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Renesas X9241AMPIZ
- Part No.:
- X9241AMPIZ
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 20-DIP (0.300", 7.62mm)
- Datasheet:
-
X9241AMPIZ.pdf
- Description:
- IC DGT POT 2/10/10K/50KOHM 20DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,519
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Product details
Overview
X9241AMPIZ from Intersil is a quad digital controlled potentiometer (XDCP™) IC with nonvolatile storage, 2-wire I²C interface, 64-tap resolution per channel, and factory-programmed resistor values of 2kΩ, 10kΩ, 10kΩ, and 50kΩ. It operates across –40°C to +85°C and integrates four independent CMOS resistor arrays with volatile wiper counters and four nonvolatile data registers per channel for configuration retention.
For engineers reviewing the X9241AMPIZ datasheet, X9241AMPIZ pinout, X9241AMPIZ application, or X9241AMPIZ equivalent, this device supports precision analog trimming in industrial sensor conditioning, programmable gain control in instrumentation amplifiers, multi-channel bias adjustment in power supplies, and cascaded resistance scaling up to 200kΩ.
Technical Context
The X9241AMPIZ implements four independent 63-segment resistor arrays, each controlled by a 6-bit volatile Wiper Counter Register (WCR) decoded to select one of 64 tap points. Each array connects to dedicated VH/RH, VL/RL, and VW/RW terminals, supporting three-terminal potentiometer or two-terminal variable resistor configurations.
It uses a standard 2-wire I²C-compatible interface with slave address formed by fixed 0101b prefix and user-configurable A0–A3 pins. Communication includes read/write to WCR or any of four nonvolatile Data Registers (DR0–DR3), global transfers, and real-time increment/decrement via SCL clocked edge detection on SDA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resistor Values | Pot 0 = 2kΩ, Pot 1 = 10kΩ, Pot 2 = 10kΩ, Pot 3 = 50kΩ - enables mixed-gain or multi-range analog tuning without external components |
| Resolution | 64 taps per potentiometer - provides 1.56% step resolution for fine-grained analog control |
| Interface | 2-wire I²C-compatible bus - allows daisy-chaining with other I²C devices using shared SCL/SDA lines and address pins A0–A3 |
| Nonvolatile Memory | 16 bytes (4 registers × 4 pots) - stores wiper positions with 100-year data retention and 100,000 write cycles per register |
| Operating Temp | –40°C to +85°C - qualified for industrial-grade embedded systems requiring extended thermal reliability |
| Supply Voltage | 5V ±10% - compatible with standard 5V logic rails and tolerant of nominal supply variation |
| Power Consumption | 3mA active / 500µA standby - supports low-power operation in always-on monitoring circuits |
Pinout & Package
20-lead plastic DIP (PDIP) package, RoHS-compliant, through-hole mountable. Pin 1 marked with notch or dot; top-view orientation as shown in datasheet Figure on page 3.
