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Renesas X9C303S8ZT1
- Part No.:
- X9C303S8ZT1
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
X9C303S8ZT1.pdf
- Description:
- IC XDCP 100-TAP 32K EE 8-SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,552
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Product details
Overview
X9C303S8ZT1 from Intersil is a logarithmic digitally controlled potentiometer (XDCP™) with 100 tap positions, 32kΩ end-to-end resistance (±15%), ±5V terminal voltage rating, and nonvolatile wiper position storage. It functions as a solid-state three-terminal potentiometer or two-terminal variable resistor in audio gain control, sensor calibration, and power supply feedback loops.
For engineers reviewing the X9C303S8ZT1 datasheet, X9C303S8ZT1 pinout, X9C303S8ZT1 application, or X9C303S8ZT1 equivalent, key selection criteria include log taper accuracy (±0.115 dB step error), 40Ω typical wiper resistance, 100k-cycle EEPROM endurance, and compatibility with 5V CMOS logic interfaces.
Technical Context
The X9C303S8ZT1 implements a 7-bit up/down counter driving a 100-position decoder across a 99-element logarithmic resistor array. Wiper movement follows make-before-break switching to prevent open-circuit transients during tap transitions.
Control uses a three-wire serial interface (CS, U/D, INC) with negative-edge-triggered INC input and direction-selectable U/D logic. Nonvolatile storage occurs on CS↑ while INC = HIGH, retaining settings for 100 years at +55°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| End-to-End Resistance | 32kΩ ±15% - defines total resistive range for voltage divider or current-limiting use |
| Wiper Tap Count | 100 positions - enables fine-grained logarithmic adjustment matching human perception curves |
| Terminal Voltage Range | ±5V - supports bipolar signal conditioning without external level-shifting circuitry |
| Wiper Resistance | 40Ω typical - minimizes insertion loss in precision analog paths |
| Active Supply Current | 3mA max at 5V - compatible with low-power microcontroller I/O drive capability |
| EEPROM Endurance | 100,000 store cycles - ensures long-term field reliability in recalibration applications |
| Temp. Coefficient | ±400 ppm/°C - maintains resistance stability across industrial temperature range |
Pinout & Package
Package: 8-lead SOIC (150 mil), RoHS-compliant, Pb-free termination.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Positive supply input | 5V ±10% CMOS-compatible power rail; powers internal logic and memory |
| CS | Chip select control | Active-low enable; stores wiper position on rising edge when INC = HIGH |
| VL | Low terminal | Analog ground reference point; accepts –5V to +5V relative to VSS |
| VW | Wiper output | Movable tap point; series resistance ≤100Ω ensures minimal signal degradation |
| INC | Increment clock | Negative-edge-triggered; advances wiper position per transition under CS = LOW |
| U/D | Direction control | Logic level sets wiper movement direction (up/down) during INC transitions |
| VH | High terminal | Upper analog rail; voltage differential |VH–VL| ≤10V defines safe operating range |
| VSS | Ground reference | System common return; required for all internal biasing and logic thresholds |
Key Features
| Feature | Design Value |
|---|---|
| Logarithmic taper | Matches perceptual response in audio volume control and sensor signal scaling |
| Nonvolatile memory | Retains last wiper setting across power cycles without external backup components |
| Make-before-break switching | Prevents momentary open-circuit conditions during wiper transitions |
| Temperature compensation | Stabilizes resistance ratio across –40°C to +85°C operating range |
| Three-wire interface | Reduces MCU GPIO count vs. parallel-controlled potentiometers |
Applications
| Audio Volume Control | Sensor Calibration |
|---|---|
Use Scenario: Adjusting gain in headphone amplifier circuits with user-adjustable volume knobs. IC Role / Device Role / Timing Role: Log-taper digital potentiometer replacing mechanical trimmer in analog signal path. Use Value: Eliminates mechanical wear and provides repeatable, noise-free adjustments via MCU commands. | Use Scenario: Compensating offset and span errors in pressure transducer signal conditioning. IC Role / Device Role / Timing Role: Two-terminal variable resistor in Wheatstone bridge nulling network. Use Value: Enables factory or field recalibration without hardware modification or soldering. |
| Power Supply Feedback | Industrial DAC Offset Trim |
Use Scenario: Dynamically adjusting output voltage setpoint in programmable DC-DC converters. IC Role / Device Role / Timing Role: Three-terminal potentiometer in feedback divider network of voltage regulator IC. Use Value: Allows remote voltage tuning via digital interface while maintaining stable regulation accuracy. | Use Scenario: Fine-tuning zero-scale error in 12-bit industrial DAC output stages. IC Role / Device Role / Timing Role: Precision two-terminal resistor trimming DAC output buffer gain/offset. Use Value: Achieves <1 LSB error correction without requiring high-precision external components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digitally controlled potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5243BRMZ10 | I²C interface, 10kΩ end-to-end, 256 taps, no nonvolatile memory | Requires continuous MCU polling to retain settings; better for dynamic real-time adjustment | Select when I²C bus integration is preferred over simplicity of 3-wire control |
| MCP41010-I/P | Linear taper, SPI interface, 10kΩ, volatile wiper register only | Lacks EEPROM retention; needs external memory or initialization routine at startup | Choose for cost-sensitive linear adjustment where power-cycle persistence is not required |
Compared with AD5243BRMZ10 and MCP41010-I/P, the X9C303S8ZT1 uniquely combines logarithmic taper, nonvolatile storage, and minimal 3-wire interface-making it optimal for audio and calibration systems needing persistent, perceptually accurate settings without protocol overhead.
