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Renesas X9C303S8IZ-2.7
- Part No.:
- X9C303S8IZ-2.7
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
X9C303S8IZ-2.7.pdf
- Description:
- IC XDCP 100-TAP 32K EE 8-SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,022
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Product details
Overview
X9C303S8IZ-2.7 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, temperature-compensated, log-taper trim device in analog signal conditioning circuits requiring stable, repeatable gain or offset adjustment.
For engineers reviewing the X9C303S8IZ-2.7 datasheet, X9C303S8IZ-2.7 pinout, X9C303S8IZ-2.7 application, or X9C303S8IZ-2.7 equivalent, this device delivers precise logarithmic taper control for audio volume, sensor calibration, and power supply feedback loop trimming - all with RoHS-compliant Pb-free SOIC-8 packaging and industrial-grade (-40°C to +85°C) operation.
Technical Context
The X9C303S8IZ-2.7 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, ensuring continuity during tap transitions, and supports both three-terminal potentiometer and two-terminal variable resistor configurations.
Its nonvolatile memory stores wiper position on CS↑ with INC HIGH, enabling automatic recall at power-up. Control logic operates via CS (active-low enable), U/D (direction), and edge-triggered INC inputs - all compatible with 5V CMOS logic levels and supporting ≤2µs minimum INC cycle time.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| End-to-End Resistance | 32kΩ ±15% - defines full-scale analog range for gain/attenuation scaling |
| Taper Type | Logarithmic - matches human perception for audio volume control and exponential sensor response compensation |
| Terminal Voltage Range | ±5V - supports bipolar signal paths without external level-shifting circuitry |
| Wiper Resistance | 40Ω typical - minimizes insertion error in low-impedance feedback networks |
| Nonvolatile Storage | 100,000 write cycles / 100-year retention - enables field-programmable calibration without battery backup |
| Supply Current | 3mA max active, 750µA max standby - suitable for low-power embedded systems with intermittent adjustment needs |
| Operating Temperature | -40°C to +85°C - qualified for industrial environments including motor drives and instrumentation |
Pinout & Package
Package: 8-lead SOIC (150 mil), Pb-free (RoHS-compliant), MDP0027 footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Positive supply input | 5V ±10% CMOS-compatible rail; powers internal logic and resistor array biasing |
| CS | Chip select (active-low) | Enables interface; rising edge with INC HIGH triggers nonvolatile store operation |
| VL | Low terminal (potentiometer) | Fixed end of resistor array; referenced to VSS; accepts -5V to +5V potential |
| VW | Wiper terminal | Movable contact point; 40Ω series resistance; connects to one of 100 taps based on counter state |
| INC | Increment control (negative-edge triggered) | Advances or retracts wiper per U/D state; requires ≥1µs LOW/HIGH periods |
| U/D | Up/down direction control | Defines wiper movement direction during INC transitions; may be changed dynamically while CS is LOW |
| VH | High terminal (potentiometer) | Opposite fixed end of array; same voltage rating as VL; polarity relative to VW depends on U/D state |
| VSS | Ground reference | Logic and analog common; must be connected directly to system ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Logarithmic taper | Matches perceptual linearity in audio and sensor interfaces - eliminates need for external lookup tables or microcontroller interpolation |
| Three-wire serial interface | Minimal GPIO usage (CS/U/D/INC) - avoids SPI/I²C peripheral overhead and simplifies firmware integration |
| Nonvolatile wiper storage | Preserves last-set value across power cycles - critical for factory-trimmed systems and field recalibration without host intervention |
| Temperature-compensated array | ±400 ppm/°C end-to-end drift and ±20 ppm/°C ratiometric stability at tap 84 - ensures consistent transfer function over industrial temperature range |
| Make-before-break switching | Prevents open-circuit transients during wiper movement - essential for stable operation in closed-loop feedback paths |
Applications
| Audio Volume Control | Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Adjusting gain in analog audio preamplifier stages for consumer and professional equipment. IC Role / Device Role / Timing Role: Log-taper digital potentiometer replacing mechanical pots in feedback path of op-amp-based amplifier. Use Value: Enables silent, jitter-free volume changes with factory-set default level retained after power loss - no microcontroller required for basic operation. |
Use Scenario: Calibrating offset and span of thermistor or RTD front-end circuits in industrial temperature monitors. IC Role / Device Role / Timing Role: Two-terminal variable resistor in Wheatstone bridge or op-amp gain-setting network. Use Value: Provides traceable, repeatable calibration points stored in nonvolatile memory - eliminates manual trimpot drift and rework during production test. |
| Power Supply Feedback Trimming | Industrial DAC Output Scaling |
|
Use Scenario: Fine-tuning output voltage of isolated DC-DC converters in telecom and server PSUs. IC Role / Device Role / Timing Role: Three-terminal potentiometer in resistive divider network feeding voltage feedback pin of PWM controller. Use Value: Allows post-manufacturing output adjustment within ±1% tolerance while maintaining isolation integrity - no soldering required in final assembly. |
Use Scenario: Scaling full-scale range of 12-bit DAC outputs to match varying sensor input ranges in programmable logic controllers. IC Role / Device Role / Timing Role: Programmable gain element between DAC output and analog multiplexer input stage. Use Value: Supports multiple sensor types via software-configurable gain without hardware change - reduces BOM variants and field service complexity. |
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 | 2-channel I²C interface, 10kΩ, linear taper, 2.7–5.5V supply | Lacks nonvolatile storage; requires continuous host communication for setting retention | Select when multi-channel control or I²C bus integration outweighs need for standalone power-cycle persistence |
| MCP41HV51-103 | Single-channel SPI interface, 10kΩ, linear taper, ±12V tolerant terminals | Higher voltage rating but no log taper or built-in NV memory - external EEPROM needed for recall | Prefer for high-voltage industrial analog front-ends where log taper is not required and SPI is already used |
Compared with AD5243BRMZ10 and MCP41HV51-103, the X9C303S8IZ-2.7 uniquely combines logarithmic taper, ±5V bipolar operation, and autonomous nonvolatile recall in a minimal 3-wire interface - making it optimal for cost-sensitive, self-contained analog trimming tasks without MCU dependency.
