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Renesas X9319WS8I
- Part No.:
- X9319WS8I
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
X9319WS8I.pdf
- Description:
- IC DGTL POT 10KOHM 100TAP 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,481
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Product details
Overview
X9319WS8I from Intersil is a digitally controlled potentiometer (XDCP™) implementing a 10 kΩ end-to-end resistance with 100 wiper tap points, nonvolatile wiper position storage, and 3-wire serial interface (CS/U/D/INC). It functions as a solid-state replacement for mechanical potentiometers in precision analog trimming applications including LCD bias control, laser diode bias, and voltage regulator output adjustment.
For engineers reviewing the X9319WS8I datasheet, X9319WS8I pinout, X9319WS8I application, or X9319WS8I equivalent, this page delivers verified technical context, real-world design meaning of specifications, validated pin roles, confirmed alternatives, and supply support for industrial embedded systems requiring stable, RoHS-compliant analog trim solutions.
Technical Context
The X9319WS8I integrates a 99-element resistor array with make-before-break wiper switching, a 7-bit up/down counter, and nonvolatile memory for power-up recall. Its control logic responds to negative-edge-triggered INC pulses while U/D sets direction and CS enables selection or initiates nonvolatile store on CS↑ with INC HIGH.
It operates at VCC = 5V ±10%, supports terminal voltages from 0 to +10V across RH/RL/RW, and maintains ratiometric temperature coefficient within ±20 ppm/°C. Wiper resistance is 40–200 Ω, and absolute linearity is ±1 MI over full scale.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RTOTAL | 10 kΩ ±20% - defines full-scale resistance range for voltage divider or current-limiting configurations |
| Wiper positions | 100 discrete taps (0–99) - enables 1% resolution for fine analog adjustment |
| VCC range | 4.5 V to 5.5 V - compatible with standard 5V logic and analog supply rails |
| Terminal voltage | 0 V to +10 V on RH/RL/RW - supports biasing of active devices like laser diodes and op-amps |
| Nonvolatile store | 100-year data retention, 100,000 write cycles - ensures factory calibration or user trim persists across power cycles |
| Power consumption | 3 mA active, 1 mA standby - suitable for low-power embedded systems with intermittent trim requirements |
| Linearity error | ±1 MI absolute, ±0.2 MI relative - guarantees predictable voltage division accuracy in feedback loops |
Pinout & Package
Package: 8-lead SOIC (150 mil), Pb-free (RoHS compliant), JEDEC MS-012 outline M8.15E.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 INC | Increment clock input | Negative-edge-triggered control signal; toggling moves wiper one step in U/D-defined direction |
| 2 U/D | Direction control | Logic level selects wiper movement direction (HIGH = up, LOW = down) during INC transitions |
| 3 RH | High terminal | Fixed end of resistor array; connects to higher potential node in voltage divider or current source |
| 4 VSS | Ground reference | System ground return for internal logic and resistor array; must be connected before VCC at power-up |
| 5 RW | Wiper terminal | Movable contact point; outputs intermediate voltage/current; series resistance 40–200 Ω affects loading |
| 6 RL | Low terminal | Fixed end of resistor array; connects to lower potential node (e.g., ground or negative rail) |
| 7 CS | Chip select | Active-low enable; CS↓ activates device; CS↑ with INC HIGH stores wiper position to NV memory |
| 8 VCC | Supply voltage | +5V ±10% digital/analog supply; ramp rate must be 0.2–50 V/ms to prevent spurious wiper shifts |
Key Features
| Feature | Design Value |
|---|---|
| Nonvolatile wiper storage | Retains last programmed tap position across power cycles without external backup power or EEPROM interface |
| Make-before-break wiper switching | Prevents open-circuit interruption during tap transitions-critical for stable feedback in regulator or amplifier loops |
| Temperature-compensated resistor array | ±300 ppm/°C RTOTAL drift and ±20 ppm/°C ratiometric coefficient ensure consistent divider ratio over -40°C to +85°C |
| Three-terminal potentiometer mode | Enables true voltage divider operation (RH–RW–RL) with programmable division ratio from 0% to 100% |
| Two-terminal variable resistor mode | Supports current-setting applications (e.g., laser diode bias) using RW–RL or RW–RH with fixed end grounded |
Applications
| LCD Bias Control | Laser Diode Bias Control |
|---|---|
Use Scenario: Adjusting VCOM or gamma voltage in TFT-LCD panels to maintain grayscale fidelity across temperature and aging. IC Role / Device Role / Timing Role: Three-terminal potentiometer providing precise, stable DC bias voltage referenced to panel common voltage. Use Value: Eliminates manual trim during manufacturing and enables field recalibration via microcontroller command-reducing test time and improving yield. | Use Scenario: Setting bias current for edge-emitting laser diodes in fiber-optic transceivers operating from 0°C to +85°C. IC Role / Device Role / Timing Role: Two-terminal variable resistor in series with laser cathode to regulate forward current with nonvolatile setpoint retention. Use Value: Maintains calibrated optical output power after power cycling; ±1 MI linearity prevents mode-hopping due to abrupt current steps. |
| Voltage Regulator Output Trim | Op-Amp Gain/Offset Adjustment |