| 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; supports wire-OR with other open-drain devices and requires pull-up |
| A0–A3 | Slave Address Inputs | Set LSBs of 7-bit I²C slave address (0101xxxxb); enable up to 16 devices on same bus |
| VCC | Positive Supply | 5V ±10% main power rail; must ramp monotonically to ≥90% before applying signals to pot pins |
| VSS | Ground Reference | System ground return for logic and analog sections; must be low-impedance and noise-isolated |
| VH0/RH0 – VH3/RH3 | High-Side Pot Terminals | Fixed end of each resistor array; connect to positive reference or signal source |
| VL0/RL0 – VL3/RL3 | Low-Side Pot Terminals | Fixed end of each resistor array; connect to ground or negative reference |
| VW0/RW0 – VW3/RW3 | Wiper Outputs | Variable tap point output; electrically isolated when DW bit set; supports cascade mode via external wiring |
Key Features
| Feature | Design Value |
|---|---|
| Quad Independent Arrays | Four fully isolated 2k/10k/10k/50kΩ resistor networks on single die - eliminates board space and matching errors of discrete pots |
| Cascade Mode Support | CM bit in WCR enables inter-array linking (e.g., Pot2→Pot3) to synthesize 4k–200kΩ values - avoids external series resistors |
| Wiper Disable (DW Bit) | Bit 6 of WCR disables wiper output, floating VW/RW terminal - prevents loading during calibration or power-down states |
| Power-Up Recall | Automatic load of DR0 into WCR at VCC rise - ensures known startup state without host initialization sequence |
| Increment/Decrement Command | Real-time wiper stepping via SCL edges while SDA held HIGH/LOW - enables knob-like analog tuning without register reads/writes |
Applications
| Industrial Sensor Calibration | Programmable Gain Amplifier |
|---|---|
|
Use Scenario: Calibrating offset and span of temperature, pressure, or current sensors in field-deployed equipment. IC Role / Device Role / Timing Role: Four-channel analog trim element adjusting bridge excitation, amplifier feedback, and reference divider ratios. Use Value: Nonvolatile storage retains calibration across power cycles; 64-tap resolution enables <±0.5% full-scale adjustment accuracy. |
Use Scenario: Configuring gain of instrumentation amplifiers in data acquisition modules with software-selectable ranges. IC Role / Device Role / Timing Role: Digitally reconfigurable feedback network for op-amp-based PGA stages. Use Value: Cascadable 2k–50kΩ arrays support 1× to 100× gain steps; I²C interface enables dynamic range switching during runtime. |
| Multi-Output Power Supply Trim | Audio Channel Balance Control |
|
Use Scenario: Fine-tuning individual output voltages in multi-rail DC/DC converters for FPGA, ASIC, or memory subsystems. IC Role / Device Role / Timing Role: Independent voltage divider for each regulator's feedback node, enabling per-rail margining and compensation. Use Value: Four distinct resistance values match different feedback divider requirements; DR0 recall ensures safe boot-up voltage levels. |
Use Scenario: Implementing stereo channel balance in professional audio mixers or DAC output stages. IC Role / Device Role / Timing Role: Dual-channel attenuator network controlling left/right signal amplitude prior to summing or output drivers. Use Value: Matched 10kΩ arrays (Pots 1 & 2) ensure channel-to-channel tracking within ±1% linearity error; 64-step resolution yields 0.5dB step size. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digitally controlled potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5242BRUZ10 | Single 10kΩ dual-channel I²C DCP; 256-tap resolution; no cascade mode; ±30ppm/°C tempco | Lacks quad architecture and mixed-value arrays; better suited for high-resolution dual-channel use only | Select when higher resolution (256-tap) and tighter tempco are prioritized over multi-value flexibility |
| MCP42010-I/P | Dual 10kΩ SPI interface; 256-tap; volatile-only memory; no nonvolatile registers or cascade capability | Requires external EEPROM for power-up state retention; incompatible bus protocol and memory model | Choose for SPI-based systems where nonvolatile storage is handled externally and dual-channel suffices |
Compared with AD5242BRUZ10 and MCP42010-I/P, the X9241AMPIZ uniquely delivers four independently configurable potentiometers with factory-mixed resistance values, integrated nonvolatile storage per channel, and hardware-supported cascade mode - making it optimal for compact, self-contained multi-parameter analog tuning without firmware overhead or external memory.
Availability
X9241AMPIZ is available at Aetrix Electronics and suitable for industrial sensor calibration, programmable gain amplifier design, multi-output power supply trim, and audio channel balance control requiring stable component supply across extended temperature ranges.
Supply support for X9241AMPIZ 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 leading provider of precision analog and power management solutions, now part of Renesas Electronics, with deep expertise in high-reliability industrial and infrastructure ICs.
The X9241A family was designed specifically for replacing mechanical potentiometers in automated calibration, closed-loop control, and adaptive analog signal conditioning systems requiring nonvolatile configuration retention.
FAQ
What is the resistor value configuration for each potentiometer in the X9241AMPIZ?
