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Renesas X9314WST2
- Part No.:
- X9314WST2
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
X9314WST2.pdf
- Description:
- IC DGTL POT 10KOHM 32TAP 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,374
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Product details
Overview
X9314WST2 from Intersil is a solid-state, nonvolatile, digitally controlled potentiometer with 32 log-taper taps, 10kΩ end-to-end resistance, and ±5V terminal voltage rating; it functions as a three-terminal potentiometer or two-terminal variable resistor for precision analog trimming in embedded control and signal conditioning circuits.
For engineers reviewing the X9314WST2 datasheet, X9314WST2 pinout, X9314WST2 application, or X9314WST2 equivalent, this page delivers verified specifications, validated pin functions, real-world use cases, and confirmed alternative parts - all aligned to the FN8178 Rev 3.00 datasheet and Intersil's official ordering information for the X9314WST2 variant.
Technical Context
The X9314WST2 implements a 5-bit up/down counter driving a 31-element resistor array with make-before-break electronic switches; wiper position is stored in nonvolatile memory upon CS↑ while INC = HIGH and recalled automatically at power-up. Its log taper provides 0.07±0.003 step-size linearity per tap in dB attenuation.
It operates from 3V to 5.5V (per X9314WMIZ-3 lineage), supports ±1mA wiper current, and maintains 100-year data retention. The device uses a three-wire serial interface (CS, U/D, INC) with 100ns minimum setup timing and 100–500µs wiper response (tIW).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| End-to-End Resistance | 10kΩ ±20% - sets full-scale analog range for gain/offset adjustment in op-amp feedback networks. |
| Taper Profile | Logarithmic - enables precise audio volume control and exponential sensor calibration curves. |
| Wiper Resistance | 40Ω typical - minimizes insertion error when used as a variable gain element in low-impedance paths. |
| Terminal Voltage Range | ±5V referenced to VSS - supports bipolar signal conditioning without external level-shifting. |
| Nonvolatile Storage | 100-year retention - ensures factory-trimmed settings persist across product lifecycle without backup power. |
| Supply Voltage Range | 3V to 5.5V - compatible with modern mixed-signal systems using 3.3V or 5V rails. |
| Standby Current | <500µA max - enables low-power operation during system sleep modes. |
Pinout & Package
Package: 8-lead MSOP (M8.118), RoHS-compliant, Pb-free plus anneal finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VH/RH | High terminal of resistor array | Fixed end of potentiometer; voltage reference point for log-taper attenuation; rated ±5V relative to VSS. |
| VL/RL | Low terminal of resistor array | Fixed opposite end; polarity is directional (not absolute voltage); defines lower bound of wiper travel. |
| VW/RW | Wiper output terminal | Electrically movable node; connects to one of 32 tap points; series resistance ≤100Ω impacts signal integrity. |
| VCC | Positive supply input | 3V–5.5V digital/analog rail; powers logic and array switches; no sequencing constraints with VH/VL. |
| VSS | Ground reference | Analog and digital common; serves as return path for wiper current and logic inputs. |
| CS | Chip select input | Active-low enable; storage trigger when rising edge occurs with INC = HIGH. |
| U/D | Direction control input | Defines increment/decrement behavior on next INC edge; may be changed dynamically during CS = LOW. |
| INC | Increment clock input | Negative-edge triggered; advances wiper one tap; timing-critical (tCYC ≥4µs, tIW = 100–500µs). |
Key Features
| Feature | Design Value |
|---|---|
| Log-taper 32-tap resolution | Enables smooth, perceptually linear volume control and sensor response matching without microcontroller interpolation. |
| Nonvolatile wiper position store | Eliminates need for external EEPROM or startup calibration routines in field-deployed equipment. |
| Three-wire serial interface | Reduces GPIO count vs. I²C/SPI; compatible with simple MCU GPIOs and avoids protocol stack overhead. |
| ±5V terminal voltage rating | Supports direct connection to bipolar op-amp stages (e.g., in active filters or instrumentation amps) without clamping diodes. |
| Make-before-break switching | Prevents open-circuit transients during wiper movement - critical for stable biasing in sensitive analog front-ends. |
Applications
| Audio Volume Control | DC Offset Calibration |
|---|---|
|
Use Scenario: Adjusting gain in headphone amplifier feedback loop with user-facing rotary encoder interface. IC Role / Device Role / Timing Role: Digitally programmable analog attenuator replacing mechanical potentiometer; wiper updated synchronously with encoder pulses. Use Value: Log taper matches human loudness perception; nonvolatile recall restores last volume setting after power cycle. |
Use Scenario: Compensating thermal drift in precision temperature sensor signal chain using MCU-driven calibration routine. IC Role / Device Role / Timing Role: Two-terminal variable resistor in op-amp summing junction; wiper position adjusted during factory test and retained indefinitely. Use Value: 100-year data retention eliminates recalibration requirements over product lifetime; ±5V rating handles bipolar offset ranges. |
| Programmable Gain Amplifier | Power Supply Trim |
|
Use Scenario: Setting gain of transimpedance amplifier in optical receiver module via firmware-controlled resistance ratio. IC Role / Device Role / Timing Role: Three-terminal potentiometer configuring feedback-to-input resistance ratio; updated during initialization or dynamic range adaptation. Use Value: 40Ω typical wiper resistance minimizes gain error contribution; 3V–5.5V VCC supports both 3.3V and 5V system domains. |
Use Scenario: Fine-tuning output voltage of adjustable DC-DC converter during final test to meet ±0.5% tolerance spec. IC Role / Device Role / Timing Role: Precision trim element in resistor divider network feeding voltage feedback pin; position stored once post-calibration. Use Value: ±20% RTOTAL tolerance accommodated by digital calibration; RoHS-compliant Pb-free finish meets industrial safety standards. |
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-step linear taper, 10kΩ; requires external pull-ups and protocol stack. | Better suited for multi-channel trimming where bus efficiency matters; lacks log taper and ±5V terminal rating. | Select when I²C infrastructure exists and dual independent pots are needed; not drop-in for X9314WST2's 3-wire/log-taper use case. |
| MCP41010-I/P | SPITM interface, 256-step linear taper, 10kΩ; volatile wiper position; no nonvolatile store capability. | Requires host MCU to reinitialize wiper at every power-on; unsuitable for unattended recalibration-free operation. | Choose for cost-sensitive, high-resolution linear adjustment where external memory or startup sequence is acceptable. |
Compared with AD5243BRMZ10 and MCP41010-I/P, the X9314WST2 uniquely combines log taper, nonvolatile storage, ±5V bipolar operation, and minimal 3-wire control - making it optimal for audio, sensor offset, and power trim where analog fidelity and zero-maintenance persistence are required.
