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Renesas X9315WST1
- Part No.:
- X9315WST1
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
X9315WST1.pdf
- Description:
- IC DGTL POT 10KOHM 32TAP 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,557
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Product details
Overview
X9315WST1 from Intersil is a digitally controlled potentiometer (XDCP™) implementing a 31-element resistor array with 32 discrete wiper tap positions, nonvolatile wiper position storage, and 3-wire serial interface (CS/U/D/INC). It operates at 5V ±10%, delivers 10kΩ end-to-end resistance, and functions as a three-terminal voltage divider or two-terminal variable resistor in analog signal conditioning circuits.
For engineers reviewing the X9315WST1 datasheet, X9315WST1 pinout, X9315WST1 application, or X9315WST1 equivalent, this device supports precision parameter trimming in power supplies, audio gain control, sensor calibration, and industrial feedback loops where repeatable, power-loss-resilient resistance adjustment is required.
Technical Context
The X9315WST1 integrates a 5-bit up/down counter, 5-bit nonvolatile memory, and a 31-resistor ladder with make-before-break wiper switching. Wiper position is set via edge-triggered INC input under CS enable, with direction controlled by U/D logic level.
It stores wiper state in EEPROM on CS↑ while INC = HIGH, enabling automatic recall at power-up. Terminal voltages are rail-to-rail (0 to VCC), wiper resistance is 200Ω typical at 5V, and absolute linearity error is ±1 MI (minimum increment = RTOTAL/31).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| End-to-end resistance | 10kΩ ±20% - defines full-scale analog range for voltage division or current limiting |
| Wiper tap count | 32 positions - enables 31-step resolution for fine-grained analog tuning |
| Supply voltage | 5V ±10% - compatible with standard 5V digital logic and analog rails |
| Active supply current | 80µA max - ultra-low power during wiper adjustment, suitable for battery-backed systems |
| Standby current | 5µA max - minimal quiescent draw when deselected, preserving system efficiency |
| Nonvolatile storage | 100-year data retention, 100,000 write cycles - ensures long-term calibration stability without external memory |
| Terminal voltage range | 0 to VCC - supports rail-to-rail operation without clamping diodes or level shifters |
Pinout & Package
Package: 8-lead SOIC (narrow body, JEDEC MS-012-AA), Pb-free compliant, operating temperature 0°C to +70°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Positive supply | Primary power rail; must be ≥ VH, VL, VW; powers internal logic and resistor array |
| VSS | Ground reference | Return path for all currents; establishes 0V baseline for RH/VH, RL/VL, and RW/VW |
| RH/VH | High terminal | Fixed end of resistor array; voltage ranges from 0 to VCC depending on wiper position |
| RL/VL | Low terminal | Fixed opposite end of resistor array; serves as reference point for wiper voltage division |
| RW/VW | Wiper terminal | Movable contact output; connects to one of 32 taps; series resistance ≤400Ω at 5V |
| CS | Chip select | Active-low enable; initiates wiper movement when LOW; triggers EEPROM store on rising edge with INC = HIGH |
| U/D | Direction control | Logic level sets wiper increment/decrement direction during INC transitions |
| INC | Increment clock | Negative-edge triggered; advances wiper one step per valid edge when CS = LOW |
Key Features
| Feature | Design Value |
|---|---|
| Solid-state potentiometer | Eliminates mechanical wear, drift, and contamination issues inherent in trimmer pots |
| 3-wire serial interface | Minimal GPIO usage (CS/U/D/INC); no SPI/I²C controller required; simplifies MCU integration |
| Nonvolatile wiper storage | Recalls last-set resistance at power-on-enables factory calibration persistence across power cycles |
| Temperature-compensated array | ±300 ppm/°C RTOTAL drift - maintains stable resistance over commercial temperature range |
| Make-before-break switching | Prevents open-circuit transients during wiper movement-critical for uninterrupted signal paths |
| Rail-to-rail terminal voltage | Supports 0–VCC operation without external biasing-enables direct connection to op-amp inputs or ADC references |
Applications
| Power Supply Trim | Audio Volume Control |
|---|---|
Use Scenario: Adjusting feedback resistor ratio in adjustable DC-DC converter to set output voltage. IC Role / Device Role / Timing Role: Two-terminal variable resistor replacing mechanical trimmer in voltage divider network. Use Value: Enables remote or automated recalibration without physical access; retains setting after power loss. |
Use Scenario: Setting gain in analog audio preamplifier stage with user-adjustable volume knob emulation. IC Role / Device Role / Timing Role: Three-terminal potentiometer acting as voltage divider between signal source and amplifier input. Use Value: Provides smooth, repeatable attenuation with no scratch noise; supports mute/unmute via wiper-to-ground short. |
| Sensor Calibration | Industrial Feedback Loop |
Use Scenario: Compensating offset/gain errors in temperature or pressure sensor signal conditioning circuitry. IC Role / Device Role / Timing Role: Precision two-terminal resistor in instrumentation amplifier gain-setting network. Use Value: Allows one-time factory calibration stored permanently; eliminates need for manual pot adjustment during assembly. |
Use Scenario: Tuning proportional gain in closed-loop motor speed or position controller. IC Role / Device Role / Timing Role: Adjustable resistor in op-amp feedback path defining loop gain and stability margin. Use Value: Supports field re-tuning without hardware change; wiper position retained through brownout events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digitally controlled potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5204BRZ10 | Quad 10kΩ DCP, SPI interface, 64-tap resolution, 2.7–5.5V supply | Higher resolution and multi-channel integration; requires SPI master instead of simple GPIO | Select when multiple simultaneous potentiometers or finer adjustment granularity is needed |
| MCP41010-I/P | Single 10kΩ DCP, SPI interface, 257-tap resolution, 2.7–5.5V supply, volatile wiper register | No nonvolatile storage; wiper resets to mid-scale on power-up unless externally saved | Select when cost-sensitive designs tolerate recalibration at startup or use external EEPROM |
Compared with AD5204BRZ10 and MCP41010-I/P, the X9315WST1 offers simpler 3-wire control and guaranteed power-up repeatability without firmware overhead, making it optimal for single-channel, low-pin-count, calibration-critical applications.
