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Renesas X9317UV8IT1
- Part No.:
- X9317UV8IT1
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
X9317UV8IT1.pdf
- Description:
- IC DGTL POT 50KOHM 100TAP 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,246
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Product details
Overview
X9317UV8IT1 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 as a three-terminal voltage divider or two-terminal variable resistor for precision analog trimming in DC bias, gain/offset, and laser diode control circuits.
For engineers reviewing the X9317UV8IT1 datasheet, X9317UV8IT1 pinout, X9317UV8IT1 application, or X9317UV8IT1 equivalent, this device supports stable analog tuning across -40°C to +85°C with ±20% end-to-end resistance tolerance, <5 µA standby current, and 100-year data retention-critical for industrial power management and embedded sensor calibration.
Technical Context
The X9317UV8IT1 integrates a 7-bit up/down counter, decoder logic, and nonvolatile memory to control wiper position across 100 taps. Its solid-state 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 drift.
Control is executed via CS (chip select), U/D (direction), and edge-triggered INC inputs. Wiper movement follows make-before-break switching, and nonvolatile store occurs on CS↑ with INC high-enabling deterministic power-up behavior without external configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| End-to-end Resistance | 50 kΩ ±20% - defines full-scale analog range for voltage divider or current-limiting applications |
| Wiper Tap Count | 100 positions - enables 1% resolution per step for fine-grained analog adjustment |
| Supply Voltage Range | 2.7 V to 5.5 V - supports single-supply operation across legacy 3.3 V and modern 5 V systems |
| Standby Current | <5 µA - minimizes quiescent power in battery-backed or always-on calibration circuits |
| Nonvolatile Retention | 100 years - guarantees wiper position persistence across product lifetime without refresh |
| Wiper Resistance | 200 Ω typical at 5 V - limits signal path error and loading in high-impedance feedback networks |
| Operating Temperature | -40°C to +85°C - qualified for industrial-grade embedded systems and automotive cabin electronics |
| Interface Protocol | 3-wire up/down serial - eliminates need for clock or address lines, reducing MCU GPIO count and PCB routing complexity |
Pinout & Package
Package: 8-lead TSSOP (RoHS-compliant, JEDEC MO-153 AC, M8.173 drawing). Dimensions: 4.40 mm × 3.0 mm × 1.20 mm max height. Lead pitch: 0.65 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (INC) | Increment clock input | Negative-edge triggered; toggling moves wiper up/down based on U/D state-no external debouncing required |
| 2 (VCC) | Positive supply | Accepts 2.7–5.5 V; powers internal logic, memory, and resistor array-supports wide-input LDO or battery rails |
| 3 (U/D) | Direction control | Static logic level sets wiper movement direction during INC transitions-enables bidirectional trim without reinitialization |
| 4 (VSS) | Ground reference | Common return for all analog and digital circuitry; must be low-impedance to minimize noise coupling into RH/RW/RL |
| 5 (RH) | High terminal | Fixed end of resistor array; connects to higher potential node in voltage divider configurations |
| 6 (RW) | Wiper output | Movable tap point; delivers interpolated voltage between RH and RL-series resistance ≤400 Ω at 2.7 V ensures minimal gain error |
| 7 (RL) | Low terminal | Fixed end of resistor array; connects to lower potential node (e.g., ground or negative rail) in 3-terminal use |
| 8 (CS) | Chip select | Active-low enable; initiates wiper update when low, triggers nonvolatile store on rising edge with INC high |
Key Features
| Feature | Design Value |
|---|---|
| Solid-state construction | Eliminates mechanical wear, contact bounce, and environmental sensitivity-ideal for sealed or high-vibration enclosures |
| Nonvolatile wiper storage | Recalls last-trimmed position at power-up without host intervention-enables "set-and-forget" calibration in field-deployed equipment |
| Temperature-compensated array | ±300 ppm/°C absolute TC and ±20 ppm/°C ratiometric TC maintain voltage division accuracy across industrial temperature range |
| Low-power CMOS design | 80 µA active current and <5 µA standby draw support energy-constrained designs including portable test instruments and IoT sensors |
| Make-before-break switching | Prevents open-circuit transients during wiper movement-critical for stability in op-amp feedback loops and regulator setpoints |
| Pb-free RoHS compliance | Meets IPC/JEDEC J-STD-020 reflow profiles for lead-free assembly-compatible with standard SMT production lines |
Applications
| LCD Bias Control | Laser Diode Bias Control |
|---|---|
Use Scenario: Adjusting VCOM or gamma voltage in TFT-LCD panels to compensate for panel aging and temperature drift. IC Role / Device Role / Timing Role: Three-terminal potentiometer providing precise, stable DC bias voltage referenced to display ground. Use Value: 100-tap resolution and nonvolatile recall ensure consistent grayscale uniformity across panel lifetime without recalibration. |
Use Scenario: Setting bias current for edge-emitting laser diodes in fiber-optic transceivers and optical sensing modules. IC Role / Device Role / Timing Role: Two-terminal variable resistor in series with laser anode to regulate forward current with high long-term stability. Use Value: ±20% RTOTAL tolerance and ±300 ppm/°C TC prevent optical power drift over temperature-meeting Class I laser safety margins. |
| Voltage Regulator Output Control | Gain and Offset Trim |
Use Scenario: Fine-tuning output voltage of adjustable linear regulators (e.g., LM317) or DC-DC controllers in programmable power supplies. IC Role / Device Role / Timing Role: Three-terminal potentiometer replacing mechanical trimmer in feedback divider network. Use Value: Nonvolatile storage preserves user-set voltage after power cycle-enabling repeatable benchtop or factory-programmed outputs. |
Use Scenario: Calibrating offset and gain in instrumentation amplifiers, ADC front-ends, and sensor signal chains. IC Role / Device Role / Timing Role: Two-terminal variable resistor in op-amp gain-setting or offset-nulling paths. Use Value: Low wiper resistance (200 Ω typ.) and high linearity (±0.2% relative) minimize gain error and thermal EMF-induced drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digitally controlled potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5243BRMZ50 | I²C interface, dual-channel, 256-tap, 50 kΩ, ±30% tolerance, 2.7–5.5 V | Requires I²C master and supports dual independent pots-better for multi-parameter calibration but adds protocol overhead | Select for systems needing simultaneous gain/offset adjustment or where I²C bus is already available |
| MCP41050-I/P | SPISerial interface, single-channel, 257-tap, 50 kΩ, ±20% tolerance, 2.7–5.5 V | Uses SPI clock/data lines instead of up/down-higher pin count but faster update rate (≤1 µs wiper settle) | Select when rapid dynamic adjustment is required or when SPI peripherals are underutilized |
Compared with AD5243BRMZ50 and MCP41050-I/P, the X9317UV8IT1 offers lowest system-level pin count (3 GPIOs), deterministic power-up behavior, and superior long-term stability due to its ratiometric TC specification-making it optimal for cost-sensitive, single-parameter industrial trims.
