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Renesas X9250US24IZ-2.7T1
- Part No.:
- X9250US24IZ-2.7T1
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 24-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
X9250US24IZ-2.7T1.pdf
- Description:
- IC DGTL POT 50KOHM 256TAP 24SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,691
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Product details
Overview
X9250US24IZ-2.7T1 from Intersil is a quad digitally controlled potentiometer (XDCP™) with 256-tap resolution per channel, SPI serial interface, and dual ±2.7V to ±5.5V analog supply capability. It integrates four independent 50kΩ resistor arrays, each with nonvolatile wiper position storage, 40Ω typical wiper resistance at 5V, and <5µA total standby current. It is used in precision offset calibration, programmable gain control, and voltage regulator feedback networks.
For engineers reviewing the X9250US24IZ-2.7T1 datasheet, X9250US24IZ-2.7T1 pinout, X9250US24IZ-2.7T1 application, or X9250US24IZ-2.7T1 equivalent, key selection criteria include its 24-pin SOIC package, -40°C to +85°C industrial temperature range, 2.7V–5.5V VCC compatibility, dual-polarity analog supply support (V+/V−), and four independent nonvolatile data registers per potentiometer.
Technical Context
The X9250US24IZ-2.7T1 implements four 255-segment resistor arrays with CMOS switch-controlled wipers, each driven by an 8-bit volatile Wiper Counter Register (WCR) and backed by four 8-bit nonvolatile Data Registers (DR0–DR3). Its SPI interface operates up to 2MHz with full-duplex capability and supports increment/decrement commands for real-time fine-tuning.
It features hardware write protection (WP pin), device addressing via A0/A1 pins (supporting up to four devices on one bus), and HOLD functionality for pausing serial transfers without resetting sequence state. Power-up automatically loads DR0 into each WCR, enabling deterministic startup behavior without host initialization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.7V to 5.5V - enables direct interfacing with 3.3V or 5V microcontrollers without level-shifting. |
| V+ / V− Range | ±2.7V to ±5.5V - supports true bipolar operation for AC-coupled signal conditioning and rail-to-rail analog adjustments. |
| Pot Resistance | 50kΩ per channel - matches standard op-amp feedback network impedances and minimizes loading effects in sensor interfaces. |
| Resolution | 256 taps (0.4% step size) - provides 8-bit granularity for precise gain/offset trimming in closed-loop systems. |
| Wiper Resistance | 40Ω typical at VCC = 5V - ensures low insertion error in voltage divider configurations and stable output impedance. |
| Standby Current | <5µA total - suitable for battery-powered instrumentation requiring ultra-low quiescent power between calibrations. |
| Data Retention | 100 years - guarantees long-term storage of factory-trimmed or user-saved settings without refresh cycles. |
Pinout & Package
Package: 24-lead SOIC (300 mil), RoHS-compliant Pb-free plus anneal finish, M24.3 footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 S0 | Serial Output | Tri-state SPI data output; driven on falling SCK edge during read operations. |
| 2 A0 | Device Address LSB | Configures slave address bit A0; ties to VSS/VCC or driven by MCU GPIO for multi-device bus addressing. |
| 3 VW3/RW3 | Potentiometer 3 Wiper | Output node of fourth resistor array; connects to amplifier input or feedback node in programmable circuits. |
| 4 V+ | Analog Positive Supply | Positive rail for all four XDCP analog sections; must be ≥ VCC and ≥ any VH/RH voltage. |
| 5 VCC | Digital/System Supply | Power for SPI interface logic and control circuitry; independent from analog supplies. |
| 6 VL0/RL0 | Potentiometer 0 Low Terminal | Fixed end of first resistor array; serves as ground reference or negative rail connection in bipolar setups. |
| 7 HOLD | Serial Communication Pause | Halts ongoing SPI transfer when pulled LOW while SCK is LOW; resumes on HIGH transition with SCK still LOW. |
| 8 SCK | Serial Clock Input | Master-generated clock; rising edge latches SI data, falling edge clocks SO data. |
| 9 VL2/RL2 | Potentiometer 2 Low Terminal | Fixed end of third resistor array; enables independent biasing of multiple analog channels. |
| 10 VH2/RH2 | Potentiometer 2 High Terminal | Fixed end of third resistor array; connects to V+ or external positive reference for rail-referenced adjustment. |
| 11 VW2/RW2 | Potentiometer 2 Wiper | Adjustable tap point of third array; used for dynamic gain scaling in multi-channel audio or sensor front-ends. |
| 12 V− | Analog Negative Supply | Negative rail for analog section; must be ≤ VSS and ≤ any VL/RL voltage; enables true bipolar operation. |
| 13 VSS | System Ground | Digital ground reference; isolated from analog ground in mixed-signal designs to reduce noise coupling. |
| 14 VW1/RW1 | Potentiometer 1 Wiper | Adjustable tap of second array; commonly used for offset nulling in differential amplifiers or comparator hysteresis. |
| 15 VH1/RH1 | Potentiometer 1 High Terminal | Fixed end of second resistor array; referenced to V+ for unipolar applications or to mid-supply for AC-coupled use. |
| 16 VL1/RL1 | Potentiometer 1 Low Terminal | Fixed end of second array; tied to V− in bipolar mode or to VSS in single-supply configurations. |
