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Home > Products > Integrated Circuits (ICs) > Data Acquisition > Digital Potentiometers

Renesas X9315TMI-2.7T1

Name: X9315TMI-2.7T1
Brand: Renesas
SKU: X9315TMI-2.7T1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: X9315TMI-2.7T1

Manufacturer:: Renesas

Category:: Digital Potentiometers

Package:: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)

Datasheet:: X9315TMI-2.7T1.pdf

Description:: IC DGTL POT 100KOHM 32TAP 8MSOP

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Product details

Overview

X9315TMI-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 X9315TMI-2.7T1 datasheet, X9315TMI-2.7T1 pinout, X9315TMI-2.7T1 application, or X9315TMI-2.7T1 equivalent, this page delivers verified specifications including 100 kΩ end-to-end resistance, 5 µA standby current, 3-wire serial interface timing, MSOP-8 package dimensions, and industrial-grade temperature coefficient (±300 ppm/°C) - all confirmed from Intersil FN8179 Rev.2.00.

Technical Context

The X9315TMI-2.7T1 integrates a 5-bit up/down counter, nonvolatile EEPROM for wiper position retention, and a resistor array with make-before-break switching. Its control logic responds to CS (chip select), U/D (direction), and INC (edge-triggered increment) signals to move the wiper across 32 discrete taps without wraparound.

It operates in two primary modes: active wiper adjustment (CS low, INC toggled with U/D set) and nonvolatile store (CS rising edge while INC high). Wiper resistance is 400–1000 Ω at 2.7 V, and total resistance tolerance is ±20% over temperature, with ratiometric TC of ±20 ppm/°C ensuring stable voltage-divider performance.

Key Specifications

Parameter	Value and Actual Design Meaning
End-to-end resistance (R_TOTAL)	100 kΩ ±20% - defines maximum adjustable resistance range and sets gain/scale in voltage divider or bias networks
Supply voltage range	2.7 V to 5.5 V - enables direct compatibility with 3.3 V and 5 V systems without level-shifting
Wiper resolution	32 taps (31 resistive elements) - provides 3.125% step resolution for fine analog tuning
Standby supply current	5 µA max - supports ultra-low-power battery-operated or always-on sensor calibration circuits
Nonvolatile memory endurance	100,000 data changes per bit - ensures long-term reliability in field-updatable trim applications
Temperature range	−40°C to +85°C - qualified for industrial environments including motor controls and instrumentation
Wiper resistance	400–1000 Ω at 2.7 V - impacts loading error in high-impedance feedback paths and must be factored into precision divider design

Pinout & Package

Package: 8-lead MSOP (M8.118), Pb-free, industrial temperature grade (−40°C to +85°C), body dimensions 3.0 mm × 3.0 mm × 0.85 mm.

Pin/Terminal	Circuit Role	Design Meaning
RH/VH	High terminal	Fixed end of resistor array; connects to V_CC or reference voltage; voltage must not exceed V_CC
RL/VL	Low terminal	Fixed end of resistor array; connects to V_SS or ground; voltage must not go below V_SS
RW/VW	Wiper terminal	Movable tap output; series resistance 400–1000 Ω at 2.7 V; used for variable voltage or current sourcing
VSS	Ground	Reference node for all internal logic and analog circuitry; must be low-impedance
VCC	Supply voltage	Single power rail (2.7–5.5 V); powers logic, memory, and resistor array; must ramp ≥0.2 V/ms
U/D	Direction control input	Active-high logic selects wiper increment/decrement direction during INC transitions
INC	Increment clock input	Negative-edge triggered; advances wiper one tap per valid edge when CS is low
CS	Chip select	Active-low enable; rising edge with INC high stores current wiper position to EEPROM

Key Features

Feature	Design Value
Nonvolatile wiper position storage	Retains last-set tap position across power cycles - eliminates startup recalibration in embedded systems
3-wire serial interface	Requires only CS, U/D, and INC signals - minimizes GPIO usage and avoids SPI/I²C peripheral overhead
Make-before-break wiper switching	Prevents open-circuit transients during tap changes - critical for stable biasing in amplifier feedback networks
Temperature-compensated resistor array	±20 ppm/°C ratiometric TC ensures consistent voltage division ratio across −40°C to +85°C
Low-power CMOS design	80 µA active current and 5 µA standby draw - suitable for energy-constrained IoT sensor nodes

