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Renesas X9317WM8Z
- Part No.:
- X9317WM8Z
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
X9317WM8Z.pdf
- Description:
- IC DGTL POT 10KOHM 100TAP 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,855
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Product details
Overview
X9317WM8Z from Renesas Electronics is a digitally controlled potentiometer (XDCP™) implementing a 100-tap, 10kΩ end-to-end resistance array with nonvolatile wiper position storage. It operates from 2.7V to 5.5V, consumes <5µA in standby, and uses a 3-wire up/down interface (CS/U/D/INC) for precise analog trimming in voltage divider or variable resistor configurations. It is used for LCD bias control, laser diode bias adjustment, and gain/offset trim in embedded analog signal chains.
For engineers reviewing the X9317WM8Z datasheet, X9317WM8Z pinout, X9317WM8Z application, or X9317WM8Z equivalent, this page delivers verified electrical specifications, MSOP-8 package details, wiper timing behavior, nonvolatile store/reload sequence, and real-world use cases requiring stable, low-noise, memory-retentive resistance tuning.
Technical Context
The X9317WM8Z integrates a 99-element resistor ladder with make-before-break wiper switching, a 7-bit up/down counter, and EEPROM-based nonvolatile memory for wiper position retention. Its control logic responds to edge-triggered INC signals under active CS, with U/D determining direction-no clock or serial protocol required.
It supports both three-terminal potentiometer (voltage divider) and two-terminal variable resistor (current control) topologies. Temperature-compensated design ensures ±300 ppm/°C total resistance drift and ±20 ppm/°C ratiometric tracking, enabling stable DC biasing across 0°C to +70°C operation.
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 Resolution | 100 positions (0–99) - enables 1% step resolution for fine analog calibration |
| Supply Voltage Range | 2.7V to 5.5V - supports single-supply operation across industrial and battery-powered systems |
| Standby Current | <5µA - minimizes quiescent power in always-on or low-duty-cycle trimming applications |
| Wiper Resistance | 200Ω typical (400Ω max at 2.7V) - contributes predictable series loss in precision feedback paths |
| Nonvolatile Endurance | 100,000 write cycles - ensures long-term reliability for field-adjustable calibration routines |
| Wiper Noise | −120 dBV (ref 1kHz) - maintains signal integrity in sensitive audio, sensor, and reference circuits |
Pinout & Package
Package: 8-lead MSOP (M8.118), RoHS-compliant, 3.0mm × 3.0mm body, 0.65mm pitch, 0.95mm height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (INC) | Increment clock input | Negative-edge-triggered control line; toggling moves wiper one tap per edge under active CS |
| 2 (U/D) | Direction control input | Logic level sets wiper movement direction (HIGH = up, LOW = down) during INC transitions |
| 3 (RH) | High terminal | Fixed end of resistor array; connects to higher-potential node in voltage divider configuration |
| 4 (VSS) | Ground reference | Return path for supply and signal; must be low-impedance for noise-sensitive analog operation |
| 5 (RW) | Wiper output | Movable terminal; provides tapped voltage or adjustable resistance point with 200Ω typical series resistance |
| 6 (RL) | Low terminal | Fixed end of resistor array; connects to lower-potential node (e.g., ground or negative rail) |
| 7 (CS) | Chip select | Active-low enable; initiates wiper control when LOW; triggers nonvolatile store when rising edge occurs with INC HIGH |
| 8 (VCC) | Power supply | 2.7V–5.5V CMOS supply; powers internal logic, memory, and resistor array; requires local 0.1µF decoupling |
Key Features
| Feature | Design Value |
|---|---|
| Solid-state potentiometer architecture | Eliminates mechanical wear, contact bounce, and environmental sensitivity inherent in analog trimmers |
| Nonvolatile wiper position storage | Recalls last-set tap on power-up-enables factory calibration persistence without external memory or boot firmware |
| Temperature-compensated resistor array | ±300 ppm/°C absolute drift and ±20 ppm/°C ratiometric tracking ensure stable gain/offset over temperature |
| Make-before-break wiper switching | Prevents open-circuit transients during tap transitions-critical for uninterrupted bias in amplifier feedback loops |
| Low-noise analog performance | −120 dBV noise floor preserves SNR in precision reference, sensor conditioning, and audio signal paths |
Applications
| LCD Bias Control | Laser Diode Bias Control |
|---|---|
|
Use Scenario: Adjusting VCOM or gamma voltage in TFT-LCD column drivers to maintain consistent contrast and grayscale fidelity across temperature and panel aging. IC Role / Device Role / Timing Role: Three-terminal potentiometer providing programmable DC bias voltage referenced between RH (VDD) and RL (ground), with RW feeding high-impedance op-amp input. Use Value: Enables factory-set and field-updatable gamma correction without manual trimpots, reducing assembly cost and improving long-term display stability. |
Use Scenario: Setting precise bias current for edge-emitting laser diodes in optical transceivers, ensuring stable optical output power and wavelength under thermal drift. IC Role / Device Role / Timing Role: Two-terminal variable resistor placed in series with laser cathode to regulate forward current via feedback loop of constant-current driver IC. Use Value: Delivers 100-step resolution and nonvolatile recall to maintain calibrated optical power after power cycling-critical for Class 1 laser safety compliance. |
| Voltage Regulator Output Trim | DC Offset Adjustment in Instrumentation Amplifiers |
|
Use Scenario: Fine-tuning output voltage of adjustable LDOs or switching regulators (e.g., LM317, TLV7x) to compensate for component tolerances and PCB trace losses. IC Role / Device Role / Timing Role: Three-terminal potentiometer replacing mechanical trimmer in feedback divider network (RH to VOUT, RL to GND, RW to FB pin). Use Value: Allows post-manufacturing calibration and field recalibration without soldering, supporting tighter output tolerance (±0.5%) across production lots. |
Use Scenario: Nulling input offset voltage in precision instrumentation amplifiers (e.g., AD620, INA128) used in strain gauge or thermocouple front-ends. IC Role / Device Role / Timing Role: Two-terminal variable resistor in offset null circuit, where RW and RL form adjustable voltage divider injecting correction current into amplifier's null pins. Use Value: Achieves sub-mV offset correction with 1% step resolution and retains zero-point setting through power cycles-essential for high-resolution data acquisition. |
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, 10kΩ, 2.7–5.5V, 5ppm/°C tempco, no internal memory (requires external EEPROM) | Requires host MCU I²C stack and external nonvolatile storage for power-up recall | Select if I²C bus integration and ultra-low tempco outweigh need for autonomous recall |
| MCP41010-I/P | SPITM interface, 257-tap, 10kΩ, 2.7–5.5V, volatile wiper register only (no EEPROM) | Needs continuous MCU supervision; loses setting on power loss unless externally saved | Select for higher resolution and SPI compatibility where system firmware handles calibration persistence |
Compared with AD5171BRMZ-10 and MCP41010-I/P, the X9317WM8Z uniquely combines 100-tap resolution, autonomous nonvolatile recall, and minimal 3-wire control-reducing MCU GPIO count and eliminating external memory or protocol overhead in self-contained analog trimming systems.
