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Renesas X9317UV8I-2.7T2
- Part No.:
- X9317UV8I-2.7T2
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
X9317UV8I-2.7T2.pdf
- Description:
- IC DGTL POT 50KOHM 100TAP 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,080
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Product details
Overview
X9317UV8I-2.7T2 from Renesas Electronics is a digitally controlled potentiometer (XDCP™) with 100 wiper tap points, nonvolatile wiper position storage, and 3-wire up/down serial interface. It features 50 kΩ end-to-end resistance, operates from 2.7 V to 5.5 V, and delivers ±0.2 MI relative linearity for precision DC bias adjustment in analog signal chains.
For engineers reviewing the X9317UV8I-2.7T2 datasheet, X9317UV8I-2.7T2 pinout, X9317UV8I-2.7T2 application, or X9317UV8I-2.7T2 equivalent, this device serves as a solid-state replacement for mechanical potentiometers in voltage divider, gain trim, and laser diode bias control circuits where power-up repeatability and low standby current (<5 µA) are critical.
Technical Context
The X9317UV8I-2.7T2 implements a 99-element resistor array with make-before-break wiper switching, enabling glitch-free tap transitions. Its 7-bit counter drives a decoder that selects one of 100 discrete wiper positions, with position stored in nonvolatile memory upon CS↑/INC↑ edge.
It uses CMOS logic with VIH = 0.7×VCC and VIL = 0.1×VCC, supports full-rail RH/RL terminal voltages (0 V to VCC), and maintains ratiometric temperature coefficient of ±20 ppm/°C - critical for stable voltage division across industrial temperature range (–40 °C to +85 °C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| End-to-end Resistance | 50 kΩ ±20% - defines maximum current limiting and voltage division ratio accuracy in three-terminal configurations. |
| Supply Voltage Range | 2.7 V to 5.5 V - enables direct compatibility with 3.3 V and 5 V systems without level-shifting. |
| Relative Linearity | ±0.2 MI - ensures ≤0.2% step-size error between adjacent taps, essential for monotonic gain control. |
| Wiper Resistance | 400 Ω (max at 2.7 V) - contributes directly to output impedance in variable-resistor mode; impacts settling time in high-Z feedback paths. |
| Standby Current | <5 µA - allows battery-powered trimming circuits to retain configuration with negligible quiescent drain. |
| Nonvolatile Endurance | 100,000 data changes per bit - supports field calibration cycles over product lifetime without wear-out risk. |
| Temperature Range | –40 °C to +85 °C - qualified for industrial-grade embedded systems including motor controls and sensor front-ends. |
Pinout & Package
Package: 8-lead TSSOP (RoHS-compliant, JEDEC MO-153 AC, M8.173 drawing), 4.4 mm × 3.0 mm footprint, 1.2 mm max height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (INC) | Increment clock input | Negative-edge-triggered control line; toggling moves wiper up/down based on U/D state - requires tIL/tIH ≥960 ns pulse width. |
| 2 (U/D) | Direction control input | Static logic level defining wiper movement direction during INC transition; 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 VCC - defines upper rail of adjustable ratio. |
| 4 (VSS) | Ground reference | Primary return path for internal logic and resistor array; must be low-impedance to minimize noise coupling into RW. |
| 5 (RW) | Wiper output | Movable terminal with 200–400 Ω series resistance; settles within 5 µs post-power-up; exhibits 25 pF capacitance to ground affecting high-frequency response. |
| 6 (RL) | Low terminal | Fixed end of resistor array; connected to lowest potential (e.g., ground or negative rail); establishes lower bound of adjustable voltage range. |
| 7 (CS) | Chip select | Active-low enable; initiates wiper update when low; triggers nonvolatile store on rising edge if INC is high - no external pull-up required. |
| 8 (VCC) | Power supply | 2.7–5.5 V CMOS supply; powers logic and array; ICC1 ≤80 µA during active increment; ramp rate must be 0.2–50 V/ms to avoid spurious writes. |
Key Features
| Feature | Design Value |
|---|---|
| Nonvolatile wiper storage | Retains last programmed tap position across power cycles - eliminates need for host MCU initialization at boot. |
| 3-wire serial interface | Requires only CS, U/D, and INC signals - avoids SPI/I²C overhead and reduces GPIO count in space-constrained designs. |
| Temperature-compensated array | ±300 ppm/°C absolute RTOTAL drift and ±20 ppm/°C ratiometric drift - preserves voltage division accuracy across –40 °C to +85 °C. |
| Make-before-break switching | Prevents open-circuit transients during wiper movement - critical for stability in op-amp feedback networks and regulator loops. |
| Low-noise operation | –120 dBV noise floor (1 kHz reference) - suitable for audio biasing and precision sensor signal conditioning without added ripple. |
Applications
| LCD Bias Control | Laser Diode Bias Control |
|---|---|
|
Use Scenario: Adjusting VCOM voltage in TFT-LCD column drivers to minimize image flicker and ghosting. IC Role / Device Role / Timing Role: Three-terminal potentiometer setting reference voltage for gamma correction DACs. Use Value: 100-tap resolution enables fine-grained grayscale calibration; nonvolatile recall ensures consistent display startup after power loss. |
Use Scenario: Setting precise bias current for edge-emitting laser diodes in fiber-optic transceivers. IC Role / Device Role / Timing Role: Two-terminal variable resistor in constant-current source feedback path. Use Value: ±0.2 MI linearity prevents optical power overshoot; 50 kΩ value matches typical transimpedance amplifier gain ranges. |
| Voltage Regulator Output Trim | DC Offset Adjustment |
|
Use Scenario: Fine-tuning output voltage of adjustable LDOs (e.g., LT3080, LM317) in test equipment power supplies. IC Role / Device Role / Timing Role: Three-terminal potentiometer replacing mechanical trimmer in ADJ pin feedback network. Use Value: 2.7 V minimum VCC allows direct use with 3.3 V system rails; <5 µA standby current avoids loading regulation loop. |
Use Scenario: Nulling input offset voltage in instrumentation amplifiers used for strain gauge or thermocouple signal conditioning. IC Role / Device Role / Timing Role: Two-terminal variable resistor in op-amp offset null circuit (e.g., pin 1–5 of LM324). Use Value: 50 kΩ RTOTAL matches standard offset null network impedances; ±20% tolerance accommodates calibration margin. |
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 resolution, 50 kΩ, ±30% RTOTAL tolerance. | Requires I²C bus resources and firmware support; better resolution but looser resistance tolerance affects absolute voltage accuracy. | Select when multi-channel trimming or microcontroller-based calibration is preferred over minimal GPIO control. |
| MCP41050-I/P | SPIM interface, single-channel, 257-tap resolution, 50 kΩ, ±20% RTOTAL, volatile wiper register only. | No nonvolatile storage - wiper resets to mid-scale on power-up; requires host MCU reinitialization for repeatable startup. | Select when cost sensitivity outweighs power-loss retention requirement and SPI is already available in design. |
Compared with AD5243BRMZ50 and MCP41050-I/P, the X9317UV8I-2.7T2 uniquely combines 3-wire simplicity, guaranteed power-up repeatability via nonvolatile memory, and industrial temperature qualification - making it optimal for standalone analog trimming where reliability and minimal firmware dependency are prioritized.
