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Renesas X9315TMT1
- Part No.:
- X9315TMT1
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
X9315TMT1.pdf
- Description:
- IC DGTL POT 100KOHM 32TAP 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,762
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Product details
Overview
X9315TMT1 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 operates at 2.7V to 5.5V, delivers ±20% end-to-end resistance tolerance, and supports industrial temperature range (–40°C to +85°C) in an 8-lead SOIC package. It functions as a solid-state replacement for mechanical potentiometers in precision analog trimming applications.
For engineers reviewing the X9315TMT1 datasheet, X9315TMT1 pinout, X9315TMT1 application, or X9315TMT1 equivalent, this page provides verified technical context, confirmed pin functionality, real-world use cases in signal conditioning and parameter calibration, and validated alternative options for design continuity.
Technical Context
The X9315TMT1 integrates a 5-bit up/down counter, nonvolatile memory for wiper position retention, and a resistor array with make-before-break switching. Its control logic responds to negative-edge-triggered INC pulses while direction is set by U/D level, and stores position on CS↑ with INC HIGH.
It features temperature-compensated resistive elements (±300 ppm/°C RTOTAL TC), low-noise operation (–120 dBV @ 1 kHz), and wiper resistance of 200 Ω (typ.) at VCC = 5V. The device maintains wiper position across power cycles and supports both three-terminal potentiometer and two-terminal variable resistor configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| End-to-end resistance | 100 kΩ ±20% - defines full-scale analog adjustment range and load interaction in voltage divider circuits |
| Wiper tap resolution | 32 positions - enables 3.125% step granularity for fine analog tuning |
| Supply voltage range | 2.7 V to 5.5 V - supports dual-rail compatibility with 3.3 V and 5 V systems without level-shifting |
| Active supply current | 80 µA max - ensures ultra-low power consumption during active wiper adjustment |
| Nonvolatile store time | 5–10 ms - determines minimum CS pulse width required to reliably save wiper position to EEPROM |
| Wiper resistance | 200 Ω typ. at 5 V - impacts signal integrity and loading error in high-impedance feedback paths |
| Temperature range | –40°C to +85°C - qualifies for industrial-grade embedded control and sensor interface designs |
Pinout & Package
Package: 8-lead narrow-body SOIC (JEDEC MS-012-AA), Pb-free, RoHS compliant, 3.90 mm × 4.90 mm footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Positive supply input | Must be ≥ VH, VL, VW; powers internal logic and resistor array; 2.7–5.5 V operating range |
| VSS | Ground reference | Return path for all internal circuitry and external analog connections |
| RH/VH | High terminal | Fixed end of resistor array; voltage range 0 to VCC; used as top rail in voltage divider |
| RL/VL | Low terminal | Fixed end of resistor array; voltage range 0 to VCC; used as bottom rail in voltage divider |
| RW/VW | Wiper output | Movable tap point; connects to one of 32 positions; series resistance ~200 Ω at 5 V |
| CS | Chip select | Active-low enable; initiates wiper movement when LOW; triggers nonvolatile store on rising edge with INC HIGH |
| U/D | Direction control | Sets wiper increment/decrement direction; sampled synchronously with INC edge |
| INC | Increment clock | Negative-edge-triggered; advances wiper one position per valid edge when CS is LOW |
Key Features
| Feature | Design Value |
|---|---|
| Nonvolatile wiper storage | Retains last position across power cycles for repeatable startup behavior without host reinitialization |
| Make-before-break switching | Prevents open-circuit transients during wiper movement, avoiding signal glitches in sensitive analog paths |
| Low-noise performance | –120 dBV typical noise floor enables use in audio gain control and precision sensor signal conditioning |
| Temperature-compensated array | ±300 ppm/°C RTOTAL drift minimizes calibration drift over industrial temperature range |
| Ultra-low standby current | 5 µA max standby draw extends battery life in portable or always-on monitoring systems |
Applications
| Laser Diode Bias Control | Audio Volume Adjustment |
|---|---|
Use Scenario: Precise DC bias current setting for laser diodes in fiber-optic transceivers requiring stable optical output power. IC Role / Device Role / Timing Role: Two-terminal variable resistor in constant-current source feedback loop, replacing mechanical trimmer for long-term stability. Use Value: Nonvolatile storage ensures consistent laser bias after power cycling; ±20% RTOTAL tolerance accommodates process variation without calibration overhead. |
Use Scenario: Digital volume control in consumer audio amplifiers where mechanical pot wear and channel imbalance are unacceptable. IC Role / Device Role / Timing Role: Three-terminal potentiometer configured as voltage divider feeding op-amp inverting input for attenuation. Use Value: –120 dBV noise floor prevents audible hiss; 32-tap resolution enables smooth, click-free volume transitions. |
| Sensor Offset Calibration | Power Supply Feedback Trim |
