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Renesas X9319WP8
- Part No.:
- X9319WP8
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
X9319WP8.pdf
- Description:
- IC DGTL POT 10KOHM 100TAP 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,027
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Product details
Overview
X9319WP8 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 three-terminal voltage divider or two-terminal variable resistor for precision analog trimming in DC bias, gain/offset, LCD bias, and laser diode control circuits.
For engineers reviewing the X9319WP8 datasheet, X9319WP8 pinout, X9319WP8 application, or X9319WP8 equivalent, key selection criteria include its ±20% end-to-end resistance tolerance, 40–200 Ω wiper resistance, 100-year data retention, -40°C to +85°C industrial temperature range, and SOIC-8 package compatibility with standard reflow profiles.
Technical Context
The X9319WP8 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 = 4.5–5.5 V, draws ≤3 mA active current and ≤1 mA standby current, and supports terminal voltages from 0 to +10 V across RH/RL/RW. Absolute linearity is ±1 MI, ratiometric temperature coefficient is ±20 ppm/°C, and wiper-to-wiper capacitance is 25 pF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RTOTAL | 10 kΩ end-to-end resistance; defines full-scale voltage division range and load interaction in bias networks. |
| Wiper Positions | 100 discrete tap points (0–99); enables 1% resolution adjustment of analog signal levels. |
| Nonvolatile Memory | 100-year data retention and 100,000 write cycles; ensures factory-set or user-trimmed values survive power cycling. |
| VCC Range | 4.5 V to 5.5 V; compatible with standard 5 V digital logic rails and tolerant of ±10% supply variation. |
| Terminal Voltage Range | 0 V to +10 V on RH/RL/RW; supports direct interfacing with analog front-ends without level-shifting. |
| Wiper Resistance | 40 Ω typical, 200 Ω max; contributes minimal series error in low-impedance feedback paths. |
| Operating Temp | -40°C to +85°C; qualified for industrial environments including embedded controllers and optical modules. |
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; advances or retreats wiper position when CS is LOW. |
| 2 U/D | Direction control input | Sets wiper movement direction (up/down) during INC transitions; latched on each INC edge. |
| 3 RH | High terminal | Fixed end of resistor array; referenced as "high" only by wiper motion direction, not voltage polarity. |
| 4 VSS | Ground reference | Logic and analog ground return; must be connected before applying RH/RL potentials. |
| 5 RW | Wiper terminal | Movable contact point; connects to one of 100 taps via electronic switches with 40 Ω typical series resistance. |
| 6 RL | Low terminal | Fixed end of resistor array; completes three-terminal potentiometer configuration with RH and RW. |
| 7 CS | Chip select | Active-LOW enable; initiates nonvolatile store when transitioned HIGH while INC is HIGH. |
| 8 VCC | Supply voltage | +4.5 V to +5.5 V power rail; powers logic, memory, and resistor array; ramp rate must be ≥0.2 V/ms. |
Key Features
| Feature | Design Value |
|---|---|
| 3-wire serial interface | Minimal GPIO usage (CS/U/D/INC) enables integration into microcontroller-based trim systems without SPI/I²C peripherals. |
| Make-before-break wiper switching | Prevents open-circuit transients during tap changes; avoids signal dropout in sensitive analog feedback loops. |
| Temperature-compensated resistor array | ±20 ppm/°C ratiometric TC ensures stable voltage division ratio across -40°C to +85°C ambient. |
| Low-power CMOS design | ≤1 mA standby current allows use in battery-backed or always-on calibration subsystems. |
| End-to-end resistance tolerance | ±20% initial tolerance accommodates cost-effective trimming without requiring post-manufacture calibration. |
Applications
| LCD Bias Control | Laser Diode Bias Control |
|---|---|
Use Scenario: Adjusting VCOM or gamma reference voltage in TFT-LCD panels to maintain grayscale fidelity across temperature and aging. IC Role / Device Role / Timing Role: Three-terminal potentiometer providing programmable DC offset to op-amp-based reference buffers. Use Value: Enables factory calibration and field recalibration without mechanical potentiometers; retains settings through panel power cycles. | Use Scenario: Setting precise bias current for laser diodes in fiber-optic transceivers to meet eye-diagram compliance and lifetime requirements. IC Role / Device Role / Timing Role: Two-terminal variable resistor in the feedback path of a constant-current source IC (e.g., LM334). Use Value: Compensates for diode forward-voltage drift over temperature; eliminates manual retrim during production burn-in. |
| Voltage Regulator Output Trim | Op-Amp Gain/Offset Adjustment |
Use Scenario: Fine-tuning output voltage of adjustable LDOs (e.g., LM317) in test equipment or programmable power supplies. IC Role / Device Role / Timing Role: Three-terminal potentiometer replacing mechanical trimmer in R1/R2 feedback divider network. Use Value: Supports remote digital calibration via MCU; stores last-trimmed value to ensure repeatable startup voltage. | Use Scenario: Calibrating input offset voltage or closed-loop gain in instrumentation amplifiers used in sensor signal conditioning. IC Role / Device Role / Timing Role: Two-terminal variable resistor in op-amp offset-null or gain-setting path. Use Value: Achieves <±1 mV offset nulling accuracy; avoids solder-joint degradation associated with mechanical trims in high-reliability systems. |
