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Renesas X9C503SI
- Part No.:
- X9C503SI
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
X9C503SI.pdf
- Description:
- IC DGTL POT 50KOHM 100TAP 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,546
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Product details
Overview
X9C503SI from Renesas Electronics is a digitally controlled potentiometer (XDCP™) implementing a 99-element resistor array with nonvolatile wiper position storage, 50kΩ end-to-end resistance, ±20% tolerance, and three-wire serial interface (CS/U/D/INC). It operates from 5V ±10%, supports ±5V terminal voltages, and serves as a solid-state replacement for mechanical potentiometers in precision analog trimming circuits.
For engineers reviewing the X9C503SI datasheet, X9C503SI pinout, X9C503SI application, or X9C503SI equivalent, this device offers verified nonvolatile recall on power-up, 100 wiper tap points, temperature-compensated resistance, low 750µA standby current, and compatibility with industrial temperature range (–40°C to +85°C) in SOIC-8 packaging.
Technical Context
The X9C503SI integrates a 7-bit up/down counter, nonvolatile memory for wiper position retention, and a 99-resistor ladder with make-before-break wiper switching. Its control logic responds to negative-edge-triggered INC pulses while U/D sets direction and CS enables selection and nonvolatile store operations.
Internal charge pump enables ±5V analog terminal operation from a single 5V supply; wiper resistance is typically 40Ω, and absolute linearity is ±1 MI (minimum increment = RTOTAL/99 ≈ 505Ω). The device enters low-power standby when CS is high and INC is low.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| End-to-End Resistance | 50kΩ ±20% - defines full-scale analog adjustment range and load interaction in voltage divider or variable resistor configurations |
| Wiper Tap Points | 100 positions (0–99) - provides 1% resolution per step; minimum increment = 505Ω at nominal RTOTAL |
| Terminal Voltage Range | ±5V referenced to VSS - supports bipolar signal conditioning without dual supplies |
| Supply Voltage | 5V ±10% - compatible with standard TTL/CMOS logic rails and eliminates need for auxiliary biasing |
| Standby Current | 750µA max - enables low-power system sleep modes while retaining programmable state |
| Nonvolatile Retention | 100 years - ensures factory-trimmed or user-calibrated settings persist across product lifetime |
| Temperature Range | –40°C to +85°C - qualified for industrial-grade embedded systems and instrumentation |
Pinout & Package
Package: 8-lead narrow-body SOIC (M8.15E), RoHS-compliant, surface-mount, 3.90 mm × 4.90 mm footprint with 1.27 mm lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 INC | Increment clock input | Negative-edge-triggered control signal; advances or retracts wiper one position per pulse based on U/D state |
| 2 U/D | Direction control | Logic level determines wiper movement direction during INC transitions; held stable during stepping |
| 3 VH/RH | High-side fixed terminal | Analog terminal with ±5V rating; functions as top rail of potentiometer; polarity label denotes relative wiper position, not voltage sign |
| 4 VSS | Ground reference | Primary digital and analog return; all voltage ratings referenced to this node |
| 5 VW/RW | Wiper output | Movable terminal with typical 40Ω series resistance; delivers interpolated voltage between VH and VL |
| 6 VL/RL | Low-side fixed terminal | Analog terminal with ±5V rating; functions as bottom rail; labeling reflects wiper motion direction, not DC potential |
| 7 CS | Chip select / store enable | Active-low selection; rising edge with INC = HIGH initiates nonvolatile store; otherwise enters standby |
| 8 VCC | Power supply | 5V ±10% digital supply powering logic, memory, and internal charge pump for analog terminals |
Key Features
| Feature | Design Value |
|---|---|
| Solid-state construction | Eliminates mechanical wear, contact bounce, and vibration sensitivity-enables >100,000 wiper adjustments per bit |
| Nonvolatile wiper recall | Automatically restores last stored position at power-up-no host initialization required for repeatable startup behavior |
| Three-wire serial interface | Minimal GPIO usage (CS/U/D/INC); no clock line needed-simplifies integration into microcontroller I/O-constrained designs |
| Charge pump support | Enables ±5V analog operation from single 5V rail-removes need for external bipolar supplies in signal conditioning paths |
| Temperature-compensated array | ±300 ppm/°C RTOTAL drift-maintains trim stability over industrial temperature range without recalibration |
Applications
| Audio Volume Control | Laser Diode Bias Adjustment |
|---|---|
Use Scenario: Digital volume setting in professional audio mixers with power-cycle memory retention. IC Role / Device Role / Timing Role: Three-terminal potentiometer replacing mechanical trimmer; wiper delivers attenuated analog audio signal between VH and VL. Use Value: Eliminates manual calibration drift and mechanical failure; retains user-set volume after AC power loss without firmware intervention. |
Use Scenario: Precision bias current tuning for telecom laser diodes requiring stable optical output power. IC Role / Device Role / Timing Role: Two-terminal variable resistor in feedback loop of constant-current source controlling laser drive. Use Value: Enables factory calibration storage and field recalibration via microcontroller; ±300 ppm/°C tempco ensures <±0.5% bias shift over –40°C to +85°C. |
| Industrial Sensor Calibration | Programmable Power Supply Reference |
Use Scenario: Offset/gain trimming of bridge sensor amplifiers in pressure transmitters deployed in harsh environments. IC Role / Device Role / Timing Role: Voltage divider with VH = excitation, VL = ground, VW = adjustable reference to op-amp input. Use Value: Nonvolatile storage preserves calibration across maintenance cycles; ±5V terminal rating accommodates ratiometric sensor interfaces. |
Use Scenario: Digitally adjustable reference voltage generation for programmable DC-DC controllers in automated test equipment. IC Role / Device Role / Timing Role: Three-terminal potentiometer feeding noninverting op-amp to scale bandgap reference (e.g., 1.25V) to 0.5–5.0V range. Use Value: Replaces multiple discrete resistors and jumpers; 1% resolution enables fine-grained output voltage programming with zero hardware changes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digitally controlled potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5204BRUZ10 | Quad 10kΩ channel, SPI interface, 3.3V/5V supply, 200ppm/°C tempco | Higher channel count but fixed 10kΩ; requires SPI master and separate VLOGIC/VDD rails | Select for multi-channel trimming where space and SPI infrastructure exist; not drop-in for X9C503SI's single-channel, 3-wire, 50kΩ use case |
| MCP41050-I/P | Single 50kΩ channel, SPI interface, 5V supply, ±20% RTOTAL, 500ppm/°C tempco | Same resistance value but higher tempco and SPI dependency; no built-in nonvolatile recall on power-up | Choose when SPI is already used elsewhere in design and external EEPROM-based recall is acceptable; lacks X9C503SI's integrated auto-recall |
Compared with AD5204BRUZ10 and MCP41050-I/P, the X9C503SI delivers simpler 3-wire control, guaranteed power-up recall without firmware, and superior temperature stability (±300 ppm/°C vs. 500 ppm/°C), making it optimal for standalone analog trimming where minimal GPIO and deterministic startup are critical.
