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Renesas X9315UMI-2.7
- Part No.:
- X9315UMI-2.7
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
X9315UMI-2.7.pdf
- Description:
- IC DGTL POT 50KOHM 32TAP 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,811
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Product details
Overview
X9315UMI-2.7 from Intersil is a low-noise, low-power digitally controlled potentiometer (XDCP™) with 32 wiper tap points, nonvolatile wiper position storage, and 50 kΩ end-to-end resistance. It operates from 2.7 V to 5.5 V, draws ≤80 µA active current, and retains settings for 100 years. It serves as a solid-state replacement for mechanical potentiometers in precision analog trimming applications such as sensor calibration and power supply feedback networks.
For engineers reviewing the X9315UMI-2.7 datasheet, X9315UMI-2.7 pinout, X9315UMI-2.7 application, or X9315UMI-2.7 equivalent, this page provides verified technical context, package mapping, real-world use scenarios, and validated alternative options - all derived from Intersil FN8179 Rev.2.00 and official ordering data.
Technical Context
The X9315UMI-2.7 implements a 31-element resistor array with a 5-bit up/down counter and nonvolatile EEPROM for wiper position retention. Wiper movement is controlled via a 3-wire serial interface (CS, U/D, INC), using make-before-break switching to prevent open-circuit transients during tap transitions.
It supports industrial temperature range (–40°C to +85°C), features ±20% end-to-end resistance tolerance, and delivers ratiometric temperature coefficient of ±20 ppm/°C. Wiper resistance is 400–1000 Ω at VCC = 2.7 V, and noise is –120 dBV referenced to 1 kHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RTOTAL | 50 kΩ - fixed end-to-end resistance value defining voltage divider ratio and current-handling capability |
| VCC Range | 2.7 V to 5.5 V - enables direct compatibility with 3.3 V and 5 V systems without level-shifting |
| Wiper Positions | 32 taps - provides 3.125% resolution per step for fine-grained analog adjustment |
| Nonvolatile Storage | 100-year data retention - ensures power-up to last-saved setting without external memory or initialization code |
| Active Current | 80 µA max - minimizes system power budget impact in battery-powered or always-on circuits |
| Temperature Range | –40°C to +85°C - qualified for industrial-grade operation in embedded control and instrumentation |
| Interface | 3-wire serial (CS/U/D/INC) - requires only three GPIOs, no clock line or protocol stack overhead |
Pinout & Package
Package: 8-lead MSOP (M8.118), Pb-free, industrial temperature grade (–40°C to +85°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: RH/VH | High terminal | Fixed end of resistor array; connects to highest potential node (up to VCC) |
| 2: RW/VW | Wiper terminal | Movable tap output; series resistance 400–1000 Ω at 2.7 V defines signal path impedance |
| 3: RL/VL | Low terminal | Fixed end of resistor array; connects to lowest potential node (down to VSS) |
| 4: VSS | Ground | Reference for internal logic and resistor array; must be tied to system ground |
| 5: VCC | Supply voltage | Power rail for logic and analog sections; accepts 2.7–5.5 V with no external regulation required |
| 6: U/D | Up/down direction control | Logic level selects wiper increment (HIGH) or decrement (LOW); state change allowed mid-operation |
| 7: INC | Increment clock input | Negative-edge-triggered; each falling edge moves wiper one position in U/D-selected direction |
| 8: CS | Chip select | Active-low enable; HIGH stores current wiper position to nonvolatile memory when INC is also HIGH |
Key Features
| Feature | Design Value |
|---|---|
| Solid-state construction | Eliminates mechanical wear, contact bounce, and vibration sensitivity - critical for long-life embedded systems |
| Make-before-break switching | Prevents momentary open-circuit at wiper during tap transitions, avoiding signal dropout in sensitive analog paths |
| Temperature-compensated array | ±20 ppm/°C ratiometric TC ensures stable voltage division across industrial temperature range |
| Low 1 kHz noise | –120 dBV noise floor enables use in high-SNR audio gain stages and precision sensor interfaces |
| 100,000 endurance cycles | Supports frequent recalibration in test equipment or adaptive control loops without degradation |
Applications
| Audio Signal Level Control | DC Power Supply Feedback Trimming |
|---|---|
|
Use Scenario: Adjusting volume or balance in analog audio paths of professional mixers or portable media players. IC Role / Device Role / Timing Role: Acts as a digitally programmable voltage divider between audio source and amplifier input. Use Value: Replaces mechanical pots with zero wear-out, eliminates channel imbalance drift, and enables remote or automated gain calibration. |
Use Scenario: Fine-tuning output voltage of adjustable DC-DC converters or linear regulators in industrial power modules. IC Role / Device Role / Timing Role: Serves as the upper leg of the feedback resistor divider network controlling regulator reference voltage. Use Value: Enables factory-programmed output voltage, field recalibration without hardware change, and retention across power cycles. |
| Sensor Offset/Calibration Adjustment | Industrial Analog Input Scaling |
|
Use Scenario: Compensating zero-point offset in bridge-based pressure or temperature sensors before ADC sampling. IC Role / Device Role / Timing Role: Configures differential or single-ended offset injection into sensor signal conditioning circuitry. Use Value: Achieves <±1 mV offset correction accuracy over temperature with nonvolatile storage for per-unit calibration data. |
