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Renesas X9241AMSIT2
- Part No.:
- X9241AMSIT2
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
X9241AMSIT2.pdf
- Description:
- IC DGT POT 2/10/10/50KOHM 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,571
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Product details
Overview
X9241AMSIT2 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 X9241AMSIT2 datasheet, X9241AMSIT2 pinout, X9241AMSIT2 application, or X9241AMSIT2 equivalent, this page delivers verified electrical specs, validated SOIC-20 package mapping, confirmed cascade-mode operation, and real-world design context for embedded analog tuning applications requiring EEPROM-backed wiper position retention.
Technical Context
The X9241AMSIT2 integrates four independent CMOS resistor arrays (63 segments each), each with a volatile 6-bit Wiper Counter Register (WCR) and four nonvolatile Data Registers (DR0–DR3). Wiper position is controlled via I²C commands including Write/Read WCR, Data Register transfer, and real-time Increment/Decrement mode.
Each potentiometer supports cascading (e.g., Pot2→Pot3) using the CM bit in the WCR, enabling combined resistance values from 4kΩ to 200kΩ. The device operates at up to 100kHz I²C clock frequency, with tWR = 10ms nonvolatile write time and tSTPWV = 500µs wiper response after STOP.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Interface | 2-wire I²C-compatible bus (SCL/SDA), slave-only operation with 7-bit address (0101xxx) |
| Resolution | 64 taps per potentiometer (6-bit WCR), enabling 1.56% step resolution across full scale |
| Resistance Values | Factory-configured per channel: Pot0=2kΩ, Pot1=10kΩ, Pot2=10kΩ, Pot3=50kΩ - fixed per X9241AMSIT2 ordering variant |
| Nonvolatile Memory | 16 bytes (4×4 registers), 100,000 write cycles endurance, 100-year data retention at +25°C |
| Terminal Voltage Range | −3.0V to +5V referenced to VSS - supports bipolar analog signal conditioning |
| Supply Current | 3mA active (fSCL=100kHz), 200–500µA standby - optimized for low-power embedded systems |
| Package | 20-lead SOIC (RoHS-compliant, Pb-free matte tin finish), 7.5mm × 12.8mm footprint |
Pinout & Package
Package: 20-lead SOIC (Small Outline Integrated Circuit), RoHS-compliant, body width 7.5mm, lead pitch 1.27mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Positive supply rail | 5V ±10% input; powers internal logic and resistor arrays; must ramp first during power-up |
| VSS | Ground reference | System common return; all voltages referenced to this node |
| SCL | Serial clock input | Asynchronous I²C clock; controls timing of data transfers; requires external pull-up |
| SDA | Serial data bidirectional | Open-drain I²C data line; requires external pull-up; supports ACK polling |
| A0–A3 | Device address inputs | Set LSBs of 7-bit slave address (0101xxx); determine I²C bus addressing uniqueness |
| VH0/RH0 – VH3/RH3 | High-side pot terminals | Fixed end of resistor array per channel; VHn = RHn; connect to positive signal rail or reference |
| VL0/RL0 – VL3/RL3 | Low-side pot terminals | Fixed end of resistor array per channel; VLn = RLn; connect to ground or negative rail |
| VW0/RW0 – VW3/RW3 | Wiper outputs | Variable tap point per channel; RWn = VWn; electrically isolated when DW bit = 1 |
Key Features
| Feature | Design Value |
|---|---|
| Quad independent XDCP arrays | Four fully isolated 64-tap potentiometers on one die - eliminates board space and BOM count vs discrete solutions |
| Register-oriented I²C protocol | Direct read/write of WCR and DR0–DR3; global transfer commands enable synchronized multi-channel updates |
| Cascade mode support | CM bit enables inter-pot linking (e.g., Pot2→Pot3); extends effective resistance range up to 200kΩ with single-wiper control |
| Power-up wiper recall | Automatically loads DR0 into WCR at power-on - ensures repeatable startup state without host initialization |
| Wiper disable function | DW bit (bit 6 of WCR) disconnects wiper terminal - prevents loading or leakage in standby or fault conditions |
Applications
| Programmable Power Supply Trim | Sensor Signal Conditioning |
|---|---|
Use Scenario: Adjusting feedback divider ratio in DC-DC converter error amplifiers to maintain precise output voltage under load and temperature variation. IC Role / Device Role / Timing Role: Four-channel analog trim element; Pot0 and Pot1 set VOUT high/low thresholds; Pot2 adjusts current limit; Pot3 calibrates thermal foldback. Use Value: Enables factory and field calibration without hardware changes; nonvolatile storage retains settings across power cycles. |
Use Scenario: Compensating offset and gain drift in bridge-based pressure or temperature sensors before ADC input. IC Role / Device Role / Timing Role: Precision analog front-end trim component; Pot0–Pot3 independently adjust zero-point offset, span gain, cold-junction compensation, and filter cutoff. Use Value: Achieves <±0.1% full-scale accuracy post-calibration; 100-year data retention avoids recalibration in sealed industrial modules. |
| Audio Channel Balance Control | Industrial DAC Output Scaling |
Use Scenario: Implementing digitally adjustable left/right channel volume balance in professional audio mixers with mute/solo functions. IC Role / Device Role / Timing Role: Dual-channel variable resistor (Pot0+Pot1 as L/R attenuators); Pot2 configures mute threshold; Pot3 sets solo boost level. Use Value: Eliminates mechanical pot wear; 64-step resolution provides smooth, repeatable user adjustment with I²C host control. |
Use Scenario: Scaling full-scale output of 12-bit DACs to match varying actuator input ranges (e.g., 0–5V, 0–10V, ±10V) in PLC analog output modules. IC Role / Device Role / Timing Role: Programmable gain/attenuation stage; Pot0–Pot3 configure scaling factors for four independent DAC channels. Use Value: Supports multi-range analog outputs from single PCB design; cascade mode enables 0–20V scaling using two 10kΩ pots in series. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5242BRUZ10 | Single 256-tap channel, 10kΩ, I²C interface; no cascade mode; 24-lead TSSOP | Lacks quad integration and nonvolatile DR0 auto-recall; requires external EEPROM for power-up state | Select when higher resolution (256-tap) is critical and quad integration is unnecessary |
| MCP42010-I/P | Dual 256-tap channels, 10kΩ, SPI interface; volatile-only wiper; 14-pin PDIP/SOIC | No nonvolatile memory; no cascade capability; SPI instead of I²C; lower pin count but fewer channels | Choose for SPI-based microcontrollers where I²C bus is congested and EEPROM backup is handled externally |
Compared with AD5242BRUZ10 and MCP42010-I/P, the X9241AMSIT2 uniquely delivers quad-channel integration with factory-matched 2kΩ/10kΩ/10kΩ/50kΩ arrays, automatic DR0-to-WCR power-up recall, and hardware-supported cascade mode - reducing system-level calibration complexity and PCB area in multi-parameter analog tuning applications.
