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Renesas X9315WMI-2.7T1
- Part No.:
- X9315WMI-2.7T1
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
X9315WMI-2.7T1.pdf
- Description:
- IC DGTL POT 10KOHM 32TAP 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,896
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Product details
Overview
X9315WMI-2.7T1 from Intersil is a low-noise, low-power, 32-tap digitally controlled potentiometer (XDCP™) implemented with 31 resistive elements and nonvolatile memory. It operates from 2.7V to 5.5V, offers 10kΩ end-to-end resistance, supports −40°C to +85°C industrial temperature range, and uses a 3-wire serial interface (CS/U/D/INC) for wiper position control in analog signal conditioning circuits.
For engineers reviewing the X9315WMI-2.7T1 datasheet, X9315WMI-2.7T1 pinout, X9315WMI-2.7T1 application, or X9315WMI-2.7T1 equivalent, this page delivers verified specifications, validated MSOP-8 pin mapping, confirmed nonvolatile wiper storage behavior, and real-world use cases in precision voltage divider and programmable gain configurations.
Technical Context
The X9315WMI-2.7T1 integrates a 5-bit up/down counter, 5-bit nonvolatile memory, and a resistor array with make-before-break wiper switching. Its control logic responds to negative-edge-triggered INC pulses while U/D sets direction, and CS enables selection or initiates EEPROM store on rising edge with INC HIGH.
It implements solid-state potentiometer functionality with temperature-compensated 31-element array, ±20% RTOTAL tolerance, and wiper resistance of 400–1000Ω at 2.7V. The device retains wiper position for 100 years and withstands 100,000 data changes per bit, enabling reliable recalibration after power cycles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RTOTAL | 10kΩ ±20% - defines full-scale resistance range for voltage division or current limiting |
| VCC Range | 2.7V to 5.5V - supports single-supply operation in battery-powered and mixed-voltage systems |
| Wiper Resolution | 32 taps (0–31) - provides 3.125% step resolution across full resistance range |
| Nonvolatile Store Time | 5–10ms - determines minimum CS pulse width required to commit wiper position to EEPROM |
| Active Current | 80µA max at VCC = 2.7V - enables ultra-low-power trimming in always-on sensor front-ends |
| Standby Current | 5µA max - ensures minimal quiescent drain during system sleep modes |
| Wiper Resistance | 400–1000Ω at VCC = 2.7V - impacts loading error in high-impedance feedback paths |
Pinout & Package
Package: 8-lead MSOP (Pb-free), JEDEC MO-187AA compliant, body dimensions 3.0mm × 3.0mm × 0.85mm (M8.118).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: RH/VH | High terminal | Fixed end of resistor array; connects to maximum potential (VCC) in voltage divider mode |
| 2: RW/VW | Wiper terminal | Movable tap point; output node whose voltage scales linearly with counter value (0–31) |
| 3: RL/VL | Low terminal | Fixed end of resistor array; connects to minimum potential (VSS) in voltage divider mode |
| 4: VSS | Ground | Reference return path for supply and signal; must be tied to system GND |
| 5: VCC | Supply voltage | Power input for logic and resistor array; must be ≥ VH, VL, VW per absolute ratings |
| 6: U/D | Up/down control | Static logic level determining wiper increment/decrement direction during INC transitions |
| 7: INC | Increment input | Negative-edge-triggered clock; advances wiper one tap per valid edge when CS is LOW |
| 8: CS | Chip select | Active-low enable; rising edge with INC HIGH stores current wiper position to nonvolatile memory |
Key Features
| Feature | Design Value |
|---|---|
| Nonvolatile wiper storage | Retains last-set position across power cycles without external backup; eliminates startup calibration |
| Make-before-break wiper switching | Prevents open-circuit transients during tap transitions; avoids signal dropout in audio or sensor paths |
| Temperature-compensated resistor array | ±300 ppm/°C RTOTAL drift - maintains stable gain/attenuation over industrial temperature range |
| Low 2.7V operation | Full functionality down to 2.7V - enables direct integration with Li-ion battery or low-VDD microcontrollers |
| 3-wire serial interface | Requires only CS, U/D, and INC - minimizes GPIO usage vs. SPI/I²C; no clock line needed |
Applications
| Audio Signal Level Control | Programmable Voltage Reference |
|---|---|
|
Use Scenario: Adjusting volume or tone in portable audio amplifiers with battery supply. IC Role / Device Role / Timing Role: Two-terminal variable resistor setting gain of op-amp stage; wiper position stored at power-down. Use Value: Eliminates mechanical pot wear and enables software-controlled presets; 10kΩ RTOTAL matches standard audio impedance targets. |
Use Scenario: Generating stable, user-adjustable reference voltage for ADCs in industrial sensors. IC Role / Device Role / Timing Role: Three-terminal potentiometer dividing VCC to produce ratiometric reference; nonvolatile recall ensures consistent offset. Use Value: ±20% RTOTAL tolerance and ±300 ppm/°C TC meet 12-bit ADC reference stability requirements across −40°C to +85°C. |
| Laser Diode Bias Control | Calibration Trim in Medical Instrumentation |
|
Use Scenario: Fine-tuning bias current in compact laser driver modules powered from 3.3V rails. IC Role / Device Role / Timing Role: Variable resistor in current-sense feedback loop of constant-current source; wiper adjusted during factory calibration. Use Value: 5µA standby current prevents battery drain during idle; 100,000 endurance cycles support repeated field recalibration. |
Use Scenario: Compensating for component drift in ECG front-end amplifiers requiring long-term accuracy. IC Role / Device Role / Timing Role: Precision voltage divider setting amplifier gain; stored wiper position recalled at each power-up. Use Value: 100-year data retention guarantees calibration integrity over product lifetime without maintenance. |
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, 10kΩ, 256-tap resolution; higher resolution but requires I²C bus and pull-ups. | Requires dedicated I²C lines and firmware stack; less suitable for GPIO-constrained microcontrollers. | Choose AD5241BRMZ10 when higher resolution (0.39%) and standardized digital interface outweigh pin count constraints. |
| MCP41010-I/P | Single-channel, SPI interface, 10kΩ, 257-tap resolution; active current 1mA typical - 12× higher than X9315WMI-2.7T1. | Higher power draw limits use in battery-operated devices; SPI protocol adds timing complexity. | Choose MCP41010-I/P when SPI infrastructure exists and 257-step granularity justifies increased current and layout overhead. |
Compared with AD5241BRMZ10 and MCP41010-I/P, the X9315WMI-2.7T1 delivers lowest active and standby current, simplest 3-wire control, and guaranteed nonvolatile recall without firmware intervention - making it optimal for ultra-low-power, resource-constrained embedded trimming.
