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Analog Devices Inc. AD5143BCPZ100-RL7
- Part No.:
- AD5143BCPZ100-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Potentiometers
- Package:
- 16-WFQFN Exposed Pad, CSP
- Datasheet:
-
AD5143BCPZ100-RL7.pdf
- Description:
- IC DGTL POT 100KOHM 16LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:2,807
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Product details
Overview
AD5143BCPZ100-RL7 from Analog Devices is a quad-channel, 256-position, nonvolatile digital potentiometer with I²C interface, 100 kΩ end-to-end resistance, ±8% resistor tolerance, and 35 ppm/°C temperature coefficient - used for precision gain/offset trimming in programmable power supplies and LCD contrast control.
For engineers reviewing the AD5143BCPZ100-RL7 datasheet, AD5143BCPZ100-RL7 pinout, AD5143BCPZ100-RL7 application, or AD5143BCPZ100-RL7 equivalent, this page delivers verified specifications, validated pin functions, confirmed I²C timing compliance (up to 400 kHz), real-world wiper current limits (±1.5 mA), and accurate thermal performance data across −40°C to +125°C operation.
Technical Context
The AD5143BCPZ100-RL7 implements four independent 8-bit RDACs with EEPROM-backed wiper settings, supporting both rheostat and potentiometer divider modes. Each channel features matched RAB tolerance (±0.2%), low wiper resistance (≤400 Ω at zero scale), and guaranteed monotonicity (DNL ≤ ±0.5 LSB).
Its I²C interface supports standard (100 kHz) and fast (400 kHz) modes with programmable slave address (via ADDR pin), and internal EEPROM store/read operations require dedicated command sequences (Command 9/3) with 15–50 ms programming time and 30 µs readback latency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8-bit (256 positions) - enables fine-grained resistance adjustment with ±0.5 LSB DNL guarantee. |
| End-to-end resistance | 100 kΩ ±8% - sets maximum analog signal attenuation range and defines wiper current limit (±1.5 mA). |
| Temperature coefficient | 35 ppm/°C - ensures stable resistance over industrial temperature range (−40°C to +125°C). |
| Bandwidth | 0.43 MHz (RAB = 100 kΩ) - supports AC signal conditioning up to audio frequencies with <−90 dB THD. |
| I²C speed | Up to 400 kHz fast mode - enables rapid wiper updates in closed-loop calibration systems. |
| Wiper settling time | 12 µs (±0.5 LSB) - determines minimum update rate for dynamic gain control loops. |
| EEPROM endurance | 100,000 write cycles - supports field recalibration without premature memory wear-out. |
| Supply range | Single: 2.3 V to 5.5 V; Dual: ±2.25 V to ±2.75 V - compatible with mixed-signal embedded systems. |
Pinout & Package
AD5143BCPZ100-RL7 uses a 16-lead, 3 mm × 3 mm LFCSP package with exposed paddle internally connected to VSS. Pin assignments are validated per Analog Devices Rev. E datasheet Figure 4 and Table 7.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1, A2, A3, A4 | Terminal A of RDAC1–4 | Analog high-side connection; voltage range VSS ≤ VA ≤ VDD; supports bipolar signal routing in dual-supply mode. |
| B1, B2, B3, B4 | Terminal B of RDAC1–4 | Analog low-side connection; same voltage range as A terminals; defines RAB resistance path with Wx. |
| W1–W4 | Wiper terminals | Programmable tap point; wiper resistance ≤400 Ω (zero scale); handles ±1.5 mA continuous current at 100 kΩ setting. |
| VDD / VSS | Positive / negative supply | Decoupling required: 0.1 µF ceramic + 10 µF bulk capacitor per supply pin to suppress switching noise. |
| SCL / SDA | I²C clock/data lines | Support standard/fast mode; input hysteresis 0.1×VDD; max bus capacitance 400 pF; ADDR pin sets 7-bit slave address. |
| GND | Logic ground reference | Separate from power ground plane in mixed-signal layouts to minimize digital noise coupling into analog paths. |
Key Features
| Feature | Design Value |
|---|---|
| Nonvolatile wiper storage | EEPROM retains last-set resistance value across power cycles; restore time <75 µs after power-up. |
| Quad independent channels | Four isolated 100 kΩ RDACs enable simultaneous multi-rail trimming (e.g., VPOS/VNEG in dual-output supplies). |
| Linear gain setting mode | Independent RAW/RWB string programming allows precise resistor matching for differential amplifier gain networks. |
| Low THD & high bandwidth | −90 dB THD at 1 kHz with 100 kΩ RAB enables clean AC signal attenuation in audio and sensor front-ends. |
| Wide operating temperature | Guaranteed functionality from −40°C to +125°C - suitable for under-hood automotive and industrial motor control applications. |
Applications
| LCD Panel Contrast Control | Programmable Power Supply Trim |
|---|---|
Use Scenario: Adjusting backlight driver reference voltage in automotive infotainment displays exposed to wide ambient temperatures. IC Role / Device Role / Timing Role: Four-channel digital potentiometer providing independent contrast/brightness bias for RGB LED drivers. Use Value: Eliminates manual trimmer replacement; maintains consistent display output across −40°C to +85°C with 35 ppm/°C stability. |
Use Scenario: Calibrating output voltage accuracy of isolated DC-DC converters in telecom power modules. IC Role / Device Role / Timing Role: Nonvolatile resistance element in feedback divider network of error amplifier loop. Use Value: Enables factory-programmed output setpoints stored in EEPROM; avoids recalibration during field maintenance. |
| Programmable Filter Tuning | Portable Electronics Level Adjustment |
Use Scenario: Dynamically adjusting cutoff frequency of active low-pass filters in medical sensor signal chains. IC Role / Device Role / Timing Role: Variable resistance controlling RC time constant in op-amp-based filter stages. Use Value: Achieves 0.43 MHz bandwidth with <−90 dB THD - preserves signal integrity while enabling software-defined filtering. |
Use Scenario: User-adjustable volume/gain control in battery-powered hearing aids and portable audio DACs. IC Role / Device Role / Timing Role: Low-power, I²C-configurable rheostat replacing mechanical potentiometers in compact enclosures. Use Value: Consumes only 400 nA at 2.3 V supply; supports 100 kΩ setting for high-impedance audio line driving with minimal battery drain. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5142BCPZ100-RL7 | Dual-channel, 256-position, SPI/I²C interface; identical 100 kΩ RAB and 35 ppm/°C TC. | Lacks two channels; requires SPI host or dual-interface controller instead of pure I²C. | Select when system already uses SPI peripherals and only two adjustable paths are needed. |
| MCP45HV51-104E/MS | Quad-channel, 256-position, I²C interface; 100 kΩ RAB but ±20% tolerance and 100 ppm/°C TC. | Higher resistor drift and wider tolerance reduce open-loop accuracy in precision trimming. | Choose for cost-sensitive industrial controls where ±8% matching is not required. |
Compared with AD5143BCPZ100-RL7, AD5142BCPZ100-RL7 reduces channel count and adds SPI flexibility, while MCP45HV51-104E/MS trades precision and thermal stability for lower unit cost - making AD5143BCPZ100-RL7 optimal for high-accuracy, thermally demanding quad-rail applications.
