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Renesas X9401WV24IZT1
- Part No.:
- X9401WV24IZT1
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 24-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
X9401WV24IZT1.pdf
- Description:
- IC DGTL POT 10KOHM 64TAP 24TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,763
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Product details
Overview
X9401WV24IZT1 from Intersil is a quad digitally controlled potentiometer (XDCP™) implementing four independent 64-tap resistor arrays with SPI interface, 10 kΩ end-to-end resistance, and nonvolatile wiper position storage. It operates from 2.7 V to 5 V, draws <3 µA in standby, and is used for precision analog trimming in programmable power supplies and sensor calibration circuits.
For engineers reviewing the X9401WV24IZT1 datasheet, X9401WV24IZT1 pinout, X9401WV24IZT1 application, or X9401WV24IZT1 equivalent, key selection considerations include SPI-compatible digital control, 150 Ω typical wiper resistance, 100-year data retention, quad-channel independence, and TSSOP-24 package compatibility with space-constrained industrial PCBs.
Technical Context
The X9401WV24IZT1 integrates four monolithic CMOS resistor arrays-each with 63 discrete segments and 64 tap points-controlled by individual volatile Wiper Counter Registers (WCRs) and backed by four nonvolatile 6-bit Data Registers (DR0–DR3) per channel. Its SPI interface supports read/write of wiper positions and register transfers with hardware write protection via the WP pin.
Each potentiometer functions as either a three-terminal voltage divider or two-terminal variable resistor. Wiper positioning is updated in ≤10 µs after instruction execution, and nonvolatile writes complete in 5–10 ms. The device supports up to four daisy-chained units via A0/A1 address pins and includes HOLD functionality for serial bus pause/resume without sequence reset.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | 4 independent digitally controlled potentiometers |
| Resolution | 64 taps (6-bit wiper control), enabling 1.6% step resolution per pot |
| RTOTAL | 10 kΩ ±20%, stable across temperature with ±300 ppm/°C TC |
| Wiper Resistance | 150 Ω typical (max 500 Ω), minimizing signal path error in low-impedance feedback loops |
| VCC Range | 2.7 V to 5.5 V, compatible with both 3.3 V and 5 V logic systems |
| Standby Current | <3 µA total package, enabling ultra-low-power battery-backed configuration storage |
| Data Retention | 100 years, ensuring long-term calibration persistence without refresh |
| Endurance | 100,000 write cycles per register, supporting frequent recalibration in field-deployed equipment |
Pinout & Package
Package: 24-lead TSSOP (4.4 mm wide), Pb-free/RoHS compliant (MDP0044 drawing), suitable for automated SMT assembly and high-density layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pin 1) | Positive supply rail | Must be ≥ VH/VL/VW; powers internal logic and resistor array biasing |
| VSS (Pin 12) | Ground reference | Common return for all analog and digital circuitry; decoupling required |
| CS (Pin 5) | Chip select input | Active-low enable; HIGH places SO in high-Z and enters standby mode |
| SCK (Pin 17) | SPI clock input | Drives all serial data transfers; max 2 MHz frequency supports fast reconfiguration |
| SI (Pin 7) | SPI data input | Accepts instruction, address, and data bytes on rising edge; supports shared SO/SI bus |
| SO (Pin 19) | SPI data output | Push-pull output; returns register contents on falling edge; tri-state when CS HIGH |
| WP (Pin 6) | Hardware write protect | LOW disables nonvolatile writes to DRs and WCRs, preventing accidental calibration loss |
| HOLD (Pin 18) | Serial bus hold control | Pauses ongoing SPI transaction when LOW (SCK LOW); resumes on HIGH (SCK LOW) |
| A0, A1 (Pins 20, 8) | Device address inputs | Set LSBs of slave address; allow up to 4 devices on same SPI bus |
| VH0–VH3 / VL0–VL3 (Pins 3,10,15,22 / 2,9,16,23) | Potentiometer terminal pairs | Fixed ends of each 10 kΩ resistor array; VH = high-side, VL = low-side |
| VW0–VW3 (Pins 4,11,14,21) | Wiper outputs | Analog outputs tracking wiper position; 150 Ω typical resistance affects loading in precision dividers |