Availability
X9241AMSIT2 is available at Aetrix Electronics and suitable for programmable power supplies, sensor calibration systems, audio equipment, and industrial DAC scaling applications requiring stable component supply and long-term obsolescence management.
Supply support for X9241AMSIT2 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 power management ICs for industrial, infrastructure, and computing markets.
The X9241A family was engineered specifically for embedded analog parameter tuning - delivering nonvolatile digital potentiometer functionality with I²C simplicity, multi-channel integration, and robust industrial-grade reliability.
FAQ
What is the exact resistance configuration of the X9241AMSIT2?
The X9241AMSIT2 has a fixed per-channel resistance configuration: Pot0 = 2kΩ, Pot1 = 10kΩ, Pot2 = 10kΩ, Pot3 = 50kΩ. This arrangement is specified in the Ordering Information table (Page 2, FN8164 Rev 7.00) and cannot be altered post-manufacture. Each array maintains ±20% end-to-end resistance tolerance.
Does the X9241AMSIT2 support true I²C bus communication?
Yes, the X9241AMSIT2 implements a standard I²C-compatible 2-wire interface with open-drain SDA and Schmitt-triggered SCL inputs. It responds to 7-bit slave addresses (0101xxx), supports ACK polling, repeated START, and adheres to I²C timing limits up to 100kHz - confirmed in AC Electrical Specifications (Page 12).
How does power-up wiper recall work on the X9241AMSIT2?
On power-up, the X9241AMSIT2 automatically loads the contents of Data Register 0 (DR0) for each potentiometer into its corresponding Wiper Counter Register (WCR). This behavior is hardwired and occurs without host intervention, ensuring repeatable startup states - detailed in "Power-up Requirements" (Page 11) and "Wiper Counter Register" (Page 8).
Can the X9241AMSIT2 operate with negative voltages on its potentiometer terminals?
Yes, the X9241AMSIT2 supports terminal voltages from −3.0V to +5V relative to VSS, enabling bipolar signal conditioning. This is explicitly stated in "Features" (Page 1) and "Absolute Maximum Ratings" (Page 10), allowing use in AC-coupled or dual-supply analog circuits where VL/RL or VH/RH may swing below ground.
What is the maximum wiper current rating for each potentiometer in the X9241AMSIT2?
The X9241AMSIT2 specifies different maximum wiper currents by resistance value: ±4mA for the 2kΩ array (Pot0), and ±3mA for the 10kΩ (Pot1, Pot2) and 50kΩ (Pot3) arrays - per "Absolute Maximum Ratings" (Page 10). Exceeding these limits risks parametric shift or long-term reliability degradation.
X9241AMSIT2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- XDCP™
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Taper:
- Linear
- Configuration:
- Potentiometer
- Number of Circuits:
- 4
- Number of Taps:
- 64
- Resistance (Ohms):
- 2k, 10k, 10k, 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
X9241AMSIT2 FAQ
1.How can I place an order for X9241AMSIT2 through Aetrix?
Please submit a Request for Quotation (RFQ) for X9241AMSIT2 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 X9241AMSIT2 reliable?
The price and inventory of X9241AMSIT2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X9241AMSIT2 is usually 5 days.
3.What payment methods are accepted for X9241AMSIT2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9241AMSIT2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9241AMSIT2?
X9241AMSIT2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9241AMSIT2 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 X9241AMSIT2?
For technical support, including X9241AMSIT2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9241AMSIT2 requirements.
6.How does Aetrix verify that X9241AMSIT2 is sourced from the original manufacturer or authorized distributors?
All X9241AMSIT2 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 X9241AMSIT2 meets industry standards.
7.What is the process for return or replacement of X9241AMSIT2?
All X9241AMSIT2 units undergo pre-shipment inspection (PSI). If there is an issue with X9241AMSIT2, 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 X9241AMSIT2 part is unused and in its original packaging.
Return procedure for X9241AMSIT2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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