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Renesas X9259US24IZ-2.7T1
- Part No.:
- X9259US24IZ-2.7T1
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 24-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
X9259US24IZ-2.7T1.pdf
- Description:
- IC DGTL POT 50KOHM 256TAP 24SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,948
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Product details
Overview
X9259US24IZ-2.7T1 from Renesas (formerly Intersil) is a quad digitally controlled potentiometer (XDCP™) IC implementing four independent 256-tap, 50kΩ end-to-end resistance potentiometers with volatile wiper counter registers and nonvolatile data registers. It operates from 2.7V to 5.5V, features 2-wire serial interface (I²C-compatible), and delivers 0.4% resolution with typical 100Ω wiper resistance at 5V. It is used for precision gain control in voltage amplifiers and DC bias trimming in RF power amplifiers.
For engineers reviewing the X9259US24IZ-2.7T1 datasheet, X9259US24IZ-2.7T1 pinout, X9259US24IZ-2.7T1 application, or X9259US24IZ-2.7T1 equivalent, this page provides verified technical context, validated pin functions, confirmed industrial temperature range (–40°C to +85°C), SOIC-24 package mapping, and two real-world alternative parts with documented functional and application differences.
Technical Context
The X9259US24IZ-2.7T1 integrates four monolithic CMOS DCPs, each with RH/RL/RW terminals and an 8-bit volatile Wiper Counter Register (WCR) controlling wiper position across 256 resistor taps. Each DCP includes four 8-bit nonvolatile Data Registers (DR00–DR03 per channel) supporting persistent storage of up to four wiper positions per potentiometer.
It uses a standard 2-wire bus (SDA/SCL) with device address pins A0–A3 enabling up to 16 devices on one bus. Hardware write protection (WP) disables nonvolatile writes when asserted low, and power-up loads DR#0 values into corresponding WCRs - ensuring repeatable startup behavior in sensor signal conditioning and LED bias control systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Total Resistance (RTOTAL) | 50kΩ ±20% - defines full-scale analog adjustment range for gain/voltage scaling circuits |
| Resolution | 0.4% - enables fine-grained 256-step control over analog parameters like amplifier offset or regulator output |
| Supply Voltage Range | 2.7V to 5.5V - supports single-supply operation across industrial and embedded systems without level-shifting |
| Wiper Resistance (RW) | 100Ω typical at VCC = 5V - minimizes loading error in high-impedance feedback paths |
| Standby Current | <5µA max - enables low-power operation in battery-backed or always-on sensor interfaces |
| Endurance / Retention | 100,000 data changes per bit / 100 years - ensures long-term reliability in field-deployed calibration systems |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments including motor drives and HVAC controllers |
Pinout & Package
Package: 24-lead SOIC (RoHS-compliant, M24.3 drawing), surface-mount, 0.300-inch body width.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A3 | 2-wire slave address inputs | Set LSBs of 8-bit I²C address; enable up to 16 devices on same bus without software arbitration |
| SDA | Serial data I/O (open-drain) | Bi-directional communication line requiring external pull-up; compatible with standard I²C masters |
| SCL | Serial clock input | Master-provided timing reference; supports up to 400kHz clock frequency per I²C Fast Mode |
| WP | Hardware write protect (active-low) | Prevents accidental nonvolatile register writes during firmware updates or brown-out conditions |
| RH0–RH3 | High terminal per DCP | Analog voltage reference point for each potentiometer; tied to supply or signal source depending on configuration |
| RL0–RL3 | Low terminal per DCP | Analog ground or return path; forms resistive divider with RH and RW for precise voltage division |
| RW0–RW3 | Wiper terminal per DCP | Adjustable output node; position determined by 8-bit WCR value; connects to op-amp inputs or feedback networks |
| VCC / VSS | Power supply and ground | Single 2.7–5.5V rail powers logic and analog sections; no separate analog/digital supplies required |
Key Features
| Feature | Design Value |
|---|---|
| Quad independent DCPs | Four fully isolated 50kΩ potentiometers in one SOIC-24 package - reduces board space vs discrete solutions and eliminates inter-channel crosstalk |
| Nonvolatile data registers | Four 8-bit DRs per DCP store calibrated settings across power cycles - essential for factory-trimmed sensor front-ends and self-calibrating instruments |
| Increment/decrement command | Real-time wiper stepping via SCL clock pulses while holding SDA high/low - enables smooth manual or microcontroller-driven tuning without register reads/writes |
| 2-wire interface compliance | Fully compatible with standard I²C protocol (START/STOP/ACK) and Fast Mode (400kHz) - integrates seamlessly with ARM Cortex-M, PIC, and ESP32 host platforms |
| Industrial temperature grade | –40°C to +85°C operation with guaranteed specs - validated for use in automotive cabin modules, industrial PLC I/O, and outdoor telecom equipment |
Applications
| Audio Gain Control | Voltage Regulator Trim |
|---|---|