Availability
X9315WST1 is available at Aetrix Electronics and suitable for power supply trim, audio volume control, sensor calibration, and industrial feedback loop applications requiring stable component supply and long-term calibration integrity.
Supply support for X9315WST1 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 semiconductor manufacturer specializing in high-performance analog and mixed-signal ICs, now part of Renesas Electronics.
The X9315WST1 belongs to Intersil's XDCP™ (Digitally Controlled Potentiometer) product line, designed for replacing mechanical trimmers in precision analog circuits where reliability, repeatability, and nonvolatile setting retention are essential.
FAQ
What is the package type and lead count for X9315WST1?
The X9315WST1 uses an 8-lead narrow-body SOIC package (JEDEC MS-012-AA, drawing M8.15E), RoHS-compliant and rated for 0°C to +70°C operation. Its pinout matches standard SOIC-8 footprints, enabling drop-in replacement for legacy mechanical potentiometers in space-constrained PCB layouts.
Does X9315WST1 retain its wiper position after power cycling?
Yes, the X9315WST1 stores the wiper position in nonvolatile EEPROM memory. When CS transitions HIGH while INC is HIGH, the current counter value is written to memory and automatically recalled at next power-up, ensuring consistent resistance settings without host MCU intervention.
What is the maximum allowable voltage across RH/VH and RL/VL terminals of X9315WST1?
The X9315WST1 specifies ΔV = |VH – VL| ≤ 5V as absolute maximum. Since terminal voltages must remain within 0 to VCC (5V ±10%), the safe differential voltage is limited to 5V. Exceeding this risks damage to internal switches and resistor elements.
Can X9315WST1 operate from a 3.3V supply?
No-the X9315WST1 is specified only for 5V ±10% (4.5V to 5.5V). It is not rated for 3.3V operation. For 2.7–5.5V compatibility, Intersil offers the X9315WS-2.7T1 variant, but X9315WST1 requires strict 5V supply compliance.
How does the X9315WST1 handle wiper movement during rapid INC toggling?
The X9315WST1 uses make-before-break switching: multiple taps connect briefly during transition, preventing open-circuit glitches. However, moving several positions rapidly reduces effective RTOTAL temporarily-designs requiring stable impedance should limit step size or allow settling time per tIW (1–5µs).
X9315WST1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- XDCP™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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-SOIC
- Operating Temperature:
- 0°C ~ 70°C
- Resistance - Wiper (Ohms) (Typ):
- 200
X9315WST1 FAQ
1.How can I place an order for X9315WST1 through Aetrix?
Please submit a Request for Quotation (RFQ) for X9315WST1 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 X9315WST1 reliable?
The price and inventory of X9315WST1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X9315WST1 is usually 5 days.
3.What payment methods are accepted for X9315WST1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9315WST1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9315WST1?
X9315WST1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9315WST1 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 X9315WST1?
For technical support, including X9315WST1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9315WST1 requirements.
6.How does Aetrix verify that X9315WST1 is sourced from the original manufacturer or authorized distributors?
All X9315WST1 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 X9315WST1 meets industry standards.
7.What is the process for return or replacement of X9315WST1?
All X9315WST1 units undergo pre-shipment inspection (PSI). If there is an issue with X9315WST1, 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 X9315WST1 part is unused and in its original packaging.
Return procedure for X9315WST1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
X9315WST1 Tags
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MCP4018T-103E/LT
Microchip Technology
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MCP4018T-503E/LT
Microchip Technology
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MCP4011T-103E/SN
Microchip Technology
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MCP4018T-104E/LT
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MCP4017T-503E/LT
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MCP4018T-502E/LT
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MCP4017T-103E/LT
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MCP4531T-103E/MF
Microchip Technology
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MCP4021T-202E/SN
Microchip Technology
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MCP4023T-103E/CH
Microchip Technology
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MCP4022T-503E/CH
Microchip Technology
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MCP4551T-502E/MS
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