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Renesas X9317WS8I-2.7
- Part No.:
- X9317WS8I-2.7
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
X9317WS8I-2.7.pdf
- Description:
- IC DGTL POT 10KOHM 100TAP 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,845
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Product details
Overview
X9317WS8I-2.7 from Renesas Electronics is a digitally controlled potentiometer (XDCP™) with 100 wiper tap points, nonvolatile wiper position storage, and 2.7V to 5.5V supply operation. It implements a 99-element resistor array with temperature-compensated end-to-end resistance tolerance of ±20%, wiper resistance ≤400Ω at 2.7V, and standby current <5µA. It serves as a three-terminal voltage divider or two-terminal variable resistor in precision analog trim applications.
For engineers reviewing the X9317WS8I-2.7 datasheet, X9317WS8I-2.7 pinout, X9317WS8I-2.7 application, or X9317WS8I-2.7 equivalent, key selection criteria include its 2.7V minimum VCC support, -40°C to +85°C industrial temperature range, SOIC-8 package compatibility, and 3-wire up/down interface timing (tCYC = 2µs, tIW = 1–5µs).
Technical Context
The X9317WS8I-2.7 integrates a 7-bit up/down counter, decoder, and nonvolatile memory to control wiper position across 100 discrete taps. Its resistor array uses temperature-compensated thin-film elements yielding ±300 ppm/°C total resistance TC and ±20 ppm/°C ratiometric TC - critical for stable voltage division under thermal drift.
Operation relies on a 3-wire serial interface (CS, U/D, INC) with negative-edge-triggered INC and make-before-break wiper switching. Wiper position is stored in nonvolatile memory upon CS↑ while INC = HIGH, enabling automatic recall at power-up without external configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.7V to 5.5V - supports single-supply low-voltage systems including battery-powered and 3.3V logic interfaces. |
| RTOTAL | 10kΩ ±20% - defines full-scale resistance for gain/offset trim; tolerance impacts absolute accuracy in open-loop configurations. |
| Wiper Resistance (RW) | ≤400Ω at VCC = 2.7V - limits voltage error in high-impedance feedback paths and affects linearity at low tap positions. |
| Standby Current (ISB) | <5µA - enables ultra-low-power retention during system sleep modes without compromising wiper state. |
| Resolution | 1% (1/99 step) - provides fine-grained analog adjustment equivalent to mechanical potentiometers with 100-turn precision. |
| Nonvolatile Endurance | 100,000 data changes per bit - ensures long-term reliability in field-adjustable calibration systems requiring repeated retrimming. |
| Temperature Range | -40°C to +85°C - qualified for industrial environments where thermal stability of bias points is essential. |
Pinout & Package
Package: 8-lead narrow-body SOIC (M8.15E), RoHS-compliant, Pb-free, moisture sensitivity level per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (INC) | Increment clock input | Negative-edge-triggered control signal; toggling moves wiper up/down per U/D state; determines timing resolution (tCYC = 2µs min). |
| 2 (U/D) | Direction control input | Logic level selects wiper movement direction during INC transitions; allows bidirectional trimming without reinitialization. |
| 3 (RH) | High terminal | Fixed end of resistor array; connected to highest potential node in voltage divider; defines upper reference for wiper output. |
| 4 (VSS) | Ground reference | System ground return path for all internal circuitry and potentiometer terminals; must be low-impedance for noise immunity. |
| 5 (RW) | Wiper output | Movable terminal delivering intermediate voltage/current; series resistance ≤400Ω affects loading in high-gain amplifier feedback networks. |
| 6 (RL) | Low terminal | Fixed end of resistor array; tied to lowest potential node (e.g., ground or negative rail); completes resistive divider path. |
| 7 (CS) | Chip select | Active-low enable; initiates wiper movement when LOW; triggers nonvolatile store on rising edge if INC = HIGH. |
| 8 (VCC) | Supply voltage | Power input for CMOS control logic and switch drivers; supports 2.7V–5.5V operation with ICC1 ≤80µA active current. |
Key Features
| Feature | Design Value |