Applications

Audio Signal Level Control	Laser Diode Bias Adjustment
Use Scenario: Adjusting gain in programmable audio preamplifiers where manual potentiometers are impractical due to enclosure sealing or remote calibration requirements. IC Role / Device Role / Timing Role: Functions as a digitally trimmed voltage divider in the feedback path of an op-amp, setting precise gain without mechanical wear or contamination risk. Use Value: Enables factory or field calibration via microcontroller command, with retained settings across power loss - eliminating need for external EEPROM or re-trim procedures.	Use Scenario: Fine-tuning bias current for laser diodes in fiber-optic transceivers operating across industrial temperature ranges. IC Role / Device Role / Timing Role: Serves as a two-terminal variable resistor in series with the laser diode cathode, adjusting current magnitude based on thermal drift compensation algorithms. Use Value: Provides 32-step resolution and ±300 ppm/°C absolute TC to maintain optical output stability within ±1% over −40°C to +85°C.
Industrial Sensor Offset Calibration	Programmable Power Supply Reference
Use Scenario: Compensating zero-point offset in strain gauge or RTD signal conditioning circuits deployed in factory automation equipment. IC Role / Device Role / Timing Role: Configured as a three-terminal potentiometer to inject calibrated offset voltage into the input stage of an instrumentation amplifier. Use Value: Delivers 100 kΩ range and nonvolatile storage so each sensor channel retains its unique calibration value after system reboot or maintenance cycle.	Use Scenario: Setting adjustable reference voltage for DC-DC converter feedback loops in programmable lab power supplies. IC Role / Device Role / Timing Role: Acts as a precision voltage divider between V_CC and ground, feeding the ADJ pin of an adjustable regulator (e.g., LM317). Use Value: Supports 2.7 V–5.5 V operation and stores user-defined output voltage presets - enabling recall of multiple output levels without hardware modification.

Audio Signal Level Control

Laser Diode Bias Adjustment

Use Scenario: Adjusting gain in programmable audio preamplifiers where manual potentiometers are impractical due to enclosure sealing or remote calibration requirements.

IC Role / Device Role / Timing Role: Functions as a digitally trimmed voltage divider in the feedback path of an op-amp, setting precise gain without mechanical wear or contamination risk.

Use Value: Enables factory or field calibration via microcontroller command, with retained settings across power loss - eliminating need for external EEPROM or re-trim procedures.

Use Scenario: Fine-tuning bias current for laser diodes in fiber-optic transceivers operating across industrial temperature ranges.

IC Role / Device Role / Timing Role: Serves as a two-terminal variable resistor in series with the laser diode cathode, adjusting current magnitude based on thermal drift compensation algorithms.

Use Value: Provides 32-step resolution and ±300 ppm/°C absolute TC to maintain optical output stability within ±1% over −40°C to +85°C.

Industrial Sensor Offset Calibration

Programmable Power Supply Reference

Use Scenario: Compensating zero-point offset in strain gauge or RTD signal conditioning circuits deployed in factory automation equipment.

IC Role / Device Role / Timing Role: Configured as a three-terminal potentiometer to inject calibrated offset voltage into the input stage of an instrumentation amplifier.

Use Value: Delivers 100 kΩ range and nonvolatile storage so each sensor channel retains its unique calibration value after system reboot or maintenance cycle.

Use Scenario: Setting adjustable reference voltage for DC-DC converter feedback loops in programmable lab power supplies.

IC Role / Device Role / Timing Role: Acts as a precision voltage divider between V_CC and ground, feeding the ADJ pin of an adjustable regulator (e.g., LM317).

Use Value: Supports 2.7 V–5.5 V operation and stores user-defined output voltage presets - enabling recall of multiple output levels without hardware modification.

