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Renesas X9315WMZ
- Part No.:
- X9315WMZ
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
X9315WMZ.pdf
- Description:
- IC DGTL POT 10KOHM 32TAP 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,770
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Product details
Overview
X9315WMZ 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 10kΩ end-to-end resistance, and functions as a three-terminal voltage divider or two-terminal variable resistor in analog signal conditioning circuits.
For engineers reviewing the X9315WMZ datasheet, X9315WMZ pinout, X9315WMZ application, or X9315WMZ equivalent, this device supports precise, repeatable analog trimming in power supply feedback loops, sensor calibration paths, and audio level control where power-up repeatability and low standby current (5µA max) are critical design requirements.
Technical Context
The X9315WMZ integrates a 5-bit up/down counter, nonvolatile EEPROM for wiper position retention, and a decoder-driven switching network across 31 resistive elements. Its wiper movement follows make-before-break switching to prevent open-circuit transients during tap transitions.
Control logic responds to negative-edge-triggered INC pulses while U/D sets direction; CS enables selection and initiates nonvolatile store when raised high with INC high. The device maintains wiper position across power cycles and supports temperature-compensated operation over 0°C to +70°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| End-to-end resistance | 10kΩ ±20% - defines full-scale analog range and load interaction in voltage divider configurations |
| Wiper tap count | 32 positions - provides 3.125% resolution per step for fine-grained analog adjustment |
| Supply voltage | 5V ±10% - compatible with standard 5V logic and analog rails without level-shifting |
| Active current | 80µA max - enables low-power operation during active wiper adjustment |
| Standby current | 5µA max - minimizes quiescent drain in battery-powered or always-on systems |
| Nonvolatile endurance | 100,000 data changes - supports long-term field recalibration without memory wear-out |
| Data retention | 100 years - ensures wiper position integrity across product lifetime without refresh |
Pinout & Package
Package: 8-lead MSOP (Pb-free), JEDEC MO-187AA compliant, dimensions 3.0mm × 3.0mm × 0.85mm (M8.118).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Positive supply rail | Provides power for internal logic and resistor array; must be ≥ VH, VL, VW |
| VSS | Ground reference | Common return path for supply and signal terminals; establishes 0V baseline |
| RH/VH | High terminal | Fixed end of resistor string; connects to maximum potential node in divider |
| RL/VL | Low terminal | Fixed end of resistor string; connects to minimum potential node (e.g., VSS) |
| RW/VW | Wiper terminal | Movable output node; resistance to RH/VH and RL/VL varies with tap position |
| CS | Chip select | Active-low enable; rising edge with INC high triggers nonvolatile store |
| U/D | Direction control | Sets wiper increment/decrement direction during INC transitions |
| INC | Increment clock | Negative-edge-triggered input; advances wiper one position per valid pulse |
Key Features
| Feature | Design Value |
|---|---|
| Solid-state construction | Eliminates mechanical wear, contact bounce, and vibration sensitivity inherent in rotary pots |
| Nonvolatile wiper storage | Recalls last-set position on power-up-no external initialization required for repeatable startup |
| Make-before-break switching | Prevents momentary open-circuit at wiper during tap transitions-critical for stable bias networks |
| Temperature-compensated array | ±300 ppm/°C total resistance drift-maintains ratio accuracy across 0°C to +70°C operating range |
| Low-voltage compatibility | Operates down to 2.7V in -2.7 variants; this X9315WMZ variant is optimized for 5V systems |
Applications
| Power Supply Feedback Trimming | Sensor Offset Calibration |
|---|---|
Use Scenario: Adjusting resistor ratio in TL431-based shunt regulator feedback loop to set precise output voltage. IC Role / Device Role / Timing Role: Digitally programmable two-terminal variable resistor replacing manual trimmer in closed-loop voltage regulation. Use Value: Enables factory programming or field recalibration without soldering; retains setting across power cycles. |
Use Scenario: Compensating zero-point offset in bridge-based pressure sensor signal chain before instrumentation amplifier. IC Role / Device Role / Timing Role: Three-terminal potentiometer configured as adjustable voltage divider injecting correction voltage into summing node. Use Value: Achieves <±1 LSB absolute linearity error across 32 taps-sufficient for 10-bit system accuracy. |
| Audio Channel Balance Control | LED Brightness Adjustment |
Use Scenario: Setting relative gain between left/right audio channels in consumer DAC output stage using dual op-amp configuration. IC Role / Device Role / Timing Role: Dual-rail-compatible voltage divider controlling DC bias point of AC-coupled signal path. Use Value: 32-step resolution provides perceptually smooth volume transition; 5µA standby current avoids battery drain in portable devices. |
Use Scenario: Controlling current-limiting resistor value in constant-current LED driver feedback path to adjust luminance. IC Role / Device Role / Timing Role: Two-terminal variable resistor in series with LED cathode to modulate forward current. Use Value: Nonvolatile storage preserves user-selected brightness after power loss-no reconfiguration needed at boot. |
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, 10kΩ, 256-tap resolution, 3V–5.5V supply | Supports dual independent pots; higher resolution but no nonvolatile store on power-up | Select when multi-channel trimming or finer adjustment granularity is required, and external microcontroller handles initialization |
| MCP41010-I/P | Single-channel SPI interface, 10kΩ, 257-tap resolution, volatile wiper register only | No EEPROM-requires host MCU to reload wiper position at startup | Choose for cost-sensitive designs where power-up repeatability is not mandatory and SPI infrastructure already exists |
Compared with AD5243BRMZ10 and MCP41010-I/P, the X9315WMZ offers guaranteed power-up repeatability via integrated nonvolatile memory and simpler 3-wire control, making it optimal for standalone analog trimming where MCU resources or firmware complexity must be minimized.