| 17 CS | Chip Select | Active-low enable; must transition HIGH→LOW before any SPI command; places SO in high-Z when deasserted. |
| 18 A1 | Device Address MSB | Configures slave address bit A1; allows up to four X9250 devices on shared SPI bus without software arbitration. |
| 19 SI | Serial Input | SPI data input; accepts instruction bytes, register addresses, and wiper values; compatible with SO for 2-wire mode. |
| 20 WP | Hardware Write Protect | Prevents nonvolatile writes to DR0–DR3 when LOW; ensures configuration integrity during system runtime. |
| 21 VH3/RH3 | Potentiometer 3 High Terminal | Fixed end of fourth array; used for programmable threshold setting in multi-level detection circuits. |
| 22 VL3/RL3 | Potentiometer 3 Low Terminal | Fixed end of fourth array; connects to reference voltage or ground depending on application topology. |
| 23 VH0/RH0 | Potentiometer 0 High Terminal | Fixed end of first array; primary reference point for main signal path adjustments like DAC output scaling. |
| 24 VW0/RW0 | Potentiometer 0 Wiper | Primary adjustable output; often connected to op-amp inverting input for programmable gain or to feedback node of LDOs. |
Key Features
| Feature | Design Value |
|---|---|
| Four independent 256-tap pots | Enables simultaneous calibration of multiple analog paths (e.g., multi-channel sensor conditioning or stereo audio gain control) without discrete components or board space overhead. |
| Nonvolatile wiper storage (DR0–DR3) | Preserves calibrated settings across power cycles-critical for field-deployed equipment where recalibration is impractical or costly. |
| SPI-compatible dual-supply interface | Supports both unipolar (0–5V) and bipolar (±5V) analog domains while maintaining digital compatibility with standard 3.3V/5V controllers. |
| Hardware write protection (WP pin) | Prevents accidental overwriting of stored calibration data during firmware updates or system resets-enhancing field reliability. |
| Increment/decrement real-time tuning | Allows host MCU to adjust wiper position one step per SCK pulse without issuing full write commands-ideal for interactive user controls or closed-loop servo tuning. |
| 100k-cycle endurance per register | Guarantees >10 years of daily recalibration in industrial test equipment or medical devices operating under strict maintenance schedules. |
Applications
| Offset Voltage Calibration | Programmable Gain Amplifier |
|---|---|
|
Use Scenario: Precision instrumentation amplifier requires zero-drift offset correction across temperature and aging. IC Role / Device Role / Timing Role: X9250US24IZ-2.7T1 acts as a digitally trimmed two-terminal variable resistor in the amplifier's offset null network. Use Value: Enables factory or field calibration with 0.4% resolution and nonvolatile retention-eliminating manual trimpots and reducing test time by 60%. |
Use Scenario: Multi-range data acquisition system adjusts gain dynamically per input signal amplitude. IC Role / Device Role / Timing Role: X9250US24IZ-2.7T1 functions as a three-terminal potentiometer in the feedback loop of an op-amp configured as a noninverting amplifier. Use Value: Provides 256-step gain selection (e.g., 1× to 100×) with <5µA standby draw-extending battery life in portable DAQ units. |
| Voltage Regulator Feedback | Comparator Hysteresis Control |
|
Use Scenario: Adjustable DC-DC converter requires programmable output voltage setpoint across multiple product SKUs. IC Role / Device Role / Timing Role: X9250US24IZ-2.7T1 replaces fixed resistors in the feedback divider of an LM317 or similar adjustable regulator. Use Value: Allows firmware-defined output voltages (e.g., 1.8V–5.0V in 10mV steps) without hardware variants-reducing BOM count by 4×. |
Use Scenario: Industrial sensor interface uses hysteresis to reject EMI-induced false triggers in noisy environments. IC Role / Device Role / Timing Role: X9250US24IZ-2.7T1 sets hysteresis width by adjusting resistor ratio in a Schmitt trigger configuration. Use Value: Enables adaptive hysteresis tuning based on real-time noise measurements-improving detection reliability in motor control systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digitally controlled potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5242BRUZ100 | Single 100kΩ pot, I²C interface, 256 taps, 14-lead TSSOP; no dual-polarity analog supply support. | Limited to unipolar analog rails; lacks four-channel integration-requires four ICs for equivalent functionality. | Select when I²C bus is preferred and board space permits discrete channel implementation. |
| MCP42050-I/P | Dual 50kΩ pot, SPI interface, 256 taps, 14-pin PDIP/SOIC; no nonvolatile storage-wiper resets on power cycle. | Requires external EEPROM or MCU memory for persistent settings; unsuitable for calibration-critical applications. | Select for cost-sensitive, single-use trim applications where recalibration at startup is acceptable. |
Compared with AD5242BRUZ100 and MCP42050-I/P, the X9250US24IZ-2.7T1 uniquely delivers quad-channel integration, bipolar analog supply capability, and guaranteed 100-year nonvolatile storage-making it the only option for compact, field-calibratable, high-reliability analog subsystems.
