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Renesas X9C503S
- Part No.:
- X9C503S
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
X9C503S.pdf
- Description:
- IC DGTL POT 50KOHM 100TAP 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,747
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Product details
Overview
X9C503S from Renesas Electronics is a digitally controlled potentiometer (XDCP™) implementing a 99-element resistor array with nonvolatile wiper position storage, 50 kΩ end-to-end resistance, ±20% tolerance, and three-wire serial interface (CS/U/D/INC). It functions as a solid-state replacement for mechanical potentiometers in precision analog trimming, power supply feedback networks, and sensor calibration circuits.
For engineers reviewing the X9C503S datasheet, X9C503S pinout, X9C503S application, or X9C503S equivalent, this page delivers verified electrical specs, SOIC-8 package details, wiper resistance (40 Ω typ), nonvolatile recall behavior, and real-world use cases requiring stable, reprogrammable resistance without manual adjustment.
Technical Context
The X9C503S integrates a 7-bit up/down counter, nonvolatile memory for wiper position retention, and a 100-tap decoder driving a make-before-break switch network across 99 resistive elements. Its internal charge pump enables ±5 V terminal voltage operation with single 5 V supply.
Wiper movement is edge-triggered via INC input under CS enable, with direction controlled by U/D logic level. Storage to nonvolatile memory occurs on CS rising edge while INC is high, ensuring deterministic power-up recall of last stored setting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| End-to-End Resistance | 50 kΩ ±20% - defines full-scale analog range for voltage divider or current-limiting applications |
| Wiper Resistance | 40 Ω typical - contributes minimal series impedance in wiper path, critical for low-error signal routing |
| Terminal Voltage Range | ±5 V referenced to VSS - supports bipolar signal conditioning without dual supplies |
| Active Supply Current | 3 mA max at 5 V - enables low-power embedded trimming without burdening system regulators |
| Nonvolatile Retention | 100 years - guarantees factory-set or field-calibrated values persist over product lifetime |
| Resolution | 1% (1/99 step) - provides fine-grained adjustment granularity for precision biasing and gain control |
| Temperature Coefficient | ±300 ppm/°C - ensures stable resistance ratio across industrial temperature range (–40°C to +85°C) |
Pinout & Package
Package: 8-lead narrow-body SOIC (M8.15E footprint), RoHS-compliant, surface-mount compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 INC | Increment clock input | Negative-edge triggered; advances or retreats wiper per U/D state - requires clean digital timing (tCYC ≥ 2 µs) |
| 2 U/D | Direction control | Logic level sets wiper travel direction during INC transitions - held stable during movement for monotonic positioning |
| 3 VH/RH | High-side fixed terminal | One end of resistor array; accepts –5 V to +5 V; polarity label denotes relative position, not voltage potential |
| 4 VSS | Ground reference | System ground return for logic and analog sections; must be low-impedance to minimize noise coupling |
| 5 VW/RW | Wiper output terminal | Movable tap point; series resistance ≤100 Ω ensures minimal loading in feedback paths |
| 6 VL/RL | Low-side fixed terminal | Opposite end of resistor array; symmetric voltage rating (–5 V to +5 V) with VH/RH |
| 7 CS | Chip select | Active-low enable; initiates wiper motion when low; triggers nonvolatile store on rising edge with INC high |
| 8 VCC | Supply voltage | +5 V ±10%; powers logic, memory, and charge pump - ramp rate must stay within 0.2–50 V/ms |
Key Features
| Feature | Design Value |
|---|---|
| Solid-state construction | Eliminates mechanical wear, contact bounce, and environmental drift - rated for 100,000 wiper adjustments |
| Three-wire serial interface | Minimal GPIO usage (CS/U/D/INC); no SPI/I²C controller required - simplifies MCU integration |
| Nonvolatile wiper recall | Automatically restores last stored position at power-up - enables consistent startup behavior without host initialization |
| Charge pump support | Enables ±5 V analog signal swing using only +5 V supply - removes need for dual-rail or charge-pump ICs |
| Make-before-break switching | Prevents open-circuit transients during wiper movement - avoids signal dropout in active feedback loops |
Applications
| Audio Volume Control | DC Power Supply Feedback |
|---|---|
Use Scenario: Adjusting gain in line-level audio amplifiers with microcontroller-based user interface. IC Role / Device Role / Timing Role: Two-terminal variable resistor replacing mechanical pot; wiper position set via front-panel encoder or remote command. Use Value: Eliminates knob wear and dust sensitivity while retaining analog signal path integrity and zero-latency response. |
Use Scenario: Trimming output voltage of adjustable DC-DC converters in telecom power modules. IC Role / Device Role / Timing Role: Three-terminal potentiometer in feedback divider network; wiper position calibrated during production and recalled at boot. Use Value: Enables precise, repeatable output voltage setting without manual soldering or laser trimming - supports field recalibration. |
| Sensor Signal Conditioning | Industrial DAC Offset Calibration |
Use Scenario: Compensating zero-point drift in bridge-based pressure sensors across temperature. IC Role / Device Role / Timing Role: Adjustable voltage offset injection point in instrumentation amplifier stage; updated periodically by host MCU. Use Value: Maintains measurement accuracy over –40°C to +85°C without external trim pots or EEPROM-based software compensation. |
Use Scenario: Nulling output offset error in 12-bit DACs used in PLC analog output modules. IC Role / Device Role / Timing Role: Precision two-terminal resistor in DAC's reference leg; value stored in nonvolatile memory after factory calibration. Use Value: Achieves <±1 LSB offset correction stability over 100-year data retention - eliminates periodic recalibration maintenance. |
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 10 kΩ channel, SPI interface, 256-step resolution, no nonvolatile storage | Requires external EEPROM or host MCU to retain settings; better suited for multi-channel simultaneous adjustment | Select when needing multiple independent pots or higher resolution; avoid if automatic power-up recall is mandatory |
| MCP41050-I/P | Single 50 kΩ channel, SPI interface, volatile wiper register, no nonvolatile memory | Wiper resets to mid-scale on power cycle; requires host initialization before use | Choose for cost-sensitive designs where host firmware handles calibration persistence; not suitable for unattended startup |
Compared with AD5204BRUZ10 and MCP41050-I/P, the X9C503S uniquely delivers guaranteed power-up wiper recall without host intervention, making it optimal for safety-critical or maintenance-free analog trimming where deterministic initial state is essential.
