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Renesas X9241AMP
- Part No.:
- X9241AMP
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 20-DIP (0.300", 7.62mm)
- Datasheet:
-
X9241AMP.pdf
- Description:
- IC DGT POT 2/10/10K/50KOHM 20DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,339
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Product details
Overview
X9241AMP from Intersil is a quad digital controlled potentiometer (XDCP™) IC with nonvolatile storage, 2-wire I²C interface, and 64-tap resolution per channel. It integrates four independent resistor arrays (2kΩ, 10kΩ, 10kΩ, 50kΩ), each with volatile wiper counter registers and four nonvolatile data registers. Used for precision analog trimming in power supply feedback loops, sensor calibration, and audio level control.
For engineers reviewing the X9241AMP datasheet, X9241AMP pinout, X9241AMP application, or X9241AMP equivalent, this page delivers verified electrical specs, confirmed cascade mode operation, real-world wiper current limits (±3mA/±4mA), and validated 20-pin PDIP package compatibility - all critical for embedded analog tuning and replacement design.
Technical Context
The X9241AMP implements four monolithic CMOS resistor arrays, each with 63 discrete segments and FET-switched wiper taps controlled by a 6-bit Wiper Counter Register (WCR). Each array supports three-terminal potentiometer or two-terminal rheostat configuration, with terminal voltage range of –3.0V to +5V and absolute linearity ±1 MI.
It uses a standard 2-wire I²C-compatible interface with slave address format 0101[A3:A0], supporting read/write to WCR and four nonvolatile data registers (DR0–DR3) per pot. Cascade mode enables inter-array linking via external VH/RH–VL/RL connections, with CM bit control and mandatory wiper disable on non-active arrays.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resistor Array Values | Pot 0 = 2kΩ, Pot 1 = 10kΩ, Pot 2 = 10kΩ, Pot 3 = 50kΩ - fixed per ordering code, enables mixed-gain analog tuning |
| Resolution | 64 taps per potentiometer - provides 1.56% step resolution for precise analog adjustment |
| Interface | 2-wire I²C-compatible serial bus - requires only SCL/SDA with pull-up resistors; supports up to 100kHz clock |
| Nonvolatile Memory | 16 bytes (4 × 4 registers) - stores wiper positions with 100-year data retention and 100,000 write cycles |
| Wiper Current Limit | ±4mA (2kΩ), ±3mA (10kΩ/50kΩ) - defines max safe current through any wiper terminal without degradation |
| Supply Voltage | 5V ±10% - operates from single 4.5V–5.5V rail; power-up recalls DR0 to WCR |
| Operating Temperature | 0°C to +70°C - commercial-grade rating; suitable for industrial control panels and instrumentation |
Pinout & Package
Package: 20-lead plastic DIP (PDIP), RoHS-compliant, through-hole mountable. Pin pitch: 0.100", body width: 0.300". Not intended for reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4 (A0–A3) | Slave Address Inputs | Set LSBs of 8-bit I²C slave address (0101xxxx); determine device selectability on shared bus |
| 5 (SCL) | Serial Clock Input | Asynchronous clock for I²C communication; timing-critical for start/stop and data sampling |
| 6 (SDA) | Serial Data Bidirectional | Open-drain I/O requiring external pull-up; carries commands, addresses, and register data |
| 7–10, 13–16 (VH0–VH3, VL0–VL3) | Potentiometer Terminal Inputs | Fixed end terminals of each resistor array; define voltage span across which wiper operates |
| 11–12, 17–18 (VW0–VW3) | Wiper Outputs | Analog output nodes; electrically isolated when DW bit = 1; position set by WCR value |
| 19 (VSS) | Ground Reference | Primary return path for all analog and digital circuitry; must be low-impedance for noise immunity |
| 20 (VCC) | Power Supply | +4.5V to +5.5V supply; powers internal logic, switches, and register latches |
Key Features
| Feature | Design Value |
|---|---|
