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Renesas X9315WSZ
- Part No.:
- X9315WSZ
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
X9315WSZ.pdf
- Description:
- IC DGTL POT 10KOHM 32TAP 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,591
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Product details
Overview
X9315WSZ from Intersil is a digitally controlled potentiometer (XDCP™) implementing a 31-element resistor array with 32 wiper tap positions, nonvolatile wiper position storage, and 3-wire serial interface (CS/U/D/INC). It operates at 5V ±10%, delivers end-to-end resistance of 10kΩ, supports 0°C to +70°C operation in SOIC-8 package, and serves as a solid-state replacement for mechanical potentiometers in analog signal trimming circuits.
For engineers reviewing the X9315WSZ datasheet, X9315WSZ pinout, X9315WSZ application, or X9315WSZ equivalent, this page provides verified technical context, confirmed pin functions, real-world use cases in voltage divider and variable resistor configurations, and validated alternative parts with documented functional and parametric differences.
Technical Context
The X9315WSZ uses a 5-bit up/down counter driving a decoder that selects one of 32 wiper positions across a linear 31-resistor array. Wiper movement is controlled by edge-triggered INC input with direction set by U/D logic level, and CS enables selection or initiates nonvolatile store on rising edge while INC is high.
Its resistor array features temperature-compensated elements with ±20% end-to-end resistance tolerance, ±300 ppm/°C total resistance temperature coefficient, and ratiometric coefficient of ±20 ppm/°C. The wiper terminal exhibits 200Ω typical series resistance at VCC = 5V and supports terminal voltages from VSS to VCC without damage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RTOTAL | 10kΩ ±20% - defines full-scale resistance range for voltage division or current limiting applications |
| Wiper Positions | 32 discrete taps - enables 3.125% resolution per step in voltage divider mode |
| VCC Range | 4.5V to 5.5V - compatible with standard 5V logic and analog supply rails |
| Active Current | 80µA max - ensures low power consumption during wiper adjustment cycles |
| Standby Current | 5µA max - supports battery-powered or energy-sensitive systems during idle periods |
| Nonvolatile Store Time | 5–10ms - determines minimum CS pulse width required to reliably save wiper position |
| Wiper Resistance | 200Ω typ. at 5V - contributes directly to output impedance and loading effects in precision divider networks |
Pinout & Package
Package: 8-lead narrow-body SOIC (JEDEC MS-012-AA), Pb-free (RoHS compliant), dimensions 4.90mm × 3.90mm × 1.75mm max, thermal resistance θJA = 105°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RH/VH | High terminal | Fixed end of resistor array; connects to maximum potential (VCC) in voltage divider configuration |
| 2 - RW/VW | Wiper terminal | Movable contact point; outputs intermediate voltage proportional to wiper position; 200Ω series resistance affects accuracy under load |
| 3 - RL/VL | Low terminal | Fixed end of resistor array; connects to minimum potential (VSS/GND) in voltage divider configuration |
| 4 - VSS | Ground | Reference node for all internal circuitry and external connections; must be tied to system ground plane |
| 5 - VCC | Supply voltage | Primary power rail (4.5–5.5V); powers control logic, memory, and resistor array; must be decoupled locally |
| 6 - U/D | Up/Down control input | Logic-level input determining wiper direction: HIGH = increment, LOW = decrement; may change dynamically during CS active |
| 7 - INC | Increment control input | Negative-edge triggered; each falling edge moves wiper one position in U/D-defined direction; also used with CS to initiate store |
| 8 - CS | Chip Select | Active-low enable; device responds only when LOW; rising edge with INC HIGH stores current wiper position to EEPROM |
Key Features
| Feature | Design Value |
|---|---|
| Nonvolatile wiper storage | Retains last position across power cycles for repeatable startup behavior without host reinitialization |
| 3-wire serial interface | Requires only CS, U/D, and INC signals - eliminates need for clock or data lines, simplifying microcontroller GPIO usage |
| Make-before-break switching | Prevents open-circuit transients during wiper movement, avoiding signal glitches in sensitive analog paths |
| Temperature-compensated array | ±20 ppm/°C ratiometric TC ensures stable voltage division ratio over 0°C to +70°C operating range |
| Low standby current | 5µA max enables integration into always-on sensor nodes or battery-backed systems without significant drain |
Applications
| Audio Signal Level Control | Voltage Reference Trimming |
|---|---|
|
Use Scenario: Adjusting gain or volume in line-level audio amplifiers where mechanical pot wear and noise are unacceptable. IC Role / Device Role / Timing Role: Functions as two-terminal variable resistor between amplifier feedback path and ground, setting closed-loop gain. Use Value: Eliminates mechanical wear and crackle; retains last user-set volume after power cycle via nonvolatile memory. |
Use Scenario: Calibrating output voltage of adjustable DC-DC converters or precision voltage references during production test. IC Role / Device Role / Timing Role: Acts as three-terminal potentiometer in resistor divider network feeding error amplifier feedback pin. Use Value: Enables automated digital calibration; stored trim value survives power-down, ensuring consistent output across field units. |
| Sensor Offset Compensation | LED Brightness Adjustment |
|
Use Scenario: Nulling offset voltage in bridge-based pressure or temperature sensor signal conditioning circuits. IC Role / Device Role / Timing Role: Configured as variable resistor in op-amp summing junction to inject precise offset correction current. Use Value: Provides fine-grained, repeatable offset tuning; ±1 MI absolute linearity ensures <±30mV error at 5V full scale. |
Use Scenario: User-adjustable brightness control for indicator LEDs in industrial HMIs or medical displays. IC Role / Device Role / Timing Role: Used as two-terminal variable resistor in series with LED anode to limit forward current. Use Value: Supports smooth dimming without PWM flicker; 32-step resolution gives perceptible brightness increments across full range. |
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 | 2-channel I²C interface, 256-tap resolution, 10kΩ, ±30% RTOL, 1.8–5.5V supply | Supports dual independent pots; requires I²C bus and pull-up resistors; higher resolution but looser resistance tolerance | Select when multi-channel trimming or finer adjustment granularity is needed and I²C infrastructure exists. |
| MCP41010-I/P | Single-channel SPI interface, 256-tap resolution, 10kΩ, ±20% RTOL, 2.7–5.5V supply | Uses 4-wire SPI (CS/SCK/SDI/SDO); no nonvolatile store on power loss unless externally commanded; faster update rate | Select when SPI is preferred over 3-wire protocol and host firmware can manage explicit store commands before shutdown. |
Compared with AD5243BRMZ10 and MCP41010-I/P, the X9315WSZ offers simpler 3-wire control with guaranteed nonvolatile retention on power cycle, making it optimal for single-pot, low-pin-count, and maintenance-free calibration applications where I²C/SPI overhead is undesirable.
