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Renesas X9315UMI-2.7T1
- Part No.:
- X9315UMI-2.7T1
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
X9315UMI-2.7T1.pdf
- Description:
- IC DGTL POT 50KOHM 32TAP 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,091
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Product details
Overview
X9315UMI-2.7T1 from Intersil is a digitally controlled potentiometer (XDCP™) implementing a 31-element resistor array with 32 wiper tap positions, nonvolatile wiper position storage, and 2.7V–5.5V single-supply operation. It functions as a solid-state three-terminal potentiometer or two-terminal variable resistor in analog signal conditioning circuits requiring stable, repeatable resistance trimming under industrial temperature conditions (−40°C to +85°C).
For engineers reviewing the X9315UMI-2.7T1 datasheet, X9315UMI-2.7T1 pinout, X9315UMI-2.7T1 application, or X9315UMI-2.7T1 equivalent, this page delivers verified specifications including 50kΩ end-to-end resistance, 3-wire serial interface timing, wiper resistance at 2.7V, nonvolatile store/reload behavior, and MSOP-8 package mechanical data - all confirmed from Intersil FN8179 Rev.2.00.
Technical Context
The X9315UMI-2.7T1 uses a 5-bit up/down counter driving a decoder that selects one of 32 wiper taps across a monolithic 31-resistor array. Wiper position is controlled via CS (chip select), U/D (direction), and edge-triggered INC inputs, with nonvolatile memory storing the last valid wiper setting on CS↑/INC↑.
It operates in 2.7V–5.5V supply range with active current ≤400µA (store mode) and standby current ≤5µA. The device features make-before-break switching, ±20% end-to-end resistance tolerance, and ratiometric temperature coefficient of ±20ppm/°C - enabling precision voltage division without external calibration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| End-to-end resistance | 50kΩ ±20% - defines full-scale analog adjustment range for voltage divider or current-limiting applications |
| Supply voltage range | 2.7V to 5.5V - supports direct integration into 3.3V and 5V systems without level-shifting |
| Wiper resistance | 400Ω to 1000Ω at 2.7V - impacts minimum achievable output impedance and loading error in buffered configurations |
| Active supply current | ≤400µA during EEPROM store - limits power budget impact during configuration updates |
| Standby current | ≤5µA - enables low-power retention in battery-backed or energy-sensitive systems |
| Temperature range | −40°C to +85°C - qualified for industrial-grade operation without derating |
| Nonvolatile endurance | 100,000 wiper position changes - ensures long-term reliability in field-adjustable equipment |
Pinout & Package
Package: 8-lead MSOP (M8.118), Pb-free, RoHS-compliant, body dimensions 3.0mm × 3.0mm × 0.85mm (JEDEC MO-187AA).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Positive supply input | Must be ≥ VH, VL, VW; powers internal logic and resistor array; 2.7V–5.5V operation |
| VSS | Ground reference | Return path for supply and signal terminals; must be common with system ground |
| RH/VH | High terminal | Fixed end of resistor array; voltage range 0V to VCC; not polarity-referenced to wiper direction |
| RL/VL | Low terminal | Fixed end of resistor array; voltage range 0V to VCC; complementary to RH/VH |
| RW/VW | Wiper terminal | Movable tap point; series resistance 400–1000Ω at 2.7V; outputs interpolated voltage between RH and RL |
| CS | Chip select | Active-low enable; wiper position stored to NV memory on rising edge while INC = HIGH |
| U/D | Up/down control | Sets wiper movement direction (HIGH = increment, LOW = decrement) during INC transitions |
| INC | Increment clock | Negative-edge triggered; advances wiper one tap per valid edge when CS = LOW |
Key Features
| Feature | Design Value |
|---|---|
| 3-wire serial interface | Requires only CS, U/D, and INC signals - eliminates need for SPI/I²C peripherals or address decoding logic |
| Nonvolatile wiper storage | Retains last-set position across power cycles - enables factory calibration and user-presets without external memory |
| Make-before-break switching | Prevents open-circuit transients during wiper stepping - avoids signal dropout in audio or sensor bias paths |
| Temperature-compensated array | ±20ppm/°C ratiometric TC - maintains voltage division accuracy over industrial temperature range |
| Low-power standby mode | 5µA max. quiescent current - suitable for always-on instrumentation with infrequent adjustment |
Applications
| Audio Volume Control | Power Supply Feedback Trim |
|---|---|
|
Use Scenario: Replacing mechanical potentiometers in professional audio mixers requiring remote digital adjustment and preset recall. IC Role / Device Role / Timing Role: Three-terminal voltage divider setting gain of op-amp-based amplifier stages; wiper position updated via microcontroller GPIOs. Use Value: Eliminates mechanical wear and contact noise; retains last volume setting after power cycle; supports 32 discrete, repeatable levels. |
Use Scenario: Fine-tuning output voltage of isolated DC-DC converters in telecom power modules where factory calibration must persist through field replacement. IC Role / Device Role / Timing Role: Two-terminal variable resistor in feedback network of TL431 or similar shunt regulator; adjusts reference voltage ratio. Use Value: Enables post-manufacturing calibration without soldering; 50kΩ value matches typical feedback divider impedances; −40°C to +85°C stability ensures consistent regulation across operating envelope. |
| Sensor Signal Conditioning | Industrial DAC Offset Calibration |
|
Use Scenario: Compensating for offset drift in RTD or thermocouple front-end amplifiers deployed in process control cabinets. IC Role / Device Role / Timing Role: Adjustable voltage reference source feeding instrumentation amplifier common-mode input; wiper adjusted by PLC during commissioning. Use Value: 32-step resolution provides sufficient granularity for <1mV offset correction; nonvolatile storage preserves calibration across maintenance shutdowns. |
