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Renesas X9418WS24-2.7T1
- Part No.:
- X9418WS24-2.7T1
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 24-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
X9418WS24-2.7T1.pdf
- Description:
- IC DGTL POT 10KOHM 64TAP 24SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,754
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Product details
Overview
X9418WS24-2.7T1 from Intersil is a dual digitally controlled potentiometer (XDCP™) with 2-wire I²C-compatible interface, 64-tap resolution per pot, ±2.7V to ±5.5V analog supply range (V+/V−), and 10 kΩ end-to-end resistance. It integrates two independent resistor arrays, volatile wiper counter registers, and four nonvolatile data registers per channel for battery-powered parameter tuning in precision analog signal paths.
For engineers reviewing the X9418WS24-2.7T1 datasheet, X9418WS24-2.7T1 pinout, X9418WS24-2.7T1 application, or X9418WS24-2.7T1 equivalent, key selection criteria include dual-potentiometer integration, 2.7V–5.5V VCC compatibility, industrial temperature range (−40°C to +85°C), SOIC-24 package, and hardware write-protect (WP) functionality for nonvolatile register safety.
Technical Context
The X9418WS24-2.7T1 implements two independent 63-segment resistor arrays with CMOS-switched wipers controlled by 6-bit volatile Wiper Counter Registers (WCR). Each potentiometer supports direct read/write of wiper position and stores up to four user-defined settings in nonvolatile Data Registers (DR0–DR3), with DR0 auto-loaded at power-up.
It uses a standard 2-wire bus protocol with slave address configurable via A0–A3 pins, supports increment/decrement wiper control via SCL/SDA timing, and features hardware write protection (WP) to prevent unintended EEPROM writes. Analog section operates from split supplies (V+ = +2.7V to +5.5V, V− = −5.5V to −2.7V), enabling bipolar signal conditioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| End-to-end resistance | 10 kΩ per potentiometer - defines full-scale voltage division ratio and load interaction in divider configurations. |
| Resolution | 64 taps (6-bit) - enables 1.56% step resolution for fine-grained analog gain or offset adjustment. |
| VCC operating range | 2.7V to 5.5V - supports single-supply operation from Li-ion batteries or 3.3V/5V logic rails without level shifting. |
| Analog supply range | V+ = +2.7V to +5.5V, V− = −5.5V to −2.7V - allows true bipolar signal handling (±2.7V swing minimum) in op-amp feedback networks. |
| Nonvolatile endurance | 100,000 data changes per bit per register - ensures long-term reliability in field-updatable calibration systems. |
| Standby current | <1 µA - enables multi-year operation in energy-constrained sensor nodes or portable instrumentation. |
| Interface | 2-wire (I²C-compatible) serial bus - simplifies microcontroller integration with only SCL/SDA lines and no dedicated SPI peripherals required. |
Pinout & Package
Package: 24-pin SOIC (300-mil, M24.3 footprint), RoHS-compliant, tape-and-reel (T1 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | System supply voltage | Provides power to digital interface and control logic; must be powered before V+/V− to ensure proper register recall. |
| VSS | System ground reference | Digital ground return; isolated from analog ground plane in mixed-signal PCB layout to minimize noise coupling. |
| SCL | Serial clock input | Master-generated clock synchronizing all I²C transactions; open-drain requires external pull-up resistor (typically 2.2–10 kΩ). |
| SDA | Serial data bidirectional line | Open-drain bus shared across multiple devices; requires same pull-up as SCL and supports ACK polling during nonvolatile writes. |
| A0–A3 | Device address inputs | Set LSBs of 8-bit slave address (0101xxxx); enable up to 16 X9418 devices on one bus without address conflict. |
| WP | Hardware write protect | Low-active signal blocking nonvolatile writes to DR0–DR3; used to lock factory calibration values during system operation. |
| VH0/RH0, VL0/RL0, VW0/RW0 | Potentiometer 0 terminals | High-side, low-side, and wiper connections for first XDCP; electrically equivalent to mechanical potentiometer terminals. |
| VH1/RH1, VL1/RL1, VW1/RW1 | Potentiometer 1 terminals | Independent second potentiometer interface; supports simultaneous or staggered adjustment of two analog parameters. |
| V+, V− | Analog supply rails | Power the resistor arrays and wiper switches; must be stable before applying signals to VH/VL/VW pins to avoid latch-up. |