Availability
X9C503S is available at Aetrix Electronics and suitable for audio equipment tuning, DC-DC converter feedback networks, sensor calibration systems, and industrial DAC offset correction requiring stable component supply and long-term parameter retention.
Supply support for X9C503S 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 high-performance microcontrollers, analog, and power solutions for industrial, automotive, and infrastructure markets.
The X9C503S belongs to Renesas' XDCP™ family of digitally controlled potentiometers, designed specifically for replacing mechanical trimmers in applications demanding reliability, programmability, and nonvolatile setting retention.
FAQ
What is the maximum allowable voltage across the VH/RH and VL/RL terminals for the X9C503S?
The X9C503S allows a maximum differential voltage of 10 V between VH/RH and VL/RL terminals, as specified in the Absolute Maximum Ratings table. This limit applies regardless of individual terminal voltages, which may range from –5 V to +5 V referenced to VSS. Exceeding 10 V risks irreversible damage to the internal resistor array or switches.
Does the X9C503S require an external clock or SPI peripheral to operate?
No, the X9C503S uses a simple three-wire asynchronous interface (CS, U/D, INC) with no external clock or SPI peripheral required. Wiper movement is controlled by toggling the INC input on its negative edge while holding CS low and U/D at the desired direction level - enabling direct GPIO control from any microcontroller.
How does the X9C503S handle power-up initialization, and is host MCU intervention needed?
The X9C503S automatically recalls the last stored wiper position from nonvolatile memory upon VCC reaching its final value - no host MCU action is required. The recall completes within 500 µs after power stabilization, ensuring immediate analog functionality at system startup without firmware delay or initialization sequence.
Can the X9C503S be used in AC-coupled signal paths, and what is its bandwidth limitation?
The X9C503S supports AC signals via its ±5 V terminal voltage rating and exhibits potentiometer capacitances of 10 pF (CH/CL) and 25 pF (CW) per the datasheet. Its usable small-signal bandwidth is limited by RC time constants formed with external loads; for 50 kΩ total resistance and 25 pF wiper capacitance, –3 dB point is ~125 kHz - sufficient for audio and slow control loops.
What is the endurance specification for the X9C503S, and how is it measured?
The X9C503S is rated for 100,000 data changes per bit in nonvolatile memory, meaning each wiper position can be stored and recalled up to 100,000 times. This endurance is validated under standard operating conditions and reflects guaranteed minimum cycles before potential memory degradation - far exceeding typical field requirements for calibration or infrequent adjustment.
X9C503S 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:
- 0°C ~ 70°C
- Resistance - Wiper (Ohms) (Typ):
- 40
X9C503S FAQ
1.How can I place an order for X9C503S through Aetrix?
Please submit a Request for Quotation (RFQ) for X9C503S 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 X9C503S reliable?
The price and inventory of X9C503S are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X9C503S is usually 5 days.
3.What payment methods are accepted for X9C503S?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9C503S transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9C503S?
X9C503S orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9C503S 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 X9C503S?
For technical support, including X9C503S datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9C503S requirements.
6.How does Aetrix verify that X9C503S is sourced from the original manufacturer or authorized distributors?
All X9C503S 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 X9C503S meets industry standards.
7.What is the process for return or replacement of X9C503S?
All X9C503S units undergo pre-shipment inspection (PSI). If there is an issue with X9C503S, 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 X9C503S part is unused and in its original packaging.
Return procedure for X9C503S:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
X9C503S Tags
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MCP4018T-503E/LT
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MCP4011T-103E/SN
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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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MCP4551T-502E/MS
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