Use Scenario: Nulling zero-error in 12-bit DAC output stages used in programmable logic controller (PLC) analog output modules. IC Role / Device Role / Timing Role: Precision two-terminal resistor in summing junction of op-amp offset compensation circuit; adjusted once per unit during test. Use Value: 50kΩ ±20% tolerance allows matching to standard DAC reference networks; MSOP-8 footprint minimizes PCB area vs. trimmer potentiometers. |
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, 64-tap resolution, 100kΩ default RTOTAL, 2.7–5.5V supply | Requires I²C master; higher resolution but no native 50kΩ variant - needs external scaling resistors | Select if I²C bus already present and finer adjustment granularity is required; verify layout compatibility with MSOP-8 footprint |
| MCP41050-I/P | SPIM interface, 257-tap resolution, 50kΩ RTOTAL, 2.7–5.5V supply, volatile wiper register only | No nonvolatile storage - requires host MCU to reload wiper position at power-up | Select if high-resolution trimming is critical and system firmware can manage persistent state; avoid where power-loss recovery is mandatory |
Compared with AD5241BRMZ50 and MCP41050-I/P, the X9315UMI-2.7T1 uniquely combines 50kΩ resistance, 3-wire simplicity, and guaranteed nonvolatile retention - making it optimal for industrial systems needing robust, self-contained analog trimming without protocol overhead or external memory management.
Availability
X9315UMI-2.7T1 is available at Aetrix Electronics and suitable for industrial automation, sensor signal conditioning, and programmable power supply applications requiring stable component supply, extended temperature operation, and field-serviceable calibration.
Supply support for X9315UMI-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 series was developed as a solid-state replacement for mechanical potentiometers in industrial and instrumentation systems demanding reliability, repeatability, and nonvolatile setting retention - with focus on low-noise, low-power, and wide-temperature operation.
FAQ
What is the maximum wiper current rating for the X9315UMI-2.7T1?
The X9315UMI-2.7T1 has a maximum wiper current rating of ±3.75mA under recommended operating conditions. This limit applies regardless of wiper position and must not be exceeded to prevent degradation of wiper resistance or long-term reliability. The device's 10mW maximum power rating and 400–1000Ω wiper resistance at 2.7V further constrain safe operating voltage differentials across the wiper terminal.
Does the X9315UMI-2.7T1 retain its wiper position after power cycling?
Yes, the X9315UMI-2.7T1 stores the wiper position in nonvolatile memory and automatically recalls it upon power-up. This behavior is guaranteed by design: the last valid wiper setting written to memory (via CS↑/INC↑ sequence) persists for up to 100 years and survives unlimited power cycles - eliminating need for initialization routines in host firmware.
Can the X9315UMI-2.7T1 operate from a 3.3V supply?
Yes, the X9315UMI-2.7T1 is fully specified for 2.7V to 5.5V operation, making it compatible with standard 3.3V logic and power domains. At 3.3V, its active current remains ≤400µA (store mode) and standby current ≤5µA; input thresholds scale proportionally, ensuring reliable interface with 3.3V microcontrollers without level shifters.
What is the absolute linearity specification for the X9315UMI-2.7T1?
The X9315UMI-2.7T1 has an absolute linearity specification of ±1 minimum increment (MI), where MI = RTOTAL/31 ≈ 1.61kΩ for the 50kΩ version. This means the actual wiper voltage deviates from ideal by no more than ±1.61kΩ × (VH − VL)/RTOTAL at any tap position - translating to ±1% of full-scale output voltage under matched load conditions.
Is the X9315UMI-2.7T1 RoHS-compliant and lead-free?
Yes, the X9315UMI-2.7T1 is RoHS-compliant and manufactured with 100% matte tin (e3) termination finish. Its MSOP-8 package uses Pb-free molding compounds and die attach materials, and is rated for both SnPb and Pb-free reflow profiles per IPC/JEDEC J-STD-020 - meeting all applicable environmental compliance requirements for industrial electronics.
X9315UMI-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):
- 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-2.7T1 FAQ
1.How can I place an order for X9315UMI-2.7T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for X9315UMI-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 X9315UMI-2.7T1 reliable?
The price and inventory of X9315UMI-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 X9315UMI-2.7T1 is usually 5 days.
3.What payment methods are accepted for X9315UMI-2.7T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9315UMI-2.7T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9315UMI-2.7T1?
X9315UMI-2.7T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9315UMI-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 X9315UMI-2.7T1?
For technical support, including X9315UMI-2.7T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9315UMI-2.7T1 requirements.
6.How does Aetrix verify that X9315UMI-2.7T1 is sourced from the original manufacturer or authorized distributors?
All X9315UMI-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 X9315UMI-2.7T1 meets industry standards.
7.What is the process for return or replacement of X9315UMI-2.7T1?
All X9315UMI-2.7T1 units undergo pre-shipment inspection (PSI). If there is an issue with X9315UMI-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 X9315UMI-2.7T1 part is unused and in its original packaging.
Return procedure for X9315UMI-2.7T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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