Equivalent & Alternatives

The following parts are listed as comparable options for similar digitally controlled potentiometer applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
AD5241BRMZ100	100 kΩ, I²C interface, 128-tap resolution, 2.7–5.5 V, ±30% R_TOTAL tolerance	Higher resolution but lacks nonvolatile store on power-up; requires host MCU to reload wiper position after reset	Select when I²C bus availability and finer adjustment granularity outweigh need for automatic power-up restore
MCP41HV51-103	10 kΩ, SPI interface, 257-tap resolution, 4.5–18 V supply, ±20% R_TOTAL, volatile wiper register	Wider voltage range and higher resolution, but no EEPROM - requires continuous host control or external nonvolatile backup	Choose for high-voltage analog front-ends where 10 kΩ range and SPI compatibility are prioritized over autonomous startup behavior

Compared with AD5241BRMZ100 and MCP41HV51-103, the X9315TMI-2.7T1 uniquely combines industrial temperature rating, guaranteed nonvolatile power-up restore, and minimal 3-wire control - reducing firmware complexity and eliminating external memory in self-contained calibration systems.

Availability

X9315TMI-2.7T1 is available at Aetrix Electronics and suitable for industrial sensor calibration, laser diode biasing, programmable power supply references, and audio signal level control requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for X9315TMI-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) is a semiconductor manufacturer specializing in precision analog, power management, and interface ICs for industrial, aerospace, and communications markets.

The X9315 product line was designed as a solid-state replacement for mechanical potentiometers in systems demanding long-term reliability, digital programmability, and nonvolatile setting retention - targeting instrumentation, telecom infrastructure, and factory automation.

FAQ

What is the supply voltage range for the X9315TMI-2.7T1?

The X9315TMI-2.7T1 operates from 2.7 V to 5.5 V, supporting both 3.3 V and 5 V logic systems without external regulation. This range is explicitly defined in the Ordering Information table and Recommended Operating Conditions section of the FN8179 datasheet. The "-2.7" suffix denotes this extended low-voltage capability, distinct from standard 5 V-only variants.

Does the X9315TMI-2.7T1 retain its wiper position after power cycling?

Yes, the X9315TMI-2.7T1 stores the wiper position in nonvolatile EEPROM memory. Upon power-up, it automatically recalls the last stored value and configures the wiper accordingly. This behavior is guaranteed by the device architecture and confirmed in the Principles of Operation and Power-up and Down Requirements sections of the FN8179 datasheet.

What package type is used for the X9315TMI-2.7T1?

The X9315TMI-2.7T1 uses an 8-lead MSOP package (JEDEC MO-187AA, drawing M8.118), with Pb-free terminations and industrial temperature rating (−40°C to +85°C). This is unambiguously specified in the Ordering Information table under the row for X9315TMI-2.7T1, and the mechanical dimensions are detailed on page 13 of FN8179 Rev.2.00.

How many wiper tap positions does the X9315TMI-2.7T1 provide?

The X9315TMI-2.7T1 provides 32 discrete wiper tap positions, corresponding to a 31-element resistor array. This is stated in the device title ("32 Taps Digitally Controlled Potentiometer") and confirmed in the Block Diagram, Pin Description, and Principles of Operation sections of FN8179 Rev.2.00.

What is the end-to-end resistance value of the X9315TMI-2.7T1?

The X9315TMI-2.7T1 has a nominal end-to-end resistance (R_TOTAL) of 100 kΩ, with a tolerance of ±20% over temperature. This value is explicitly listed in the Ordering Information table for part number X9315TMI-2.7T1 and verified in the Potentiometer Characteristics table on page 6 of FN8179 Rev.2.00.

X9315TMI-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):: 100k

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

X9315TMI-2.7T1 FAQ

1.How can I place an order for X9315TMI-2.7T1 through Aetrix?

Please submit a Request for Quotation (RFQ) for X9315TMI-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 X9315TMI-2.7T1 reliable?

The price and inventory of X9315TMI-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 X9315TMI-2.7T1 is usually 5 days.

3.What payment methods are accepted for X9315TMI-2.7T1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9315TMI-2.7T1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for X9315TMI-2.7T1?

X9315TMI-2.7T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your X9315TMI-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 X9315TMI-2.7T1?

For technical support, including X9315TMI-2.7T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9315TMI-2.7T1 requirements.

6.How does Aetrix verify that X9315TMI-2.7T1 is sourced from the original manufacturer or authorized distributors?

All X9315TMI-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 X9315TMI-2.7T1 meets industry standards.

7.What is the process for return or replacement of X9315TMI-2.7T1?

All X9315TMI-2.7T1 units undergo pre-shipment inspection (PSI). If there is an issue with X9315TMI-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 X9315TMI-2.7T1 part is unused and in its original packaging.

Return procedure for X9315TMI-2.7T1:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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