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Renesas X9317US8Z
- Part No.:
- X9317US8Z
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
X9317US8Z.pdf
- Description:
- IC DGTL POT 50KOHM 100TAP 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:100
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Product details
Overview
X9317US8Z 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 50kΩ end-to-end resistance with ±20% tolerance, and supports voltage divider or variable resistor configurations in precision analog trimming applications.
For engineers reviewing the X9317US8Z datasheet, X9317US8Z pinout, X9317US8Z application, or X9317US8Z equivalent, this device serves as a solid-state replacement for mechanical potentiometers in DC bias adjustment, laser diode bias control, gain/offset trim, and voltage regulator output tuning-requiring stable wiper position retention across power cycles and low standby current (<5µA).
Technical Context
The X9317US8Z 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 elements with ±300 ppm/°C total resistance TC and ±20 ppm/°C ratiometric TC, ensuring stable voltage division under thermal variation.
Wiper movement follows make-before-break switching, enabling glitch-free transitions; wiper resistance is 200Ω (typ) at 5V and up to 1000Ω at 2.7V. The device enters standby mode when CS is high, drawing ≤5µA, and stores wiper position on CS↑ with INC high-requiring no external EEPROM or MCU intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| End-to-end Resistance | 50kΩ ±20% - defines full-scale analog range for voltage division or current limiting |
| Supply Voltage Range | 2.7V to 5.5V - enables operation from single Li-ion or standard 3.3V/5V rails without level shifting |
| Wiper Tap Count | 100 positions - provides 1% resolution per step for fine-grained analog calibration |
| Standby Current | <5µA - minimizes system power budget during idle or sleep modes |
| Nonvolatile Storage | 100-year data retention, 100,000 write cycles - eliminates need for battery-backed RAM or external NVM |
| Interface | 3-wire serial (CS/U/D/INC) - requires only three GPIOs, no clock or data lines beyond control signals |
| Temperature Range | 0°C to +70°C - qualified for commercial-grade embedded systems and industrial control panels |
Pinout & Package
Package: 8-lead SOIC (M8.15E), RoHS-compliant, narrow-body plastic package with 1.27mm lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (INC) | Increment clock input | Negative-edge-triggered control signal; toggling moves wiper one tap in U/D direction |
| 2 (U/D) | Direction control | 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 in voltage divider configuration |
| 4 (VSS) | Ground reference | System ground return for all internal circuitry and potentiometer terminals |
| 5 (RW) | Wiper output | Movable terminal; delivers intermediate voltage or adjustable resistance point; 200Ω typical series resistance |
| 6 (RL) | Low terminal | Fixed end of resistor array; connects to lower potential (e.g., ground) in voltage divider |
| 7 (CS) | Chip select | Active-low enable; initiates wiper control when low; triggers nonvolatile store on rising edge with INC high |
| 8 (VCC) | Power supply | 2.7V–5.5V supply input; powers logic, memory, and resistor array; decoupling required near pin |
Key Features
| Feature | Design Value |
|---|---|
| Nonvolatile wiper position storage | Eliminates startup recalibration; restores last-trimmed setting automatically after power cycle |
| Make-before-break wiper switching | Prevents open-circuit or short-circuit transients during tap changes, critical for stable feedback loops |
| Temperature-compensated resistor array | ±300 ppm/°C absolute TC and ±20 ppm/°C ratiometric TC ensure consistent voltage division across operating range |
| Low-power CMOS design | Active current ≤80µA and standby current <5µA reduce thermal load and extend battery life in portable systems |
| Three-terminal potentiometer or two-terminal rheostat mode | Supports both voltage divider (RH–RW–RL) and variable resistor (RW–RL or RW–RH) topologies without external components |
Applications
| LCD Bias Control | DC Bias Adjustment |
|---|---|
Use Scenario: Setting precise VCOM or gamma reference voltages in TFT-LCD driver circuits. IC Role / Device Role / Timing Role: Three-terminal potentiometer providing stable, digitally adjustable DC bias voltage. Use Value: Maintains factory-calibrated gamma curve across panel lifetime using nonvolatile wiper recall at power-up. | Use Scenario: Calibrating input offset of op-amps or sensor front-ends in instrumentation systems. IC Role / Device Role / Timing Role: Two-terminal variable resistor in feedback path to adjust DC operating point. Use Value: Enables field software calibration without hardware modification or manual potentiometer adjustment. |
| Laser Diode Bias Control | Voltage Regulator Output Control |
Use Scenario: Fine-tuning bias current for laser diodes in optical transceivers or fiber modules. IC Role / Device Role / Timing Role: Adjustable current-limiting element in constant-current source topology. Use Value: Compensates for laser aging and temperature drift via periodic digital trim, preserving optical output stability. | Use Scenario: Adjusting output voltage of adjustable LDOs or switching regulators in programmable power supplies. IC Role / Device Role / Timing Role: Feedback network resistor in voltage divider connected to regulator ADJ pin. Use Value: Allows dynamic output reconfiguration via MCU command, supporting multi-voltage rail systems with single regulator IC. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digitally controlled potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5175BRMZ-50 | 256-tap I²C interface, 50kΩ, ±8% RTOTAL tolerance, 10ppm/°C TC | Requires I²C bus and pull-up resistors; higher resolution but tighter TC spec | Preferred where I²C infrastructure exists and sub-1% linearity is required |
| MCP41050-I/P | 256-tap SPI interface, 50kΩ, ±20% RTOTAL, 500ppm/°C TC, no nonvolatile memory | Needs external MCU to reload wiper position on power-up; higher TC reduces thermal stability | Suitable for cost-sensitive designs where volatile operation is acceptable and SPI is preferred |
Compared with AD5175BRMZ-50 and MCP41050-I/P, the X9317US8Z offers guaranteed wiper recall without firmware initialization, simpler 3-wire control requiring no protocol stack, and superior ratiometric temperature stability-making it optimal for self-contained analog calibration in commercial-grade systems.
