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Renesas X9315WM
- Part No.:
- X9315WM
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
X9315WM.pdf
- Description:
- IC DGTL POT 10KOHM 32TAP 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,659
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Product details
Overview
X9315WM from Intersil is a low-noise, low-power, 32-tap digitally controlled potentiometer (XDCP™) implemented with 31 resistive elements and a wiper switching network. It features nonvolatile memory for wiper position storage, 3-wire serial interface (CS/U/D/INC), 10kΩ end-to-end resistance, and operates from 4.5V to 5.5V supply - used in precision analog trimming, sensor calibration, and programmable gain control circuits.
For engineers reviewing the X9315WM datasheet, X9315WM pinout, X9315WM application, or X9315WM equivalent, this page delivers verified specifications, validated MSOP-8 package details, confirmed 3-wire interface timing, nonvolatile store/recall behavior, and real-world use cases in industrial signal conditioning and embedded analog tuning.
Technical Context
The X9315WM uses a 5-bit up/down counter driving a 32-position decoder to select taps across a monolithic resistor array. Wiper movement follows make-before-break switching, preventing open-circuit transients during position changes.
Nonvolatile memory stores wiper position on CS↑ with INC HIGH, enabling automatic restoration at power-up. The device supports two-terminal variable resistor and three-terminal potentiometer configurations, with terminal voltages bounded by VSS and VCC and wiper resistance of 200Ω (typ.) at 5V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RTOTAL | 10kΩ ±20% - defines full-scale resistance range for voltage divider or current-limiting applications |
| Supply Voltage | 4.5V to 5.5V - compatible with standard 5V logic systems; no 2.7V variant support for this part number |
| Wiper Resistance | 200Ω (typ.) at VCC = 5V - contributes minimal series impedance in signal path |
| Active Current | 80µA max. - enables ultra-low-power operation in battery-backed or energy-sensitive designs |
| Standby Current | 5µA max. - ensures negligible quiescent draw when deselected |
| Resolution | 3% - corresponds to 1/31 step size (≈32.26Ω per tap) across 10kΩ array |
| Endurance | 100,000 data changes per bit - supports long-term field recalibration without wear-out |
Pinout & Package
Package: 8-lead MSOP (Pb-free), JEDEC MO-187BA compliant, dimensions 3.0mm × 3.0mm × 0.85mm (M8.118 drawing).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RH/VH | High terminal | Fixed end of resistor array; voltage referenced to VCC; not necessarily at VCC potential |
| RL/VL | Low terminal | Fixed end of resistor array; voltage referenced to VSS; not necessarily at VSS potential |
| RW/VW | Wiper terminal | Movable contact point; output node for voltage division or variable resistance; 200Ω typical series resistance |
| VCC | Supply voltage | Positive rail (4.5–5.5V); powers internal logic and resistor array |
| VSS | Ground | Reference return for all signals and supply; must be connected |
| CS | Chip Select | Active-low enable; initiates wiper movement when LOW; triggers nonvolatile store on rising edge with INC HIGH |
| U/D | Up/Down control | Sets wiper direction: HIGH = increment, LOW = decrement; sampled on each INC edge |
| INC | Increment clock | Negative-edge-triggered; advances wiper one position per valid edge when CS is LOW |
Key Features
| Feature | Design Value |
|---|---|
| Nonvolatile wiper storage | Retains last programmed position across power cycles; eliminates need for external EEPROM or startup calibration |
| 3-wire serial interface | Requires only CS, U/D, and INC lines - reduces MCU GPIO count and simplifies PCB routing vs. SPI/I²C |
| Make-before-break switching | Prevents momentary open-circuit at wiper during tap transitions - avoids signal dropout in audio or sensor paths |
| Temperature-compensated array | ±300 ppm/°C RTOTAL drift - maintains stable resistance ratio over 0°C to +70°C commercial range |
| Low noise performance | −120 dBV (ref 1 kHz) - suitable for high-fidelity audio gain control and precision instrumentation |
Applications
| Audio Signal Level Control | Sensor Offset Calibration |
|---|---|
Use Scenario: Adjusting volume or gain in line-level audio circuits without mechanical wear or contact noise. IC Role / Device Role / Timing Role: Three-terminal potentiometer acting as programmable voltage divider between input and amplifier stage. Use Value: −120 dBV noise floor and make-before-break switching prevent audible clicks and maintain signal integrity during adjustment. |
Use Scenario: Compensating zero-point drift in bridge-based pressure or temperature sensors. IC Role / Device Role / Timing Role: Two-terminal variable resistor in offset nulling network of instrumentation amplifier. Use Value: 100,000-cycle endurance and nonvolatile recall allow field recalibration and consistent startup bias without host intervention. |
| Programmable Gain Amplifier Tuning | Industrial DAC Output Scaling |
Use Scenario: Setting closed-loop gain in op-amp configurations where discrete resistor selection is impractical. IC Role / Device Role / Timing Role: Adjustable feedback resistor in noninverting amplifier topology. Use Value: 3% resolution and ±20% RTOTAL tolerance enable predictable gain steps (e.g., 1×, 2×, 5×) with minimal calibration overhead. |
Use Scenario: Scaling full-scale output of a 12-bit DAC to match actuator input ranges (e.g., 0–5V → 0–10V). IC Role / Device Role / Timing Role: Precision voltage divider at DAC output node to adjust reference ratio. Use Value: Ratiometric temperature coefficient of ±20 ppm/°C ensures stable scaling across ambient temperature shifts in factory automation environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digitally controlled potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5243BRMZ10 | 2-channel I²C interface; 10kΩ; 256 taps; 0.1% RH/RW matching; no nonvolatile memory | Requires external microcontroller with I²C; lacks auto-recall on power-up | Choose for multi-channel synchronization or higher resolution where EEPROM backup is acceptable |
| MCP41010-I/P | Single-channel SPI interface; 10kΩ; 256 taps; volatile wiper register; no nonvolatile storage | Needs host-initiated restore after power cycle; higher pin count (8-pin PDIP vs. MSOP) | Choose for SPI-native systems needing finer granularity but accepting startup reinitialization |
Compared with AD5243BRMZ10 and MCP41010-I/P, the X9315WM offers deterministic power-on behavior via integrated nonvolatile memory, simpler 3-wire control, and lower active current - making it optimal for self-contained analog trimming where reliability and minimal firmware overhead are critical.
