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Renesas X9315WMI-2.7
- Part No.:
- X9315WMI-2.7
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
X9315WMI-2.7.pdf
- Description:
- IC DGTL POT 10KOHM 32TAP 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,156
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Product details
Overview
X9315WMI-2.7 from Intersil is a low-noise, low-power digitally controlled potentiometer (XDCP™) with 32 wiper tap points, nonvolatile memory for power-up recall, and 10kΩ end-to-end resistance. It operates from 2.7V to 5.5V, draws ≤80µA active current, and is housed in an 8-lead MSOP package rated for –40°C to +85°C industrial temperature range. It functions as a three-terminal voltage divider or two-terminal variable resistor in analog signal conditioning circuits.
For engineers reviewing the X9315WMI-2.7 datasheet, X9315WMI-2.7 pinout, X9315WMI-2.7 application, or X9315WMI-2.7 equivalent, this page provides verified specifications including wiper resistance (400–1000Ω at 2.7V), absolute linearity (±1 MI), ratiometric tempco (±20 ppm/°C), noise (–120 dBV), and EEPROM endurance (100,000 cycles).
Technical Context
The X9315WMI-2.7 implements a 31-element resistor array with make-before-break electronic wiper switching controlled by a 5-bit up/down counter. Wiper position is set via CS, U/D, and edge-triggered INC inputs and stored in nonvolatile memory on CS↑ with INC HIGH.
It supports true solid-state potentiometer operation with terminal voltages ranging from VSS to VCC, wiper series resistance of 400–1000Ω at 2.7V, and ratiometric temperature coefficient of ±20 ppm/°C - enabling stable voltage division across temperature without external calibration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| End-to-end resistance | 10kΩ ±20% - defines full-scale analog adjustment range and load interaction in voltage divider configurations |
| Supply voltage range | 2.7V to 5.5V - enables direct interface with 2.7V logic and mixed-voltage systems without level shifting |
| Wiper resistance | 400–1000Ω at 2.7V - impacts output impedance and loading error in precision divider applications |
| Active supply current | ≤80µA - allows integration into battery-powered or ultra-low-power sensor front-ends |
| Absolute linearity | ±1 MI (minimum increment = RTOTAL/31) - ensures ≤3.2% full-scale voltage error at any tap position |
| Nonvolatile memory endurance | 100,000 data changes per bit - supports frequent recalibration in field-deployed equipment |
| Operating temperature | –40°C to +85°C - qualified for industrial control, automotive under-hood, and outdoor electronics |
Pinout & Package
Package: 8-lead MSOP (M8.118), body dimensions 3.0mm × 3.0mm × 0.85mm, RoHS-compliant matte tin finish, JEDEC MO-187AA compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Positive supply input | Must be ≥ VH, VL, VW; powers internal logic and resistor array; supports 2.7V–5.5V operation |
| VSS | Ground reference | Return path for all currents; establishes 0V reference for RH/VH, RL/VL, and RW/VW terminals |
| RH/VH | High terminal | Fixed end of resistor array; voltage ranges from VSS to VCC; not polarity-fixed - role depends on U/D state |
| RL/VL | Low terminal | Opposite fixed end; completes resistive path; voltage also spans VSS to VCC |
| RW/VW | Wiper output | Movable tap point; delivers interpolated voltage between RH/VH and RL/VL; series resistance 400–1000Ω at 2.7V |
| CS | Chip select | Active-low enable; storage triggered on rising edge while INC = HIGH; standby entered when CS = HIGH |
| U/D | Direction control | Sets wiper movement direction (up/down) during INC transitions; may be changed dynamically with CS LOW |
| INC | Increment clock | Negative-edge triggered; advances wiper one tap per pulse; timing min. high/low period = 1µs |
Key Features
| Feature | Design Value |
|---|---|
| Nonvolatile wiper position storage | Recalls last setting at power-up - eliminates need for host MCU initialization or external EEPROM |
| 3-wire serial interface | Requires only CS, U/D, and INC - no clock or data lines needed; simplifies PCB routing and GPIO usage |
| Temperature-compensated resistor array | Ratiometric tempco of ±20 ppm/°C - maintains voltage division accuracy across –40°C to +85°C without software compensation |
| Make-before-break wiper switching | Prevents open-circuit glitches during tap transitions - critical for stable biasing in amplifier feedback networks |
| Low 2.7V operation with 80µA active current | Enables direct use with Li-ion single-cell or energy-harvesting power rails while minimizing system quiescent load |
Applications
| Audio Volume Control | Laser Diode Bias Adjustment |
|---|---|
Use Scenario: Digital volume control in portable audio amplifiers where mechanical pot wear and ESD sensitivity are concerns. IC Role / Device Role / Timing Role: Three-terminal voltage divider setting gain of op-amp stage; wiper position updated via microcontroller GPIOs. Use Value: 32-step resolution provides smooth volume transitions; nonvolatile recall restores user-preferred level after power cycle. | Use Scenario: Precision bias current tuning for telecom laser diodes requiring stable optical output over temperature. IC Role / Device Role / Timing Role: Two-terminal variable resistor in LM317-based constant-current source; wiper sets IADJ path resistance. Use Value: ±20 ppm/°C ratiometric tempco ensures <0.2% current drift from –40°C to +85°C; eliminates manual re-trim. |
| ADC Reference Voltage Trimming | Industrial Sensor Signal Conditioning |
Use Scenario: Fine-tuning of reference voltage for 12-bit SAR ADCs in data acquisition modules. IC Role / Device Role / Timing Role: Three-terminal potentiometer dividing VREF to generate adjustable reference; wiper connected to ADC REF+ input. Use Value: Absolute linearity ±1 MI limits reference error to ≤0.03% FS; low 120dBV noise prevents SNR degradation. | Use Scenario: Calibration of offset/gain in 4–20mA transmitter front-ends exposed to wide ambient temperature swings. IC Role / Device Role / Timing Role: Two-terminal variable resistor in instrumentation amplifier gain-setting network; adjusted during factory calibration. Use Value: 100,000-cycle EEPROM endurance supports repeated recalibration; –40°C to +85°C rating matches industrial enclosure specs. |
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 | I²C interface; 64-tap resolution; 10kΩ; 2.7–5.5V; 500nA standby current | Requires I²C bus and pull-up resistors; higher resolution but no native power-up recall without external controller | Choose for systems already using I²C and needing finer adjustment granularity |
| MCP41010-I/P | Serial SPI interface; 257-tap resolution; 10kΩ; 2.7–5.5V; volatile wiper register only | No nonvolatile storage - wiper resets to mid-scale on power-up unless host reloads value | Choose when SPI is preferred and host MCU can manage initialization sequence |
Compared with AD5241BRMZ10 and MCP41010-I/P, the X9315WMI-2.7 offers native power-up recall without firmware intervention, simpler 3-wire control, and superior temperature stability (±20 ppm/°C ratiometric vs. ±100 ppm/°C typical for alternatives), making it optimal for unattended or safety-critical recalibration tasks.
