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Renesas X9315UMT1
- Part No.:
- X9315UMT1
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
X9315UMT1.pdf
- Description:
- IC DGTL POT 50KOHM 32TAP 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,118
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Product details
Overview
X9315UMT1 from Intersil is a digitally controlled potentiometer (XDCP™) implementing a 31-element resistor array with 32 discrete wiper tap positions, nonvolatile wiper position storage, and 3-wire serial interface (CS/U/D/INC). It functions as a solid-state replacement for mechanical potentiometers in precision analog trimming applications requiring stable resistance values across temperature and time, such as sensor calibration and power supply feedback networks.
For engineers reviewing the X9315UMT1 datasheet, X9315UMT1 pinout, X9315UMT1 application, or X9315UMT1 equivalent, this page provides verified specifications including 50kΩ end-to-end resistance, ±20% tolerance, 5V operation, 80µA active current, and MSOP-8 package compatibility - all critical for layout, firmware integration, and long-term reliability validation.
Technical Context
The X9315UMT1 uses a 5-bit up/down counter driving a decoder to select one of 32 wiper positions across a monolithic resistor ladder. Wiper movement is controlled by edge-triggered INC input synchronized with U/D direction logic, and CS enables selection and nonvolatile store operations.
Its resistor array features temperature-compensated elements with ±300 ppm/°C total resistance TC and ±20 ppm/°C ratiometric TC, while wiper resistance is 200Ω (typ.) at VCC = 5V. The device operates in make-before-break switching mode during tap transitions, ensuring continuity but temporarily reducing effective RTOTAL during multi-step moves.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| End-to-end resistance | 50kΩ ±20% - defines full-scale analog range for voltage divider or variable resistor use |
| Wiper resolution | 32 taps (0–31) - enables 3.125% step granularity across full resistance range |
| Supply voltage | 5V ±10% - compatible with standard 5V logic and analog rails; no 2.7V variant |
| Active supply current | 80µA max - supports low-power embedded systems with infrequent adjustment cycles |
| Standby current | 5µA max - enables battery-backed or always-on trim applications without significant drain |
| Nonvolatile memory endurance | 100,000 write cycles - ensures reliable field recalibration over product lifetime |
| Data retention | 100 years - guarantees wiper position persistence across decades of storage or shelf life |
Pinout & Package
Package: 8-lead MSOP (Moisture Sensitivity Level 1, Pb-free, JEDEC MO-187BA compliant; dimensions per M8.118 drawing).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Positive supply rail | Must be ≥ VH, VL, VW; powers internal logic and resistor array; 5V ±10% nominal |
| VSS | Ground reference | Return path for supply and signal currents; must be common with system ground |
| RH/VH | High terminal | Fixed end of resistor array; voltage range 0 to VCC; not polarity-referenced to wiper |
| RL/VL | Low terminal | Fixed end of resistor array; voltage range 0 to VCC; relative label depends on U/D state |
| RW/VW | Wiper terminal | Movable tap point; series resistance 200Ω (typ.) at 5V; connects to one of 32 nodes |
| CS | Chip Select | Active-low enable; HIGH initiates nonvolatile store when INC is also HIGH |
| U/D | Up/Down control | Sets wiper increment/decrement direction during next INC transition |
| INC | Increment clock | Negative-edge triggered; toggles wiper position in U/D-defined direction |
Key Features
| Feature | Design Value |
|---|---|
| Nonvolatile wiper storage | Retains last set position across power cycles - eliminates startup drift in closed-loop systems |
| Temperature-compensated resistor array | ±300 ppm/°C RTOTAL TC and ±20 ppm/°C ratiometric TC - maintains voltage division accuracy over -40°C to +85°C |
| Make-before-break wiper switching | Prevents open-circuit transients during tap changes - critical for stable biasing in amplifier feedback paths |
| Low-noise performance | -120 dBV (ref 1 kHz) - suitable for audio and precision sensor signal conditioning without added noise floor |
| 3-wire serial interface | No external clock or data lines required - simplifies MCU GPIO usage and reduces BOM count vs. SPI/I²C alternatives |
Applications
| Audio Volume Control | Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Digital volume adjustment in line-level audio amplifiers with user interface or auto-calibration. IC Role / Device Role / Timing Role: Two-terminal variable resistor in gain-setting network of op-amp-based amplifier stage. Use Value: Eliminates mechanical wear and contact noise; retains last volume setting after power loss. |
Use Scenario: Calibration of offset/gain in bridge-based pressure or temperature sensor front-ends. IC Role / Device Role / Timing Role: Three-terminal potentiometer in Wheatstone bridge nulling or amplifier feedback loop. Use Value: Enables factory or field recalibration without hardware modification; ±20 ppm/°C ratiometric TC preserves accuracy across operating temperature. |
| Power Supply Feedback Trimming | Industrial DAC Output Scaling |
|
Use Scenario: Fine-tuning output voltage of adjustable DC-DC converters or linear regulators. IC Role / Device Role / Timing Role: Adjustable voltage divider between VOUT and FB pin of voltage-mode controller IC. Use Value: Provides stable, repeatable trim with 100-year data retention - avoids manual re-trim during maintenance or firmware updates. |
Use Scenario: Scaling full-scale output of 12-bit DACs to match actuator or ADC input ranges in PLC modules. IC Role / Device Role / Timing Role: Precision two-terminal resistor in DAC output buffer gain stage. Use Value: 50kΩ ±20% tolerance and 3% resolution support 0.1% system-level scaling accuracy when combined with matched external components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digitally controlled potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5243BRMZ50 | I²C interface, dual-channel, 256-tap resolution, 50kΩ, ±30% RTOTAL tolerance | Requires I²C host; higher resolution but looser resistance tolerance affects absolute voltage accuracy | Select for multi-channel trimming or when I²C infrastructure already exists; avoid where 5V-only operation and tight RTOTAL tolerance are mandatory |
| MCP41050-I/P | SPITM interface, single-channel, 257-tap resolution, 50kΩ, ±20% RTOTAL, 2.7–5.5V supply | Wider VCC range enables 3.3V systems; SPI requires more GPIOs than 3-wire XDCP protocol | Select for 3.3V designs or when SPI is preferred; verify timing compatibility with host MCU's SPI peripheral |
Compared with AD5243BRMZ50 and MCP41050-I/P, the X9315UMT1 offers simpler 3-wire control, guaranteed 5V operation, and superior ratiometric temperature stability - making it optimal for cost-sensitive, single-channel, high-stability analog trimming in industrial 5V systems.