Availability
X9317WM8Z is available at Aetrix Electronics and suitable for LCD bias control, laser diode bias adjustment, and voltage regulator output trim requiring stable component supply, long-term calibration retention, and RoHS-compliant MSOP packaging.
Supply support for X9317WM8Z 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 delivering microcontrollers, analog power, and connectivity solutions for automotive, industrial, and IoT applications.
The X9317WM8Z belongs to Renesas' XDCP™ (Digitally Controlled Potentiometer) product line, designed specifically for replacing mechanical trimmers in precision analog circuits where programmability, reliability, and nonvolatile memory are essential.
FAQ
What is the operating temperature range for the X9317WM8Z?
The X9317WM8Z is rated for commercial operation from 0°C to +70°C. Its MSOP-8 package (M8.118) and internal temperature compensation support stable 10kΩ resistance and wiper linearity across this range, with ±300 ppm/°C total resistance drift and ±20 ppm/°C ratiometric tracking confirmed in characterization. The X9317WM8IZ variant extends this to −40°C to +85°C.
How does the X9317WM8Z store and recall wiper position?
The X9317WM8Z stores the current wiper position in on-chip EEPROM by raising CS from LOW to HIGH while INC is held HIGH. Upon power-up, the stored value is automatically loaded into the wiper counter, positioning RW at the last-saved tap. This occurs within 5µs after VCC stabilizes, requiring no host initialization-enabling true "set-and-forget" analog calibration in the X9317WM8Z.
Can the X9317WM8Z be used as a two-terminal variable resistor?
Yes, the X9317WM8Z supports two-terminal operation by connecting RH and RW (or RL and RW) as the adjustable resistance terminals, with the third terminal left unconnected or tied to a fixed potential. In this mode, resistance between RW and the selected fixed terminal varies from near-zero (tap 0 or 99) to full 10kΩ, maintaining 200Ω typical wiper resistance and ±20% end-to-end tolerance-ideal for current-limiting or gain-setting applications.
What is the maximum wiper current rating for the X9317WM8Z?
The X9317WM8Z specifies a maximum wiper current (IW) of ±4.4mA under all conditions. At 2.7V supply, wiper resistance rises to 1000Ω max, limiting safe continuous current to ~2.7mA for thermal stability. For applications exceeding this-such as driving LED bias-external current limiting or buffering with an op-amp is recommended to protect the X9317WM8Z wiper switch integrity.
Does the X9317WM8Z require external decoupling capacitors?
Yes, a 0.1µF ceramic capacitor must be placed between VCC and VSS, as close as possible to pins 8 and 4 of the X9317WM8Z. This suppresses high-frequency noise coupling into the resistor array and ensures stable logic operation during INC toggling. Failure to include this capacitor may cause erratic wiper movement or increased noise in analog output paths.
X9317WM8Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- XDCP™
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- 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:
- 5V
- Features:
- -
- Tolerance:
- ±20%
- Temperature Coefficient (Typ):
- ±300ppm/°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-MSOP
- Operating Temperature:
- 0°C ~ 70°C
- Resistance - Wiper (Ohms) (Typ):
- 200
X9317WM8Z FAQ
1.How can I place an order for X9317WM8Z through Aetrix?
Please submit a Request for Quotation (RFQ) for X9317WM8Z 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 X9317WM8Z reliable?
The price and inventory of X9317WM8Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X9317WM8Z is usually 5 days.
3.What payment methods are accepted for X9317WM8Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9317WM8Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9317WM8Z?
X9317WM8Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9317WM8Z 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 X9317WM8Z?
For technical support, including X9317WM8Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9317WM8Z requirements.
6.How does Aetrix verify that X9317WM8Z is sourced from the original manufacturer or authorized distributors?
All X9317WM8Z 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 X9317WM8Z meets industry standards.
7.What is the process for return or replacement of X9317WM8Z?
All X9317WM8Z units undergo pre-shipment inspection (PSI). If there is an issue with X9317WM8Z, 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 X9317WM8Z part is unused and in its original packaging.
Return procedure for X9317WM8Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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