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Renesas X9317US8I-2.7T1
- Part No.:
- X9317US8I-2.7T1
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
X9317US8I-2.7T1.pdf
- Description:
- IC DGTL POT 50KOHM 100TAP 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,100
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Product details
Overview
X9317US8I-2.7T1 from Renesas Electronics is a digitally controlled potentiometer (XDCP™) with 100-tap resolution, nonvolatile wiper position storage, and 50kΩ end-to-end resistance. It operates from 2.7V to 5.5V, consumes <5µA in standby, and uses a 3-wire up/down interface for voltage divider or variable resistor applications in precision analog trimming circuits.
For engineers reviewing the X9317US8I-2.7T1 datasheet, X9317US8I-2.7T1 pinout, X9317US8I-2.7T1 application, or X9317US8I-2.7T1 equivalent, this device supports low-noise DC bias adjustment, laser diode bias control, and voltage regulator output tuning where temperature-stable, memory-retentive resistance setting is required.
Technical Context
The X9317US8I-2.7T1 implements a 99-element resistor array with make-before-break wiper switching, enabling glitch-free tap transitions. Its 7-bit counter drives a decoder that selects one of 100 wiper positions, with position stored in nonvolatile memory on CS↑/INC↑ and recalled at power-up.
It features ±20% end-to-end resistance tolerance, ±300 ppm/°C total resistance temperature coefficient, and ratiometric temperature coefficient of ±20 ppm/°C - ensuring stable voltage division across -40°C to +85°C industrial operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| End-to-end Resistance | 50kΩ ±20% - defines full-scale analog range for voltage divider or current-limiting configurations |
| Supply Voltage Range | 2.7V to 5.5V - enables direct compatibility with 3.3V and 5V systems without level-shifting |
| Wiper Resolution | 100 taps (1% step size) - provides fine-grained analog adjustment with 1 MI = (VRH−VRL)/99 |
| Standby Current | <5µA - minimizes quiescent power in battery-powered or always-on trim applications |
| Nonvolatile Storage | 100-year data retention, 100,000 write cycles - eliminates need for external EEPROM or MCU-based calibration storage |
| Temperature Range | -40°C to +85°C - qualified for industrial-grade embedded systems requiring long-term reliability |
| Interface | 3-wire serial (CS, U/D, INC) - simplifies host connection using GPIOs without SPI/I²C peripherals |
Pinout & Package
Package: 8-lead SOIC (M8.15E), RoHS-compliant, narrow-body plastic package with 1.27mm lead pitch and 4.90mm × 3.90mm footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (INC) | Increment clock input | Negative-edge-triggered control line; toggling moves wiper up/down per U/D state |
| 2 (U/D) | Direction control input | Logic level sets wiper movement direction: HIGH = increment, LOW = decrement |
| 3 (RH) | High terminal | Fixed end of resistor array; connects to higher potential in voltage divider mode |
| 4 (VSS) | Ground reference | Power and signal return path; must be connected before VCC during power-up |
| 5 (RW) | Wiper output | Movable terminal; series resistance ≤400Ω at 2.7V ensures minimal loading in precision feedback paths |
| 6 (RL) | Low terminal | Fixed end of resistor array; connects to lower potential or ground in voltage divider mode |
| 7 (CS) | Chip select | Active-low enable; HIGH initiates nonvolatile store when INC is also HIGH |
| 8 (VCC) | Supply voltage | 2.7V–5.5V power rail; ramp rate must be 0.2–50 V/ms to prevent unintended wiper shifts |
Key Features
| Feature | Design Value |
|---|---|
| Nonvolatile wiper position storage | Eliminates recalibration after power cycle; retains last-set value for consistent startup behavior |
| Temperature-compensated resistor array | ±20 ppm/°C ratiometric TC ensures stable voltage division ratio across operating temperature range |
| Make-before-break wiper switching | Prevents open-circuit glitches during tap transitions, critical for feedback loop stability |
| Low-noise performance | -120 dBV noise (1kHz ref.) enables use in sensitive analog signal paths like laser bias or sensor conditioning |
| Wide supply range with low standby current | 2.7V–5.5V operation and <5µA ISB support energy-constrained designs including portable instrumentation |
Applications
| LCD Bias Control | DC Bias Adjustment |
|---|---|
Use Scenario: Setting optimal contrast and gamma voltage for monochrome or color LCD panels in industrial HMIs. IC Role / Device Role / Timing Role: Three-terminal potentiometer providing adjustable DC bias to LCD segment drivers. Use Value: Nonvolatile recall ensures consistent display appearance across power cycles without host MCU intervention. | Use Scenario: Calibrating offset voltage in op-amp-based sensor signal conditioning circuits. IC Role / Device Role / Timing Role: Two-terminal variable resistor in amplifier feedback network for precise DC gain/offset tuning. Use Value: 100-tap resolution and ±1 MI absolute linearity enable sub-millivolt-level trimming accuracy. |
| Laser Diode Bias Control | Voltage Regulator Output Control |
Use Scenario: Adjusting constant-current source for laser diode driver ICs in optical transceivers or medical lasers. IC Role / Device Role / Timing Role: Two-terminal variable resistor setting Iadj current in adjustable linear regulators (e.g., LM317). Use Value: Low wiper resistance (≤400Ω at 2.7V) minimizes error in high-precision current-setting applications. | Use Scenario: Fine-tuning output voltage of programmable DC-DC converters or LDOs in power management subsystems. IC Role / Device Role / Timing Role: Three-terminal potentiometer in feedback divider network of voltage-mode regulators. Use Value: ±20 ppm/°C ratiometric TC maintains output voltage stability over temperature without software compensation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digitally controlled potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5241BRMZ10 | 10kΩ RTOTAL, I²C interface, 64-tap resolution, 2.7V–5.5V supply | Requires I²C controller; lower resolution limits fine-tuning granularity | Preferred when system already uses I²C bus and 10kΩ impedance matches design constraints |
| MCP4017T-503E/OT | 50kΩ RTOTAL, 3-wire up/down interface, 64-tap resolution, 1.8V–5.5V supply | Lower tap count (64 vs. 100); no nonvolatile storage - wiper resets on power-up | Selected for ultra-low-voltage (1.8V) operation where volatile trim is acceptable |
Compared with AD5241BRMZ10 and MCP4017T-503E/OT, the X9317US8I-2.7T1 delivers superior resolution (100 taps), guaranteed nonvolatile recall, and tighter ratiometric temperature coefficient (±20 ppm/°C), making it optimal for industrial systems requiring unattended, drift-resistant analog calibration.
