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Renesas X9C503P
- Part No.:
- X9C503P
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
X9C503P.pdf
- Description:
- IC DGTL POT 50KOHM 100TAP 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,413
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Product details
Overview
X9C503P 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 at 5V ±10%, supports ±5V terminal voltages, and is used for precision analog trimming in power supply feedback loops, sensor calibration circuits, and programmable gain amplifiers.
For engineers reviewing the X9C503P datasheet, X9C503P pinout, X9C503P application, or X9C503P equivalent, this page delivers verified technical context, real-world design meaning of key specs, validated pin functions, confirmed alternatives with documented differences, and supply-chain support tailored for industrial embedded and analog control designs.
Technical Context
The X9C503P integrates a 7-bit up/down counter, nonvolatile memory for wiper position retention, and a 100-tap decoder driving a make-before-break wiper switch network across 99 resistive elements. Its internal charge pump enables ±5V analog signal handling while powered solely from 5V VCC.
Wiper movement is edge-triggered via INC input with direction controlled by U/D; CS enables selection and initiates nonvolatile store when raised high with INC high. The device powers up to the last stored wiper position and exhibits ±300 ppm/°C RTOTAL temperature coefficient over –40°C to +85°C industrial range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| End-to-End Resistance | 50kΩ ±20% - sets full-scale analog adjustment range and load on driving circuitry |
| Wiper Tap Points | 100 positions (0–99) - provides 1% resolution for fine-grained analog parameter control |
| Supply Voltage | 5V ±10% - compatible with standard TTL/CMOS logic rails and eliminates need for auxiliary supplies |
| Terminal Voltage Range | ±5V referenced to VSS - supports bipolar signal conditioning without external level-shifting |
| Wiper Resistance | 40Ω typical - introduces minimal series impedance in voltage divider or variable resistor configurations |
| Nonvolatile Storage | 100-year data retention, 100,000 write cycles - enables field-programmable calibration without battery backup |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded systems and automotive under-hood ancillary circuits |
Pinout & Package
Package: 8-lead PDIP (MDP0031), through-hole mount, RoHS-compliant, Pb-free matte tin finish. Suitable for wave soldering only; not rated for reflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 INC | Increment clock input | Negative-edge triggered; advances or retreats wiper per U/D state - defines timing-critical control interface |
| 2 U/D | Direction control input | Logic level selects wiper movement direction during INC transition - enables bidirectional digital trimming |
| 3 VH/RH | High-side fixed terminal | Analog terminal with ±5V rating; polarity label reflects wiper motion direction, not absolute voltage - used as top rail in voltage dividers |
| 4 VSS | Ground reference | System ground return for logic and analog sections - must be low-impedance to minimize noise coupling into resistor array |
| 5 VW/RW | Wiper output terminal | Movable tap point with 40Ω typical series resistance - connects to amplifier inputs, feedback nodes, or bias points requiring dynamic resistance adjustment |
| 6 VL/RL | Low-side fixed terminal | Analog terminal with ±5V rating; labeled relative to U/D-selected motion direction - used as bottom rail or current-sense node |
| 7 CS | Chip select / store enable | Active-low selection; rising edge with INC high triggers nonvolatile store - critical for persistent configuration after power loss |
| 8 VCC | Positive supply | 5V ±10% CMOS supply powering logic, memory, and charge pump - internal regulation enables wide analog voltage swing |
Key Features
| Feature | Design Value |
|---|---|
| Solid-state construction | Eliminates mechanical wear, contact bounce, and environmental sensitivity inherent in rotary potentiometers |
| Three-wire serial interface | Requires only CS, U/D, and INC signals - minimizes MCU GPIO usage and PCB routing complexity |
| Nonvolatile wiper position storage | Recalls last setting at power-up without external EEPROM or initialization firmware - reduces boot-time calibration overhead |
| Temperature-compensated resistor array | ±300 ppm/°C RTOTAL drift - maintains stable resistance ratio across industrial temperature range for precision voltage division |
| Make-before-break wiper switching | Prevents open-circuit transients during tap transitions - avoids glitches in sensitive analog feedback paths |
Applications
| Power Supply Feedback Trimming | Sensor Offset Calibration |
|---|---|
|
Use Scenario: Adjusting reference voltage in adjustable DC-DC converter feedback networks to compensate for component tolerances and thermal drift. IC Role / Device Role / Timing Role: Two-terminal variable resistor replacing mechanical trimmer in error amplifier bias path. Use Value: Enables factory or field calibration with 1% resolution and permanent storage, eliminating manual adjustment and improving production yield. |
Use Scenario: Nulling DC offset voltage in bridge-based pressure or temperature sensor signal chains before ADC input. IC Role / Device Role / Timing Role: Three-terminal potentiometer configured as adjustable voltage divider injecting correction voltage into summing junction. Use Value: Provides repeatable, software-controlled offset compensation across temperature without recalibration routines or external DACs. |
| Programmable Gain Amplifier | Audio Channel Balance Control |
|
Use Scenario: Setting gain in instrumentation amplifier configurations where feedback resistance must be digitally tuned for multi-range measurement. IC Role / Device Role / Timing Role: Two-terminal variable resistor in amplifier feedback loop, directly determining closed-loop gain. Use Value: Delivers 100-step gain resolution with nonvolatile recall, enabling automatic range switching and consistent gain accuracy across power cycles. |
Use Scenario: Balancing left/right channel levels in professional audio mixing consoles or consumer AV receivers using digital control. IC Role / Device Role / Timing Role: Dual configuration: one X9C503P per channel as three-terminal potentiometer for independent volume control. Use Value: Supports silent, glitch-free attenuation changes and retains user-set balance after power-down - no mute artifacts or level jumps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digitally controlled potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5204BRZ10 | Quad 10kΩ pot, SPI interface, 3.3V/5V supply, 200ppm/°C tempco | Higher integration (4 channels), different serial protocol, lower resistance value | Select when multi-channel trimming or SPI host interface is required; not drop-in for X9C503P's 50kΩ or 3-wire interface |
| MCP41050-I/P | Single 50kΩ pot, SPI interface, 2.7–5.5V supply, 150ppm/°C tempco | Same resistance value but SPI-only communication, tighter tempco, wider VDD range | Choose for lower temperature drift and modern microcontroller SPI compatibility; requires interface redesign from 3-wire to SPI |
Compared with AD5204BRZ10 and MCP41050-I/P, the X9C503P offers unique advantages in legacy 3-wire system integration, industrial temperature operation with proven reliability, and direct replacement of mechanical trimmers without protocol translation - making it optimal for cost-sensitive, single-channel analog trimming where simplicity and nonvolatile recall are prioritized.
