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Renesas X9315WPI
- Part No.:
- X9315WPI
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
X9315WPI.pdf
- Description:
- IC DGTL POT 10KOHM 32TAP 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,650
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Product details
Overview
X9315WPI from Intersil is a digitally controlled potentiometer (XDCP™) implementing a 31-element resistor array with 32 wiper tap positions, nonvolatile wiper position storage, and 3-wire serial interface (CS/U/D/INC). It operates at 2.7V–5.5V supply, delivers ±20% end-to-end resistance tolerance, and supports industrial temperature range (−40°C to +85°C) in an 8-lead SOIC package. It functions as a solid-state replacement for mechanical potentiometers in precision analog trimming applications.
For engineers reviewing the X9315WPI datasheet, X9315WPI pinout, X9315WPI application, or X9315WPI equivalent, this page provides verified technical context, confirmed pin roles, real-world use scenarios, and validated alternative options for analog signal conditioning, power supply feedback tuning, and sensor calibration circuits where nonvolatile setting retention and low-power operation are required.
Technical Context
The X9315WPI integrates a 5-bit up/down counter, nonvolatile EEPROM memory, and a resistor array with 31 matched elements. Wiper position is controlled via edge-triggered INC input synchronized with U/D direction and CS enable, enabling precise digital stepping without microcontroller firmware overhead.
Its "make-before-break" wiper switching prevents open-circuit transients during tap transitions, and the stored wiper value is automatically recalled at power-up. The device supports ratiometric operation with terminal voltages ranging from VSS to VCC and exhibits ±300 ppm/°C total resistance temperature coefficient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Wiper resolution | 32 discrete tap positions (0–31), enabling 3.125% step granularity across full scale |
| End-to-end resistance (RTOTAL) | 10 kΩ ±20%, defining maximum voltage divider ratio and current-handling capability |
| Supply voltage range | 2.7 V to 5.5 V - compatible with both 3.3 V and 5 V logic systems without level shifting |
| Active supply current | 80 µA max at 5 V - enables battery-powered or low-quiescent designs |
| Nonvolatile memory endurance | 100,000 store cycles - supports frequent recalibration without wear-out concerns |
| Wiper resistance | 200 Ω typical at 5 V - limits loading error in high-impedance feedback paths |
| Temperature range | −40°C to +85°C - qualified for industrial-grade embedded control environments |
Pinout & Package
Package: 8-lead narrow-body SOIC (M8.15E footprint, RoHS-compliant, Pb-free).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Positive supply rail | Must be ≥ VH, VL, and VW; powers internal logic and resistor array |
| VSS | Ground reference | Common return for supply, logic inputs, and potentiometer terminals |
| RH/VH | High terminal | Fixed end of resistor array; voltage range = 0 to VCC; not polarity-fixed |
| RL/VL | Low terminal | Opposite fixed end; referenced relative to wiper movement direction, not absolute voltage |
| RW/VW | Wiper output | Movable tap point; series resistance ~200 Ω at 5 V affects gain accuracy in op-amp feedback |
| CS | Chip select | Active-low enable; rising edge with INC = HIGH triggers nonvolatile store |
| U/D | Direction control | Defines increment/decrement behavior on next INC edge; stable during CS = LOW |
| INC | Increment clock | Negative-edge triggered; advances wiper one position per valid transition |
Key Features
| Feature | Design Value |
|---|---|
| Nonvolatile wiper storage | Retains last-set position across power cycles-eliminates startup drift in closed-loop systems |
| 3-wire serial interface | Requires only CS, U/D, and INC signals-no SPI/I²C peripheral needed; minimal GPIO usage |
| Make-before-break switching | Prevents momentary open-circuit during tap changes-avoids glitches in sensitive analog paths |
| Temperature-compensated array | ±20 ppm/°C ratiometric tempco ensures stable voltage division over temperature |
| Low standby current | 5 µA max-enables always-on calibration nodes in energy-constrained IoT sensor nodes |
Applications
| Laser Diode Bias Control | DC-DC Converter Feedback Tuning |
|---|---|
Use Scenario: Precise adjustment of laser diode bias current in fiber-optic transceivers to maintain constant optical output power across temperature. IC Role / Device Role / Timing Role: Two-terminal variable resistor in the laser driver's current-sense path, providing programmable gain for feedback loop calibration. Use Value: Nonvolatile storage retains optimal trim value after hot-plug events or system resets, reducing recalibration time and improving manufacturing yield. |
Use Scenario: Dynamic adjustment of output voltage setpoint in isolated DC-DC converters used in industrial PLCs and motor drives. IC Role / Device Role / Timing Role: Three-terminal potentiometer in the error amplifier feedback divider, enabling field-updatable output regulation. Use Value: 10 kΩ RTOTAL and low wiper resistance minimize loading error on high-impedance feedback nodes, preserving loop stability. |
| Sensor Signal Conditioning | Audio Level Trimming |
Use Scenario: Offset and gain calibration of bridge-based pressure sensors in medical instrumentation requiring traceable factory calibration. IC Role / Device Role / Timing Role: Dual-role potentiometer: RH/VH–RW/VW as variable gain stage, RW/VW–RL/VL as offset nulling element. Use Value: ±1 MI absolute linearity and −120 dBV noise floor ensure sub-mV-level calibration fidelity without introducing measurable distortion. |
Use Scenario: User-adjustable volume control in professional audio mixers with recallable channel settings. IC Role / Device Role / Timing Role: Three-terminal potentiometer replacing mechanical unit; wiper connected to op-amp inverting input for logarithmic taper emulation. Use Value: 32-tap resolution provides sufficient granularity for perceptual loudness control while avoiding excessive MCU polling overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digitally controlled potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5241BRMZ10 | I²C interface, 10 kΩ, 64 taps, 0.1% RTOTAL tolerance, no built-in NV memory (requires external EEPROM) | Requires I²C bus and firmware support; better resolution but higher system complexity | Select when higher precision and I²C integration outweigh added software overhead |
| MCP41010-I/P | SPITM interface, 10 kΩ, 257 taps, volatile wiper register only (no NV memory), 20% RTOTAL tolerance | Power-cycle reset behavior requires host reinitialization; suited for dynamic runtime adjustment | Select when fine-grained adjustment is critical and nonvolatility is managed externally |
Compared with AD5241BRMZ10 and MCP41010-I/P, the X9315WPI offers simpler 3-wire control, guaranteed power-up to last-stored value, and lower active current-making it optimal for low-complexity, low-power, self-contained analog trimming where deterministic startup behavior is essential.