Availability
X9250US24IZ-2.7T1 is available at Aetrix Electronics and suitable for industrial sensor calibration, programmable power supply design, and medical device analog front-end tuning requiring stable component supply and long-term traceability.
Supply support for X9250US24IZ-2.7T1 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 (now part of Renesas Electronics) is a semiconductor manufacturer specializing in high-performance analog and power management ICs for industrial, aerospace, and communications markets.
The X9250 series was designed specifically for replacing mechanical potentiometers in precision analog systems requiring digital control, nonvolatile storage, and robust operation across extended temperature ranges.
FAQ
What is the maximum SPI clock frequency supported by the X9250US24IZ-2.7T1?
The X9250US24IZ-2.7T1 supports an SPI clock frequency up to 2.0 MHz, as specified in the AC timing section of the FN8165 datasheet. This allows fast wiper updates and register reads/writes while maintaining reliable communication with standard microcontrollers. Exceeding this limit may cause data corruption or missed instructions during high-speed sequences.
Does the X9250US24IZ-2.7T1 support true bipolar analog operation?
Yes, the X9250US24IZ-2.7T1 supports true bipolar analog operation with independent V+ and V− supplies ranging from ±2.7V to ±5.5V. This enables use in AC-coupled signal chains, precision instrumentation, and systems requiring rail-to-rail analog adjustment-unlike many digital potentiometers limited to unipolar domains.
How does the hardware write protect (WP) pin function on the X9250US24IZ-2.7T1?
When the WP pin is held LOW, the X9250US24IZ-2.7T1 blocks all nonvolatile writes to its four Data Registers (DR0–DR3), preventing accidental overwrites of calibrated settings. The WP pin has no effect on volatile Wiper Counter Register updates or SPI read operations-ensuring runtime adjustability while protecting stored configuration.
Can the X9250US24IZ-2.7T1 be used in a 2-wire SPI configuration?
Yes, the X9250US24IZ-2.7T1 supports 2-wire SPI mode because its SO and SI pins are tri-state capable. Connecting SO and SI together reduces MCU pin count and simplifies routing-though software must manage direction control and avoid contention during bidirectional transfers.
What is the wiper resistance specification for the X9250US24IZ-2.7T1 at 3.3V operation?
The X9250US24IZ-2.7T1 specifies 40Ω typical wiper resistance at VCC = 5V. While not explicitly tested at 3.3V, the datasheet confirms operation down to 2.7V VCC, and measured wiper resistance remains within 150Ω–250Ω across the full voltage range per the "RW" parameter in the Potentiometer Characteristics table-ensuring predictable insertion loss in low-voltage designs.
X9250US24IZ-2.7T1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- XDCP™
- Package/Case:
- 24-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:
- 256
- Resistance (Ohms):
- 50k
- Interface:
- SPI
- Memory Type:
- Non-Volatile
- Voltage - Supply:
- ±2.7V ~ 5.5V
- Features:
- Selectable Address
- Tolerance:
- ±20%
- Temperature Coefficient (Typ):
- ±300ppm/°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 24-SOIC
- Operating Temperature:
- -40°C ~ 85°C
- Resistance - Wiper (Ohms) (Typ):
- 150
X9250US24IZ-2.7T1 FAQ
1.How can I place an order for X9250US24IZ-2.7T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for X9250US24IZ-2.7T1 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 X9250US24IZ-2.7T1 reliable?
The price and inventory of X9250US24IZ-2.7T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X9250US24IZ-2.7T1 is usually 5 days.
3.What payment methods are accepted for X9250US24IZ-2.7T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9250US24IZ-2.7T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9250US24IZ-2.7T1?
X9250US24IZ-2.7T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9250US24IZ-2.7T1 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 X9250US24IZ-2.7T1?
For technical support, including X9250US24IZ-2.7T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9250US24IZ-2.7T1 requirements.
6.How does Aetrix verify that X9250US24IZ-2.7T1 is sourced from the original manufacturer or authorized distributors?
All X9250US24IZ-2.7T1 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 X9250US24IZ-2.7T1 meets industry standards.
7.What is the process for return or replacement of X9250US24IZ-2.7T1?
All X9250US24IZ-2.7T1 units undergo pre-shipment inspection (PSI). If there is an issue with X9250US24IZ-2.7T1, 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 X9250US24IZ-2.7T1 part is unused and in its original packaging.
Return procedure for X9250US24IZ-2.7T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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