Availability
X9317US8I-2.7T1 is available at Aetrix Electronics and suitable for LCD bias control, laser diode biasing, voltage regulator tuning, and precision sensor calibration requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for X9317US8I-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
Renesas Electronics is a global semiconductor leader delivering microcontrollers, analog power, and SoC solutions for automotive, industrial, and IoT applications with emphasis on reliability and long-term support.
The X9317 family was designed specifically for solid-state replacement of mechanical potentiometers in analog trimming applications where nonvolatile memory, low noise, and temperature stability are critical.
FAQ
What is the maximum wiper current rating for the X9317US8I-2.7T1?
The X9317US8I-2.7T1 supports a maximum wiper current (IW) of ±4.4mA under specified test conditions. This limit applies regardless of supply voltage within the 2.7V–5.5V range and ensures safe operation without degrading wiper switch reliability or introducing nonlinearities in the resistor array. Exceeding this current may accelerate wear or cause temporary resistance deviation.
Does the X9317US8I-2.7T1 retain its wiper position after power loss?
Yes, the X9317US8I-2.7T1 stores the wiper position in nonvolatile memory upon command (CS↑ while INC = HIGH) and automatically recalls it at power-up. Data retention is rated for 100 years, and endurance is 100,000 write cycles - eliminating need for external memory or host-initiated reinitialization in the X9317US8I-2.7T1.
Can the X9317US8I-2.7T1 operate from a 3.3V supply?
Yes, the X9317US8I-2.7T1 is fully specified for operation from 2.7V to 5.5V, making it compatible with standard 3.3V logic and power domains. All electrical parameters - including standby current (<5µA), wiper resistance (≤400Ω), and timing (tCYC = 2µs min) - are guaranteed across this range, including at 3.3V nominal supply.
What is the temperature coefficient behavior of the X9317US8I-2.7T1's resistance ratio?
The X9317US8I-2.7T1 exhibits a ratiometric temperature coefficient of ±20 ppm/°C, meaning the voltage division ratio (VRW/VRH–RL) remains highly stable over temperature. This is distinct from its ±300 ppm/°C absolute RTOTAL TC and is critical for applications like precision voltage references or sensor bridges where ratio stability matters more than absolute resistance.
How does the X9317US8I-2.7T1 handle wiper transitions between taps?
During wiper movement, the X9317US8I-2.7T1 uses make-before-break switching: multiple adjacent taps connect briefly to RW before the previous connection opens. This prevents open-circuit interruptions in feedback paths. The transition time (tIW) is 1–5µs, and temporary parallel resistance reduction is bounded by design to avoid significant transient errors in properly decoupled circuits.
X9317US8I-2.7T1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- XDCP™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Taper:
- Linear
- Configuration:
- Potentiometer
- Number of Circuits:
- 1
- Number of Taps:
- 100
- 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-SOIC
- Operating Temperature:
- -40°C ~ 85°C
- Resistance - Wiper (Ohms) (Typ):
- 400
X9317US8I-2.7T1 FAQ
1.How can I place an order for X9317US8I-2.7T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for X9317US8I-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 X9317US8I-2.7T1 reliable?
The price and inventory of X9317US8I-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 X9317US8I-2.7T1 is usually 5 days.
3.What payment methods are accepted for X9317US8I-2.7T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9317US8I-2.7T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9317US8I-2.7T1?
X9317US8I-2.7T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9317US8I-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 X9317US8I-2.7T1?
For technical support, including X9317US8I-2.7T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9317US8I-2.7T1 requirements.
6.How does Aetrix verify that X9317US8I-2.7T1 is sourced from the original manufacturer or authorized distributors?
All X9317US8I-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 X9317US8I-2.7T1 meets industry standards.
7.What is the process for return or replacement of X9317US8I-2.7T1?
All X9317US8I-2.7T1 units undergo pre-shipment inspection (PSI). If there is an issue with X9317US8I-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 X9317US8I-2.7T1 part is unused and in its original packaging.
Return procedure for X9317US8I-2.7T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
X9317US8I-2.7T1 Tags
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MCP4018T-103E/LT
Microchip Technology
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MCP4018T-503E/LT
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MCP4011T-103E/SN
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MCP4017T-503E/LT
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MCP4018T-502E/LT
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MCP4017T-103E/LT
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MCP4531T-103E/MF
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MCP4021T-202E/SN
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MCP4023T-103E/CH
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MCP4022T-503E/CH
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MCP4551T-502E/MS
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