Availability
X9315WMZ is available at Aetrix Electronics and suitable for power supply feedback trimming, sensor calibration, audio channel balancing, and LED brightness control requiring stable component supply and long-term parameter retention.
Supply support for X9315WMZ 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 X9315WMZ belongs to Intersil's XDCP™ family of digitally controlled potentiometers, engineered for reliable, repeatable analog parameter adjustment in commercial-grade embedded systems where mechanical potentiometer limitations-wear, size, and calibration drift-are unacceptable.
FAQ
What is the package type and lead count for X9315WMZ?
The X9315WMZ uses an 8-lead MSOP (Mini Small Outline Plastic) package, Pb-free and RoHS-compliant per JEDEC MO-187AA (package drawing M8.118). Its compact 3.0mm × 3.0mm footprint supports high-density PCB layouts while maintaining thermal performance suitable for commercial-temperature operation (0°C to +70°C).
Does X9315WMZ retain its wiper position after power cycling?
Yes, the X9315WMZ stores the last wiper position in nonvolatile EEPROM memory. Upon power-up, it automatically recalls that stored value and configures the wiper accordingly-no external controller or initialization sequence is required. This behavior is intrinsic to the X9315WMZ and confirmed in the FN8179 datasheet Section "Principles of Operation".
What is the maximum wiper current rating for X9315WMZ?
The X9315WMZ specifies a maximum wiper current (IW) of ±3.75mA under recommended operating conditions. Exceeding this limit risks exceeding the 10mW maximum power rating or accelerating wear in the wiper switching network. This rating applies regardless of tap position and assumes proper voltage constraints (VH, VL, VW ≤ VCC).
Can X9315WMZ operate from a 3.3V supply?
No-the X9315WMZ variant is specified for 5V ±10% (4.5V to 5.5V). For 3.3V operation, Intersil offers the X9315WMZ-2.7 variant (part number X9315WMZ-2.7T1), which supports 2.7V to 5.5V. Using the standard X9315WMZ below 4.5V violates recommended operating conditions and may result in unreliable wiper positioning or increased ICC2 store current.
How does the 3-wire interface of X9315WMZ differ from I²C or SPI protocols?
The X9315WMZ uses a dedicated 3-wire interface (CS, U/D, INC) with no address or data bytes-wiper movement is controlled by toggling INC while holding U/D high/low. Unlike I²C or SPI, it requires no clock stretching, ACK/NACK, or command framing. This simplifies host-side implementation but limits multi-device sharing on a single bus compared to addressable protocols used in alternatives like AD5243BRMZ10.
X9315WMZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- XDCP™
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm 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-MSOP
- Operating Temperature:
- 0°C ~ 70°C
- Resistance - Wiper (Ohms) (Typ):
- 200
X9315WMZ FAQ
1.How can I place an order for X9315WMZ through Aetrix?
Please submit a Request for Quotation (RFQ) for X9315WMZ 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 X9315WMZ reliable?
The price and inventory of X9315WMZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X9315WMZ is usually 5 days.
3.What payment methods are accepted for X9315WMZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9315WMZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9315WMZ?
X9315WMZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9315WMZ 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 X9315WMZ?
For technical support, including X9315WMZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9315WMZ requirements.
6.How does Aetrix verify that X9315WMZ is sourced from the original manufacturer or authorized distributors?
All X9315WMZ 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 X9315WMZ meets industry standards.
7.What is the process for return or replacement of X9315WMZ?
All X9315WMZ units undergo pre-shipment inspection (PSI). If there is an issue with X9315WMZ, 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 X9315WMZ part is unused and in its original packaging.
Return procedure for X9315WMZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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