Availability
X9C503P is available at Aetrix Electronics and suitable for power supply trimming, sensor calibration, programmable gain amplification, and audio level control requiring stable component supply and long-term obsolescence management.
Supply support for X9C503P 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 X9C503P belongs to Renesas' XDCP™ family of digitally controlled potentiometers, designed specifically for replacing mechanical trimmers in analog signal conditioning, power management, and calibration-critical embedded systems.
FAQ
What is the end-to-end resistance tolerance and temperature coefficient of the X9C503P?
The X9C503P has an end-to-end resistance of 50kΩ with a tolerance of ±20% and a temperature coefficient of ±300 ppm/°C over the industrial temperature range (–40°C to +85°C). These values are specified in the Electrical Specifications table of the FN8222 datasheet and reflect the device's suitability for stable analog trimming in environments with moderate thermal variation. The X9C503P maintains ratiometric stability better than absolute resistance stability, which is critical in voltage divider applications.
How does the X9C503P store and recall wiper position after power cycling?
The X9C503P stores the current wiper position in nonvolatile memory when CS is raised high while INC is held high. Upon subsequent power-up, the device automatically recalls that stored position and configures the wiper accordingly. This behavior is guaranteed across 100 years of data retention and 100,000 write cycles, as verified in the Endurance and Data Retention section of the FN8222 datasheet. No external components or firmware initialization are required for this function.
Can the X9C503P operate with analog signals exceeding the 5V supply rail?
Yes - the X9C503P 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 or ±4.5V) even when powered only from a single 5V supply. However, the absolute maximum voltage difference between VH/RH and VL/RL is limited to 10V for the X9C503P, as stated in the Absolute Maximum Ratings table of FN8222.
What is the wiper resistance and how does it affect circuit performance?
The X9C503P has a typical wiper resistance of 40Ω, with a maximum of 100Ω, measured at ±1mA wiper current. This series resistance introduces minimal error in high-impedance voltage divider configurations but must be accounted for in low-impedance current-sensing or precision gain-setting applications. Its consistency across taps and temperature contributes to predictable linearity and repeatability in calibrated systems.
Is the X9C503P RoHS compliant and what package options are available?
Yes, the X9C503P is RoHS compliant and offered in two Pb-free package variants: 8-lead PDIP (X9C503PZ, MDP0031) and 8-lead SOIC (X9C503SZ, M8.15E). The PDIP version is qualified for wave soldering only, not reflow, per Note 3 in the Ordering Information table. Both packages feature 100% matte tin termination and meet IPC/JEDEC J-STD-020 moisture sensitivity requirements.
X9C503P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- XDCP™
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- 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:
- Through Hole
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-PDIP
- Operating Temperature:
- 0°C ~ 70°C
- Resistance - Wiper (Ohms) (Typ):
- 40
X9C503P FAQ
1.How can I place an order for X9C503P through Aetrix?
Please submit a Request for Quotation (RFQ) for X9C503P 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 X9C503P reliable?
The price and inventory of X9C503P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X9C503P is usually 5 days.
3.What payment methods are accepted for X9C503P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9C503P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9C503P?
X9C503P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9C503P 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 X9C503P?
For technical support, including X9C503P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9C503P requirements.
6.How does Aetrix verify that X9C503P is sourced from the original manufacturer or authorized distributors?
All X9C503P 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 X9C503P meets industry standards.
7.What is the process for return or replacement of X9C503P?
All X9C503P units undergo pre-shipment inspection (PSI). If there is an issue with X9C503P, 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 X9C503P part is unused and in its original packaging.
Return procedure for X9C503P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
X9C503P 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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MCP4018T-104E/LT
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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
Microchip Technology
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MCP4023T-103E/CH
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MCP4022T-503E/CH
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MCP4551T-502E/MS
Microchip Technology
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