|---|---|
| Nonvolatile wiper storage | Retains last programmed position across power cycles - eliminates boot-time recalibration in embedded systems. |
| Temperature-compensated resistor array | ±300 ppm/°C total resistance TC and ±20 ppm/°C ratiometric TC - maintains voltage division accuracy over industrial temperature range. |
| Make-before-break wiper switching | Prevents open-circuit transients during tap transitions - avoids glitches in sensitive analog feedback loops. |
| Low-power CMOS architecture | Standby current <5µA and active current ≤80µA - extends battery life in portable instrumentation and sensor nodes. |
| 3-wire serial interface | No protocol overhead or address decoding required - simplifies microcontroller GPIO usage and reduces firmware complexity. |
Applications
| LCD Bias Control | Laser Diode Bias Control |
|---|---|
Use Scenario: Adjusting VCOM or gamma reference voltages in TFT-LCD panels to compensate for panel-to-panel variation and aging. IC Role / Device Role / Timing Role: Three-terminal voltage divider setting precise DC bias levels; wiper position updated once per production calibration. Use Value: Enables factory-trimmed display uniformity without manual potentiometers; nonvolatile storage guarantees consistent startup behavior across product lifetime. |
Use Scenario: Setting precise bias current for laser diodes in optical transceivers and fiber sensing modules. IC Role / Device Role / Timing Role: Two-terminal variable resistor in constant-current source configuration; wiper adjusted during system initialization or thermal compensation routines. Use Value: Maintains stable optical output power over temperature (-40°C to +85°C) using ratiometric TC performance and eliminates mechanical drift. |
| Voltage Regulator Output Trim | DC Offset Adjustment in Instrumentation Amplifiers |
Use Scenario: Fine-tuning output voltage of adjustable LDOs or switching regulators to meet tight tolerance specs (e.g., ±0.5%) in medical power supplies. IC Role / Device Role / Timing Role: Three-terminal potentiometer replacing fixed resistor in feedback divider network; wiper position set during final test and retained indefinitely. Use Value: Achieves post-manufacturing calibration without soldering; 10kΩ RTOTAL minimizes regulator loop loading while supporting 1% resolution. |
Use Scenario: Nulling input offset voltage in precision op-amp circuits used in strain gauge or thermocouple signal conditioning. IC Role / Device Role / Timing Role: Two-terminal variable resistor in offset null network; wiper adjusted during system self-test or field maintenance. Use Value: Delivers sub-millivolt offset correction with 1% step resolution; low wiper resistance (≤400Ω) prevents gain error in high-Z null paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digitally controlled potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5171BRMZ-10 | I²C interface, 64-tap resolution, 10kΩ RTOTAL, 2.7–5.5V supply, but no nonvolatile storage - requires external EEPROM or host MCU retention. | Suitable for systems with existing I²C infrastructure and host-controlled calibration; unsuitable for standalone power-cycle retention. | Select when bus-based control and higher integration (e.g., multiple DCPs on one bus) outweigh need for autonomous recall. |
| MCP41HV51-103 | 100-tap SPI interface, 10kΩ RTOTAL, 4.5–24V supply, volatile wiper register only - no nonvolatile memory; requires external storage or periodic refresh. | Fits high-voltage bias applications (e.g., piezo drivers) but adds design complexity for state retention across power loss. | Choose for >5V analog rails where X9317WS8I-2.7's 5.5V max would limit headroom. |
Compared with AD5171BRMZ-10 and MCP41HV51-103, the X9317WS8I-2.7 uniquely combines 100-tap resolution, true nonvolatile wiper storage, 2.7V operation, and 3-wire simplicity - making it optimal for cost-sensitive, self-contained industrial trim functions without host processor dependency.
Availability
X9317WS8I-2.7 is available at Aetrix Electronics and suitable for LCD bias control, laser diode bias adjustment, and voltage regulator output trim requiring stable component supply across industrial temperature ranges and long product lifecycles.
