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Renesas X9314WS
- Part No.:
- X9314WS
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
X9314WS.pdf
- Description:
- IC DGTL POT 10KOHM 32TAP 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,889
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Product details
Overview
X9314WS from Intersil is a nonvolatile digitally controlled potentiometer (XDCP™) with 32 log-taper taps, 10kΩ end-to-end resistance, ±5V terminal voltage rating, and three-wire up/down serial interface - used for precision resistance trimming in analog signal conditioning circuits.
For engineers reviewing the X9314WS datasheet, X9314WS pinout, X9314WS application, or X9314WS equivalent, key selection criteria include wiper position retention on power-up, 40Ω typical wiper resistance, 5V ±10% supply operation, and compatibility with 8-lead SOIC layout constraints.
Technical Context
The X9314WS implements a 5-bit up/down counter driving a 32-position decoder to select one of 31 resistive elements in series; wiper movement follows make-before-break switching to prevent open-circuit transients during tap transitions.
Nonvolatile storage is triggered by a HIGH-to-LOW transition on CS while INC is held HIGH, preserving the last wiper position across power cycles with 100-year data retention; the device operates within 0°C to +70°C and supports ±1mA wiper current with <500µA standby supply current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| End-to-End Resistance | 10kΩ ±20% - sets full-scale analog gain/attenuation range in voltage divider configurations |
| Taper Profile | Logarithmic - enables perceptually linear volume or brightness control in audio/lighting applications |
| Wiper Resistance | 40Ω typical - minimizes insertion loss and distortion when used as variable gain element |
| Terminal Voltage Range | ±5V referenced to VSS - supports bipolar signal routing without external level-shifting |
| Supply Voltage | 5V ±10% - compatible with standard TTL/CMOS logic rails and eliminates need for LDO regulation |
| Standby Current | <500µA max - enables low-power system sleep modes without losing trim state |
| Data Retention | 100 years - ensures calibration stability over product lifetime without battery backup |
Pinout & Package
Package: 8-lead narrow-body SOIC (JEDEC MS-012-AA, package drawing M8.15), RoHS-compliant Pb-free plus anneal finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VH/RH | High-side fixed terminal | Connects to maximum potential node in potentiometer configuration; voltage range -5V to +5V relative to VSS |
| VL/RL | Low-side fixed terminal | Connects to minimum potential node; polarity relative to VH/RH defines wiper direction per U/D input |
| VW/RW | Wiper output terminal | Delivers tapped voltage; series resistance 40Ω typical affects loading in high-impedance feedback paths |
| VCC | Positive supply | 5V ±10% digital core and memory supply; powers internal counter, decoder, and NV memory circuitry |
| VSS | Ground reference | Common return for all analog and digital functions; must be low-impedance to minimize noise coupling |
| U/D | Direction control input | Static logic level selects increment/decrement mode; may be changed dynamically during CS LOW enable |
| INC | Edge-triggered step command | Negative-edge sensitive; each pulse moves wiper one tap; timing tCYC ≥ 4µs required for reliable operation |
| CS | Chip select and store enable | Active LOW enables interface; HIGH transition with INC HIGH initiates nonvolatile store sequence |
Key Features
| Feature | Design Value |
|---|---|
| Nonvolatile wiper position storage | Eliminates need for external EEPROM or MCU-based calibration storage; restores factory or user-set trim at every power-on |
| Logarithmic taper | Matches human perception response curves - critical for smooth audio volume control without audible stepping |
| Make-before-break wiper switching | Prevents momentary open-circuit condition during tap transitions - avoids glitches in active filter or amplifier feedback paths |
| Three-wire serial interface | Reduces PCB routing complexity vs. SPI/I²C; requires only U/D, INC, and CS - no clock or data lines needed |
| ±5V analog terminal rating | Supports direct connection to op-amp rails or AC-coupled signals without clamping diodes or level shifters |
Applications
| Audio Volume Control | DC Offset Calibration |
|---|---|
|
Use Scenario: Adjusting gain in line-level audio preamplifier stages using dual-channel op-amps. IC Role / Device Role / Timing Role: Two-terminal variable resistor in inverting amplifier feedback path to set closed-loop gain. Use Value: Log taper provides smooth, perceptually linear volume change; nonvolatile recall ensures consistent startup level after power cycling. |
Use Scenario: Compensating for input offset voltage drift in precision instrumentation amplifiers over temperature. IC Role / Device Role / Timing Role: Three-terminal potentiometer configured as adjustable voltage divider feeding op-amp null port. Use Value: 10kΩ resistance matches typical null network impedance; ±5V terminal rating accommodates rail-to-rail op-amp outputs. |
| LCD Contrast Adjustment | LED Brightness Trim |
|
Use Scenario: Setting contrast bias voltage for character LCD modules in industrial HMIs. IC Role / Device Role / Timing Role: Voltage divider between VDD and VSS to generate adjustable negative bias (V0) for LCD segment drivers. Use Value: 32-tap resolution allows fine-grained contrast tuning; 0°C to +70°C rating matches commercial display operating range. |
