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Renesas X9315WPI-2.7
- Part No.:
- X9315WPI-2.7
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
X9315WPI-2.7.pdf
- Description:
- IC DGTL POT 10KOHM 32TAP 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,723
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Product details
Overview
X9315WPI-2.7 from Intersil is a low-noise, low-power, 32-tap digitally controlled potentiometer (XDCP™) implemented with 31 resistive elements and nonvolatile memory. It operates from 2.7V to 5.5V, offers 10kΩ end-to-end resistance, supports 3-wire serial interface (CS/U/D/INC), and retains wiper position across power cycles. It serves as a solid-state replacement for mechanical potentiometers in precision analog trimming applications.
For engineers reviewing the X9315WPI-2.7 datasheet, X9315WPI-2.7 pinout, X9315WPI-2.7 application, or X9315WPI-2.7 equivalent, this page delivers verified specifications, validated pin functions, confirmed industrial temperature operation (–40°C to +85°C), package dimensions (8-lead MSOP), and real-world use cases in voltage reference calibration and sensor signal conditioning.
Technical Context
The X9315WPI-2.7 integrates a 5-bit up/down counter, decoder, 31-element resistor array, and EEPROM-based nonvolatile memory. Wiper position is controlled via edge-triggered INC input with direction set by U/D, and stored on CS↑ while INC = HIGH.
It uses "make-before-break" switching during tap transitions, ensuring continuity but causing temporary RTOTAL reduction when stepping multiple positions. Terminal voltages are rail-to-rail (0V to VCC), and wiper resistance is 400–1000Ω at 2.7V supply - critical for low-distortion analog signal paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.7V to 5.5V - enables direct compatibility with 3.3V and 5V systems without level shifting. |
| RTOTAL | 10kΩ ±20% - defines full-scale resistance for gain/offset adjustment circuits with predictable tolerance. |
| Wiper Resolution | 32 taps (31 segments) - provides ~3% step resolution for fine analog control in closed-loop systems. |
| Active Current | 80µA max at VCC = 2.7V - ensures ultra-low power consumption in battery-operated instrumentation. |
| Standby Current | 5µA max - supports long-term retention of trim settings with negligible quiescent drain. |
| Nonvolatile Endurance | 100,000 data changes per bit - guarantees reliable field recalibration over product lifetime. |
| Temperature Range | –40°C to +85°C - qualified for industrial-grade embedded control and automotive under-hood auxiliary circuits. |
Pinout & Package
Package: 8-lead MSOP (Pb-free, RoHS compliant), JEDEC MO-187AA, body dimensions 3.0mm × 3.0mm × 0.85mm (M8.118).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Positive supply rail | Must be ≥ VH, VL, VW; powers internal logic and resistor array; supports 2.7V–5.5V operation. |
| VSS | Ground reference | Common return for all digital inputs and analog terminals; establishes 0V baseline for RH/VH and RL/VL. |
| RH/VH | High terminal | Fixed end of resistor array; voltage range 0V to VCC; used as top rail in voltage divider configurations. |
| RL/VL | Low terminal | Fixed end of resistor array; voltage range 0V to VCC; used as bottom rail in voltage divider configurations. |
| RW/VW | Wiper output | Movable tap point; series resistance 400–1000Ω at 2.7V; delivers interpolated voltage between RH and RL. |
| CS | Chip select | Active-low enable; storage triggered on rising edge while INC = HIGH; places device in standby when high. |
| U/D | Direction control | Sets increment/decrement mode for wiper movement; state may change dynamically during CS = LOW. |
| INC | Increment clock | Negative-edge triggered; advances wiper one tap per valid edge; timing tCYC ≥ 4µs required. |
Key Features
| Feature | Design Value |
|---|---|
| Nonvolatile wiper storage | Wiper position retained for 100 years and restored automatically at power-up - eliminates manual re-trim after power loss. |
| 3-wire serial interface | Requires only CS, U/D, and INC signals - simplifies MCU GPIO usage and avoids SPI/I²C peripheral overhead. |
| Rail-to-rail terminal voltage | RH/VH and RL/VL accept 0V to VCC - enables direct connection to op-amp rails without external biasing. |
| Make-before-break switching | Prevents open-circuit transients during tap transitions - maintains signal continuity in sensitive analog feedback paths. |
| Low 2.7V operation | Full functionality at 2.7V supply with 80µA active current - supports energy-constrained IoT sensor nodes and portable devices. |
Applications
| ADC Reference Trimming | Voltage Regulator Feedback |
|---|---|
|
Use Scenario: Calibrating the reference voltage applied to a 12-bit SAR ADC to correct for initial offset and drift. IC Role / Device Role / Timing Role: Acts as a programmable voltage divider between VREF and ground, setting precise reference level for ADC conversion. Use Value: Enables factory and field calibration with 3% step resolution and nonvolatile storage - eliminates need for laser trimming or manual potentiometers. |
Use Scenario: Adjusting output voltage of an adjustable LDO (e.g., LM317) via feedback resistor network. IC Role / Device Role / Timing Role: Replaces fixed R1/R2 divider with digitally tunable element to support multi-voltage configuration or dynamic load-line adjustment. Use Value: Allows software-controlled output voltage selection without hardware change; 10kΩ RTOTAL matches typical LDO feedback impedance requirements. |
| Sensor Signal Offset Nulling | Audio Channel Balance Control |
|
Use Scenario: Compensating DC offset in bridge-based pressure sensor outputs before amplification. IC Role / Device Role / Timing Role: Configured as two-terminal variable resistor in op-amp summing junction to inject opposing offset current. Use Value: Achieves sub-mV nulling accuracy with temperature-stable ±300ppm/°C RTOTAL drift - outperforms mechanical pots in thermal cycling environments. |