| NC (Pins 13, 24) | No connection | Not internally bonded; must remain unconnected per MDP0044 mechanical spec |
Key Features
| Feature | Design Value |
|---|---|
| Quad independent XDCP channels | Enables simultaneous trimming of four analog paths (e.g., multi-rail PSU feedback, quad-sensor gain) |
| Nonvolatile wiper position storage | Restores last-set resistance ratio at power-up via DR0 load, eliminating boot-time recalibration |
| SPI interface with HOLD and WP | Allows robust multi-device bus management and prevents unintended NV writes during firmware updates |
| 16 bytes EEPROM-equivalent memory | Four 6-bit DRs per channel (24 bits total) usable for system parameters or user preferences beyond wiper settings |
| Low power operation | <3 µA standby current enables use in always-on monitoring nodes without battery drain penalty |
| Industrial temperature range | -40°C to +85°C rating ensures stable performance in factory automation and outdoor instrumentation |
Applications
| Programmable Power Supply Calibration | Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Adjusting feedback divider ratios in DC-DC converters to maintain precise output voltage across line/load/temp variations. IC Role / Device Role / Timing Role: Quad XDCP acts as digitally tunable resistor network in voltage sense path; each pot sets one rail's regulation point. Use Value: Enables factory calibration and field recalibration without manual potentiometers; 10 kΩ RTOTAL matches standard PSU feedback impedance targets. |
Use Scenario: Compensating offset and gain drift in analog sensor front-ends (e.g., thermocouple amplifiers, strain gauge bridges). IC Role / Device Role / Timing Role: Two pots configure instrumentation amplifier gain and offset null; remaining two tune filter cutoffs or reference levels. Use Value: 64-tap resolution provides <1.6% step accuracy for sub-mV offset correction; nonvolatile storage retains calibrated values across power cycles. |
| Audio Level Control | Industrial Process Controller Tuning |
|
Use Scenario: Implementing remote-controllable volume/gain stages in professional audio mixers or broadcast equipment. IC Role / Device Role / Timing Role: Each pot serves as a digitally addressed attenuator in line-level signal path; SPI allows synchronized mute/ramp control. Use Value: 150 Ω wiper resistance minimizes THD in audio paths; 2.7–5.5 V VCC supports mixed-voltage system integration. |
Use Scenario: Dynamically adjusting PID loop parameters (Kp, Ki, Kd) or alarm thresholds in PLC-based process controllers. IC Role / Device Role / Timing Role: Pots set analog reference voltages for comparator hysteresis, DAC reference scaling, or op-amp feedback networks. Use Value: 100-year data retention ensures decades-long calibration stability in unattended infrastructure; TSSOP-24 fits compact DIN-rail controller PCBs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digitally controlled potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5204BRUZ10 | Quad 10 kΩ, SPI interface, but only 32-tap resolution and no hardware WP pin | Lacks dedicated write-protect; requires software-managed NV writes, increasing risk of corruption during brownout | Choose if lower cost and 32-step resolution suffice; avoid where tamper-proof calibration is critical |
| MCP42050-I/SL | Quad 50 kΩ, SPI, 256-tap resolution, but higher 500 Ω wiper resistance and no HOLD pin | Higher RTOTAL and wiper R limit use in low-impedance feedback loops; no bus pause capability | Prefer for high-resolution trimming where 50 kΩ loading is acceptable; not suitable for fast SPI arbitration scenarios |
Compared with AD5204BRUZ10 and MCP42050-I/SL, the X9401WV24IZT1 uniquely combines 64-tap precision, hardware write protection, HOLD functionality, and 150 Ω wiper resistance-making it optimal for industrial calibration systems requiring reliability, repeatability, and analog signal integrity.
Availability
X9401WV24IZT1 is available at Aetrix Electronics and suitable for programmable power supplies, sensor signal conditioning, audio level control, and industrial process controller tuning requiring stable component supply and long-term calibration retention.