Availability
X9315WPI is available at Aetrix Electronics and suitable for industrial sensor calibration, DC-DC converter feedback tuning, and laser diode bias control requiring stable component supply, long-term lifecycle continuity, and RoHS-compliant packaging.
Supply support for X9315WPI 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 (now part of Renesas Electronics) is a semiconductor manufacturer specializing in precision analog, power management, and interface ICs for industrial, communications, and computing markets.
The X9315WPI belongs to Intersil's XDCP™ (Digitally Controlled Potentiometer) product line, designed specifically for replacing mechanical potentiometers in applications demanding reliability, programmability, and nonvolatile setting retention under harsh environmental conditions.
FAQ
What is the supply voltage range supported by the X9315WPI?
The X9315WPI operates from 2.7 V to 5.5 V, making it compatible with both 3.3 V and 5 V systems. This dual-voltage capability eliminates the need for level-shifting circuitry when interfacing with mixed-supply microcontrollers or logic families. The X9315WPI maintains full functionality-including wiper movement, storage, and recall-across this entire range, as confirmed in the FN8179 Rev.2.00 datasheet Section "Recommended Operating Conditions".
Does the X9315WPI retain its wiper position after power cycling?
Yes, the X9315WPI stores the wiper position in nonvolatile EEPROM memory and automatically recalls it upon power-up. This behavior is intrinsic to the device architecture and requires no external components or host intervention. The X9315WPI guarantees 100-year data retention and 100,000 store cycles, ensuring reliable operation in maintenance-free embedded systems where consistent startup behavior is critical.
What package type is used for the X9315WPI?
The X9315WPI uses an 8-lead narrow-body SOIC package conforming to JEDEC MS-012-AA (drawing M8.15E), with lead pitch of 1.27 mm and body dimensions of 4.90 mm × 3.90 mm. It is RoHS-compliant and Pb-free, with matte tin plating suitable for both SnPb and lead-free reflow processes. Pin 1 is marked by a notch or dot in the top-left corner of the package.
How many wiper positions does the X9315WPI provide?
The X9315WPI provides exactly 32 discrete wiper tap positions (0 through 31), corresponding to a 5-bit counter and decoder driving a 31-element resistor ladder. Each step represents a minimum increment (MI) of RTOTAL/31 ≈ 322 Ω for the 10 kΩ version. This resolution is sufficient for most analog trimming tasks while maintaining low interface complexity and fast update timing (tCYC = 4 µs).
Can the X9315WPI be used as a two-terminal variable resistor?
Yes, the X9315WPI can be configured as a two-terminal variable resistor by connecting either RH/VH or RL/VL to the wiper RW/VW and using the remaining fixed terminal with the wiper as the adjustable node. This configuration is explicitly supported in the datasheet's "Basic Configurations" section and maintains the same 32-step resolution and nonvolatile storage capability. The wiper resistance (~200 Ω at 5 V) must be accounted for in low-impedance load calculations.
X9315WPI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- XDCP™
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Taper:
- Linear
- Configuration:
- Potentiometer
- Number of Circuits:
- 1
- Number of Taps:
- 32
- Resistance (Ohms):
- 10k
- Interface:
- Up/Down (U/D, INC, CS)
- Memory Type:
- Non-Volatile
- Voltage - Supply:
- 5V
- Features:
- -
- Tolerance:
- ±20%
- Temperature Coefficient (Typ):
- ±300ppm/°C
- Mounting Type:
- Through Hole
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-PDIP
- Operating Temperature:
- -40°C ~ 85°C
- Resistance - Wiper (Ohms) (Typ):
- 200
X9315WPI FAQ
1.How can I place an order for X9315WPI through Aetrix?
Please submit a Request for Quotation (RFQ) for X9315WPI 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 X9315WPI reliable?
The price and inventory of X9315WPI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X9315WPI is usually 5 days.
3.What payment methods are accepted for X9315WPI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9315WPI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9315WPI?
X9315WPI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9315WPI 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 X9315WPI?
For technical support, including X9315WPI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9315WPI requirements.
6.How does Aetrix verify that X9315WPI is sourced from the original manufacturer or authorized distributors?
All X9315WPI 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 X9315WPI meets industry standards.
7.What is the process for return or replacement of X9315WPI?
All X9315WPI units undergo pre-shipment inspection (PSI). If there is an issue with X9315WPI, 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 X9315WPI part is unused and in its original packaging.
Return procedure for X9315WPI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
X9315WPI Tags
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MCP4018T-503E/LT
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MCP4011T-103E/SN
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MCP4018T-502E/LT
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MCP4017T-103E/LT
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MCP4531T-103E/MF
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MCP4021T-202E/SN
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MCP4023T-103E/CH
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