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Renesas X9317WV8T2
- Part No.:
- X9317WV8T2
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
X9317WV8T2.pdf
- Description:
- IC DGTL POT 10KOHM 100TAP 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,534
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Product details
Overview
X9317WV8T2 from Renesas Electronics is a digitally controlled potentiometer (XDCP™) implementing a 99-element resistor array with 100 discrete 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 X9317WV8T2 datasheet, X9317WV8T2 pinout, X9317WV8T2 application, or X9317WV8T2 equivalent, key selection considerations include its 8-lead TSSOP package, -40°C to +85°C industrial temperature range, 200Ω typical wiper resistance, 5µA standby current, and ratiometric temperature coefficient of ±20 ppm/°C.
Technical Context
The X9317WV8T2 integrates a 7-bit up/down counter, decoder, and nonvolatile memory to control wiper position across 100 taps. Its "make-before-break" switching ensures continuity during wiper transitions, while the resistor array provides temperature-compensated tracking between RH, RW, and RL terminals.
Control logic responds to CS (active-low chip select), U/D (direction), and edge-triggered INC inputs. A HIGH-to-LOW transition on INC moves the wiper; storing the position requires CS rising while INC is HIGH - initiating a 5–10 ms nonvolatile write cycle with 100,000-cycle endurance and 100-year data retention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| End-to-end resistance | 10 kΩ ±20% - defines full-scale analog adjustment range and power dissipation limit (10 mW max) |
| Wiper resistance | 200 Ω typical at VCC = 5V - contributes directly to output impedance and voltage error in divider mode |
| Supply voltage range | 2.7 V to 5.5 V - enables direct compatibility with 3.3V and 5V logic/system rails without level shifting |
| Standby current | <5 µA - supports ultra-low-power operation in battery-backed or energy-sensitive systems |
| Ratiometric tempco | ±20 ppm/°C - ensures stable voltage division ratio over temperature, critical for bias and offset trimming |
| Resolution | 1% (1/99 step) - corresponds to minimum incremental change in output voltage relative to RH–RL span |
| Wiper settling time | 5 µs after power-up - guarantees fast analog configuration readiness following system reset or wake-up |
Pinout & Package
Package: 8-lead TSSOP (RoHS-compliant, JEDEC MO-153 AC, M8.173 drawing), 4.4 mm × 3.0 mm body, 0.65 mm lead pitch, -40°C to +85°C operating range.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (INC) | Increment clock input | Negative-edge triggered; toggling moves wiper up/down per U/D state; controls timing-critical wiper update (tCYC = 2 µs min) |
| 2 (U/D) | Direction control | Logic level sets wiper movement direction during each INC edge; may be changed dynamically while CS is low |
| 3 (RH) | High terminal | Fixed end of resistor array; connected to highest potential in voltage divider; not necessarily tied to VCC |
| 4 (VSS) | Ground reference | Analog and digital ground return; must be low-impedance to minimize noise coupling into resistor array |
| 5 (RW) | Wiper output | Movable terminal; series resistance ≤400 Ω at 2.7V ensures minimal loading in high-impedance feedback paths |
| 6 (RL) | Low terminal | Fixed end of resistor array; connected to lowest potential in voltage divider; not necessarily tied to VSS |
| 7 (CS) | Chip select | Active-low enable; rising edge with INC HIGH initiates nonvolatile store; deassertion places device in standby (<5 µA) |
| 8 (VCC) | Power supply | 2.7–5.5 V analog/digital rail; internal regulation not required; decoupling capacitor recommended near pin |
Key Features
| Feature | Design Value |
|---|---|
| Nonvolatile wiper storage | Retains last-set position across power cycles; eliminates need for external EEPROM or initialization firmware |
| 3-wire serial interface | Requires only CS, U/D, and INC signals - no clock line or address decoding; simplifies MCU GPIO usage |
| Temperature-compensated array | ±20 ppm/°C ratiometric tempco ensures stable voltage division ratio across -40°C to +85°C |
| Make-before-break switching | Prevents open-circuit transients during wiper movement; avoids signal dropout in active feedback loops |
| Low-power CMOS design | 5 µA standby current and 80 µA active current enable use in always-on sensor bias or regulator trim circuits |
Applications
| LCD Bias Control | Laser Diode Bias Control |
|---|---|
Use Scenario: Adjusting VCOM or gamma reference voltages in TFT-LCD panels to maintain grayscale accuracy and contrast uniformity across temperature. IC Role / Device Role / Timing Role: Three-terminal potentiometer configured as voltage divider, setting precise DC bias points for source driver ICs. Use Value: 100-tap resolution and ±20 ppm/°C ratiometric stability ensure consistent pixel response without recalibration over operating temperature. |
Use Scenario: Setting precise bias current for laser diodes in optical transceivers or fiber sensing modules where output power must remain stable under thermal drift. IC Role / Device Role / Timing Role: Two-terminal variable resistor in series with laser diode cathode, controlling forward current via adjustable IR drop. Use Value: Nonvolatile storage retains factory-calibrated bias point; low wiper resistance (200 Ω typ.) minimizes insertion loss in current-sense path. |
| Voltage Regulator Output Trim | DC Offset Adjustment |
Use Scenario: Fine-tuning output voltage of adjustable LDOs or DC-DC converters in programmable power supplies or FPGA core rails. IC Role / Device Role / Timing Role: Resistor network element in feedback divider (e.g., replacing R2 in standard ADJ pin configuration). Use Value: 10 kΩ end-to-end resistance matches typical regulator feedback impedance targets; ±20% tolerance accommodates calibration margin. |
Use Scenario: Nulling input offset voltage in precision op-amp circuits used for strain gauge amplification or thermocouple conditioning. IC Role / Device Role / Timing Role: Two-terminal variable resistor in op-amp offset null network (e.g., across pins 1–5 of LM358), adjusting differential input imbalance. Use Value: Low noise (-120 dBV ref 1 kHz) prevents injection of audible or measurement-band interference into sensitive analog front-ends. |
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 | I²C interface, 256-tap resolution, 10 kΩ nominal, 2.7–5.5 V supply, but no nonvolatile storage - wiper resets to mid-scale on power-up | Requires host MCU to reinitialize wiper position at boot; unsuitable for unattended or fail-safe bias retention | Select when I²C bus availability and higher resolution outweigh need for autonomous power-cycle recovery |
| MCP41010-I/P | SPITM interface, 256-tap resolution, 10 kΩ nominal, 2.7–5.5 V supply, volatile wiper register only - no EEPROM | Needs continuous MCU supervision; cannot retain trim settings without external memory or firmware restore logic | Choose for cost-sensitive designs where external controller manages all calibration state and layout space favors DIP-8 |
Compared with AD5170BRMZ-10 and MCP41010-I/P, the X9317WV8T2 uniquely combines 100-tap precision, nonvolatile storage, and 3-wire simplicity - enabling self-contained analog trimming without host intervention or external memory overhead.