Availability
X9317UV8IT1 is available at Aetrix Electronics and suitable for LCD bias control, laser diode bias control, and voltage regulator output control requiring stable component supply across industrial temperature ranges and long product lifecycles.
Supply support for X9317UV8IT1 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 Corporation is a global semiconductor leader delivering microcontrollers, analog power, and SoC solutions for automotive, industrial, and infrastructure markets.
The X9317UV8IT1 belongs to Renesas' XDCP™ (Digitally Controlled Potentiometer) family, designed specifically for replacing mechanical trimmers in high-reliability analog tuning applications where nonvolatility, temperature stability, and low power are critical.
FAQ
What is the exact end-to-end resistance value and tolerance for X9317UV8IT1?
The X9317UV8IT1 has a nominal end-to-end resistance (RTOTAL) of 50 kΩ with a tolerance of ±20%, as specified in the Ordering Information table on page 2 of the FN8183 datasheet. This value is confirmed for all X9317UV8x variants and applies across the full operating temperature range of -40°C to +85°C.
Does X9317UV8IT1 retain its wiper position after power cycling?
Yes, the X9317UV8IT1 stores the wiper position in nonvolatile memory and automatically recalls it upon power-up. This behavior is guaranteed by its EEPROM-based storage architecture, which provides 100-year data retention and 100,000 write cycles-ensuring reliable operation across the product's entire service life without external backup components.
What package type and footprint does X9317UV8IT1 use?
X9317UV8IT1 uses an 8-lead TSSOP package conforming to JEDEC MO-153 variation AC and Renesas package drawing M8.173. Its dimensions are 4.40 mm × 3.0 mm × 1.20 mm max height, with 0.65 mm lead pitch and gull-wing leads-compatible with standard SMT reflow profiles including Pb-free J-STD-020.
How does the 3-wire interface of X9317UV8IT1 differ from I²C or SPI protocols?
The X9317UV8IT1 uses a dedicated 3-wire up/down interface (CS, U/D, INC) with no clock or data lines-unlike I²C or SPI. INC is edge-triggered, U/D sets direction statically, and CS enables updates or initiates nonvolatile store. This reduces MCU GPIO usage and eliminates protocol stack overhead, making it ideal for resource-constrained microcontrollers.
Can X9317UV8IT1 operate from a 3.3 V supply?
Yes, X9317UV8IT1 supports a supply voltage range of 2.7 V to 5.5 V, fully covering standard 3.3 V systems. Its DC electrical specifications-including ICC1 (80 µA max active current), ISB (<5 µA standby), and VIH/VIL thresholds-are validated across this range, ensuring robust operation with common 3.3 V LDOs and logic families.
X9317UV8IT1 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):
- 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-TSSOP
- Operating Temperature:
- -40°C ~ 85°C
- Resistance - Wiper (Ohms) (Typ):
- 200
X9317UV8IT1 FAQ
1.How can I place an order for X9317UV8IT1 through Aetrix?
Please submit a Request for Quotation (RFQ) for X9317UV8IT1 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 X9317UV8IT1 reliable?
The price and inventory of X9317UV8IT1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X9317UV8IT1 is usually 5 days.
3.What payment methods are accepted for X9317UV8IT1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9317UV8IT1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9317UV8IT1?
X9317UV8IT1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9317UV8IT1 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 X9317UV8IT1?
For technical support, including X9317UV8IT1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9317UV8IT1 requirements.
6.How does Aetrix verify that X9317UV8IT1 is sourced from the original manufacturer or authorized distributors?
All X9317UV8IT1 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 X9317UV8IT1 meets industry standards.
7.What is the process for return or replacement of X9317UV8IT1?
All X9317UV8IT1 units undergo pre-shipment inspection (PSI). If there is an issue with X9317UV8IT1, 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 X9317UV8IT1 part is unused and in its original packaging.
Return procedure for X9317UV8IT1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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