Availability
X9C303S8ZT1 is available at Aetrix Electronics and suitable for audio equipment manufacturing, industrial sensor calibration, programmable power supply design, and embedded system parameter tuning requiring stable component supply and long-term configuration retention.
Supply support for X9C303S8ZT1 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, designs high-performance analog and mixed-signal ICs for power management, precision analog, and interface applications.
The X9C303S8ZT1 belongs to Intersil's XDCP™ family of digitally controlled potentiometers engineered for replacing mechanical trimmers in audio, instrumentation, and industrial control systems where reliability and digital configurability are critical.
FAQ
What is the maximum allowable voltage across VH and VL terminals for the X9C303S8ZT1?
The X9C303S8ZT1 supports a maximum differential voltage of |VH – VL| ≤ 10V, with each terminal rated for –5V to +5V relative to VSS. Exceeding these limits risks permanent damage to the internal resistor array or switch matrix. This specification ensures safe operation in bipolar signal conditioning circuits without additional clamping components.
Does the X9C303S8ZT1 retain its wiper position after power cycling?
Yes, the X9C303S8ZT1 retains its last stored wiper position in nonvolatile memory for up to 100 years at +55°C. Upon power-up, the device automatically recalls the stored value and configures the wiper accordingly. This behavior eliminates the need for MCU-initiated reinitialization and ensures consistent startup conditions in unattended systems.
Can the X9C303S8ZT1 be used as a two-terminal variable resistor?
Yes, the X9C303S8ZT1 can operate as a two-terminal variable resistor by connecting either VH or VL to VW and using the remaining terminal with VSS or VCC. In this configuration, resistance varies from ~40Ω (wiper at terminal) to 32kΩ (wiper at opposite end), maintaining logarithmic step resolution for applications like sensor gain scaling or LED current limiting.
What is the wiper resistance specification for the X9C303S8ZT1?
The X9C303S8ZT1 has a typical wiper resistance of 40Ω, with a maximum of 100Ω across all tap positions and operating temperatures. This low on-resistance minimizes signal attenuation and thermal noise contribution in precision analog paths, especially critical in high-gain amplifier feedback networks or low-level sensor interfaces.
Is the X9C303S8ZT1 compatible with 3.3V logic systems?
No, the X9C303S8ZT1 requires a 5V ±10% supply (VCC = 4.5V to 5.5V) and specifies VIH = 2.0V minimum and VIL = 0.8V maximum for control inputs. While 3.3V logic may meet input thresholds marginally, reliable operation mandates level-shifting or 5V-compatible MCU I/O to ensure robust CS, U/D, and INC signal recognition and prevent erratic wiper movement.
X9C303S8ZT1 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:
- Logarithmic
- Configuration:
- -
- Number of Circuits:
- 1
- Number of Taps:
- 100
- Resistance (Ohms):
- 32k
- Interface:
- -
- Memory Type:
- Non-Volatile
- Voltage - Supply:
- 4.5V ~ 5.5V
- Features:
- -
- Tolerance:
- -
- Temperature Coefficient (Typ):
- ±400ppm/°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-SOIC
- Operating Temperature:
- 0°C ~ 70°C
- Resistance - Wiper (Ohms) (Typ):
- -
X9C303S8ZT1 FAQ
1.How can I place an order for X9C303S8ZT1 through Aetrix?
Please submit a Request for Quotation (RFQ) for X9C303S8ZT1 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 X9C303S8ZT1 reliable?
The price and inventory of X9C303S8ZT1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X9C303S8ZT1 is usually 5 days.
3.What payment methods are accepted for X9C303S8ZT1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9C303S8ZT1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9C303S8ZT1?
X9C303S8ZT1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9C303S8ZT1 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 X9C303S8ZT1?
For technical support, including X9C303S8ZT1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9C303S8ZT1 requirements.
6.How does Aetrix verify that X9C303S8ZT1 is sourced from the original manufacturer or authorized distributors?
All X9C303S8ZT1 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 X9C303S8ZT1 meets industry standards.
7.What is the process for return or replacement of X9C303S8ZT1?
All X9C303S8ZT1 units undergo pre-shipment inspection (PSI). If there is an issue with X9C303S8ZT1, 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 X9C303S8ZT1 part is unused and in its original packaging.
Return procedure for X9C303S8ZT1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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