Availability
X9315WM is available at Aetrix Electronics and suitable for industrial sensor calibration, embedded audio level control, and programmable gain amplifier tuning requiring stable component supply and RoHS-compliant packaging.
Supply support for X9315WM 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) designs high-performance analog and mixed-signal ICs for industrial, communications, and computing markets.
The X9315WM belongs to the XDCP™ family of digitally controlled potentiometers engineered for replacing mechanical trimmers in precision analog systems where long-term stability, programmability, and nonvolatile setting retention are required.
FAQ
What is the supply voltage range supported by the X9315WM?
The X9315WM operates from 4.5V to 5.5V (5V ±10%). It does not support the 2.7V–5.5V range - that specification applies only to X9315WMZ-2.7 variants. Using voltages outside 4.5–5.5V may cause undefined behavior or damage. Always verify VCC against the ordering suffix: X9315WM requires nominal 5V operation.
Does the X9315WM retain its wiper position after power loss?
Yes, the X9315WM stores the wiper position in nonvolatile memory and automatically recalls it on power-up. This occurs only if the position was explicitly stored using the CS↑/INC HIGH sequence. Default power-up behavior restores the last stored value - no external controller or initialization code is needed for repeatable startup conditions in the X9315WM.
Can the X9315WM be used as a two-terminal variable resistor?
Yes, the X9315WM supports two-terminal operation by connecting either RH/VH or RL/VL to RW/VW and using the remaining fixed terminal with the wiper. In this mode, it functions as a digitally adjustable rheostat with 10kΩ maximum resistance and 32 discrete steps - commonly used in LED current limiting or oscillator frequency tuning where only one-sided adjustment is required.
What is the maximum wiper current rating for the X9315WM?
The X9315WM specifies a maximum wiper current (IW) of ±3.75mA under recommended operating conditions. Exceeding this limit risks localized heating, resistance drift, or accelerated wear. For applications involving higher currents - such as driving MOSFET gates - external buffering or series limiting resistors must be added to ensure the X9315WM wiper remains within its safe operating area.
Is the X9315WM pin-compatible with other packages in the X9315 family?
No - the X9315WM is specifically qualified in the 8-lead MSOP package (M8.118). While the pinout matches SOIC and PDIP variants electrically, mechanical compatibility is not guaranteed due to differing lead pitch (0.65mm for MSOP vs. 1.27mm for SOIC). PCB layout must match M8.118 dimensions; substituting packages requires board revision even though signal mapping is identical across X9315WM variants.
X9315WM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- XDCP™
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Bulk
- 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:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-MSOP
- Operating Temperature:
- 0°C ~ 70°C
- Resistance - Wiper (Ohms) (Typ):
- 200
X9315WM FAQ
1.How can I place an order for X9315WM through Aetrix?
Please submit a Request for Quotation (RFQ) for X9315WM 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 X9315WM reliable?
The price and inventory of X9315WM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X9315WM is usually 5 days.
3.What payment methods are accepted for X9315WM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9315WM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9315WM?
X9315WM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9315WM 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 X9315WM?
For technical support, including X9315WM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9315WM requirements.
6.How does Aetrix verify that X9315WM is sourced from the original manufacturer or authorized distributors?
All X9315WM 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 X9315WM meets industry standards.
7.What is the process for return or replacement of X9315WM?
All X9315WM units undergo pre-shipment inspection (PSI). If there is an issue with X9315WM, 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 X9315WM part is unused and in its original packaging.
Return procedure for X9315WM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
X9315WM 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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