Availability
X9315WMI-2.7 is available at Aetrix Electronics and suitable for industrial sensor calibration, laser diode biasing, audio volume control, and ADC reference trimming requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for X9315WMI-2.7 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 product line delivers solid-state digitally controlled potentiometers optimized for reliability-critical analog trimming in industrial, medical, and communications equipment where mechanical potentiometers fail due to wear, contamination, or vibration.
FAQ
What is the maximum wiper current rating for the X9315WMI-2.7?
The X9315WMI-2.7 has a maximum wiper current rating of ±3.75mA under recommended operating conditions. This limit ensures safe operation within the 10mW maximum power rating and prevents thermal overstress of the internal resistor elements or wiper switches. Exceeding this current may degrade linearity or accelerate wear in the nonvolatile memory cell used for position storage. The X9315WMI-2.7 datasheet specifies this value in the Recommended Operating Conditions table on page 6.
Does the X9315WMI-2.7 retain its wiper position after power cycling?
Yes, the X9315WMI-2.7 retains its wiper position after power cycling because it stores the last programmed value in nonvolatile EEPROM memory. Upon power-up, the device automatically recalls that stored value and positions the wiper accordingly. This behavior is guaranteed across the full –40°C to +85°C operating range and supported by 100-year data retention specification. The X9315WMI-2.7 achieves this without requiring external components or host MCU intervention.
Can the X9315WMI-2.7 operate from a 2.7V supply only, or does it require 5V?
The X9315WMI-2.7 is specifically designed for 2.7V to 5.5V operation, so it functions fully at 2.7V without derating. Its active current remains ≤80µA and wiper resistance is specified at 400–1000Ω under 2.7V conditions. Unlike standard X9315 variants rated for 5V ±10%, the "-2.7" suffix denotes extended low-voltage compatibility - confirmed in the Ordering Information table on page 2 of the FN8179 datasheet for X9315WMI-2.7T2.
What is the meaning of the "WMI" suffix in X9315WMI-2.7?
The "WMI" suffix in X9315WMI-2.7 indicates an 8-lead MSOP package (M8.118), industrial temperature range (–40°C to +85°C), and Pb-free construction. Per the Ordering Information table on page 2 of FN8179, "W" = 10kΩ, "M" = MSOP, "I" = industrial grade, and "-2.7" = 2.7V–5.5V supply range. The marking "AAV" on the physical device further confirms this variant. This distinguishes it from commercial-grade "WMZ" or SOIC-packaged "WSI" versions.
Is the X9315WMI-2.7 pin-compatible with other X9315 variants?
Yes, the X9315WMI-2.7 is pin-compatible with all 8-lead X9315 variants (MSOP, SOIC, PDIP) because they share identical pin configuration and function mapping per the Pin Description table on page 4 of FN8179. All packages expose RH/VH, RL/VL, RW/VW, VCC, VSS, CS, U/D, and INC on the same pin numbers. However, voltage range (e.g., X9315WMZ = 5V-only) and temperature grade differ - so electrical compatibility must be verified per application requirements.
X9315WMI-2.7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- XDCP™
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- 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-2.7 FAQ
1.How can I place an order for X9315WMI-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for X9315WMI-2.7 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-2.7 reliable?
The price and inventory of X9315WMI-2.7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X9315WMI-2.7 is usually 5 days.
3.What payment methods are accepted for X9315WMI-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9315WMI-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9315WMI-2.7?
X9315WMI-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9315WMI-2.7 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-2.7?
For technical support, including X9315WMI-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9315WMI-2.7 requirements.
6.How does Aetrix verify that X9315WMI-2.7 is sourced from the original manufacturer or authorized distributors?
All X9315WMI-2.7 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-2.7 meets industry standards.
7.What is the process for return or replacement of X9315WMI-2.7?
All X9315WMI-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with X9315WMI-2.7, 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-2.7 part is unused and in its original packaging.
Return procedure for X9315WMI-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
X9315WMI-2.7 Tags
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MCP4011T-103E/SN
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