| NC | No connection | Unbonded pins (pins 11, 15, 18, 19, 21, 22, 23); must remain unconnected and unstubbed in PCB layout. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent XDCPs | Two 10 kΩ, 64-tap potentiometers in one SOIC-24 package reduce board space and BOM count versus discrete solutions. |
| Nonvolatile data storage | Eight 6-bit registers (four per pot) retain wiper settings for 100 years, eliminating need for external EEPROM in calibration-critical systems. |
| Split-supply analog operation | V+ and V− rails support ±2.7V signal swing, enabling direct use in bipolar op-amp circuits (e.g., offset trim, hysteresis setting) without level shifters. |
| Hardware write protection | WP pin disables nonvolatile writes when asserted, preventing accidental overwrites of calibrated DR0 values during field updates. |
| Increment/decrement mode | Real-time wiper stepping via SCL/SDA timing allows smooth, glitch-free analog tuning without host CPU intervention or register reads. |
Applications
| Audio Signal Level Control | Programmable Voltage Reference |
|---|---|
|
Use Scenario: Adjusting gain and balance in stereo audio preamplifiers with microcontroller-based UI. IC Role / Device Role / Timing Role: Dual potentiometer emulating mechanical volume/balance controls; each channel independently programmed via I²C. Use Value: Eliminates manual trimpots and mechanical wear; enables remote firmware updates to audio profiles without hardware change. |
Use Scenario: Setting precise DC bias points in ADC front-ends or sensor excitation circuits. IC Role / Device Role / Timing Role: Two-terminal variable resistor configuring reference voltage dividers for rail-to-rail op-amps. Use Value: Achieves 1.56% step resolution and retains calibrated offsets across power cycles, improving measurement repeatability. |
| Industrial Sensor Calibration | Comparator Hysteresis Tuning |
|
Use Scenario: Field calibration of 4–20 mA transmitter zero/span using handheld configurator. IC Role / Device Role / Timing Role: Three-terminal potentiometer in loop-powered current source feedback path. Use Value: Nonvolatile DR storage preserves calibration constants through device replacement; WP pin prevents tampering during operation. |
Use Scenario: Dynamically adjusting hysteresis window in temperature monitoring comparators. IC Role / Device Role / Timing Role: Dual potentiometer setting upper/lower thresholds in Schmitt trigger feedback network. Use Value: Enables adaptive hysteresis based on ambient conditions; bipolar V+/V− support accommodates negative reference rails. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digitally controlled potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5242BRUZ10 | Single 10 kΩ pot, I²C interface, 256-tap resolution, 2.7–5.5V VDD, no split analog supplies. | Lacks dual-pot integration and bipolar analog capability; suitable only for unipolar, single-channel adjustment. | Select when higher resolution (0.39%) is prioritized over dual-channel operation and bipolar signal support. |
| MCP42010-I/P | Dual 10 kΩ pot, SPI interface, 256-tap resolution, 2.7–5.5V VDD, no V+/V− rails. | Requires SPI peripheral instead of I²C; no hardware write-protect or nonvolatile retention beyond EEPROM endurance spec. | Choose for SPI-based MCU platforms where higher resolution and faster update rates outweigh loss of analog supply flexibility. |
Compared with AD5242BRUZ10 and MCP42010-I/P, the X9418WS24-2.7T1 uniquely delivers dual-pot functionality with true bipolar analog operation (V+/V−), hardware write protection, and guaranteed 100-year data retention-making it optimal for industrial calibration and precision analog control where reliability and signal range are critical.
Availability
X9418WS24-2.7T1 is available at Aetrix Electronics and suitable for industrial sensor calibration, programmable power supply trimming, and audio equipment manufacturing requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for X9418WS24-2.7T1 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
Intersil (now part of Renesas Electronics) is a semiconductor company specializing in precision analog, power management, and interface ICs for industrial, aerospace, and communications markets.
The X9418 product line was designed for high-reliability, low-power analog parameter adjustment in battery-operated and calibration-critical systems, emphasizing nonvolatile storage, split-supply operation, and robust I²C interoperability.
