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Renesas X9319WS8Z
- Part No.:
- X9319WS8Z
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
X9319WS8Z.pdf
- Description:
- IC DGTL POT 10KOHM 100TAP 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,717
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Product details
Overview
X9319WS8Z 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-biased circuits.
For engineers reviewing the X9319WS8Z datasheet, X9319WS8Z pinout, X9319WS8Z application, or X9319WS8Z equivalent, this device supports stable bias control in LCDs, laser diode drivers, and voltage regulator feedback loops-requiring verified wiper endurance (100k cycles), ratiometric temperature stability (±20 ppm/°C), and power-up recall behavior.
Technical Context
The X9319WS8Z integrates a 99-element resistor array with make-before-break wiper switching, a 7-bit up/down counter, and nonvolatile memory for wiper position retention. 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 delivers ±1% absolute linearity with 40 Ω typical wiper resistance. The device enters standby mode (≤1 mA) when deselected and exhibits 100-year data retention per bit.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| End-to-end resistance | 10 kΩ ±20% - defines full-scale analog range for voltage division or current limiting |
| Wiper resolution | 100 tap points (0–99) - enables 1% step resolution for fine analog adjustment |
| Nonvolatile storage | 100,000 write cycles / 100 years retention - ensures reliable factory/user calibration persistence |
| Supply voltage | 4.5 V to 5.5 V - compatible with standard 5V digital logic and analog rails |
| Terminal voltage range | 0 V to +10 V on RH/RL/RW - supports direct interfacing with unbuffered op-amp references and regulators |
| Wiper resistance | 40 Ω typical (max 200 Ω) - limits insertion error in low-impedance feedback paths |
| Linearity error | ±1% absolute, ±0.2% relative - maintains monotonicity and predictable transfer function across full scale |
Pinout & Package
Package: 8-lead SOIC (150 mil), Pb-free (RoHS compliant), M8.15E outline.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 INC | Increment clock input | Negative-edge-triggered control signal; toggling moves wiper one position in U/D direction |
| 2 U/D | Direction control | Logic level selects wiper increment (HIGH) or decrement (LOW) on each INC edge |
| 3 RH | High terminal | Fixed end of resistor array; connects to highest potential node in voltage divider configuration |
| 4 VSS | Ground reference | Return path for supply and signal; must be tied to system ground for proper operation |
| 5 RW | Wiper terminal | Movable output node; provides intermediate voltage/current between RH and RL |
| 6 RL | Low terminal | Fixed end of resistor array; connects to lowest potential node (e.g., ground or negative rail) |
| 7 CS | Chip select | Active-low enable; stores current wiper position to NV memory when pulled HIGH while INC = HIGH |
| 8 VCC | Supply voltage | 5V ±10% power source; powers internal logic, memory, and resistor array biasing |
Key Features
| Feature | Design Value |
|---|---|
| Nonvolatile wiper position recall | Automatically restores last stored tap position at power-up-enables consistent startup behavior without host reinitialization |
| Make-before-break wiper switching | Prevents open-circuit transients during tap transitions-critical for stable feedback in closed-loop regulators and amplifiers |
| Ratiometric temperature coefficient | ±20 ppm/°C-ensures stable voltage division ratio over temperature, independent of absolute resistance drift |
| Low-power CMOS design | 3 mA active current, ≤1 mA standby-reduces thermal load and simplifies power budgeting in space-constrained systems |
| 10 V terminal voltage rating | Supports direct connection to 10 V reference sources or regulator outputs without external level-shifting or attenuation |
Applications
| LCD Bias Control | Laser Diode Bias Control |
|---|---|
Use Scenario: Adjusting contrast and brightness in monochrome or segment LCD displays using analog voltage bias. IC Role / Device Role / Timing Role: Three-terminal potentiometer providing programmable DC bias voltage to LCD common electrode or segment driver reference. Use Value: Enables factory calibration and dynamic user adjustment without mechanical trimmers; retains setting across power cycles. | Use Scenario: Setting precise bias current for laser diode drivers in optical transceivers or industrial sensors. IC Role / Device Role / Timing Role: Two-terminal variable resistor in the feedback path of a constant-current source controlling laser diode forward current. Use Value: Delivers stable, repeatable current setpoint with ±1% linearity and <200 Ω wiper resistance to minimize gain error. |
| Voltage Regulator Output Trim | Op-Amp Gain and Offset Adjustment |
Use Scenario: Fine-tuning output voltage of adjustable linear regulators (e.g., LM317) or DC-DC controllers. IC Role / Device Role / Timing Role: Resistor in the feedback divider network, where RW serves as adjustable node between RH (output) and RL (ground). Use Value: Provides digital recalibration capability post-manufacture; eliminates need for manual re-trimming during production test or field service. | Use Scenario: Calibrating gain and DC offset in instrumentation amplifiers or sensor signal conditioning stages. IC Role / Device Role / Timing Role: Dual-role component: used as variable resistor in gain-setting network and as voltage divider for offset injection. Use Value: Supports automated test system calibration via 3-wire interface; nonvolatile storage preserves per-unit compensation coefficients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digitally controlled potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5243BRMZ10 | I²C interface, dual-channel, 10 kΩ, ±30% end-to-end tolerance, 256 taps | Requires I²C host support; lacks nonvolatile store on power cycle-relies on external controller for state retention | Select when dual independent pots and I²C bus integration are required; not drop-in for CS/U/D/INC timing-critical designs |
| MCP41010-I/P | SPI interface, single-channel, 10 kΩ, ±20% tolerance, 256 taps, volatile wiper register only | No built-in nonvolatile memory-wiper resets to mid-scale on power-up unless externally saved | Choose for SPI-based systems needing higher resolution; requires firmware to restore calibration after power loss |
Compared with AD5243BRMZ10 and MCP41010-I/P, the X9319WS8Z uniquely combines 3-wire simplicity, guaranteed power-up recall, and ±1% linearity-making it optimal for cost-sensitive, single-pot applications where deterministic startup behavior and analog precision are mandatory.
