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Renesas X9317WM8T1
- Part No.:
- X9317WM8T1
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
X9317WM8T1.pdf
- Description:
- IC DGTL POT 10KOHM 100TAP 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,586
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Product details
Overview
X9317WM8T1 from Renesas Electronics is a digitally controlled potentiometer (XDCP™) implementing a 99-element resistor array with 100 wiper tap positions, nonvolatile wiper position storage, and 3-wire up/down serial interface. It operates from 2.7V to 5.5V, delivers ±20% end-to-end resistance tolerance, and supports voltage divider or variable resistor configurations in precision analog trimming applications.
For engineers reviewing the X9317WM8T1 datasheet, X9317WM8T1 pinout, X9317WM8T1 application, or X9317WM8T1 equivalent, key selection criteria include its 10kΩ total resistance, MSOP-8 package, -40°C to +85°C industrial temperature range, low 5µA standby current, and nonvolatile recall on power-up - critical for bias control and calibration stability.
Technical Context
The X9317WM8T1 uses a 7-bit up/down counter decoded to select one of 100 wiper positions across a monolithic resistor ladder. Its control logic responds to CS (chip select), U/D (direction), and edge-triggered INC inputs, enabling deterministic wiper movement without microcontroller firmware overhead.
Wiper position is stored in nonvolatile memory upon CS↑ with INC high, ensuring repeatable startup behavior. The device employs make-before-break switching during tap transitions and features temperature-compensated resistive elements with ±300 ppm/°C total resistance drift and ±20 ppm/°C ratiometric coefficient - preserving voltage division accuracy under thermal variation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| End-to-end Resistance | 10 kΩ ±20% - defines full-scale analog adjustment range and load interaction in voltage divider or current-limiting roles |
| Supply Voltage Range | 2.7 V to 5.5 V - enables direct compatibility with 3.3V and 5V systems without level-shifting |
| Wiper Tap Resolution | 100 positions (0–99) - provides 1% step resolution for fine-grained analog tuning |
| Standby Current | <5 µA - minimizes quiescent power in battery-backed or always-on calibration circuits |
| Nonvolatile Endurance | 100,000 write cycles - supports field recalibration over product lifetime without wear-out risk |
| Operating Temperature | -40°C to +85°C - qualified for industrial environments including automotive cabin and industrial PLC modules |
| Wiper Resistance | 200 Ω typical (at 5V) - limits signal path error and thermal noise in high-impedance feedback networks |
Pinout & Package
Package: 8-lead MSOP (M8.118), RoHS-compliant, 3.0 mm × 3.0 mm × 0.85 mm body, exposed pad not present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (INC) | Increment clock input | Negative-edge-triggered control line; toggling moves wiper up/down per U/D state - enables simple GPIO-based adjustment |
| 2 (U/D) | Direction control input | Static logic level defining wiper increment (+) or decrement (-) direction 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 | Primary return path for supply and signal currents; must be low-impedance for noise-sensitive analog operation |
| 5 (RW) | Wiper output | Movable terminal delivering intermediate voltage/current; series resistance ≤400 Ω affects gain accuracy in op-amp feedback |
| 6 (RL) | Low terminal | Fixed end of resistor array; connects to lower-potential node (e.g., ground or negative rail) in three-terminal use |
| 7 (CS) | Chip select | Active-low enable; rising edge with INC high initiates nonvolatile store - prevents accidental writes during operation |
| 8 (VCC) | Positive supply | Power input for logic and analog sections; decoupling required within 1 cm to suppress digital switching noise on RW |
Key Features
| Feature | Design Value |
|---|---|
| Nonvolatile wiper position storage | Retains last-set tap value across power cycles - eliminates need for external EEPROM or MCU initialization code |
| 3-wire serial interface | Requires only CS, U/D, and INC signals - reduces PCB routing complexity vs. SPI/I²C and avoids protocol stack overhead |
| Temperature-compensated resistor array | ±300 ppm/°C absolute TC and ±20 ppm/°C ratiometric TC - maintains voltage division ratio stability across operating temperature |
| Make-before-break wiper switching | Prevents open-circuit transients during tap changes - avoids glitches in op-amp feedback or laser diode bias paths |
| Low-power CMOS design | 80 µA active current and <5 µA standby - suitable for energy-constrained sensor nodes and portable instrumentation |
Applications
| LCD Bias Control | Laser Diode Bias Control |
|---|---|
Use Scenario: Adjusting VCOM or gamma voltage in TFT-LCD panels to compensate for panel-to-panel variation and aging drift. IC Role / Device Role / Timing Role: Three-terminal potentiometer setting reference voltage for source driver ICs. Use Value: 100-tap resolution enables precise grayscale uniformity tuning; nonvolatile recall ensures consistent display startup after power loss. |
Use Scenario: Setting precise bias current for edge-emitting laser diodes in optical transceivers and fiber sensors. IC Role / Device Role / Timing Role: Two-terminal variable resistor in constant-current source feedback loop. Use Value: Low 5µA standby current minimizes dark current error; ±20% RTOTAL tolerance accommodates production spread without calibration. |
| Voltage Regulator Output Trim | DC Offset Adjustment in Signal Chain |
Use Scenario: Fine-tuning output voltage of adjustable LDOs or DC-DC converters in test equipment and programmable power supplies. IC Role / Device Role / Timing Role: Resistor divider element in feedback network of voltage regulator error amplifier. Use Value: 10kΩ RTOTAL matches standard regulator feedback ratios; nonvolatile storage retains user-defined setpoint across maintenance cycles. |
Use Scenario: Nulling input offset voltage in precision instrumentation amplifiers or ADC front-ends. IC Role / Device Role / Timing Role: Adjustable resistor in op-amp summing junction or offset null circuit. Use Value: Low 200Ω typical wiper resistance minimizes offset drift contribution; 1% step resolution achieves sub-mV calibration accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digitally controlled potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5170BRMZ-10 | 256-tap I²C interface, 10kΩ, ±30% RTOTAL, 100-year data retention | Requires I²C host; higher resolution but no native up/down interface | Preferred when system already uses I²C and requires finer than 1% adjustment steps |
| MCP41010-I/P | 256-tap SPI interface, 10kΩ, ±20% RTOTAL, volatile wiper position on power-up | No nonvolatile storage - requires MCU initialization at boot | Selected where SPI is available and external memory or firmware control of startup state is acceptable |
Compared with AD5170BRMZ-10 and MCP41010-I/P, the X9317WM8T1 offers deterministic 3-wire up/down control without protocol overhead and guaranteed power-up to last-stored value - reducing firmware dependencies and improving system robustness in unattended industrial deployments.