Availability
X9317WV8T2 is available at Aetrix Electronics and suitable for LCD bias control, laser diode bias adjustment, and voltage regulator output trimming requiring stable component supply, long-term calibration integrity, and industrial temperature resilience.
Supply support for X9317WV8T2 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 SoC solutions for automotive, industrial, and infrastructure markets.
The X9317WV8T2 belongs to Renesas' XDCP™ (eXternally Digitally Controlled Potentiometer) family, engineered specifically for high-reliability analog trimming in systems where mechanical potentiometers fail due to wear, vibration, or environmental stress.
FAQ
What is the operating temperature range for the X9317WV8T2?
The X9317WV8T2 is rated for -40°C to +85°C, matching the industrial temperature grade specified in the ordering information for the "WV8IZ" suffix variant. This range is validated across all electrical parameters including end-to-end resistance tolerance, wiper resistance, and ratiometric temperature coefficient, ensuring reliable analog performance in demanding environments such as industrial automation and outdoor communications equipment.
Does the X9317WV8T2 require an external clock or additional control lines beyond CS, U/D, and INC?
No, the X9317WV8T2 uses a self-timed 3-wire up/down interface with no external clock required. The INC input is negative-edge triggered, and wiper movement occurs synchronously with each valid edge while CS is low. U/D sets direction, and CS rising with INC HIGH initiates nonvolatile store - eliminating need for SPI/I²C peripherals or clock routing in resource-constrained designs.
How does the X9317WV8T2 handle power-up and retain its wiper position?
On power-up, the X9317WV8T2 automatically recalls the last stored wiper position from nonvolatile memory within 5 µs after VCC stabilizes. This behavior is guaranteed by design - no initialization sequence or host command is needed. The device remains in standby until CS is asserted, preserving the recalled setting until actively adjusted via the 3-wire interface.
Can the X9317WV8T2 be used in a two-terminal variable resistor configuration?
Yes, the X9317WV8T2 supports two-terminal operation by connecting either RH or RL to RW (wiper), leaving the unused terminal open or grounded depending on circuit topology. In this mode, it functions as a digitally adjustable rheostat with 100 discrete resistance steps between 0 Ω and RTOTAL (10 kΩ), maintaining the same 200 Ω typical wiper resistance and ±20 ppm/°C ratiometric stability.
What is the maximum wiper current rating for the X9317WV8T2?
The X9317WV8T2 specifies a maximum wiper current (IW) of ±4.4 mA under all operating conditions. This limit applies regardless of wiper position and is defined across the full temperature range. Exceeding this value risks accelerated wear of internal switches or deviation from specified wiper resistance and linearity, particularly at extreme tap positions where current density is highest.
X9317WV8T2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- XDCP™
- Package/Case:
- 8-TSSOP (0.173", 4.40mm 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-TSSOP
- Operating Temperature:
- 0°C ~ 70°C
- Resistance - Wiper (Ohms) (Typ):
- 200
X9317WV8T2 FAQ
1.How can I place an order for X9317WV8T2 through Aetrix?
Please submit a Request for Quotation (RFQ) for X9317WV8T2 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 X9317WV8T2 reliable?
The price and inventory of X9317WV8T2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X9317WV8T2 is usually 5 days.
3.What payment methods are accepted for X9317WV8T2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9317WV8T2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9317WV8T2?
X9317WV8T2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9317WV8T2 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 X9317WV8T2?
For technical support, including X9317WV8T2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9317WV8T2 requirements.
6.How does Aetrix verify that X9317WV8T2 is sourced from the original manufacturer or authorized distributors?
All X9317WV8T2 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 X9317WV8T2 meets industry standards.
7.What is the process for return or replacement of X9317WV8T2?
All X9317WV8T2 units undergo pre-shipment inspection (PSI). If there is an issue with X9317WV8T2, 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 X9317WV8T2 part is unused and in its original packaging.
Return procedure for X9317WV8T2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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