Availability
X9319WS8Z is available at Aetrix Electronics and suitable for LCD bias control, laser diode biasing, and voltage regulator output trimming requiring stable component supply, long-term calibration integrity, and RoHS-compliant packaging.
Supply support for X9319WS8Z 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 X9319WS8Z belongs to Intersil's XDCP™ family of digitally controlled potentiometers, engineered for replacing mechanical trimmers in calibration-critical analog circuits where reliability, repeatability, and nonvolatile setting retention are essential.
FAQ
What is the operating temperature range for the X9319WS8Z?
The X9319WS8Z is specified for commercial operation from 0°C to +70°C. Its electrical parameters-including end-to-end resistance tolerance, linearity, and supply current-are guaranteed across this range. The device also supports industrial-grade variants (e.g., X9319WS8IZ) rated from –40°C to +85°C, but the X9319WS8Z itself is qualified only for the 0°C to +70°C range per its ordering information.
Does the X9319WS8Z require an external pull-up resistor on the CS pin?
No, the X9319WS8Z does not require an external pull-up on CS. The CS input has TTL-compatible thresholds (VIL ≤ 0.8 V, VIH ≥ 2 V) and leakage current under ±10 µA, allowing direct connection to microcontroller GPIO pins. Pull-up resistors are unnecessary unless the host system demands fail-safe deselection during reset; in such cases, a 10–100 kΩ pull-up to VCC may be added-but it is not required for basic operation of the X9319WS8Z.
How is the wiper position stored in nonvolatile memory on the X9319WS8Z?
The X9319WS8Z stores the current wiper position when CS transitions from LOW to HIGH while the INC input is held HIGH. This store command must occur after wiper movement completes and before CS rises. Once stored, the value persists for 100 years and automatically loads into the wiper counter on next power-up. No external programming voltage or additional timing sequence is needed-the X9319WS8Z handles all NV memory operations internally.
Can the X9319WS8Z be used with a 3.3 V microcontroller interface?
Yes, the X9319WS8Z can interface with 3.3 V microcontrollers, provided VCC remains at 5 V. Its CS, U/D, and INC inputs accept VIH ≥ 2 V and VIL ≤ 0.8 V-fully compatible with 3.3 V logic HIGH/LOW levels. However, VCC must be 5 V ±10% to meet internal bias and memory programming requirements; the X9319WS8Z is not rated for 3.3 V supply operation.
What is the maximum allowable voltage across RH and RL terminals of the X9319WS8Z?
The X9319WS8Z allows up to +10 V across RH and RL terminals with respect to VSS, as specified in Absolute Maximum Ratings. This applies regardless of VCC level, enabling use in circuits where the potentiometer operates from a higher-voltage analog rail (e.g., 10 V reference or regulator output) while the digital interface runs from 5 V. Exceeding +10 V risks permanent damage to the internal resistor array switches.
X9319WS8Z 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:
- 0°C ~ 70°C
- Resistance - Wiper (Ohms) (Typ):
- 40
X9319WS8Z FAQ
1.How can I place an order for X9319WS8Z through Aetrix?
Please submit a Request for Quotation (RFQ) for X9319WS8Z 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 X9319WS8Z reliable?
The price and inventory of X9319WS8Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X9319WS8Z is usually 5 days.
3.What payment methods are accepted for X9319WS8Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9319WS8Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9319WS8Z?
X9319WS8Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9319WS8Z 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 X9319WS8Z?
For technical support, including X9319WS8Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9319WS8Z requirements.
6.How does Aetrix verify that X9319WS8Z is sourced from the original manufacturer or authorized distributors?
All X9319WS8Z 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 X9319WS8Z meets industry standards.
7.What is the process for return or replacement of X9319WS8Z?
All X9319WS8Z units undergo pre-shipment inspection (PSI). If there is an issue with X9319WS8Z, 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 X9319WS8Z part is unused and in its original packaging.
Return procedure for X9319WS8Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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