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 | 256-tap I²C interface, 10 kΩ, ±30% RTOTAL tolerance, 500 kΩ wiper resistance, no nonvolatile store. | Requires I²C host; unsuitable for power-up recall; higher wiper resistance limits use in low-impedance feedback paths. | Select when I²C bus availability and higher resolution outweigh need for nonvolatile recall and low wiper R. |
| MCP41010-I/P | 256-tap SPI interface, 10 kΩ, ±20% RTOTAL, volatile memory only, 120 Ω wiper resistance, 2.7–5.5 V operation. | No power-up recall; requires external EEPROM or MCU firmware to restore setting; wider VCC range but lacks NV memory. | Select when SPI interface is preferred and system firmware can manage wiper state persistence. |
Compared with AD5170BRMZ-10 and MCP41010-I/P, the X9319WP8 uniquely combines 100-tap resolution, guaranteed nonvolatile recall, low 40 Ω wiper resistance, and simple 3-wire control-making it optimal for industrial analog trim where reliability, self-contained operation, and minimal GPIO count are critical.
Availability
X9319WP8 is available at Aetrix Electronics and suitable for LCD bias control, laser diode biasing, voltage regulator output trimming, and op-amp gain/offset calibration requiring stable component supply across industrial temperature ranges and long product lifecycles.
Supply support for X9319WP8 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 X9319 family delivers solid-state digital potentiometers optimized for industrial and telecom analog trimming-emphasizing nonvolatile recall, temperature stability, and robustness in unattended calibration systems.
FAQ
What is the maximum terminal voltage rating for the X9319WP8?
The X9319WP8 supports RH, RL, and RW terminal voltages from 0 V to +10 V with respect to VSS. Exceeding +10 V risks exceeding absolute maximum ratings and may cause irreversible damage. This rating enables direct use in analog signal chains without external level-shifting circuitry.
Does the X9319WP8 retain its wiper position after power loss?
Yes, the X9319WP8 stores the wiper position in nonvolatile memory and automatically recalls it on power-up. This behavior is guaranteed for 100 years with 100,000 write cycles per bit, eliminating need for external memory or initialization routines in host firmware.
Can the X9319WP8 be used as a two-terminal variable resistor?
Yes, the X9319WP8 supports two-terminal operation by connecting either RH or RL to RW and using the remaining fixed terminal with RW. This configuration provides programmable resistance from 0 Ω to 10 kΩ, suitable for current-setting applications like LED or laser diode bias control.
What is the wiper resistance specification for the X9319WP8?
The X9319WP8 has a typical wiper resistance of 40 Ω and a maximum of 200 Ω at 25°C. This low series resistance minimizes insertion error in precision voltage-divider and feedback-path applications, especially compared to alternatives with >100 Ω wiper R.
How does the X9319WP8 handle wiper movement during rapid INC toggling?
The X9319WP8 uses make-before-break switching during wiper transitions, ensuring continuous connection between RW and the resistor array. When multiple INC edges occur rapidly, intermediate taps remain momentarily connected-temporarily reducing effective RTOTAL-but final position settles within 500 µs after last INC edge.
X9319WP8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- XDCP™
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- 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:
- Through Hole
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-PDIP
- Operating Temperature:
- 0°C ~ 70°C
- Resistance - Wiper (Ohms) (Typ):
- 40
X9319WP8 FAQ
1.How can I place an order for X9319WP8 through Aetrix?
Please submit a Request for Quotation (RFQ) for X9319WP8 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 X9319WP8 reliable?
The price and inventory of X9319WP8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X9319WP8 is usually 5 days.
3.What payment methods are accepted for X9319WP8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9319WP8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9319WP8?
X9319WP8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9319WP8 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 X9319WP8?
For technical support, including X9319WP8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9319WP8 requirements.
6.How does Aetrix verify that X9319WP8 is sourced from the original manufacturer or authorized distributors?
All X9319WP8 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 X9319WP8 meets industry standards.
7.What is the process for return or replacement of X9319WP8?
All X9319WP8 units undergo pre-shipment inspection (PSI). If there is an issue with X9319WP8, 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 X9319WP8 part is unused and in its original packaging.
Return procedure for X9319WP8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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