Availability
X9315WMI-2.7T1 is available at Aetrix Electronics and suitable for industrial sensor calibration, portable medical device trimming, and battery-powered audio level control requiring stable component supply and long-term data retention.
Supply support for X9315WMI-2.7T1 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 X9315 family was engineered as solid-state replacements for mechanical potentiometers in industrial and medical systems where reliability, programmability, and nonvolatile setting retention are critical.
FAQ
What is the supply voltage range for the X9315WMI-2.7T1?
The X9315WMI-2.7T1 operates from 2.7V to 5.5V, as specified in the "Recommended Operating Conditions" section of the FN8179 datasheet. This extended low-voltage capability enables direct use with 2.7V–3.3V microcontrollers and single-cell Li-ion systems without level-shifting. The device maintains full functionality-including wiper movement, nonvolatile store, and 32-tap resolution-across this entire range.
Does the X9315WMI-2.7T1 retain its wiper position after power loss?
Yes, the X9315WMI-2.7T1 stores the current wiper position in nonvolatile memory upon a valid store command (CS rising edge with INC HIGH), and automatically recalls that value at power-up. Data retention is rated for 100 years, and endurance is 100,000 store cycles per bit-making it suitable for applications requiring persistent calibration without external memory or firmware initialization.
What package type does the X9315WMI-2.7T1 use?
The X9315WMI-2.7T1 is housed in an 8-lead MSOP (Mini Small Outline Plastic) package, Pb-free and RoHS-compliant, with JEDEC MO-187AA footprint (M8.118). Its compact 3.0mm × 3.0mm body and 0.65mm lead pitch support high-density PCB layouts, and the package is qualified for reflow soldering per Intersil's Pb-free profile.
How many wiper positions does the X9315WMI-2.7T1 support?
The X9315WMI-2.7T1 provides 32 discrete wiper positions (0 through 31), corresponding to a 5-bit counter driving a 31-resistor-element array. Each step represents one minimum increment (MI = RTOTAL/31 ≈ 322.6Ω for 10kΩ), and absolute linearity error is bounded by ±1 MI per tap, ensuring predictable voltage division in precision analog circuits.
Can the X9315WMI-2.7T1 be used as a two-terminal variable resistor?
Yes, the X9315WMI-2.7T1 can operate as a two-terminal variable resistor by connecting either RH/VH or RL/VL to the wiper RW/VW, leaving the unused terminal open or grounded depending on configuration. The datasheet confirms this usage in "Basic Configurations of Electronic Potentiometers" (Page 12), and the 10kΩ RTOTAL remains the effective resistance range in this mode.
X9315WMI-2.7T1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- XDCP™
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- 2.7V ~ 5.5V
- Features:
- -
- Tolerance:
- ±20%
- Temperature Coefficient (Typ):
- ±300ppm/°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-MSOP
- Operating Temperature:
- -40°C ~ 85°C
- Resistance - Wiper (Ohms) (Typ):
- 400
X9315WMI-2.7T1 FAQ
1.How can I place an order for X9315WMI-2.7T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for X9315WMI-2.7T1 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 X9315WMI-2.7T1 reliable?
The price and inventory of X9315WMI-2.7T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X9315WMI-2.7T1 is usually 5 days.
3.What payment methods are accepted for X9315WMI-2.7T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9315WMI-2.7T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9315WMI-2.7T1?
X9315WMI-2.7T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9315WMI-2.7T1 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 X9315WMI-2.7T1?
For technical support, including X9315WMI-2.7T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9315WMI-2.7T1 requirements.
6.How does Aetrix verify that X9315WMI-2.7T1 is sourced from the original manufacturer or authorized distributors?
All X9315WMI-2.7T1 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 X9315WMI-2.7T1 meets industry standards.
7.What is the process for return or replacement of X9315WMI-2.7T1?
All X9315WMI-2.7T1 units undergo pre-shipment inspection (PSI). If there is an issue with X9315WMI-2.7T1, 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 X9315WMI-2.7T1 part is unused and in its original packaging.
Return procedure for X9315WMI-2.7T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
X9315WMI-2.7T1 Tags
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MCP4018T-103E/LT
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MCP4018T-503E/LT
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MCP4011T-103E/SN
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MCP4018T-502E/LT
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MCP4017T-103E/LT
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MCP4531T-103E/MF
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MCP4021T-202E/SN
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MCP4023T-103E/CH
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