Availability
X9315WSZ is available at Aetrix Electronics and suitable for industrial sensor calibration, medical device analog front-ends, and consumer audio equipment requiring stable component supply with RoHS-compliant packaging and commercial temperature range support.
Supply support for X9315WSZ 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 focused on power management, precision analog, and interface solutions.
The X9315WSZ belongs to Intersil's XDCP™ family of digitally controlled potentiometers, engineered specifically for replacing mechanical trimmers in analog signal conditioning, calibration, and parameter adjustment applications where reliability and nonvolatile setting retention are critical.
FAQ
What is the exact end-to-end resistance tolerance and temperature coefficient of the X9315WSZ?
The X9315WSZ has an end-to-end resistance tolerance of ±20% and a total resistance temperature coefficient of ±300 ppm/°C. Its ratiometric temperature coefficient is ±20 ppm/°C, meaning the voltage division ratio remains highly stable across temperature. These values are measured over the 0°C to +70°C operating range and are specified in the FN8179 Rev.2.00 datasheet, page 6.
Does the X9315WSZ retain its wiper position after power cycling?
Yes, the X9315WSZ automatically recalls the last stored wiper position from nonvolatile memory upon power-up. This behavior is guaranteed because the device writes the current wiper value to EEPROM whenever CS transitions HIGH while INC is held HIGH - a feature explicitly confirmed in the "Principles of Operation" section of the FN8179 datasheet, page 4.
What are the valid supply voltage limits for the X9315WSZ?
The X9315WSZ is rated for VCC = 5V ±10%, i.e., 4.5V to 5.5V. It is not rated for 2.7V operation - that specification applies only to variants marked with "-2.7" suffix (e.g., X9315WSZ-2.7). This distinction is clearly shown in the Ordering Information table on page 2 of FN8179 Rev.2.00.
Can the X9315WSZ be used as a two-terminal variable resistor?
Yes, the X9315WSZ supports both three-terminal potentiometer and two-terminal variable resistor configurations. In two-terminal mode, either RH/VH or RL/VL is left unconnected while RW/VW and the other fixed terminal form the adjustable resistance path - a usage explicitly validated in the "Basic Configurations" section (page 12) and Applications Information (page 11) of the FN8179 datasheet.
What is the maximum wiper current rating for the X9315WSZ?
The X9315WSZ has a maximum wiper current rating of ±3.75mA, as specified under "Recommended Operating Conditions" on page 6 of FN8179 Rev.2.00. Exceeding this current may cause irreversible degradation of the wiper switch resistance or long-term reliability issues, especially under continuous DC bias.
X9315WSZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- XDCP™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Taper:
- Linear
- Configuration:
- Potentiometer
- Number of Circuits:
- 1
- Number of Taps:
- 32
- 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):
- 200
X9315WSZ FAQ
1.How can I place an order for X9315WSZ through Aetrix?
Please submit a Request for Quotation (RFQ) for X9315WSZ 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 X9315WSZ reliable?
The price and inventory of X9315WSZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X9315WSZ is usually 5 days.
3.What payment methods are accepted for X9315WSZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9315WSZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9315WSZ?
X9315WSZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9315WSZ 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 X9315WSZ?
For technical support, including X9315WSZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9315WSZ requirements.
6.How does Aetrix verify that X9315WSZ is sourced from the original manufacturer or authorized distributors?
All X9315WSZ 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 X9315WSZ meets industry standards.
7.What is the process for return or replacement of X9315WSZ?
All X9315WSZ units undergo pre-shipment inspection (PSI). If there is an issue with X9315WSZ, 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 X9315WSZ part is unused and in its original packaging.
Return procedure for X9315WSZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
X9315WSZ Tags
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