Supply support for X9401WV24IZT1 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 Corporation is a provider of precision analog and power management ICs, now part of Renesas Electronics, with deep expertise in configurable analog interfaces and high-reliability industrial components.
The X9401 product line was designed for digitally programmable analog trimming in industrial, test & measurement, and embedded control systems-emphasizing nonvolatile configuration, SPI simplicity, and robustness across temperature and supply variation.
FAQ
What is the operating voltage range for the X9401WV24IZT1?
The X9401WV24IZT1 operates from 2.7 V to 5.5 V, supporting both 3.3 V and 5 V logic systems. This range is specified in the Absolute Maximum Ratings table and validated across the full -40°C to +85°C industrial temperature range. Operation outside this window may impair nonvolatile write reliability or cause undefined wiper behavior.
Does the X9401WV24IZT1 retain wiper settings after power loss?
Yes-the X9401WV24IZT1 automatically loads the contents of Data Register 0 (DR0) into each channel's volatile Wiper Counter Register (WCR) at power-up. Since DR0 is nonvolatile with 100-year retention, the last-saved wiper position is restored reliably without host intervention.
How many devices can share the same SPI bus with the X9401WV24IZT1?
Up to four X9401WV24IZT1 devices can coexist on a single SPI bus using the A0 and A1 address pins to configure unique 2-bit slave addresses. Each device responds only to commands matching its physical address, enabling compact multi-channel analog configuration without additional chip selects.
What is the maximum SPI clock frequency supported by the X9401WV24IZT1?
The X9401WV24IZT1 supports SPI clock frequencies up to 2.0 MHz, as confirmed in the AC Timing specifications (fSCK MAX = 2 MHz). At this rate, full 3-byte read/write operations complete in under 2 µs, enabling rapid reconfiguration in real-time control loops.
Can the X9401WV24IZT1 be used as a two-terminal variable resistor?
Yes-the X9401WV24IZT1 supports two-terminal operation by connecting either VH or VL to VW (wiper), effectively using the array as a digitally adjustable rheostat. This configuration is explicitly validated in the Applications section and maintains the same 10 kΩ nominal resistance and 150 Ω wiper resistance specs.
X9401WV24IZT1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- XDCP™
- Package/Case:
- 24-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Taper:
- Linear
- Configuration:
- Potentiometer
- Number of Circuits:
- 4
- Number of Taps:
- 64
- Resistance (Ohms):
- 10k
- Interface:
- SPI
- Memory Type:
- Non-Volatile
- Voltage - Supply:
- 5V
- Features:
- Selectable Address
- Tolerance:
- ±20%
- Temperature Coefficient (Typ):
- ±300ppm/°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 24-TSSOP
- Operating Temperature:
- -40°C ~ 85°C
- Resistance - Wiper (Ohms) (Typ):
- 150
X9401WV24IZT1 FAQ
1.How can I place an order for X9401WV24IZT1 through Aetrix?
Please submit a Request for Quotation (RFQ) for X9401WV24IZT1 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 X9401WV24IZT1 reliable?
The price and inventory of X9401WV24IZT1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X9401WV24IZT1 is usually 5 days.
3.What payment methods are accepted for X9401WV24IZT1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9401WV24IZT1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9401WV24IZT1?
X9401WV24IZT1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9401WV24IZT1 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 X9401WV24IZT1?
For technical support, including X9401WV24IZT1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9401WV24IZT1 requirements.
6.How does Aetrix verify that X9401WV24IZT1 is sourced from the original manufacturer or authorized distributors?
All X9401WV24IZT1 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 X9401WV24IZT1 meets industry standards.
7.What is the process for return or replacement of X9401WV24IZT1?
All X9401WV24IZT1 units undergo pre-shipment inspection (PSI). If there is an issue with X9401WV24IZT1, 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 X9401WV24IZT1 part is unused and in its original packaging.
Return procedure for X9401WV24IZT1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
X9401WV24IZT1 Tags
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