Availability
X9315UMT1 is available at Aetrix Electronics and suitable for sensor calibration, power supply feedback trimming, and audio volume control requiring stable component supply, long-term parameter retention, and RoHS-compliant packaging.
Supply support for X9315UMT1 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) is a semiconductor manufacturer specializing in precision analog, power management, and interface ICs for industrial, communications, and computing markets.
The X9315UMT1 belongs to Intersil's XDCP™ family of digitally controlled potentiometers, designed specifically for replacing mechanical trimpots in applications demanding nonvolatile storage, temperature stability, and low-power digital control.
FAQ
What is the operating temperature range for the X9315UMT1?
The X9315UMT1 is rated for industrial temperature operation from -40°C to +85°C. This range is confirmed in the Ordering Information table on page 2 of FN8179 Rev. 2.00, where X9315UMI, X9315UMIT1, X9315UMIZ, and X9315UMIZT1 variants are explicitly listed with -40°C to +85°C specification. As X9315UMT1 shares the same MSOP-8 package and 50kΩ resistance value, it inherits this industrial-grade thermal rating.
Does the X9315UMT1 support 3.3V operation?
No, the X9315UMT1 does not support 3.3V operation. Per the Recommended Operating Conditions on page 6 of FN8179 Rev. 2.00, the X9315 (non-"-2.7" suffix) variant has a VCC limit of 5V ±10%, i.e., 4.5V to 5.5V. The "-2.7" suffix variants (e.g., X9315UMZ-2.7) are the only versions specified for 2.7V–5.5V operation. X9315UMT1 lacks this suffix and is strictly a 5V device.
How is wiper position stored and recalled in the X9315UMT1?
Wiper position is stored in nonvolatile EEPROM memory when CS transitions HIGH while INC is held HIGH. Upon power-up, the X9315UMT1 automatically recalls the last stored value and sets the wiper to that tap position. This behavior is documented in the Principles of Operation section (page 4) and confirmed in the Mode Selection table (page 5), where "Store wiper position to nonvolatile memory" is triggered by CS HIGH + INC HIGH.
What is the maximum allowable voltage across RH/VH and RL/VL terminals of the X9315UMT1?
The maximum differential voltage ΔV = |VH – VL| is 5V, as specified in the Absolute Maximum Ratings table on page 6 of FN8179 Rev. 2.00. Additionally, VH and VL must each remain within 0V to VCC (5V), and VCC must always be ≥ VH, VL, and VW. Exceeding 5V across the end terminals risks permanent damage to the resistor array.
Is the X9315UMT1 pin-compatible with other X9315 variants in MSOP-8 packages?
Yes, the X9315UMT1 is pin-compatible with all other X9315 variants offered in the 8-lead MSOP package (e.g., X9315WMZT1, X9315UMIZT1), as confirmed by the unified Pin Configuration diagram on page 4 and identical pin descriptions across ordering entries. All share the same pinout: VCC, CS, INC, U/D, RH/VH, VSS, RL/VL, RW/VW - enabling direct PCB footprint reuse across resistance values and temperature grades.
X9315UMT1 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):
- 50k
- 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
X9315UMT1 FAQ
1.How can I place an order for X9315UMT1 through Aetrix?
Please submit a Request for Quotation (RFQ) for X9315UMT1 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 X9315UMT1 reliable?
The price and inventory of X9315UMT1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X9315UMT1 is usually 5 days.
3.What payment methods are accepted for X9315UMT1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9315UMT1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9315UMT1?
X9315UMT1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9315UMT1 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 X9315UMT1?
For technical support, including X9315UMT1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9315UMT1 requirements.
6.How does Aetrix verify that X9315UMT1 is sourced from the original manufacturer or authorized distributors?
All X9315UMT1 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 X9315UMT1 meets industry standards.
7.What is the process for return or replacement of X9315UMT1?
All X9315UMT1 units undergo pre-shipment inspection (PSI). If there is an issue with X9315UMT1, 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 X9315UMT1 part is unused and in its original packaging.
Return procedure for X9315UMT1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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