Availability
X9C303S8IZ-2.7 is available at Aetrix Electronics and suitable for industrial sensor calibration, audio volume control, power supply feedback trimming, and programmable gain amplifier design requiring stable component supply across extended temperature ranges.
Supply support for X9C303S8IZ-2.7 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 focused on power management, precision analog, and interface solutions for industrial, computing, and communications markets.
The X9C303 product line delivers digitally programmable analog resistance elements optimized for factory calibration, field tuning, and replacement of mechanical potentiometers in noise-sensitive, space-constrained, and reliability-critical applications.
FAQ
What is the maximum allowable voltage across VH and VL terminals for the X9C303S8IZ-2.7?
The X9C303S8IZ-2.7 supports a maximum differential voltage of |VH − VL| = 10V, with each terminal rated from −5V to +5V relative to VSS. Exceeding these limits risks permanent damage to the internal resistor array or switches. The device is not rated for AC-coupled or floating-terminal operation beyond these absolute maximums.
Does the X9C303S8IZ-2.7 require an external microcontroller to retain its wiper position after power cycling?
No. The X9C303S8IZ-2.7 contains integrated nonvolatile memory that automatically stores the current wiper position upon a valid store command (CS rising edge with INC HIGH). Upon power-up, the device recalls this value and configures the wiper accordingly - no external controller or EEPROM is needed for basic recall functionality.
Can the X9C303S8IZ-2.7 be used in a two-terminal configuration, and what is its effective resistance range?
Yes. The X9C303S8IZ-2.7 supports two-terminal use (e.g., VL–VW or VW–VH), delivering a logarithmic resistance range from ~40Ω (wiper at terminal) to 32kΩ (full scale), with step resolution defined by the 100-tap log distribution. Wiper resistance remains ~40Ω regardless of position, contributing directly to minimum achievable resistance.
What is the timing requirement for reliable wiper movement on the X9C303S8IZ-2.7?
The X9C303S8IZ-2.7 requires a minimum INC HIGH period (tlH) and LOW period (tlL) of 1µs each, with a minimum INC cycle time (tCYC) of 2µs. Setup times of 100ns for CS-to-INC and 2.9µs for U/D-to-INC must also be observed. Violating these violates guaranteed operation per FN8223 Rev 2.00.
Is the X9C303S8IZ-2.7 RoHS compliant, and what does the "Z" suffix indicate in its part number?
Yes. The "Z" suffix in X9C303S8IZ-2.7 denotes Pb-free (RoHS-compliant) construction using 100% matte tin plating and annealed terminations. It is qualified for standard reflow profiles and compatible with both SnPb and lead-free soldering processes - confirmed per Intersil's Pb-Free Reflow Profile documentation.
X9C303S8IZ-2.7 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:
- 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:
- -40°C ~ 85°C
- Resistance - Wiper (Ohms) (Typ):
- -
X9C303S8IZ-2.7 FAQ
1.How can I place an order for X9C303S8IZ-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for X9C303S8IZ-2.7 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 X9C303S8IZ-2.7 reliable?
The price and inventory of X9C303S8IZ-2.7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X9C303S8IZ-2.7 is usually 5 days.
3.What payment methods are accepted for X9C303S8IZ-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9C303S8IZ-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9C303S8IZ-2.7?
X9C303S8IZ-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9C303S8IZ-2.7 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 X9C303S8IZ-2.7?
For technical support, including X9C303S8IZ-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9C303S8IZ-2.7 requirements.
6.How does Aetrix verify that X9C303S8IZ-2.7 is sourced from the original manufacturer or authorized distributors?
All X9C303S8IZ-2.7 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 X9C303S8IZ-2.7 meets industry standards.
7.What is the process for return or replacement of X9C303S8IZ-2.7?
All X9C303S8IZ-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with X9C303S8IZ-2.7, 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 X9C303S8IZ-2.7 part is unused and in its original packaging.
Return procedure for X9C303S8IZ-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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