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Renesas X9315TMI-2.7
- Part No.:
- X9315TMI-2.7
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
X9315TMI-2.7.pdf
- Description:
- IC DGTL POT 100KOHM 32TAP 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,586
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Product details
Overview
X9315TMI-2.7 from Intersil is a digitally controlled potentiometer (XDCP™) implementing a 31-element resistor array with 32 wiper tap positions, nonvolatile memory for power-up recall, and 3-wire serial interface (CS/U/D/INC). It operates from 2.7V to 5.5V, offers 100kΩ end-to-end resistance, ±20% tolerance, and −40°C to +85°C industrial temperature range. It serves as a solid-state replacement for mechanical potentiometers in precision analog trimming circuits.
For engineers reviewing the X9315TMI-2.7 datasheet, X9315TMI-2.7 pinout, X9315TMI-2.7 application, or X9315TMI-2.7 equivalent, key selection criteria include its 100kΩ RTOTAL value, MSOP-8 package with verified 8-pin terminal mapping, guaranteed nonvolatile wiper position retention over 100 years, and compatibility with low-voltage 2.7V systems requiring stable analog adjustment without external EEPROM.
Technical Context
The X9315TMI-2.7 integrates a 5-bit up/down counter, nonvolatile memory storage circuitry, and a resistor array with make-before-break wiper switching. Its control logic responds to CS (chip select), U/D (direction), and edge-triggered INC (increment) inputs to move the wiper across 32 discrete taps.
Wiper position is stored in EEPROM when CS transitions high while INC is high, enabling automatic restoration on power-up. The device supports ratiometric operation with VH/VL terminals referenced to VCC/VSS, and exhibits ±300 ppm/°C total resistance temperature coefficient and −120 dBV noise performance at 1 kHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RTOTAL | 100kΩ ±20% - defines full-scale resistance range for voltage divider or current-limiting configurations |
| Supply Voltage Range | 2.7V to 5.5V - enables direct interface with 2.7V logic and mixed-voltage systems without level shifting |
| Wiper Tap Count | 32 positions - provides 3.125% resolution per step for fine analog parameter tuning |
| 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 environments including motor controls and sensor signal conditioning |
| Active Supply Current | 80µA max at VCC = 2.7V - minimizes system power budget in battery-backed or energy-sensitive applications |
| Standby Current | 5µA max - allows indefinite retention of wiper state during sleep modes |
Pinout & Package
Package: 8-lead MSOP (M8.118), body dimensions 3.0mm × 3.0mm × 0.85mm, RoHS-compliant matte tin termination, JEDEC MO-187BA 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 internal currents; establishes 0V reference for RH/VH and RL/VL terminals |
| RH/VH | High terminal | Fixed end of resistor array; voltage ranges from VSS to VCC; not polarity-referenced to wiper direction |
| RL/VL | Low terminal | Opposite fixed end; completes three-terminal potentiometer configuration; same voltage range as RH/VH |
| RW/VW | Wiper output | Movable contact point; series resistance 400–1000Ω at 2.7V; connects to one of 32 tap points via decoded counter |
| CS | Chip select | Active-low enable; initiates wiper movement when low; triggers EEPROM store on rising edge with INC = high |
| U/D | Direction control | Sets wiper increment/decrement direction; valid only when CS = low; no effect during standby |
| INC | Increment clock | Negative-edge triggered; advances wiper position when CS = low; edge timing tCYC ≥ 4µs required |
Key Features
| Feature | Design Value |
|---|---|
| Nonvolatile wiper storage | Retains last-set position across power cycles for deterministic startup behavior without host reinitialization |
| Make-before-break wiper switching | Prevents open-circuit transients during tap transitions, critical for stable biasing in amplifier feedback networks |
| Temperature-compensated resistor array | ±20% end-to-end resistance tolerance maintained over −40°C to +85°C, reducing calibration drift in thermal environments |
| Low-power CMOS architecture | 80µA active current at 2.7V enables integration into always-on sensor nodes and portable instrumentation |
| Ratiometric operation | VH/VL voltages constrained to 0–VCC range ensures predictable divider ratios independent of absolute supply variation |
Applications
| Laser Diode Bias Control | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Precise adjustment of laser diode forward current in fiber-optic transceivers to maintain constant optical output power. IC Role / Device Role / Timing Role: Two-terminal variable resistor setting gain in a current-sense amplifier loop, with wiper position stored to retain calibration after hot-swap events. Use Value: Eliminates manual potentiometer re-trimming during field maintenance; 100kΩ RTOTAL matches typical sense-resistor ranges for 10–100mA laser drive currents. | Use Scenario: Calibration of offset and gain in bridge-based pressure or strain sensors operating in wide-temperature industrial enclosures. IC Role / Device Role / Timing Role: Three-terminal potentiometer in op-amp inverting amplifier feedback network, providing programmable gain scaling with factory-set defaults recalled on power-up. Use Value: −40°C to +85°C rating ensures stable trim across ambient extremes; ±300 ppm/°C TC avoids recalibration drift in uncontrolled environments. |
| Programmable Power Supply Reference | Audio Equipment Channel Balancing |