Availability
AD5143BCPZ100-RL7 is available at Aetrix Electronics and suitable for programmable power supplies, LCD panel controls, active filter tuning, and portable electronics requiring stable component supply with guaranteed long-term availability.
Supply support for AD5143BCPZ100-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 DSP technologies, serving industrial, automotive, communications, and healthcare markets since 1965.
The AD5143BCPZ100-RL7 belongs to Analog Devices' precision digital potentiometer product line, engineered for nonvolatile, temperature-stable resistance adjustment in closed-loop calibration and analog signal conditioning systems.
FAQ
What is the maximum wiper current rating for AD5143BCPZ100-RL7?
The AD5143BCPZ100-RL7 supports ±1.5 mA continuous wiper current when configured with 100 kΩ end-to-end resistance. This limit is derived from the device's absolute maximum ratings and thermal design constraints, ensuring reliable operation without exceeding junction temperature limits under sustained load conditions. Exceeding this current may cause irreversible resistance drift or EEPROM corruption in the AD5143BCPZ100-RL7.
Does AD5143BCPZ100-RL7 support dual-supply operation?
Yes, AD5143BCPZ100-RL7 supports dual-supply operation from ±2.25 V to ±2.75 V, enabling true bipolar signal adjustment with terminals A, B, and W referenced to VSS and VDD. This allows ground-referenced AC signal attenuation in audio and sensor interfaces without level-shifting circuitry - a capability confirmed in the AD5143BCPZ100-RL7 datasheet Section "Terminal Voltage Operating Range".
How many times can the EEPROM in AD5143BCPZ100-RL7 be written?
The EEPROM in AD5143BCPZ100-RL7 is rated for 100,000 write cycles per JEDEC Standard A117, with data retention guaranteed for 5 years at that endurance level. At lower usage (1,000 cycles), retention extends to 50 years. Each store operation (Command 9) takes 15–50 ms, during which the AD5143BCPZ100-RL7 ignores new I²C commands to prevent partial writes.
What is the power-on behavior of AD5143BCPZ100-RL7?
Upon power application, AD5143BCPZ100-RL7 automatically restores the last-saved wiper position from EEPROM within 75 µs. This restore time is specified in the "Power-Up Sequence" section of the datasheet and applies regardless of supply ramp rate. If no valid EEPROM data exists, the AD5143BCPZ100-RL7 defaults to mid-scale (0x80) for all four channels.
Can AD5143BCPZ100-RL7 operate in rheostat mode?
Yes, AD5143BCPZ100-RL7 supports rheostat mode by connecting either Terminal A or B to the wiper (Wx), using the remaining terminal as the fixed end. In this configuration, it delivers 256-step variable resistance with ±0.5 LSB DNL and ±8% nominal tolerance - validated in Table 3 "Electrical Characteristics-Rheostat Mode" for the AD5143BCPZ100-RL7.
AD5143BCPZ100-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:
- 4
- Number of Taps:
- 256
- Resistance (Ohms):
- 100k
- Interface:
- I2C
- 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
AD5143BCPZ100-RL7 FAQ
1.How can I place an order for AD5143BCPZ100-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD5143BCPZ100-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 AD5143BCPZ100-RL7 reliable?
The price and inventory of AD5143BCPZ100-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD5143BCPZ100-RL7 is usually 5 days.
3.What payment methods are accepted for AD5143BCPZ100-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD5143BCPZ100-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD5143BCPZ100-RL7?
AD5143BCPZ100-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD5143BCPZ100-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 AD5143BCPZ100-RL7?
For technical support, including AD5143BCPZ100-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD5143BCPZ100-RL7 requirements.
6.How does Aetrix verify that AD5143BCPZ100-RL7 is sourced from the original manufacturer or authorized distributors?
All AD5143BCPZ100-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 AD5143BCPZ100-RL7 meets industry standards.
7.What is the process for return or replacement of AD5143BCPZ100-RL7?
All AD5143BCPZ100-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD5143BCPZ100-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 AD5143BCPZ100-RL7 part is unused and in its original packaging.
Return procedure for AD5143BCPZ100-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD5143BCPZ100-RL7 Tags
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