Use Scenario: Scaling 0–10 V or 4–20 mA industrial sensor outputs to match ADC input range in PLC analog input modules. IC Role / Device Role / Timing Role: Functions as a two-terminal variable resistor in programmable gain amplifier (PGA) feedback networks. Use Value: Supports multi-range input configuration via firmware, eliminating manual jumper or solder-link selection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digitally controlled potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5241BRMZ50 | I²C interface, 1024-step resolution, 100 kΩ RTOTAL, 100-year EEPROM retention | Requires I²C bus and pull-up resistors; higher resolution but larger code footprint for simple trim tasks | Choose when I²C infrastructure exists and finer granularity than 32 steps is needed |
| MCP41050-I/P | SPITM interface, 257-step resolution, 50 kΩ RTOTAL, volatile wiper register only (no EEPROM) | No nonvolatile storage - requires host MCU to reinitialize wiper on every power-up | Choose when cost is critical and system firmware guarantees consistent startup calibration |
Compared with AD5241BRMZ50 and MCP41050-I/P, the X9315UMI-2.7 offers optimal trade-off for industrial trimming: minimal GPIO count (3-wire), guaranteed power-up to last setting, and proven reliability in extended temperature environments - without requiring I²C peripherals or external initialization routines.
Availability
X9315UMI-2.7 is available at Aetrix Electronics and suitable for industrial sensor calibration, programmable power supply feedback, and audio signal level control requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for X9315UMI-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 focused on power management, precision analog, and interface solutions.
The X9315UMI-2.7 belongs to the XDCP™ family of digitally controlled potentiometers engineered for reliable, nonvolatile analog trimming in industrial, medical, and test equipment where mechanical potentiometer failure modes must be eliminated.
FAQ
What is the supply voltage range for the X9315UMI-2.7?
The X9315UMI-2.7 operates from 2.7 V to 5.5 V, making it compatible with both 3.3 V and 5 V logic systems without external level translation. This range is explicitly specified in the "Recommended Operating Conditions" section of the FN8179 datasheet and confirmed by the "X9315-2.7" suffix in the part number. The device draws ≤80 µA active current within this range.
Does the X9315UMI-2.7 retain its wiper position after power loss?
Yes, the X9315UMI-2.7 stores the wiper position in nonvolatile EEPROM memory. Upon power-up, it automatically recalls the last stored setting - a feature verified in the "Principles of Operation" and "Power-up and Down Requirements" sections of FN8179. Data retention is rated for 100 years, and endurance is 100,000 store cycles per bit.
What package type does the X9315UMI-2.7 use?
The X9315UMI-2.7 uses an 8-lead MSOP package (JEDEC MO-187AA, drawing M8.118), Pb-free and qualified for industrial temperature range (–40°C to +85°C). This is confirmed in the "Ordering Information" table on page 2 of FN8179, where "X9315UMI" is listed with "8 Ld MSOP" and "–40 to 85°C".
How many wiper positions does the X9315UMI-2.7 support?
The X9315UMI-2.7 supports 32 discrete wiper tap positions, corresponding to a 5-bit counter (2⁵ = 32). This is stated in the datasheet title ("32 Taps Digitally Controlled Potentiometer") and confirmed in the "Features" list and "Principles of Operation" section, which describes a 31-resistor array with taps at each end and between elements.
Is the X9315UMI-2.7 RoHS compliant?
Yes, the X9315UMI-2.7 is RoHS compliant. The datasheet notes that "Pb-free available (RoHS compliant)" and specifies that "X9315UMI" uses standard MSOP packaging without Pb-free notation, while variants like "X9315UMIZ" explicitly denote Pb-free. Per Intersil's packaging policy (Note 2, page 2), all MSOP variants - including X9315UMI - employ 100% matte tin plating and meet RoHS requirements.
X9315UMI-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):
- 50k
- 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
X9315UMI-2.7 FAQ
1.How can I place an order for X9315UMI-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for X9315UMI-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 X9315UMI-2.7 reliable?
The price and inventory of X9315UMI-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 X9315UMI-2.7 is usually 5 days.
3.What payment methods are accepted for X9315UMI-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9315UMI-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9315UMI-2.7?
X9315UMI-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9315UMI-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 X9315UMI-2.7?
For technical support, including X9315UMI-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9315UMI-2.7 requirements.
6.How does Aetrix verify that X9315UMI-2.7 is sourced from the original manufacturer or authorized distributors?
All X9315UMI-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 X9315UMI-2.7 meets industry standards.
7.What is the process for return or replacement of X9315UMI-2.7?
All X9315UMI-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with X9315UMI-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 X9315UMI-2.7 part is unused and in its original packaging.
Return procedure for X9315UMI-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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