| Quad Independent Arrays | Four fully isolated 64-tap potentiometers in one 20-pin PDIP - reduces board space vs. discrete pots or multiple ICs |
| Nonvolatile Register Storage | Four 8-bit DRs per pot (16 total bytes) retain settings for 100 years - eliminates need for external EEPROM in calibration systems |
| Cascade Mode Support | CM bit enables linking adjacent arrays (e.g., Pot2→Pot3) to create 4kΩ–200kΩ values - extends usable resistance range without redesign |
| Wiper Disable Function | DW bit (bit 6 of WCR) floats wiper terminal - prevents loading during standby or cascade operation, improving signal integrity |
| Increment/Decrement Command | Real-time fine-tuning via SCL pulses (HIGH = up, LOW = down) - enables smooth analog adjustment without host CPU overhead |
Applications
| Power Supply Feedback Tuning | Sensor Offset Calibration |
|---|---|
|
Use Scenario: Adjusting reference voltage divider in DC-DC converter feedback loop to maintain precise output regulation under load variation. IC Role / Device Role / Timing Role: Four-channel digital potentiometer providing programmable gain/offset to error amplifier input network. Use Value: Enables factory or field calibration without hardware change; 2kΩ/10kΩ arrays match typical feedback divider impedances while minimizing thermal drift impact. |
Use Scenario: Compensating zero-point offset in bridge-based pressure or temperature sensors before ADC input. IC Role / Device Role / Timing Role: Precision rheostat mode (two-terminal) injecting adjustable bias current into sensor bridge leg. Use Value: Achieves <±1mV offset correction using 64-tap resolution and nonvolatile DR0 recall at power-on - critical for unattended remote sensors. |
| Audio Channel Balance Control | Industrial DAC Output Scaling |
|
Use Scenario: Implementing digitally adjustable left/right channel volume balance in professional audio mixing equipment. IC Role / Device Role / Timing Role: Dual 10kΩ potentiometers (Pots 1 & 2) acting as voltage dividers on analog audio paths. Use Value: 64-step resolution yields ~0.5dB per step; nonvolatile storage retains user preferences across power cycles without microcontroller intervention. |
Use Scenario: Scaling full-scale output of a 12-bit DAC to match variable load requirements in programmable power supplies. IC Role / Device Role / Timing Role: 50kΩ Pot 3 used as programmable gain resistor in op-amp transimpedance stage following DAC. Use Value: Enables dynamic range adaptation from 0–5V to 0–10V outputs using same DAC hardware; cascade mode supports extended scaling ratios. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5204BRZ | Quad 256-tap, SPI interface, 10kΩ nominal per channel, no cascade mode, 50ppm/°C tempco | Higher resolution but lacks cascading and wiper disable; requires SPI controller instead of I²C | Choose for higher precision where I²C bus is unavailable and cascade functionality is unnecessary |
| MCP42050-I/P | Dual 256-tap, SPI interface, 50kΩ per channel, volatile-only memory, 100ppm/°C tempco | No nonvolatile storage; requires external MCU to reload settings on power-up; no multi-pot cascade support | Choose for cost-sensitive designs needing high resolution but accepting volatile operation and simpler interface |
Compared with AD5204BRZ and MCP42050-I/P, the X9241AMP uniquely combines I²C simplicity, nonvolatile storage per pot, and hardware-enabled cascade mode - making it optimal for compact, self-contained analog tuning in power and sensor systems where bus resource count and power-cycle reliability are constrained.
Availability
X9241AMP is available at Aetrix Electronics and suitable for power supply feedback tuning, sensor calibration, audio balance control, and industrial DAC scaling requiring stable component supply and long-term calibration retention.
Supply support for X9241AMP 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, delivering high-reliability solutions for industrial, infrastructure, and high-end consumer markets.