Supply support for X9317WS8I-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
Renesas Electronics is a global semiconductor leader specializing in microcontrollers, analog power, and mixed-signal solutions for automotive, industrial, and IoT applications.
The X9317WS8I-2.7 belongs to Renesas' XDCP™ family of digitally controlled potentiometers, designed specifically for replacing mechanical trimmers in precision analog systems requiring zero-drift calibration, field reprogrammability, and long-term reliability.
FAQ
What is the minimum supply voltage supported by the X9317WS8I-2.7?
The X9317WS8I-2.7 operates down to 2.7V, as specified in its "X9317-2.7" variant designation and confirmed in the Potentiometer Specifications table (VCC = 2.7–5.5V). This enables direct interfacing with 3.3V systems and battery-powered devices without level-shifting, while maintaining full functionality including nonvolatile store and 100-tap resolution.
Does the X9317WS8I-2.7 retain its wiper position after power cycling?
Yes, the X9317WS8I-2.7 stores the wiper position in nonvolatile memory and automatically recalls it on power-up. This behavior is guaranteed by its architecture: a store operation is triggered when CS transitions HIGH while INC is HIGH, and the value persists for 100 years per data retention specification - eliminating need for external memory or host initialization.
What package type and footprint does the X9317WS8I-2.7 use?
The X9317WS8I-2.7 uses an 8-lead narrow-body SOIC package (JEDEC MS-012, Renesas drawing M8.15E), with 1.27mm lead pitch and standard SOIC land pattern. Its dimensions (4.90mm × 3.90mm × 1.75mm max height) match industry-standard SOIC-8 footprints, enabling drop-in replacement of legacy mechanical pots or other SOIC-packaged DCPs.
How does the 3-wire interface of the X9317WS8I-2.7 differ from I²C or SPI protocols?
The X9317WS8I-2.7 uses a dedicated 3-wire up/down interface (CS, U/D, INC) with no clock line or address bits - unlike I²C or SPI. INC is negative-edge-triggered, U/D sets direction, and CS enables operation or initiates nonvolatile store. This eliminates protocol overhead, reduces MCU resource usage, and avoids bus contention, making it ideal for simple GPIO-based trimming.
What is the maximum wiper current rating for the X9317WS8I-2.7 at 2.7V supply?
At VCC = 2.7V, the X9317WS8I-2.7 supports a maximum wiper current (IW) of ±4.4mA, as specified in the Absolute Maximum Ratings table. This corresponds to a worst-case power dissipation of ~12mW across RW (≤1000Ω at 2.7V), well within the device's 10mW power rating for RTOTAL ≥10kΩ - ensuring safe operation in typical voltage-divider or current-source configurations.
X9317WS8I-2.7 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:
- Linear
- Configuration:
- Potentiometer
- Number of Circuits:
- 1
- Number of Taps:
- 100
- 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:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-SOIC
- Operating Temperature:
- -40°C ~ 85°C
- Resistance - Wiper (Ohms) (Typ):
- 400
X9317WS8I-2.7 FAQ
1.How can I place an order for X9317WS8I-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for X9317WS8I-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 X9317WS8I-2.7 reliable?
The price and inventory of X9317WS8I-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 X9317WS8I-2.7 is usually 5 days.
3.What payment methods are accepted for X9317WS8I-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9317WS8I-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9317WS8I-2.7?
X9317WS8I-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9317WS8I-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 X9317WS8I-2.7?
For technical support, including X9317WS8I-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9317WS8I-2.7 requirements.
6.How does Aetrix verify that X9317WS8I-2.7 is sourced from the original manufacturer or authorized distributors?
All X9317WS8I-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 X9317WS8I-2.7 meets industry standards.
7.What is the process for return or replacement of X9317WS8I-2.7?
All X9317WS8I-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with X9317WS8I-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 X9317WS8I-2.7 part is unused and in its original packaging.
Return procedure for X9317WS8I-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
X9317WS8I-2.7 Tags
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