Availability
X9317UV8I-2.7T2 is available at Aetrix Electronics and suitable for LCD bias control, laser diode bias control, and voltage regulator output trim requiring stable component supply across industrial temperature environments.
Supply support for X9317UV8I-2.7T2 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 X9317 family was designed specifically for analog system calibration - replacing mechanical potentiometers with robust, programmable, and repeatable digital alternatives in DC-coupled signal conditioning and power management circuits.
FAQ
What is the operating voltage range for the X9317UV8I-2.7T2?
The X9317UV8I-2.7T2 operates from 2.7 V to 5.5 V, supporting both 3.3 V and 5 V logic systems without external regulators. This range is explicitly defined in the Absolute Maximum Ratings and Potentiometer Specifications sections of the FN8183 datasheet, and applies across its full industrial temperature range (–40 °C to +85 °C). The "-2.7" suffix denotes this extended low-voltage capability.
Does the X9317UV8I-2.7T2 retain its wiper position after power cycling?
Yes, the X9317UV8I-2.7T2 stores the wiper position in nonvolatile memory and automatically recalls it on power-up. This behavior is confirmed in the device overview, block diagram, and Principles of Operation sections of the datasheet. A store operation is triggered by raising CS while INC is held high, and the recalled value is loaded into the wiper counter within 5 µs after VCC stabilizes.
What package type is used for the X9317UV8I-2.7T2?
The X9317UV8I-2.7T2 uses an 8-lead TSSOP package (JEDEC MO-153 AC compliant, drawing number M8.173), measuring 4.4 mm × 3.0 mm with 0.65 mm lead pitch. This is verified in the Ordering Information table on page 2 and the Pin Configurations section on page 3 of FN8183 Rev.10.01, where "UV8" explicitly denotes TSSOP packaging.
How many wiper tap positions does the X9317UV8I-2.7T2 support?
The X9317UV8I-2.7T2 provides exactly 100 discrete wiper tap positions, corresponding to a 99-element resistor array with endpoints. This is stated in the title, overview, and Features sections of the datasheet, and confirmed by the 7-bit counter architecture (2⁷ = 128 states, but only 100 are decoded for wiper selection).
What is the end-to-end resistance value of the X9317UV8I-2.7T2?
The X9317UV8I-2.7T2 has a nominal end-to-end resistance (RTOTAL) of 50 kΩ with a tolerance of ±20%, as specified in the Ordering Information table (page 2) and Potentiometer Specifications table (page 4) of FN8183 Rev.10.01. This value is fixed per device variant and is independent of the -2.7 voltage rating suffix.
X9317UV8I-2.7T2 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:
- 2.7V ~ 5.5V
- 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):
- 400
X9317UV8I-2.7T2 FAQ
1.How can I place an order for X9317UV8I-2.7T2 through Aetrix?
Please submit a Request for Quotation (RFQ) for X9317UV8I-2.7T2 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 X9317UV8I-2.7T2 reliable?
The price and inventory of X9317UV8I-2.7T2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X9317UV8I-2.7T2 is usually 5 days.
3.What payment methods are accepted for X9317UV8I-2.7T2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9317UV8I-2.7T2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9317UV8I-2.7T2?
X9317UV8I-2.7T2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9317UV8I-2.7T2 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 X9317UV8I-2.7T2?
For technical support, including X9317UV8I-2.7T2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9317UV8I-2.7T2 requirements.
6.How does Aetrix verify that X9317UV8I-2.7T2 is sourced from the original manufacturer or authorized distributors?
All X9317UV8I-2.7T2 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 X9317UV8I-2.7T2 meets industry standards.
7.What is the process for return or replacement of X9317UV8I-2.7T2?
All X9317UV8I-2.7T2 units undergo pre-shipment inspection (PSI). If there is an issue with X9317UV8I-2.7T2, 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 X9317UV8I-2.7T2 part is unused and in its original packaging.
Return procedure for X9317UV8I-2.7T2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
X9317UV8I-2.7T2 Tags
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