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Renesas X9319WS8IZT1
- Part No.:
- X9319WS8IZT1
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
X9319WS8IZT1.pdf
- Description:
- IC DGTL POT 10KOHM 100TAP 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,881
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Product details
Overview
X9319WS8IZT1 from Intersil is a digitally controlled potentiometer (XDCP™) implementing a 99-element resistor array with 100 wiper tap points, nonvolatile wiper position storage, and 3-wire serial interface (CS/U/D/INC). It functions as a three-terminal voltage divider or two-terminal variable resistor for precision analog trimming in industrial temperature range (−40°C to +85°C), with end-to-end resistance of 10 kΩ and ±20% tolerance.
For engineers reviewing the X9319WS8IZT1 datasheet, X9319WS8IZT1 pinout, X9319WS8IZT1 application, or X9319WS8IZT1 equivalent, key selection considerations include its nonvolatile memory retention (100 years), low-power CMOS operation (3 mA active, 1 mA standby), 0–10 V terminal voltage rating, and SOIC-8 package compatibility with standard PCB layouts.
Technical Context
The X9319WS8IZT1 integrates a 7-bit up/down counter, decoder, and nonvolatile memory to control wiper position across 99 resistive elements. Its "make-before-break" switching ensures continuity during wiper transitions, and wiper movement is edge-triggered on INC with direction controlled by U/D logic level.
It operates from a single 5 V supply (±10%), supports 0–10 V analog voltages at RH/RL/RW terminals, and features temperature-compensated ratiometric performance (±20 ppm/°C) and absolute linearity of ±1 MI. Power-up recalls the last stored wiper position without external initialization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| End-to-end resistance | 10 kΩ ±20% - defines full-scale analog adjustment range and load interaction in voltage divider or current-limiting configurations |
| Wiper resolution | 100 tap points (0–99) - enables 1% step resolution for fine gain/offset trim without external DAC or microcontroller PWM filtering |
| Nonvolatile memory | 100-year data retention, 100,000 write cycles - eliminates need for battery-backed RAM or external EEPROM in field-deployed systems |
| Supply & power | VCC = 4.5–5.5 V; ICC ≤ 3 mA active, ISB ≤ 1 mA standby - compatible with 5 V logic rails and suitable for low-power embedded bias control |
| Analog voltage range | RH/RL/RW: 0 to +10 V - supports direct interfacing with op-amp feedback paths, laser diode bias, and LCD VCOM circuits without level-shifting |
| Timing performance | tIW = 100–500 µs wiper settling; tCYC = 4 µs INC cycle - enables real-time trimming updates synchronized to system control loops |
| Temperature range | −40°C to +85°C - qualified for industrial-grade operation without derating in ambient-temperature-sensitive applications |
Pinout & Package
Package: 8-lead SOIC (150 mil, Pb-free, RoHS compliant, JEDEC MS-012, pkg drawing M8.15E).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 INC | Increment clock input | Negative-edge-triggered control signal; toggling moves wiper up/down per U/D state; requires CS low to be active |
| 2 U/D | Up/down direction control | Logic level selects wiper movement direction during INC transitions; may be changed dynamically while CS is low |
| 3 RH | High terminal | Fixed end of resistor array; voltage reference point for top of voltage divider; rated for 0–10 V relative to VSS |
| 4 VSS | Ground | System ground reference for digital control and analog terminals; must be connected before VCC during power-up |
| 5 RW | Wiper terminal | Movable output node; series resistance ≤200 Ω; settles within 500 µs after INC edge; connects to feedback or bias nodes |
| 6 RL | Low terminal | Fixed end of resistor array; voltage reference point for bottom of voltage divider; rated for 0–10 V relative to VSS |
| 7 CS | Chip select | Active-low enable; wiper position stored to NV memory when CS rises while INC is high; device enters standby when CS high |
| 8 VCC | Supply voltage | +5 V ±10% power rail; must ramp at 0.2–50 V/ms; powers both digital control and analog resistor array |
Key Features
| Feature | Design Value |
|---|---|
| Solid-state potentiometer architecture | Eliminates mechanical wear, vibration sensitivity, and contact noise-enables >100,000 adjustments over product lifetime |
| Nonvolatile wiper position storage | Automatically restores last-trimmed setting at power-up-removes need for host MCU initialization or calibration sequence |
| 3-wire serial interface | Requires only CS, U/D, and INC signals-no clock or data lines needed; simplifies GPIO-based trimming in resource-constrained MCUs |
| Temperature-compensated ratiometric performance | ±20 ppm/°C ratiometric TC ensures stable voltage division ratio across −40°C to +85°C-critical for precision sensor biasing |
| Make-before-break wiper switching | Prevents open-circuit transients during tap changes-avoids glitches in op-amp feedback or regulator error amplifier paths |
Applications
| LCD Bias Control | Laser Diode Bias Control |
|---|---|
|
Use Scenario: Adjusting VCOM voltage in TFT-LCD panels to minimize image flicker and improve grayscale uniformity. IC Role / Device Role / Timing Role: Three-terminal potentiometer providing programmable DC offset to LCD source driver reference network. Use Value: Enables factory and field calibration of display gamma without hardware modification; leverages nonvolatile storage to retain panel-specific settings across power cycles. |
Use Scenario: Setting precise bias current for laser diodes in fiber-optic transceivers or medical laser modules. IC Role / Device Role / Timing Role: Two-terminal variable resistor in the feedback path of a constant-current laser driver IC. Use Value: Delivers stable, drift-resistant current setpoint over temperature; 10 kΩ value matches typical driver reference impedance requirements. |
| 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 in power management subsystems. IC Role / Device Role / Timing Role: Three-terminal potentiometer replacing mechanical trimmer in regulator feedback divider network. Use Value: Allows remote or automated calibration during production test; 0–10 V terminal rating accommodates high-side feedback configurations up to 10 V. |
Use Scenario: Calibrating gain and DC offset in instrumentation amplifiers or sensor signal conditioning stages. IC Role / Device Role / Timing Role: Dual-role device: RH–RW–RL used as voltage divider for offset nulling; RW–RL used as series resistor for gain-setting feedback. Use Value: Achieves <±1% absolute linearity and ±0.2% relative linearity-meets MIL-STD-883 Class B accuracy requirements for test equipment. |
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 | Single-channel, I²C interface, 10 kΩ, 256 taps, ±30% RTOTAL tolerance, 100-year NV retention | Requires I²C bus and address configuration; lacks 3-wire simplicity and direct GPIO compatibility | Choose AD5241BRMZ10 if system already uses I²C infrastructure and higher tap resolution (256 vs. 100) is required |
| MCP41010-I/P | Single-channel, SPI interface, 10 kΩ, 257 taps, volatile memory (no auto-recall), 5 V supply only | No nonvolatile storage-requires MCU to reprogram wiper at every power-up; SPI needs 4 pins vs. 3 for X9319WS8IZT1 | Choose MCP41010-I/P only if SPI is preferred and host firmware can guarantee reliable power-up initialization |
Compared with AD5241BRMZ10 and MCP41010-I/P, the X9319WS8IZT1 offers unique advantages in minimal GPIO count (3-wire), guaranteed power-up recall without host intervention, and industrial temperature qualification-making it optimal for standalone analog trimming in harsh or maintenance-limited environments.