Use Scenario: Dynamic adjustment of output voltage setpoint in isolated DC-DC converters used in test equipment and lab power supplies. IC Role / Device Role / Timing Role: Voltage divider between VCC and VSS feeding adjustable reference input of TL431 or similar shunt regulator, with digital control via microcontroller GPIOs. Use Value: 2.7V minimum supply allows direct use with low-dropout regulators; nonvolatile memory preserves user-selected voltage presets across AC power interruptions. | Use Scenario: Independent left/right channel volume or tone balance control in professional audio mixers with digital front-panel interface. IC Role / Device Role / Timing Role: Dual-channel implementation using two X9315TMI-2.7 devices as grounded-terminal variable resistors in analog attenuator stages. Use Value: 32-tap resolution enables smooth, click-free attenuation steps; low −120 dBV noise prevents audible hiss in high-gain preamp paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digitally controlled potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5243BRMZ100 | I²C interface, dual-channel, 100kΩ, 256-tap resolution, 2.7–5.5V supply | Requires I²C master; higher resolution but no native nonvolatile recall on power-up without external controller intervention | Select when multi-channel coordination or finer resolution is prioritized over autonomous power-up behavior |
| MCP41HV51-104E/SN | Single-channel SPI interface, 100kΩ, 257-tap resolution, 4.5–18V high-voltage operation | Supports >5.5V analog rails but lacks guaranteed 2.7V compatibility; requires external SPI host and EEPROM management | Select for high-voltage analog systems where 2.7V operation is not required and SPI infrastructure already exists |
Compared with AD5243BRMZ100 and MCP41HV51-104E/SN, the X9315TMI-2.7 delivers autonomous power-up behavior without host firmware involvement, simpler 3-wire control timing, and guaranteed 2.7V functionality-making it optimal for cost-sensitive, low-pin-count industrial designs requiring deterministic analog initialization.
Availability
X9315TMI-2.7 is available at Aetrix Electronics and suitable for industrial sensor calibration, laser diode biasing, and programmable power supply reference applications requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for X9315TMI-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 industrial, communications, and computing markets.
The X9315 product line delivers digitally controlled potentiometers optimized for replacing mechanical trimmers in precision analog circuits where reliability, nonvolatility, and low-voltage operation are essential.
FAQ
What is the maximum wiper current rating for the X9315TMI-2.7?
The X9315TMI-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 degradation of the 31-element resistor array or wiper switch contacts. Exceeding this current may cause irreversible resistance drift or open-circuit failure. The wiper resistance itself varies from 400Ω to 1000Ω at 2.7V, further constraining allowable voltage differentials across RW/VW.
Does the X9315TMI-2.7 require an external clock or microcontroller to retain wiper position after power loss?
No, the X9315TMI-2.7 does not require external components to retain wiper position. Its integrated nonvolatile memory stores the last wiper setting automatically when CS transitions high while INC is high, and recalls that value on subsequent power-up. This autonomous behavior is intrinsic to the X9315TMI-2.7 design and eliminates dependency on host firmware or external EEPROM, making it ideal for standalone analog subsystems.
Can the X9315TMI-2.7 operate reliably at 2.7V supply while maintaining full 32-tap functionality?
Yes, the X9315TMI-2.7 is fully specified for 2.7V to 5.5V operation and maintains all 32 wiper tap positions, 100kΩ RTOTAL, and functional timing parameters-including tCYC ≥ 4µs and tIW ≤ 5µs-at 2.7V. The datasheet explicitly lists "X9315-2.7" variants with VCC limits of 2.7V to 5.5V, and electrical tests confirm active current (80µA max) and wiper resistance (400–1000Ω) performance at this minimum voltage.
How does the make-before-break wiper switching in the X9315TMI-2.7 improve system stability?
The make-before-break wiper switching in the X9315TMI-2.7 prevents momentary open circuits during tap transitions by briefly connecting two adjacent resistor elements to RW/VW. This eliminates voltage glitches in feedback loops-such as those found in op-amp gain-setting networks or voltage reference dividers-and avoids disruptive current interruptions in bias paths like laser diode drivers. The feature is inherent to the X9315TMI-2.7's internal switch matrix and requires no external circuitry.
Is the X9315TMI-2.7 RoHS-compliant and compatible with lead-free reflow processes?
Yes, the X9315TMI-2.7 is RoHS-compliant and features 100% matte tin plate (e3 termination finish) compatible with both SnPb and Pb-free soldering operations. Its MSOP-8 package meets JEDEC MO-187BA standards and is rated for Pb-free peak reflow temperatures per IPC/JEDEC J-STD-020. The device is classified per MSL level appropriate for its package type, and full reflow profile details are available on the manufacturer's Pb-Free Reflow webpage.
X9315TMI-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):
- 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-2.7 FAQ
1.How can I place an order for X9315TMI-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for X9315TMI-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 X9315TMI-2.7 reliable?
The price and inventory of X9315TMI-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 X9315TMI-2.7 is usually 5 days.
3.What payment methods are accepted for X9315TMI-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9315TMI-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9315TMI-2.7?
X9315TMI-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9315TMI-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 X9315TMI-2.7?
For technical support, including X9315TMI-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9315TMI-2.7 requirements.
6.How does Aetrix verify that X9315TMI-2.7 is sourced from the original manufacturer or authorized distributors?
All X9315TMI-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 X9315TMI-2.7 meets industry standards.
7.What is the process for return or replacement of X9315TMI-2.7?
All X9315TMI-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with X9315TMI-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 X9315TMI-2.7 part is unused and in its original packaging.
Return procedure for X9315TMI-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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