Use Scenario: Calibrating forward current in constant-current LED driver feedback loops. IC Role / Device Role / Timing Role: Two-terminal variable resistor in current-sense amplifier gain path to adjust LED current setpoint. Use Value: 40Ω wiper resistance minimizes error contribution in milliamp-level sense paths; 10kΩ total resistance enables stable gain setting. |
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 | Single-channel, I²C interface, 10kΩ, 64-tap linear taper, 2.7–5.5V supply | Requires I²C host controller; linear taper unsuitable for audio volume; higher resolution but no log taper | Select when I²C bus availability and linear adjustment are prioritized over analog signal fidelity |
| MCP41010-I/P | Single-channel, SPI interface, 10kΩ, 257-tap linear taper, 2.7–5.5V supply, volatile memory only | No nonvolatile storage - loses setting on power loss; requires MCU initialization at boot | Select when high tap count and SPI compatibility outweigh need for power-loss immunity |
Compared with AD5241BRMZ10 and MCP41010-I/P, the X9314WS uniquely combines log taper, nonvolatile storage, and three-wire simplicity - making it optimal for cost-sensitive, self-contained analog trim where audio fidelity or calibration persistence is essential.
Availability
X9314WS is available at Aetrix Electronics and suitable for audio volume control, DC offset calibration, LCD contrast adjustment, and LED brightness trim requiring stable component supply and long-term calibration integrity.
Supply support for X9314WS 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 with emphasis on power management, precision analog, and interface solutions.
The X9314WS belongs to Intersil's XDCP™ family of nonvolatile digital potentiometers engineered for robust, maintenance-free resistance trimming in commercial-grade analog systems.
FAQ
What is the wiper resistance specification for the X9314WS?
The X9314WS has a typical wiper resistance of 40Ω, measured at ±1mA wiper current and 5V supply. This low value minimizes signal attenuation and phase shift when used in high-impedance feedback networks. The datasheet specifies a maximum of 100Ω under worst-case conditions, ensuring predictable performance in precision gain-setting applications.
Does the X9314WS retain its wiper position after power cycling?
Yes, the X9314WS stores the wiper position in nonvolatile memory and automatically recalls it upon power-up. This occurs without external intervention - the last stored value is loaded into the internal counter within 500µs after VCC stabilizes. Data retention is rated for 100 years, supporting long-life industrial deployments.
Can the X9314WS operate with bipolar analog signals?
Yes, the X9314WS supports terminal voltages from -5V to +5V relative to VSS, enabling direct use with bipolar op-amp circuits or AC-coupled signals. Its analog terminals (VH/RH, VL/RL, VW/RW) are rated for ±5V, and the internal switches tolerate this full range without damage or parameter shift.
What is the interface protocol used by the X9314WS?
The X9314WS uses a three-wire up/down serial interface with dedicated U/D (direction), INC (negative-edge-triggered step), and CS (chip select/store enable) inputs. It does not require a clock or data line - simplifying host MCU GPIO usage and eliminating timing-critical clock synchronization.
Is the X9314WS pin-compatible with other members of the X9314 family?
Yes, the X9314WS shares identical 8-lead SOIC pinout (M8.15) with X9314WSIZ and X9314WSZ-3. All variants use the same VH/RH, VL/RL, VW/RW, VCC, VSS, U/D, INC, and CS pin assignments - allowing drop-in replacement within the same temperature and supply voltage constraints.
X9314WS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- XDCP™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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
X9314WS FAQ
1.How can I place an order for X9314WS through Aetrix?
Please submit a Request for Quotation (RFQ) for X9314WS 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 X9314WS reliable?
The price and inventory of X9314WS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X9314WS is usually 5 days.
3.What payment methods are accepted for X9314WS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9314WS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9314WS?
X9314WS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9314WS 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 X9314WS?
For technical support, including X9314WS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9314WS requirements.
6.How does Aetrix verify that X9314WS is sourced from the original manufacturer or authorized distributors?
All X9314WS 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 X9314WS meets industry standards.
7.What is the process for return or replacement of X9314WS?
All X9314WS units undergo pre-shipment inspection (PSI). If there is an issue with X9314WS, 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 X9314WS part is unused and in its original packaging.
Return procedure for X9314WS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
X9314WS Tags
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MCP4018T-103E/LT
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MCP4018T-503E/LT
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MCP4011T-103E/SN
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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
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MCP4021T-202E/SN
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MCP4023T-103E/CH
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MCP4022T-503E/CH
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MCP4551T-502E/MS
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