The X9241AMPIZ has factory-programmed resistor values: Potentiometer 0 = 2kΩ, Potentiometer 1 = 10kΩ, Potentiometer 2 = 10kΩ, and Potentiometer 3 = 50kΩ. These values are fixed per the ordering information table in the FN8164 datasheet and cannot be altered post-manufacture. This mixed-value arrangement allows simultaneous optimization of different analog paths - for example, low-value for current-sense shunt scaling and high-value for high-impedance reference dividers - within a single X9241AMPIZ device.
Does the X9241AMPIZ support true I²C compliance, including ACK polling during nonvolatile writes?
Yes, the X9241AMPIZ supports full I²C protocol compliance, including START/STOP conditions, 7-bit slave addressing with A0–A3 inputs, and ACK polling during nonvolatile write operations. After issuing a Write Data Register command, the host can immediately initiate ACK polling by sending START + slave address; the X9241AMPIZ will withhold ACK until its internal 10ms EEPROM write completes. This behavior is explicitly documented in the "Acknowledge Polling" section (page 4) of the FN8164 Rev 7.00 datasheet for X9241AMPIZ.
How does the cascade mode function in the X9241AMPIZ, and which pins must be connected externally?
In cascade mode, enabled by setting the CM bit (bit 7) in a potentiometer's Wiper Counter Register, the VL/RL terminal of a higher-order pot (e.g., Pot2) is connected externally to the VH/RH terminal of the next lower-order pot (e.g., Pot1). The X9241AMPIZ requires that all but one wiper be disabled (via DW bit) and that VH/RH, VL/RL, and VW/RW terminals be wired accordingly. For example, cascading Pot0→Pot1→Pot2→Pot3 creates a 200kΩ total resistance. This mode is confirmed in Figure 9 and the "Cascade Mode" section (page 9) of the X9241AMPIZ datasheet.
What is the power-up behavior of the X9241AMPIZ, and how is wiper position restored after reset?
On power-up, the X9241AMPIZ automatically loads the contents of Data Register 0 (DR0) for each potentiometer into its corresponding volatile Wiper Counter Register (WCR), restoring the last stored wiper position. This recall occurs without host intervention and is guaranteed if VCC ramps monotonically to ≥90% before applying signals to pot pins, per the "Power-up Requirements" section (page 11) of the FN8164 datasheet. DR0 values persist for 100 years, ensuring reliable boot-state recovery for X9241AMPIZ in unattended systems.
Can the X9241AMPIZ operate with supply voltages other than 5V, and what are the absolute limits?
The X9241AMPIZ is specified for VCC = 5V ±10%, i.e., 4.5V to 5.5V. Absolute maximum ratings permit up to +7V on address or clock pins relative to VSS, but sustained operation outside 4.5–5.5V violates recommended conditions and risks parametric failure or reduced endurance. The "Absolute Maximum Ratings" table (page 10) and "Recommended Operating Conditions" (page 10) both confirm 5V ±10% as the valid operating window for X9241AMPIZ - no 3.3V or 10V variants exist in this specific part number.
X9241AMPIZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- XDCP™
- Package/Case:
- 20-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- 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:
- Through Hole
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 20-PDIP
- Operating Temperature:
- -40°C ~ 85°C
- Resistance - Wiper (Ohms) (Typ):
- 40
X9241AMPIZ FAQ
1.How can I place an order for X9241AMPIZ through Aetrix?
Please submit a Request for Quotation (RFQ) for X9241AMPIZ 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 X9241AMPIZ reliable?
The price and inventory of X9241AMPIZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X9241AMPIZ is usually 5 days.
3.What payment methods are accepted for X9241AMPIZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9241AMPIZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9241AMPIZ?
X9241AMPIZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9241AMPIZ 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 X9241AMPIZ?
For technical support, including X9241AMPIZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9241AMPIZ requirements.
6.How does Aetrix verify that X9241AMPIZ is sourced from the original manufacturer or authorized distributors?
All X9241AMPIZ 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 X9241AMPIZ meets industry standards.
7.What is the process for return or replacement of X9241AMPIZ?
All X9241AMPIZ units undergo pre-shipment inspection (PSI). If there is an issue with X9241AMPIZ, 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 X9241AMPIZ part is unused and in its original packaging.
Return procedure for X9241AMPIZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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