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Renesas X9241AUSIZT1
- Part No.:
- X9241AUSIZT1
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
X9241AUSIZT1.pdf
- Description:
- IC DGTL POT 50KOHM 64TAP 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,212
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Product details
Overview
X9241AUSIZT1 from Intersil is a quad digital controlled potentiometer (XDCP™) IC with nonvolatile storage, 2-wire I²C interface, 64-tap resolution per channel, ±3.0V to +5V terminal voltage range, and 2kΩ/10kΩ/50kΩ selectable resistor arrays - used for precision analog trimming in programmable power supplies, sensor calibration circuits, and audio level control systems.
For engineers reviewing the X9241AUSIZT1 datasheet, X9241AUSIZT1 pinout, X9241AUSIZT1 application, or X9241AUSIZT1 equivalent, key selection considerations include wiper position retention after power loss, cascading capability across four arrays, 100-year nonvolatile data retention, and industrial temperature support (-40°C to +85°C).
Technical Context
The X9241AUSIZT1 implements four independent 63-element resistor arrays with digitally controlled FET-switched wipers, each managed by a volatile 6-bit Wiper Counter Register (WCR) and four nonvolatile Data Registers (DR0–DR3). Power-up automatically loads DR0 into the WCR for deterministic startup behavior.
It uses a standard 2-wire I²C-compatible interface with slave address formed by fixed 0101b prefix plus user-configurable A0–A3 pins. All register reads/writes and wiper transfers (including global operations) are supported via defined instruction byte formats, with ACK polling enabled during nonvolatile writes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Number of Potentiometers | Four independent channels on single die - enables compact multi-channel analog adjustment without discrete components. |
| Resistor Array Values | 2kΩ, 10kΩ, 50kΩ per channel (X9241AUSIZT1 = 2k/10k/10k/50k configuration) - supports mixed-impedance system tuning. |
| Resolution | 64 taps (6-bit wiper control) - provides ~1.6% step resolution for fine-grained analog parameter control. |
| Nonvolatile Memory | 16 bytes (4 registers × 4 pots) with 100-year data retention - preserves calibration settings across decades of operation. |
| Interface Protocol | 2-wire I²C-compatible bus (SCL/SDA), 100kHz max clock - integrates directly with microcontrollers without protocol translation. |
| Operating Temperature | -40°C to +85°C - qualified for industrial-grade embedded systems and automotive under-hood auxiliary modules. |
| Power Supply | VCC = 5V ±10%; terminal voltage range = -3.0V to +5V - supports bipolar signal conditioning and rail-to-rail analog interfacing. |
Pinout & Package
Package: 20-lead SOIC (Small Outline Integrated Circuit), RoHS-compliant, surface-mount, body width 7.5mm, lead pitch 1.27mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SCL | Serial Clock Input | Asynchronous master-generated clock synchronizing all I²C transactions; requires external pull-up. |
| SDA | Serial Data Bidirectional | Open-drain I²C data line shared across multiple slaves; requires external pull-up resistor. |
| A0–A3 | Slave Address Inputs | Set LSBs of 8-bit I²C slave address (0101xxxxb); enable up to 16 devices on same bus. |
| VH0/RH0 – VH3/RH3 | Potentiometer High-Side Terminals | Fixed end of each resistor array; connect to positive reference or signal source. |
| VL0/RL0 – VL3/RL3 | Potentiometer Low-Side Terminals | Fixed end of each resistor array; connect to ground, negative rail, or return path. |
| VW0/RW0 – VW3/RW3 | Wiper Outputs | Switched tap point controlled by WCR; electrically isolated when DW bit = 1. |
| VCC | Positive Supply | 5V ±10% digital/analog supply; powers logic, interface, and internal switches. |
| VSS | Ground Reference | Common return for digital logic, analog arrays, and interface circuitry. |
Key Features
| Feature | Design Value |
|---|---|
| Quad XDCP Architecture | Four fully independent potentiometers share one I²C interface - reduces PCB area and BOM count vs. discrete solutions. |