FAQ
What is the operating temperature range for the X9418WS24-2.7T1?
The X9418WS24-2.7T1 is rated for industrial temperature operation from −40°C to +85°C. This range is confirmed in the Ordering Information table on page 2 of FN8194 Rev 2.00, where "X9418WS24I-2.7" denotes the industrial-grade variant. The "I" suffix in the part number explicitly specifies this extended thermal envelope, ensuring reliable performance in harsh environments such as factory automation or outdoor instrumentation.
Does the X9418WS24-2.7T1 support true bipolar analog operation?
Yes, the X9418WS24-2.7T1 supports true bipolar analog operation via dedicated V+ and V− pins. Per the datasheet's Recommended Operating Conditions (page 11), V+ ranges from +2.7V to +5.5V and V− from −5.5V to −2.7V, enabling ±2.7V signal handling across both potentiometers. This allows direct use in op-amp circuits requiring negative reference rails-unlike unipolar digital pots that rely solely on VCC/GND.
How many nonvolatile memory registers does the X9418WS24-2.7T1 include?
The X9418WS24-2.7T1 includes eight nonvolatile 6-bit Data Registers-four per potentiometer (DR0–DR3). As stated in the Features list (page 1) and Register Descriptions (page 8), these store wiper positions or system parameters with 100-year data retention and 100,000-cycle endurance. DR0 is automatically loaded into the Wiper Counter Register at power-up, providing deterministic startup behavior.
Is hardware write protection available on the X9418WS24-2.7T1?
Yes, the X9418WS24-2.7T1 includes a dedicated hardware write-protect pin (WP). When WP is driven LOW, all nonvolatile writes to the Data Registers (DR0–DR3) are blocked-even if valid I²C commands are issued. This feature is documented in the Pin Descriptions (page 2) and Principles of Operation (page 3), ensuring factory-calibrated values remain immutable during field operation.
What package type and lead finish does the X9418WS24-2.7T1 use?
The X9418WS24-2.7T1 uses a 24-lead SOIC package (300-mil width, M24.3 drawing) with Pb-free plus anneal termination (RoHS compliant). This is specified in the Ordering Information table (page 2) under "X9418WS24I-2.7" and "X9418WS24IZ-2.7", where "WS" denotes SOIC and "Z" indicates Pb-free. The "T1" suffix confirms tape-and-reel packaging for automated assembly.
X9418WS24-2.7T1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- XDCP™
- Package/Case:
- 24-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Taper:
- Linear
- Configuration:
- Potentiometer
- Number of Circuits:
- 2
- Number of Taps:
- 64
- Resistance (Ohms):
- 10k
- Interface:
- I2C
- Memory Type:
- Non-Volatile
- Voltage - Supply:
- ±2.7V ~ 5.5V
- Features:
- Selectable Address
- Tolerance:
- ±20%
- Temperature Coefficient (Typ):
- ±300ppm/°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 24-SOIC
- Operating Temperature:
- 0°C ~ 70°C
- Resistance - Wiper (Ohms) (Typ):
- 150
X9418WS24-2.7T1 FAQ
1.How can I place an order for X9418WS24-2.7T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for X9418WS24-2.7T1 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 X9418WS24-2.7T1 reliable?
The price and inventory of X9418WS24-2.7T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X9418WS24-2.7T1 is usually 5 days.
3.What payment methods are accepted for X9418WS24-2.7T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9418WS24-2.7T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9418WS24-2.7T1?
X9418WS24-2.7T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9418WS24-2.7T1 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 X9418WS24-2.7T1?
For technical support, including X9418WS24-2.7T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9418WS24-2.7T1 requirements.
6.How does Aetrix verify that X9418WS24-2.7T1 is sourced from the original manufacturer or authorized distributors?
All X9418WS24-2.7T1 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 X9418WS24-2.7T1 meets industry standards.
7.What is the process for return or replacement of X9418WS24-2.7T1?
All X9418WS24-2.7T1 units undergo pre-shipment inspection (PSI). If there is an issue with X9418WS24-2.7T1, 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 X9418WS24-2.7T1 part is unused and in its original packaging.
Return procedure for X9418WS24-2.7T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
X9418WS24-2.7T1 Tags
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