Use Scenario: Factory-trimmed offset compensation for bridge-based pressure sensors in industrial instrumentation. IC Role / Device Role / Timing Role: Two-terminal variable resistor in Wheatstone bridge leg, adjusted once during production and stored nonvolatily. Use Value: 100-year data retention guarantees calibration integrity over product lifetime; ±300 ppm/°C TC limits thermal drift to <0.5% over –40°C to +85°C. |
Use Scenario: Programmable output voltage setting in adjustable DC-DC converters for multi-rail embedded systems. IC Role / Device Role / Timing Role: Three-terminal potentiometer in feedback divider network of voltage regulator IC. Use Value: 100 kΩ RTOTAL minimizes regulator quiescent current impact; 8-lead SOIC fits standard PCB footprints without redesign. |
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, 256-tap resolution, 100 kΩ nominal, ±30% RTOTAL tolerance | Requires I²C host support; higher resolution but looser resistance tolerance affects absolute accuracy | Select when dual independent pots or I²C bus integration is required; verify tolerance impact on closed-loop stability |
| MCP41010-I/P | Serial SPI interface, single-channel, 256-tap resolution, 10 kΩ nominal, volatile wiper register only | No nonvolatile storage; requires host reinitialization at power-up; lower RTOTAL increases current draw in voltage dividers | Choose for cost-sensitive, SPI-based systems where startup repeatability is managed externally |
Compared with AD5243BRMZ100 and MCP41010-I/P, the X9315TMT1 offers guaranteed nonvolatile retention, simpler 3-wire protocol, and industrial temperature rating-making it optimal for unattended, field-deployed analog calibration where power-loss resilience is critical.
Availability
X9315TMT1 is available at Aetrix Electronics and suitable for industrial sensor calibration, laser diode biasing, and audio signal conditioning requiring stable component supply, long-term parametric consistency, and RoHS-compliant packaging.
Supply support for X9315TMT1 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 X9315 family was designed as a solid-state, nonvolatile alternative to mechanical potentiometers for analog trimming in harsh environments-emphasizing reliability, temperature stability, and ease of digital control.
FAQ
What is the exact package type and lead count for X9315TMT1?
The X9315TMT1 uses an 8-lead narrow-body SOIC package per JEDEC MS-012-AA (drawing M8.15), with Pb-free terminations and RoHS compliance. Its dimensions are 3.90 mm × 4.90 mm, and it is compatible with standard SOIC-8 footprints and reflow profiles.
Does X9315TMT1 retain its wiper position after power loss?
Yes, the X9315TMT1 stores the wiper position in nonvolatile EEPROM memory. Upon power-up, it automatically recalls the last stored value, ensuring repeatable analog settings without host intervention-critical for unattended industrial equipment.
What is the maximum allowable voltage across RH/VH and RL/VL terminals of X9315TMT1?
The X9315TMT1 specifies ΔV = |VH – VL| ≤ 5 V under all operating conditions. Exceeding this differential voltage risks exceeding absolute maximum ratings and may cause irreversible damage to the internal resistor array or switches.
Can X9315TMT1 operate from a 3.3 V supply?
Yes, the X9315TMT1 supports VCC from 2.7 V to 5.5 V, making it fully compatible with 3.3 V systems. At 3.3 V, wiper resistance rises to 400–1000 Ω (typ./max), and active current remains ≤80 µA, preserving low-power operation.
How is the wiper position stored in nonvolatile memory on X9315TMT1?
To store the current wiper position in nonvolatile memory, assert CS HIGH while holding INC HIGH. This triggers a 5–10 ms EEPROM write cycle. During this time, the device enters standby mode and ignores further INC edges until completion.
X9315TMT1 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:
- 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
X9315TMT1 FAQ
1.How can I place an order for X9315TMT1 through Aetrix?
Please submit a Request for Quotation (RFQ) for X9315TMT1 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 X9315TMT1 reliable?
The price and inventory of X9315TMT1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X9315TMT1 is usually 5 days.
3.What payment methods are accepted for X9315TMT1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9315TMT1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9315TMT1?
X9315TMT1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9315TMT1 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 X9315TMT1?
For technical support, including X9315TMT1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9315TMT1 requirements.
6.How does Aetrix verify that X9315TMT1 is sourced from the original manufacturer or authorized distributors?
All X9315TMT1 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 X9315TMT1 meets industry standards.
7.What is the process for return or replacement of X9315TMT1?
All X9315TMT1 units undergo pre-shipment inspection (PSI). If there is an issue with X9315TMT1, 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 X9315TMT1 part is unused and in its original packaging.
Return procedure for X9315TMT1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
X9315TMT1 Tags
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MCP4018T-103E/LT
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MCP4018T-503E/LT
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MCP4011T-103E/SN
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