Availability
X9C503SI is available at Aetrix Electronics and suitable for industrial sensor calibration, programmable power supply references, laser diode biasing, and audio volume control requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for X9C503SI 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 industrial, automotive, and infrastructure markets.
The X9C503SI belongs to Renesas' XDCP™ (Digitally Controlled Potentiometer) family, designed specifically for reliable, nonvolatile analog parameter adjustment in space- and GPIO-constrained embedded systems.
FAQ
What is the wiper resistance specification for the X9C503SI?
The X9C503SI specifies a typical wiper resistance of 40Ω, with a maximum of 100Ω under ±1mA wiper current conditions. This series resistance directly impacts insertion loss and loading effects when used as a voltage divider or variable resistor; designers must account for it in gain calculations and noise modeling. The value is measured per the Electrical Specifications table on page 4 of FN8222 Rev 4.00.
Does the X9C503SI require an external clock or SPI peripheral to operate?
No, the X9C503SI uses a self-timed three-wire interface (CS, U/D, INC) with no external clock or SPI peripheral required. INC is negative-edge-triggered, and timing is governed by internal logic with specified setup/hold requirements (e.g., tDI = 2.9µs U/D to INC setup). This allows direct GPIO control from any microcontroller without dedicated serial hardware.
How is nonvolatile storage triggered on the X9C503SI?
Nonvolatile storage on the X9C503SI is triggered by a rising edge on CS while INC is held HIGH. After the store completes (~20ms), the device enters standby mode. If CS rises with INC LOW, no store occurs and the device simply deselects. This behavior is defined in the Pin Descriptions and Principles of Operation sections of FN8222 Rev 4.00.
Can the X9C503SI be used with analog signals exceeding the 5V supply rail?
Yes-the X9C503SI supports analog terminal voltages from –5V to +5V relative to VSS, enabled by its internal charge pump. This allows bipolar signal handling (e.g., ±2.5V audio) even with a single 5V VCC supply. However, the absolute voltage difference |VH – VL| must not exceed 10V, and terminal voltages must remain within ±5V of VSS per Absolute Maximum Ratings on page 4.
What is the resolution and linearity performance of the X9C503SI?
The X9C503SI provides 100 wiper positions (1% resolution), with absolute linearity of ±1 MI (±505Ω) and relative linearity of ±0.2 MI. These values are measured across the full 50kΩ range and ensure predictable voltage division accuracy in precision trimming applications. Linearity specs are validated per test conditions in the Electrical Specifications table on page 4 of FN8222 Rev 4.00.
X9C503SI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- XDCP™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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:
- 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):
- 40
X9C503SI FAQ
1.How can I place an order for X9C503SI through Aetrix?
Please submit a Request for Quotation (RFQ) for X9C503SI 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 X9C503SI reliable?
The price and inventory of X9C503SI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X9C503SI is usually 5 days.
3.What payment methods are accepted for X9C503SI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9C503SI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9C503SI?
X9C503SI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9C503SI 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 X9C503SI?
For technical support, including X9C503SI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9C503SI requirements.
6.How does Aetrix verify that X9C503SI is sourced from the original manufacturer or authorized distributors?
All X9C503SI 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 X9C503SI meets industry standards.
7.What is the process for return or replacement of X9C503SI?
All X9C503SI units undergo pre-shipment inspection (PSI). If there is an issue with X9C503SI, 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 X9C503SI part is unused and in its original packaging.
Return procedure for X9C503SI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
X9C503SI Tags
-
MCP4018T-103E/LT
Microchip Technology
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MCP4018T-503E/LT
Microchip Technology
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MCP4011T-103E/SN
Microchip Technology
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MCP4018T-104E/LT
Microchip Technology
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MCP4017T-503E/LT
Microchip Technology
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MCP4018T-502E/LT
Microchip Technology
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MCP4017T-103E/LT
Microchip Technology
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MCP4531T-103E/MF
Microchip Technology
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MCP4021T-202E/SN
Microchip Technology
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MCP4023T-103E/CH
Microchip Technology
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MCP4022T-503E/CH
Microchip Technology
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MCP4551T-502E/MS
Microchip Technology
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