Availability
X9319WS8IZT1 is available at Aetrix Electronics and suitable for LCD bias control, laser diode biasing, and voltage regulator output trimming requiring stable component supply across industrial temperature ranges and long product lifecycles.
Supply support for X9319WS8IZT1 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 X9319WS8IZT1 belongs to Intersil's XDCP™ family of digitally controlled potentiometers, engineered specifically for replacing mechanical trimmers in industrial, telecom, and medical systems where reliability, nonvolatility, and temperature stability are critical.
FAQ
What is the operating temperature range for the X9319WS8IZT1?
The X9319WS8IZT1 is rated for industrial operation from −40°C to +85°C. This range is validated across all key parameters-including end-to-end resistance tolerance, wiper linearity, and nonvolatile memory endurance-ensuring consistent performance in demanding environments such as factory automation and outdoor communications equipment. The X9319WS8IZT1 maintains its 10 kΩ ±20% resistance and ±1 MI absolute linearity throughout this full range.
How does the X9319WS8IZT1 store and recall wiper position?
The X9319WS8IZT1 stores wiper position in nonvolatile memory when CS transitions HIGH while INC is held HIGH. Upon power-up, the device automatically recalls that stored value and positions the wiper accordingly-no external controller or initialization sequence is required. This behavior is intrinsic to the X9319WS8IZT1 design and occurs within 500 µs after VCC stabilizes, enabling true "set-and-forget" analog calibration.
Can the X9319WS8IZT1 be used with supply voltages other than 5 V?
The X9319WS8IZT1 is specified for VCC = 4.5 V to 5.5 V only. Operation outside this range violates Absolute Maximum Ratings and risks latch-up or parametric failure. While analog terminals (RH/RL/RW) tolerate 0–10 V, the internal CMOS control circuitry requires strict 5 V ±10% supply regulation. Using the X9319WS8IZT1 with 3.3 V or 12 V supplies is not supported and will result in undefined behavior or permanent damage.
What is the maximum voltage allowed across RH and RL terminals of the X9319WS8IZT1?
The X9319WS8IZT1 allows up to +10 V applied between RH and RL terminals, referenced to VSS. This 0–10 V rating applies independently to each terminal, meaning RH may be at +10 V while RL is at 0 V (or vice versa), provided neither exceeds the −1 V to +12 V absolute maximum with respect to VSS. Exceeding +10 V across RH–RL degrades linearity and risks irreversible resistance drift in the X9319WS8IZT1 resistor array.
Does the X9319WS8IZT1 support simultaneous multi-position wiper movement?
No-the X9319WS8IZT1 moves the wiper one tap per INC edge; multiple positions require sequential INC pulses. However, its "make-before-break" switching ensures no open-circuit condition occurs during transitions, and wiper settling time remains ≤500 µs per step (tIW). Rapid successive INC edges allow effective coarse/fine adjustment strategies, but the X9319WS8IZT1 does not implement burst-mode or register-load commands for bulk position changes.
X9319WS8IZT1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- XDCP™
- Package/Case:
- 8-SOIC (0.154", 3.90mm 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):
- 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
X9319WS8IZT1 FAQ
1.How can I place an order for X9319WS8IZT1 through Aetrix?
Please submit a Request for Quotation (RFQ) for X9319WS8IZT1 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 X9319WS8IZT1 reliable?
The price and inventory of X9319WS8IZT1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X9319WS8IZT1 is usually 5 days.
3.What payment methods are accepted for X9319WS8IZT1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9319WS8IZT1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9319WS8IZT1?
X9319WS8IZT1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9319WS8IZT1 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 X9319WS8IZT1?
For technical support, including X9319WS8IZT1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9319WS8IZT1 requirements.
6.How does Aetrix verify that X9319WS8IZT1 is sourced from the original manufacturer or authorized distributors?
All X9319WS8IZT1 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 X9319WS8IZT1 meets industry standards.
7.What is the process for return or replacement of X9319WS8IZT1?
All X9319WS8IZT1 units undergo pre-shipment inspection (PSI). If there is an issue with X9319WS8IZT1, 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 X9319WS8IZT1 part is unused and in its original packaging.
Return procedure for X9319WS8IZT1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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