Use Scenario: Implementing digital volume/balance control in stereo line-level audio paths. IC Role / Device Role / Timing Role: Used as three-terminal potentiometer in dual-channel inverting amplifier topology to adjust relative gain. Use Value: Delivers –120dBV noise floor and <±1% absolute linearity - preserves audio fidelity without channel mismatch or scratch noise. |
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 | I²C interface, dual-channel, 256-tap resolution, 10kΩ RTOTAL, 2.7–5.5V supply. | Requires I²C master; higher resolution but no nonvolatile store per channel - needs external EEPROM for persistent settings. | Select when dual independent pots and finer resolution are needed; avoid if 3-wire simplicity and guaranteed power-up recall are mandatory. |
| MCP41010-I/P | Single-channel, SPI interface, 256-tap, 10kΩ RTOTAL, 2.7–5.5V, volatile wiper register only. | No built-in nonvolatile memory - wiper resets to mid-scale on power-up unless host reloads value. | Choose for SPI-based systems needing higher resolution; add external NVM if power-cycle retention is required. |
Compared with AD5243BRMZ10 and MCP41010-I/P, the X9315WPI-2.7 uniquely combines 3-wire simplicity, guaranteed power-up wiper recall, and industrial temperature rating - making it optimal for maintenance-free analog trimming where interface overhead and reliability outweigh resolution demands.
Availability
X9315WPI-2.7 is available at Aetrix Electronics and suitable for industrial sensor calibration, medical instrument trimming, and automotive subsystem tuning requiring stable component supply, long-term parametric consistency, and RoHS-compliant packaging.
Supply support for X9315WPI-2.7 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 power management, precision analog, and interface applications.
The X9315 family was engineered specifically for replacing mechanical potentiometers in rugged, maintenance-free analog adjustment tasks - emphasizing nonvolatile retention, low power, and rail-to-rail operation in industrial and automotive environments.
FAQ
What is the operating voltage range for the X9315WPI-2.7?
The X9315WPI-2.7 operates from 2.7V to 5.5V, supporting both 3.3V and 5V logic systems without external regulation. Its internal CMOS circuitry is fully functional across this range, with specified active current (80µA max) and wiper resistance (400–1000Ω) validated at 2.7V - making the X9315WPI-2.7 ideal for low-voltage portable and battery-powered applications.
Does the X9315WPI-2.7 retain its wiper position after power removal?
Yes, the X9315WPI-2.7 stores the wiper position in on-chip nonvolatile memory and automatically recalls it at power-up. This feature is guaranteed for 100 years with 100,000 write cycles, eliminating manual re-trim or external memory. The X9315WPI-2.7 performs the store operation on CS rising edge while INC is HIGH - a key behavior distinguishing it from volatile digital potentiometers.
What package type is used for the X9315WPI-2.7?
The X9315WPI-2.7 is supplied in an 8-lead MSOP (Mini Small Outline Plastic) package, Pb-free and RoHS compliant, with JEDEC MO-187AA footprint (M8.118). Its compact 3.0mm × 3.0mm body and 0.5mm lead pitch enable high-density PCB layouts - a direct fit for space-constrained industrial controllers and sensor modules where the X9315WPI-2.7 replaces through-hole potentiometers.
How many wiper positions does the X9315WPI-2.7 support?
The X9315WPI-2.7 provides 32 discrete wiper positions (0 to 31), corresponding to 31 equal resistive segments in its linear array. Each step represents approximately 3% of total resistance, enabling precise analog adjustments. This resolution is confirmed in the FN8179 datasheet and applies identically to the X9315WPI-2.7 variant - no interpolation or fractional tapping is supported.
Can the X9315WPI-2.7 be used as a two-terminal variable resistor?
Yes, the X9315WPI-2.7 can operate as a two-terminal variable resistor by connecting either RH/VH or RL/VL to RW/VW and using the remaining terminal with ground or supply. Its 10kΩ RTOTAL, ±20% tolerance, and temperature coefficient of ±300ppm/°C are specified for this configuration. This mode is explicitly supported in the X9315WPI-2.7 datasheet and commonly deployed in current-source trimming and LED bias control.
X9315WPI-2.7 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:
- 2.7V ~ 5.5V
- 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):
- 400
X9315WPI-2.7 FAQ
1.How can I place an order for X9315WPI-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for X9315WPI-2.7 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-2.7 reliable?
The price and inventory of X9315WPI-2.7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X9315WPI-2.7 is usually 5 days.
3.What payment methods are accepted for X9315WPI-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9315WPI-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9315WPI-2.7?
X9315WPI-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9315WPI-2.7 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-2.7?
For technical support, including X9315WPI-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9315WPI-2.7 requirements.
6.How does Aetrix verify that X9315WPI-2.7 is sourced from the original manufacturer or authorized distributors?
All X9315WPI-2.7 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-2.7 meets industry standards.
7.What is the process for return or replacement of X9315WPI-2.7?
All X9315WPI-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with X9315WPI-2.7, 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-2.7 part is unused and in its original packaging.
Return procedure for X9315WPI-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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