Availability
X9317US8Z is available at Aetrix Electronics and suitable for LCD bias control, laser diode bias tuning, voltage regulator output adjustment, and DC offset trimming requiring stable component supply and long-term calibration retention.
Supply support for X9317US8Z 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 automotive, industrial, and computing markets.
The X9317 product line delivers digitally controlled potentiometers optimized for precision analog trimming in commercial and industrial systems-designed to replace mechanical pots with enhanced reliability, programmability, and nonvolatile retention.
FAQ
What is the maximum wiper current rating for the X9317US8Z?
The X9317US8Z supports a maximum wiper current (IW) of ±4.4mA across the full operating temperature range. This limit applies regardless of supply voltage (2.7V–5.5V) and ensures safe operation when used as a variable resistor in current-sensing or bias-setting circuits. Exceeding this value risks irreversible damage to the internal wiper switches and resistor elements.
Does the X9317US8Z require an external clock or microcontroller to retain its wiper position?
No, the X9317US8Z does not require an external clock or microcontroller to retain its wiper position. The device includes integrated nonvolatile memory that automatically stores the current wiper setting upon a valid store command (CS rising edge with INC high). On subsequent power-up, the X9317US8Z recalls this stored value without any host intervention or firmware initialization.
Can the X9317US8Z be used in a two-terminal (rheostat) configuration?
Yes, the X9317US8Z can be configured as a two-terminal variable resistor by connecting either RH or RL to RW and using the remaining terminal with RW as the adjustable resistance node. This configuration is explicitly supported in the datasheet and commonly used for current-limiting or gain-setting applications where only one adjustable resistance path is needed.
What is the typical wiper resistance of the X9317US8Z at 2.7V supply?
The typical wiper resistance (RW) of the X9317US8Z is 400Ω at 2.7V supply, with a maximum of 1000Ω over temperature and process variation. This value is significantly higher than the 200Ω typical at 5V, reflecting increased on-resistance of the internal CMOS switches at lower VCC-designers must account for this in low-voltage precision applications.
Is the X9317US8Z pin-compatible with other members of the X9317 family?
Yes, the X9317US8Z is pin-compatible with all 8-lead SOIC variants of the X9317 family-including X9317WS8Z, X9317WS8IZ, and X9317US8IZ-sharing identical pinout, electrical interface, and functional behavior. Differences are limited to end-to-end resistance value (50kΩ vs. 10kΩ), supply voltage range (2.7V–5.5V vs. 4.5V–5.5V), and temperature grade (0°C–70°C vs. –40°C–85°C).
X9317US8Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- XDCP™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Taper:
- Linear
- Configuration:
- Potentiometer
- Number of Circuits:
- 1
- Number of Taps:
- 100
- Resistance (Ohms):
- 50k
- 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-SOIC
- Operating Temperature:
- 0°C ~ 70°C
- Resistance - Wiper (Ohms) (Typ):
- 200
X9317US8Z FAQ
1.How can I place an order for X9317US8Z through Aetrix?
Please submit a Request for Quotation (RFQ) for X9317US8Z 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 X9317US8Z reliable?
The price and inventory of X9317US8Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X9317US8Z is usually 5 days.
3.What payment methods are accepted for X9317US8Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9317US8Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9317US8Z?
X9317US8Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9317US8Z 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 X9317US8Z?
For technical support, including X9317US8Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9317US8Z requirements.
6.How does Aetrix verify that X9317US8Z is sourced from the original manufacturer or authorized distributors?
All X9317US8Z 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 X9317US8Z meets industry standards.
7.What is the process for return or replacement of X9317US8Z?
All X9317US8Z units undergo pre-shipment inspection (PSI). If there is an issue with X9317US8Z, 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 X9317US8Z part is unused and in its original packaging.
Return procedure for X9317US8Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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