| Cascadable Resistor Arrays | Supports series connection of adjacent arrays (e.g., POT2→POT3) to synthesize 4kΩ–200kΩ values - eliminates need for external resistors in wide-range tuning. |
| Wiper Disable Control (DW bit) | Bit 6 of WCR disables wiper output, placing VWx/RWx in high-impedance float state - enables safe reconfiguration without signal injection. |
| Cascade Mode Control (CM bit) | Bit 7 of WCR enables inter-pot cascading; wiper transitions automatically between arrays during increment/decrement - simplifies multi-kΩ linear sweep design. |
| Endurance & Retention | 100,000 write cycles per register bit and 100-year data retention - suitable for field-deployed equipment requiring long-term calibration stability. |
Applications
| Programmable DC-DC Converter Feedback | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Adjusting feedback divider ratio in isolated flyback or buck-boost converters to maintain precise output voltage across load and temperature variations. IC Role / Device Role / Timing Role: Digital potentiometer replacing mechanical trimmer in voltage feedback loop; wiper position set via I²C during factory calibration or runtime compensation. Use Value: Enables closed-loop recalibration without hardware modification; nonvolatile DR0 recall ensures consistent startup output voltage after power cycling. |
Use Scenario: Compensating offset and gain errors in 4–20mA current-loop transmitters using RTD or strain gauge sensors in factory automation systems. IC Role / Device Role / Timing Role: Four-channel XDCP providing independent zero/gain trims for differential amplifier stages and ADC reference scaling networks. Use Value: Eliminates manual calibration labor; cascaded arrays allow extended gain ranges (e.g., 0.1× to 10×) within single IC footprint. |
| Audio Channel Balance Control | Medical Instrument Analog Front-End Tuning |
Use Scenario: Real-time left/right channel volume balancing in professional audio mixers with digital control via host MCU. IC Role / Device Role / Timing Role: Dual-channel potentiometer (POT0/POT1) acting as programmable attenuators in analog signal path before ADC or DAC stages. Use Value: 64-tap resolution delivers smooth, click-free level transitions; low 120dBV noise floor preserves audio signal integrity. |
Use Scenario: Calibrating input gain and offset in ECG or EEG acquisition front-ends where traceable, repeatable analog adjustments are required per unit. IC Role / Device Role / Timing Role: Precision trimming element in instrumentation amplifier feedback network and reference buffer divider. Use Value: 100-year nonvolatile retention meets medical device regulatory requirements for calibration persistence over product lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5204BRUZ10 | Quad 10kΩ pot, SPI interface, 256-tap resolution, no cascade mode, 50k-cycle endurance | Lacks cascading and wiper disable; requires SPI host instead of I²C | Choose when higher resolution and SPI compatibility outweigh need for nonvolatile retention and cascading. |
| MCP42050-I/SL | Quad 50kΩ pot, SPI interface, volatile-only memory, 128-tap resolution, no nonvolatile registers | No DR0–DR3 storage; wiper resets to mid-scale on power-up | Select for cost-sensitive designs where calibration is performed at boot and long-term retention is unnecessary. |
Compared with AD5204BRUZ10 and MCP42050-I/SL, the X9241AUSIZT1 uniquely combines I²C compatibility, 100-year nonvolatile storage, cascading architecture, and industrial temperature rating - making it optimal for field-deployed systems requiring unattended recalibration and long-term analog stability.
Availability
X9241AUSIZT1 is available at Aetrix Electronics and suitable for programmable power supplies, industrial sensor interfaces, audio mixing systems, and medical instrumentation requiring stable component supply with full traceability and long-lifecycle support.
Supply support for X9241AUSIZT1 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 is a leader in precision analog and power management ICs, now part of Renesas Electronics, delivering high-reliability solutions for industrial, infrastructure, and consumer applications.