Availability
X9314WST2 is available at Aetrix Electronics and suitable for audio volume control, DC offset calibration, programmable gain amplifier design, and power supply trim requiring stable component supply across industrial and embedded production cycles.
Supply support for X9314WST2 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 power management ICs with focus on reliability, precision, and industrial-grade robustness.
The X9314WST2 belongs to Intersil's XDCP™ (eXternally Controlled Digital Potentiometer) family, engineered specifically for replacing mechanical potentiometers in trimming, calibration, and analog control applications where digital programmability and nonvolatile retention are essential.
FAQ
What is the terminal voltage rating of the X9314WST2?
The X9314WST2 supports ±5V applied between VH/RH and VL/RL terminals relative to VSS, enabling direct integration into bipolar analog signal paths such as op-amp-based filters and instrumentation amplifiers without external protection circuitry. This rating is specified in the Absolute Maximum Ratings table of FN8178 Rev 3.00 and applies across the full operating temperature range.
Does the X9314WST2 retain its wiper position after power loss?
Yes, the X9314WST2 stores wiper position in nonvolatile memory with 100-year data retention. When CS transitions HIGH while INC is HIGH, the current counter value is latched into memory. Upon subsequent power-up, the X9314WST2 automatically recalls that stored position and configures the wiper accordingly - no external memory or initialization code is required.
What package type is used for the X9314WST2?
The X9314WST2 is packaged in an 8-lead MSOP (Mini Small Outline Package) with outline drawing M8.118. It features Pb-free plus anneal termination, complies with RoHS, and has a body dimension of 3.0mm × 3.0mm × 1.1mm max height. This compact footprint supports high-density PCB layouts in space-constrained embedded systems.
How does the log taper of the X9314WST2 differ from linear taper digital potentiometers?
The X9314WST2 implements a logarithmic taper with step-size variation of 0.07±0.003 per tap, optimized for perceptual linearity in audio applications. Unlike linear-taper devices (e.g., MCP41010), it delivers finer resolution at low attenuation levels and coarser steps at high attenuation - matching human hearing response and eliminating need for software-based curve mapping.
Can the X9314WST2 be used as a two-terminal variable resistor?
Yes, the X9314WST2 can operate as a two-terminal variable resistor by connecting either VH/RH or VL/RL to VW/RW and using the remaining terminal with VSS or VCC. In this configuration, it provides digitally adjustable resistance from ~40Ω (wiper resistance) up to 10kΩ, maintaining the same log taper behavior and nonvolatile storage functionality as in three-terminal mode.
X9314WST2 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:
- Logarithmic
- 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):
- ±600ppm/°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-SOIC
- Operating Temperature:
- 0°C ~ 70°C
- Resistance - Wiper (Ohms) (Typ):
- 40
X9314WST2 FAQ
1.How can I place an order for X9314WST2 through Aetrix?
Please submit a Request for Quotation (RFQ) for X9314WST2 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 X9314WST2 reliable?
The price and inventory of X9314WST2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X9314WST2 is usually 5 days.
3.What payment methods are accepted for X9314WST2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9314WST2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9314WST2?
X9314WST2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9314WST2 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 X9314WST2?
For technical support, including X9314WST2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9314WST2 requirements.
6.How does Aetrix verify that X9314WST2 is sourced from the original manufacturer or authorized distributors?
All X9314WST2 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 X9314WST2 meets industry standards.
7.What is the process for return or replacement of X9314WST2?
All X9314WST2 units undergo pre-shipment inspection (PSI). If there is an issue with X9314WST2, 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 X9314WST2 part is unused and in its original packaging.
Return procedure for X9314WST2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
X9314WST2 Tags
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