheet:
-
AD5141BCPZ100-RL7.pdf
- Description:
- IC DGTL POT 100KOHM 16LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:4,842
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Product details
Overview
AD5141BCPZ100-RL7 from Analog Devices is a single-channel, 256-position, nonvolatile digital potentiometer with I²C/SPI interface, 100 kΩ end-to-end resistance, ±8% resistor tolerance, and 35 ppm/°C temperature coefficient. It operates from −40°C to +125°C and supports dual-supply (±2.25 V to ±2.75 V) or single-supply (2.3 V to 5.5 V) configurations. It is used in programmable power supplies for precise output voltage trimming.
For engineers reviewing the AD5141BCPZ100-RL7 datasheet, AD5141BCPZ100-RL7 pinout, AD5141BCPZ100-RL7 application, or AD5141BCPZ100-RL7 equivalent, key selection criteria include wiper current rating (±1.5 mA at 100 kΩ), EEPROM endurance (100 kcycles), fast settling time (12 µs), and automotive qualification per AEC-Q100.
Technical Context
The AD5141BCPZ100-RL7 implements a segmented thin-film resistor array with CMOS switch matrix and on-chip EEPROM for nonvolatile wiper position storage. Its RDAC architecture supports both rheostat (A–W or B–W) and potentiometer divider (A–W–B) modes, with independent programming of RAW and RWB strings enabled by the INDEP pin.
It features dual digital interfaces: SPI (CPOL=0/1, CPHA=0/1) and I²C (standard/fast mode), selected via the DIS pin. The LRDAC pin enables asynchronous update of the RDAC register from the input shift register, decoupling command execution from clock timing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 256 positions (8-bit), enabling 0.39% step resolution across full-scale resistance |
| End-to-end resistance | 100 kΩ ±8%, supporting high-impedance biasing and low-power adjustment circuits |
| Wiper current rating | ±1.5 mA continuous (100 kΩ), limiting max voltage drop across wiper to ≤150 mV at full scale |
| Bandwidth | 0.43 MHz (−3 dB, RAB = 100 kΩ), suitable for DC and low-frequency AC signal conditioning |
| Temperature coefficient | 35 ppm/°C (resistor), ensuring <±0.4% resistance drift over −40°C to +125°C range |
| EEPROM retention | 50 years at 25°C (1000 write cycles); 5 years at 100 kcycles, enabling long-term calibration storage |
| Supply range | VDD/VSS = ±2.25 V to ±2.75 V or 2.3 V to 5.5 V; VLOGIC = 1.8 V to VDD, allowing mixed-voltage system integration |
Pinout & Package
AD5141BCPZ100-RL7 uses a 3 mm × 3 mm, 16-lead LFCSP package with exposed pad (EPAD) for thermal management. Pin 1 is GND; EPAD must be connected to VSS or left unconnected but thermally coupled to PCB copper.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Logic ground reference | Common return for digital interface and internal logic; must be low-impedance connection |
| A (Pin 2) | Resistor terminal A | High-side end of 100 kΩ resistor string; supports bipolar voltage swing (VSS ≤ VA ≤ VDD) |
| W (Pin 3) | Wiper terminal | Programmable tap point; wiper resistance ≤400 Ω at zero/full scale; handles ±1.5 mA |
| B (Pin 4) | Resistor terminal B | Low-side end of resistor string; polarity agnostic relative to A/W; enables bidirectional signal routing |
| VSS (Pin 5) | Negative supply rail | Required for dual-supply operation; decouple with 0.1 µF + 10 µF capacitors |
| SYNC/ADDR0 (Pin 6) | SPI sync input / I²C address bit 0 | Active-low load strobe for SPI; sets LSB of I²C address when DIS = 1 |
| RESET (Pin 7) | Hardware reset | Forces RDAC register reload from EEPROM on falling edge; ties to VLOGIC if unused |
| DIS (Pin 8) | Digital interface select | DIS = 0 → SPI; DIS = 1 → I²C; must not float; defines protocol and pin function mapping |
| VDD (Pin 9) | Positive supply rail | Primary analog/digital power; decouple with 0.1 µF + 10 µF capacitors |
| VLOGIC (Pin 10) | Independent logic supply | 1.8 V to 5.5 V; isolates interface voltage from analog rails; reduces noise coupling |
| SCLK/SCL (Pin 11) | Clock input | Shared SCLK (SPI) or SCL (I²C); edge-triggered; supports up to 400 kHz I²C or >10 MHz SPI |
| SDI/SDA (Pin 12) | Data I/O | SDI (SPI input) or SDA (I²C bidirectional); open-drain for I²C; requires external pull-up |