The X9241A family was designed for embedded analog parameter adjustment - enabling software-controlled trimming of gain, offset, and threshold in systems where mechanical potentiometers are impractical or unreliable.
FAQ
What is the exact resistor value configuration for X9241AMP?
The X9241AMP has a fixed per-channel resistance configuration: Potentiometer 0 = 2kΩ, Potentiometer 1 = 10kΩ, Potentiometer 2 = 10kΩ, and Potentiometer 3 = 50kΩ. This specific mix is defined by the ordering code and cannot be altered post-manufacture. The X9241AMP datasheet (FN8164 Rev 7.00, Page 2) confirms this organization under "POTENTIOMETER ORGANIZATION" for part number X9241AMPZ.
Does X9241AMP support true I²C communication or only I²C-compatible timing?
The X9241AMP implements a 2-wire serial interface fully compatible with standard I²C protocol specifications, including START/STOP conditions, ACK/NACK handshaking, and 7-bit slave addressing (with 4-bit device ID 0101). It supports clock frequencies up to 100kHz and requires external pull-up resistors on SCL/SDA. The X9241AMP does not require special master firmware - standard I²C controllers can communicate directly with it.
How does power-up behavior work for X9241AMP wiper positions?
On power-up, the X9241AMP automatically loads the contents of Data Register 0 (DR0) for each potentiometer into its corresponding volatile Wiper Counter Register (WCR), restoring the last stored setting. This occurs after VCC reaches 90% of final value and meets ramp rate requirements (0.2–50 V/ms). The X9241AMP will not recall DR1–DR3 unless explicitly transferred via command - only DR0 is auto-loaded.
Can X9241AMP operate with negative voltages on its potentiometer terminals?
Yes - the X9241AMP supports terminal voltages from –3.0V to +5V relative to VSS, enabling bipolar operation in AC-coupled or dual-supply analog circuits. However, the absolute voltage difference between VH/RH and VL/RL must not exceed 10V, and wiper current must remain within rated limits (±4mA for 2kΩ, ±3mA for 10kΩ/50kΩ). Exceeding these violates Absolute Maximum Ratings and risks permanent damage.
Is cascade mode supported on X9241AMP, and how is it enabled?
Yes, cascade mode is fully supported on X9241AMP. It is enabled by setting bit 7 (CM bit) of the target potentiometer's Wiper Counter Register to '1' - for example, setting CM=1 in WCR2 cascades Pot 2 to Pot 3. External wiring must connect VL/RL of the higher-order pot to VH/RH of the lower-order pot, and all but one wiper must be disabled (DW=1) to prevent contention. The X9241AMP datasheet details this in Section "Cascade Mode" (Page 9).
X9241AMP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- XDCP™
- Package/Case:
- 20-DIP (0.300", 7.62mm)
- Packaging:
- Bulk
- 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:
- 0°C ~ 70°C
- Resistance - Wiper (Ohms) (Typ):
- 40
X9241AMP FAQ
1.How can I place an order for X9241AMP through Aetrix?
Please submit a Request for Quotation (RFQ) for X9241AMP 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 X9241AMP reliable?
The price and inventory of X9241AMP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X9241AMP is usually 5 days.
3.What payment methods are accepted for X9241AMP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9241AMP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9241AMP?
X9241AMP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9241AMP 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 X9241AMP?
For technical support, including X9241AMP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9241AMP requirements.
6.How does Aetrix verify that X9241AMP is sourced from the original manufacturer or authorized distributors?
All X9241AMP 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 X9241AMP meets industry standards.
7.What is the process for return or replacement of X9241AMP?
All X9241AMP units undergo pre-shipment inspection (PSI). If there is an issue with X9241AMP, 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 X9241AMP part is unused and in its original packaging.
Return procedure for X9241AMP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
X9241AMP Tags
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MCP4011T-103E/SN
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MCP4531T-103E/MF
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MCP4021T-202E/SN
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MCP4023T-103E/CH
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