Use Scenario: Fine-tuning output voltage of adjustable LDOs (e.g., LM317-based circuits) in industrial power supplies where load regulation and thermal drift matter. IC Role / Device Role / Timing Role: Three-terminal potentiometer replacing mechanical trimmer in feedback divider network of error amplifier. Use Value: Enables remote calibration and compensation for PCB trace resistance drift; 100-year NV memory preserves factory-set output tolerance. | Use Scenario: Calibrating gain and offset of instrumentation amplifiers in sensor signal chains (e.g., strain gauge bridges) prior to system deployment. IC Role / Device Role / Timing Role: Dual use: RW–RL as variable resistor for gain-setting feedback, RH–RW for offset injection into summing junction. Use Value: Achieves <±0.1% total error after calibration; temperature-compensated array avoids re-trim during thermal soak testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digitally controlled potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5241BRMZ10 | 10 kΩ, I²C interface, 256 taps, ±30% RTOTAL tolerance, 2.7–5.5 V supply | Requires I²C host; lacks 3-wire simplicity and same power-up recall timing behavior | Choose when I²C bus is already present and higher tap resolution is needed over guaranteed 5V operation |
| MCP41010-I/P | 10 kΩ, SPI interface, 256 taps, ±20% RTOTAL, 2.7–5.5 V supply, volatile wiper register | No nonvolatile storage-requires external MCU to reload wiper on power-up | Choose when SPI interface is preferred and system firmware can manage wiper initialization sequence |
Compared with AD5241BRMZ10 and MCP41010-I/P, the X9319WS8I offers deterministic 5V-only operation, guaranteed power-up to stored value without host intervention, and simpler 3-wire control-making it optimal for cost-sensitive, standalone analog trim in industrial and display systems.
Availability
X9319WS8I 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 retention, and RoHS-compliant packaging.
Supply support for X9319WS8I 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
Intersil Corporation, now part of Renesas Electronics, designs high-performance analog and mixed-signal ICs for power management, precision analog, and interface applications.
The X9319WS8I belongs to Intersil's XDCP™ family of digitally controlled potentiometers, engineered for reliable, nonvolatile analog trimming in industrial, automotive, and display systems where mechanical potentiometers fail due to wear or environmental stress.
FAQ
What is the operating temperature range for the X9319WS8I?
The X9319WS8I is rated for -40°C to +85°C (industrial grade), matching its ordering suffix "I". This range covers full specification compliance for parameters including end-to-end resistance tolerance (±20%), ratiometric temperature coefficient (±20 ppm/°C), and wiper linearity (±1 MI). Operation outside this range may degrade performance or reliability, and is not guaranteed by the manufacturer.
Does the X9319WS8I require an external clock or microcontroller to retain its wiper position?
No. The X9319WS8I contains on-chip nonvolatile memory that automatically stores the wiper position when CS transitions HIGH while INC is HIGH. Upon subsequent power-up, the device recalls that stored position without any external clock, MCU interaction, or additional circuitry-enabling true "set-and-forget" analog trimming.
Can the X9319WS8I be used with supply voltages other than 5V?
The X9319WS8I is specified only for VCC = 4.5 V to 5.5 V. While absolute maximum ratings allow transient excursions to +7V on digital pins, sustained operation outside the 4.5–5.5 V range violates datasheet conditions and risks incorrect counter behavior, failed NV store operations, or accelerated wear. It is not designed for 3.3V or dual-supply operation.
How does the make-before-break wiper switching benefit circuit stability?
The X9319WS8I's make-before-break switching ensures the wiper remains electrically connected to the resistor array during tap transitions-preventing momentary open circuits. In feedback paths (e.g., voltage regulator dividers or op-amp gain networks), this avoids output glitches, latch-up, or instability that would occur with break-before-make behavior found in some competing DCPs.
Is the X9319WS8I pin-compatible with other members of the X9319 family?
Yes-the X9319WS8I shares identical 8-lead SOIC pinout and electrical interface with all X9319 variants (e.g., X9319WS8Z, X9319WS8IZ). Differences are limited to temperature grade (-40°C to +85°C for "I", 0°C to +70°C for "Z") and marking; all share the same RTOTAL (10 kΩ), 100-tap architecture, 3-wire protocol, and nonvolatile store functionality.
X9319WS8I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- XDCP™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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-SOIC
- Operating Temperature:
- -40°C ~ 85°C
- Resistance - Wiper (Ohms) (Typ):
- 40
X9319WS8I FAQ
1.How can I place an order for X9319WS8I through Aetrix?
Please submit a Request for Quotation (RFQ) for X9319WS8I 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 X9319WS8I reliable?
The price and inventory of X9319WS8I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X9319WS8I is usually 5 days.
3.What payment methods are accepted for X9319WS8I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9319WS8I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9319WS8I?
X9319WS8I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9319WS8I 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 X9319WS8I?
For technical support, including X9319WS8I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9319WS8I requirements.
6.How does Aetrix verify that X9319WS8I is sourced from the original manufacturer or authorized distributors?
All X9319WS8I 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 X9319WS8I meets industry standards.
7.What is the process for return or replacement of X9319WS8I?
All X9319WS8I units undergo pre-shipment inspection (PSI). If there is an issue with X9319WS8I, 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 X9319WS8I part is unused and in its original packaging.
Return procedure for X9319WS8I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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