| WP (Pin 13) | Write protect | Logic-low disables EEPROM and RDAC writes except LRDAC-triggered reload; ties to VLOGIC if unused |
| SDO/ADDR1 (Pin 14) | Data output / I²C address bit 1 | Open-drain SDO (SPI) or MSB of I²C address; requires pull-up for SPI operation |
| INDEP (Pin 15) | Linear gain setting mode enable | Hardwired at power-up to enable independent RAW/RWB programming; cannot be disabled in software |
| LRDAC (Pin 16) | Load RDAC register | Asynchronous latch control; falling edge transfers input register to active RDAC; ties to VLOGIC if unused |
Key Features
| Feature | Design Value |
|---|---|
| Nonvolatile wiper position storage | On-chip EEPROM retains setting after power loss; 100 kcycle endurance supports field recalibration |
| Independent string resistor programming | INDEP pin enables separate RAW and RWB configuration for precision ratio matching in gain-setting circuits |
| Wide supply flexibility | Single- or dual-supply operation with independent VLOGIC allows integration into mixed-voltage systems without level shifters |
| Automotive-grade reliability | Qualified per AEC-Q100 Grade 1 (−40°C to +125°C), including ESD robustness (HBM 4 kV, FICDM 1.25 kV) |
| Low THD and high bandwidth | −90 dB THD at 1 kHz (100 kΩ), enabling clean AC signal attenuation in audio and sensor front-ends |
| Fast power-on restore | EEPROM-to-RDAC load completes in <75 µs, minimizing system startup delay in power supply sequencing |
Applications
| Programmable Power Supply Trim | LCD Contrast Control |
|---|---|
Use Scenario: Adjusting feedback resistor network in DC-DC converter to maintain output voltage accuracy across temperature and aging. IC Role / Device Role / Timing Role: Nonvolatile resistance element in voltage divider; replaces mechanical trimmer for factory calibration and field updates. Use Value: ±8% initial tolerance and 35 ppm/°C TC reduce need for post-calibration compensation; EEPROM retention avoids recalibration during maintenance. |
Use Scenario: Dynamically adjusting contrast voltage for automotive LCD displays under varying ambient light conditions. IC Role / Device Role / Timing Role: Digitally controlled rheostat between backlight driver and display bias node; updated via I²C from MCU. Use Value: 12 µs settling time enables real-time contrast response; 100 kΩ range provides fine-grained control without loading driver output. |
| Programmable Filter Time Constant | Portable Audio Level Adjustment |
Use Scenario: Setting RC time constant in active low-pass filter for motor control feedback loop filtering. IC Role / Device Role / Timing Role: Variable resistor in first-order RC network; configured as rheostat (A–W) with fixed capacitor. Use Value: 0.43 MHz bandwidth preserves signal integrity up to ~100 kHz; low wiper resistance (<400 Ω) minimizes insertion loss. |
Use Scenario: Volume control in battery-powered headphone amplifier where mechanical potentiometers wear out or consume board space. IC Role / Device Role / Timing Role: Potentiometer divider (A–W–B) feeding op-amp inverting input; SPI interface enables MCU-based mute/ramp functions. Use Value: 256-step resolution gives 0.4 dB/step granularity; 1.8 V logic compatibility extends battery life in 2-cell Li-ion systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5121BCPZ100-RL7 | 128-position (7-bit), same 100 kΩ resistance, identical LFCSP package and pinout | Lower resolution limits fine-tuning capability in precision power supply trimming | Select when 0.78% step size suffices and cost sensitivity outweighs resolution needs |
| MCP45HV51-104E/MS | 256-position, 100 kΩ, SPI-only, 5.5 V max VDD, no dual-supply support | Lacks ±2.75 V dual-rail operation and automotive qualification; lower ESD rating (2 kV HBM) | Prefer for cost-sensitive industrial designs without bipolar signal requirements or AEC-Q100 mandate |
Compared with AD5121BCPZ100-RL7, the AD5141BCPZ100-RL7 offers higher resolution for tighter closed-loop control, while MCP45HV51-104E/MS trades automotive robustness and supply flexibility for lower unit cost in single-supply applications.