The X9241A family was designed specifically for digitally programmable analog trimming in space-constrained, calibration-critical systems - emphasizing nonvolatile configurability, multi-channel integration, and robust I²C interoperability.
FAQ
What is the resistor value configuration for X9241AUSIZT1?
The X9241AUSIZT1 is configured with four independent resistor arrays valued at 2kΩ (POT0), 10kΩ (POT1), 10kΩ (POT2), and 50kΩ (POT3). This specific combination is confirmed in the Ordering Information table on page 2 of FN8164 Rev 7.00, where X9241AUSIZ* denotes the -40°C to +85°C SOIC variant with that exact impedance mapping.
Does X9241AUSIZT1 support true I²C communication?
Yes, the X9241AUSIZT1 implements a fully compatible 2-wire I²C interface with standard START/STOP conditions, ACK polling, and 7-bit slave addressing (0101xxxxb). It operates at up to 100kHz, supports repeated START, and complies with I²C timing parameters including tLOW, tHIGH, and tSU:DAT as specified in the AC Electrical Specifications section.
How does power-up behavior work in X9241AUSIZT1?
On power-up, the X9241AUSIZT1 automatically loads the contents of Data Register 0 (DR0) for each potentiometer into its corresponding volatile Wiper Counter Register (WCR). This ensures deterministic wiper positioning at startup. The datasheet specifies preferred VCC ramp rate (0.2–50 V/ms) and sequencing (VCC before analog pins) to guarantee reliable DR0 recall.
Can the four potentiometers in X9241AUSIZT1 be cascaded together?
Yes - the X9241AUSIZT1 supports cascading any adjacent pair (e.g., POT2→POT3) or all four arrays using the CM (Cascade Mode) bit in the WCR. External connections require linking VL/RL of a higher-order pot to VH/RH of the next lower-order pot. Only one wiper remains active; others must be disabled via the DW bit.
What is the maximum wiper current rating for X9241AUSIZT1 at 50kΩ setting?
For the 50kΩ resistor array in X9241AUSIZT1, the maximum allowable wiper current is ±3mA, as specified in the Absolute Maximum Ratings table (page 10). This derates linearly with temperature and applies regardless of whether the device is operated in potentiometer or variable-resistor mode.
X9241AUSIZT1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- XDCP™
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Taper:
- Linear
- Configuration:
- Potentiometer
- Number of Circuits:
- 4
- Number of Taps:
- 64
- Resistance (Ohms):
- 50k
- Interface:
- I2C
- Memory Type:
- Non-Volatile
- Voltage - Supply:
- 5V
- Features:
- Selectable Address
- Tolerance:
- ±20%
- Temperature Coefficient (Typ):
- ±300ppm/°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 20-SOIC
- Operating Temperature:
- -40°C ~ 85°C
- Resistance - Wiper (Ohms) (Typ):
- 40
X9241AUSIZT1 FAQ
1.How can I place an order for X9241AUSIZT1 through Aetrix?
Please submit a Request for Quotation (RFQ) for X9241AUSIZT1 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 X9241AUSIZT1 reliable?
The price and inventory of X9241AUSIZT1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X9241AUSIZT1 is usually 5 days.
3.What payment methods are accepted for X9241AUSIZT1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9241AUSIZT1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9241AUSIZT1?
X9241AUSIZT1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9241AUSIZT1 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 X9241AUSIZT1?
For technical support, including X9241AUSIZT1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9241AUSIZT1 requirements.
6.How does Aetrix verify that X9241AUSIZT1 is sourced from the original manufacturer or authorized distributors?
All X9241AUSIZT1 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 X9241AUSIZT1 meets industry standards.
7.What is the process for return or replacement of X9241AUSIZT1?
All X9241AUSIZT1 units undergo pre-shipment inspection (PSI). If there is an issue with X9241AUSIZT1, 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 X9241AUSIZT1 part is unused and in its original packaging.
Return procedure for X9241AUSIZT1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
X9241AUSIZT1 Tags
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