Availability
X9317WM8T1 is available at Aetrix Electronics and suitable for LCD bias control, laser diode biasing, voltage regulator trimming, and precision offset adjustment requiring stable component supply across industrial temperature ranges and long-term calibration integrity.
Supply support for X9317WM8T1 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 manufacturer specializing in microcontrollers, analog power devices, and timing solutions for industrial, automotive, and infrastructure markets.
The X9317WM8T1 belongs to Renesas' XDCP™ family of digitally controlled potentiometers, designed specifically for replacing mechanical trimmers in high-reliability analog calibration circuits where manual adjustment is impractical or inaccessible.
FAQ
What is the package type and footprint compatibility of the X9317WM8T1?
The X9317WM8T1 uses an 8-lead MSOP package (JEDEC MO-187-AA compliant, drawing M8.118) with 0.65 mm lead pitch, 3.0 mm × 3.0 mm body, and 0.85 mm height. It shares footprint compatibility with other MSOP-8 devices but is not pin-compatible with SOIC-8 or TSSOP-8 variants of the X9317 family due to different pinouts and thermal pad absence. Always verify land pattern against M8.118 revision 5.
Does the X9317WM8T1 retain its wiper position after power cycling?
Yes, the X9317WM8T1 stores the wiper position in nonvolatile memory and automatically recalls it on power-up. This behavior occurs without external intervention - the device powers up with RW at the last stored tap position. Retention is rated for 100 years under normal operating conditions, making X9317WM8T1 suitable for applications requiring guaranteed repeatability across maintenance intervals or brownout events.
What is the maximum allowable voltage across RH and RL terminals of the X9317WM8T1?
The absolute maximum voltage between RH and RL terminals of the X9317WM8T1 is ±6 V, as specified in the Absolute Maximum Ratings table. However, for reliable operation within datasheet performance limits, the voltage across RH–RL must remain within the VCC supply range (2.7 V to 5.5 V). Exceeding VCC risks violating the VRH/RL specification (0 V to VCC), potentially causing excessive current through internal switches or resistor elements.
Can the X9317WM8T1 be used in a two-terminal variable resistor configuration?
Yes, the X9317WM8T1 supports two-terminal operation by connecting either RH or RL to RW and using the remaining fixed terminal with RW as the variable resistance element. In this mode, resistance varies from near-zero (wiper at connected terminal) to RTOTAL (wiper at opposite terminal). Designers must account for wiper resistance (200 Ω typical) and ensure current stays within ±4.4 mA limits to avoid exceeding power rating or degrading linearity.
How does the X9317WM8T1 handle wiper movement during rapid INC toggling?
The X9317WM8T1 uses a synchronous up/down counter architecture where each negative edge on INC advances or retreats the wiper by one tap, based on the U/D input state. Rapid toggling is supported with a minimum INC cycle time of 2 µs. During multi-step movement, the device employs make-before-break switching - briefly connecting adjacent taps - preventing open-circuit transients but temporarily lowering effective resistance if multiple taps are bridged during transition.
X9317WM8T1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- XDCP™
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- 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
X9317WM8T1 FAQ
1.How can I place an order for X9317WM8T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for X9317WM8T1 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 X9317WM8T1 reliable?
The price and inventory of X9317WM8T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X9317WM8T1 is usually 5 days.
3.What payment methods are accepted for X9317WM8T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9317WM8T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9317WM8T1?
X9317WM8T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9317WM8T1 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 X9317WM8T1?
For technical support, including X9317WM8T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9317WM8T1 requirements.
6.How does Aetrix verify that X9317WM8T1 is sourced from the original manufacturer or authorized distributors?
All X9317WM8T1 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 X9317WM8T1 meets industry standards.
7.What is the process for return or replacement of X9317WM8T1?
All X9317WM8T1 units undergo pre-shipment inspection (PSI). If there is an issue with X9317WM8T1, 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 X9317WM8T1 part is unused and in its original packaging.
Return procedure for X9317WM8T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
X9317WM8T1 Tags
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