Availability
AD5141BCPZ100-RL7 is available at Aetrix Electronics and suitable for programmable power supplies, LCD panel controls, programmable filters, and portable audio systems requiring stable component supply across automotive and industrial temperature ranges.
Supply support for AD5141BCPZ100-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, automotive, communications, and healthcare markets.
The AD51xx family delivers nonvolatile digital potentiometers optimized for precision calibration, power management, and signal conditioning in harsh environments-designed for automotive-grade reliability and wide-temperature operation.
FAQ
What is the maximum wiper current rating for AD5141BCPZ100-RL7?
The AD5141BCPZ100-RL7 supports ±1.5 mA continuous wiper current when configured with 100 kΩ end-to-end resistance. This limit ensures safe operation within the device's power dissipation and switch reliability specifications. Exceeding this current may cause irreversible degradation of the wiper contact resistance. The AD5141BCPZ100-RL7 datasheet specifies this value under "Maximum Continuous Current" in Table 3.
Does AD5141BCPZ100-RL7 support dual-supply operation?
Yes, AD5141BCPZ100-RL7 supports true dual-supply operation with VDD ranging from +2.25 V to +2.75 V and VSS from −2.25 V to −2.75 V, enabling ground-referenced bipolar signal adjustment. This allows terminals A, W, and B to swing symmetrically around 0 V, which is essential for AC-coupled audio and sensor signal conditioning. The AD5141BCPZ100-RL7 maintains full functionality-including EEPROM access and interface communication-under dual-supply conditions.
How does the INDEP pin affect AD5141BCPZ100-RL7 operation?
The INDEP pin on AD5141BCPZ100-RL7 enables linear gain setting mode at power-up, allowing independent programming of RAW and RWB resistor strings for precise ratio matching. Once asserted high at startup, INDEP cannot be disabled in software. This feature is critical for applications like programmable instrumentation amplifiers where gain accuracy depends on matched resistor ratios rather than absolute values. The AD5141BCPZ100-RL7 leverages this mode to achieve sub-0.1% matching in calibrated systems.
What is the EEPROM endurance and data retention for AD5141BCPZ100-RL7?
The AD5141BCPZ100-RL7 EEPROM is rated for 100,000 write cycles with 5 years of data retention at that endurance level, or 50 years at 1,000 cycles-per JEDEC Standard A117. Retention degrades with junction temperature and write cycle count; at 125°C junction temperature, lifetime scales inversely with activation energy (1 eV). The AD5141BCPZ100-RL7 uses Flash/EE memory architecture validated for automotive use, making it suitable for infrequent but mission-critical calibration storage.
Can AD5141BCPZ100-RL7 operate with a 1.8 V logic supply?
Yes, AD5141BCPZ100-RL7 supports VLOGIC from 1.8 V to 5.5 V, independent of VDD/VSS. At 1.8 V, input thresholds adjust to 0.8 × VLOGIC (high) and 0.2 × VLOGIC (low), ensuring reliable interface operation with ultra-low-power MCUs. This capability eliminates level-shifting circuitry in battery-powered systems. The AD5141BCPZ100-RL7 maintains full SPI/I²C functionality and timing compliance across the entire VLOGIC range.
AD5141BCPZ100-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):
- 100k
- 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):
- 130
AD5141BCPZ100-RL7 FAQ
1.How can I place an order for AD5141BCPZ100-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD5141BCPZ100-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 AD5141BCPZ100-RL7 reliable?
The price and inventory of AD5141BCPZ100-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD5141BCPZ100-RL7 is usually 5 days.
3.What payment methods are accepted for AD5141BCPZ100-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD5141BCPZ100-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD5141BCPZ100-RL7?
AD5141BCPZ100-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD5141BCPZ100-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 AD5141BCPZ100-RL7?
For technical support, including AD5141BCPZ100-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD5141BCPZ100-RL7 requirements.
6.How does Aetrix verify that AD5141BCPZ100-RL7 is sourced from the original manufacturer or authorized distributors?
All AD5141BCPZ100-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 AD5141BCPZ100-RL7 meets industry standards.
7.What is the process for return or replacement of AD5141BCPZ100-RL7?
All AD5141BCPZ100-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD5141BCPZ100-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 AD5141BCPZ100-RL7 part is unused and in its original packaging.
Return procedure for AD5141BCPZ100-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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