Use Scenario: Adjusting volume level in professional audio mixers with digital control. IC Role / Device Role / Timing Role: Acts as digitally programmable dual-gang potentiometer replacing mechanical controls; four channels support stereo left/right plus auxiliary signal paths. Use Value: Enables remote volume presets, recallable settings, and noise-free adjustment without contact wear - critical for studio-grade audio fidelity. |
Use Scenario: Setting precise output voltage of adjustable DC-DC converters in industrial power supplies. IC Role / Device Role / Timing Role: Functions as programmable feedback divider resistor network; RW outputs connect to error amplifier input of TL431 or similar references. Use Value: Allows firmware-based output voltage reconfiguration without hardware changes - simplifies multi-voltage product variants and field upgrades. |
| Sensor Offset Calibration | RF Power Amplifier Bias |
Use Scenario: Compensating zero-point drift in strain gauge or thermistor signal chains. IC Role / Device Role / Timing Role: Provides programmable DC offset injection at op-amp summing junction; one DCP per sensor channel in multi-sensor arrays. Use Value: Supports automated factory calibration and periodic field recalibration via MCU - improves long-term accuracy in environmental monitoring systems. |
Use Scenario: Controlling gate bias voltage of GaN or LDMOS RF power transistors in wireless base stations. IC Role / Device Role / Timing Role: Delivers stable, low-noise DC bias point under varying thermal conditions; wiper resistance <100Ω avoids distortion in high-frequency bias networks. Use Value: Enables dynamic PA efficiency optimization and thermal derating - extends component lifetime and maintains EVM compliance across operating temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digitally controlled potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5204BRUZ10 | Quad 10kΩ DCP, SPI interface, 3.3V/5V supply, no hardware WP pin | Lacks write-protect pin and 2-wire compatibility; requires SPI host resources instead of I²C | Choose when SPI is already used in system and lower resistance (10kΩ) is needed for current-sensing bias networks |
| MCP42050-I/SL | Dual 50kΩ DCP, SPI interface, 2.7–5.5V, includes shutdown mode | Only two DCPs per package; different pinout and no global transfer instructions | Prefer when dual-channel control suffices and SPI-based firmware reuse outweighs need for four independent pots |
Compared with AD5204BRUZ10 and MCP42050-I/SL, the X9259US24IZ-2.7T1 uniquely combines quad 50kΩ channels, true I²C compatibility with address pins, hardware write protection, and industrial temperature rating - making it optimal for space-constrained, multi-parameter calibration systems requiring robust nonvolatile storage and bus scalability.
Availability
X9259US24IZ-2.7T1 is available at Aetrix Electronics and suitable for industrial sensor calibration, RF power amplifier biasing, and programmable voltage regulation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for X9259US24IZ-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
Renesas Electronics Corporation is a global semiconductor leader delivering microcontrollers, analog power, and SoC solutions for automotive, industrial, and IoT applications.
The X9259 series was designed as a drop-in upgrade to mechanical potentiometers in digitally calibrated systems - targeting industrial instrumentation, telecom infrastructure, and precision analog signal conditioning where repeatability, endurance, and nonvolatile memory are mandatory.
FAQ
What is the operating voltage range for the X9259US24IZ-2.7T1?
The X9259US24IZ-2.7T1 operates from 2.7V to 5.5V, as confirmed in the Absolute Maximum Ratings table (Page 12) and Ordering Information section (Page 2). This extended low-voltage capability distinguishes it from the standard 5V±10% version and enables direct integration with 3.3V microcontrollers and battery-powered systems without level translation.
Does the X9259US24IZ-2.7T1 support true I²C communication?
Yes, the X9259US24IZ-2.7T1 implements a standard 2-wire interface fully compliant with I²C protocol requirements, including START/STOP conditions, ACK/NACK handshaking, and 400kHz Fast Mode timing (Page 14). Its SDA pin is open-drain and requires an external pull-up resistor, matching I²C electrical specifications.
How many wiper positions does each potentiometer in the X9259US24IZ-2.7T1 support?
Each of the four potentiometers in the X9259US24IZ-2.7T1 supports 256 discrete wiper positions, implemented via an 8-bit Wiper Counter Register (WCR) as specified in Table 1 (Page 5) and confirmed in the Features list (Page 1). This yields 0.4% resolution across the full resistance range.
What is the purpose of the WP pin on the X9259US24IZ-2.7T1?
The WP (Write Protect) pin on the X9259US24IZ-2.7T1 is an active-low hardware control that disables all nonvolatile writes to the Data Registers when pulled low (Page 3, Pin Descriptions). This prevents unintended register corruption during power transitions or firmware updates while allowing volatile wiper adjustments to continue.
Is the X9259US24IZ-2.7T1 rated for industrial temperature operation?
Yes, the X9259US24IZ-2.7T1 is explicitly rated for –40°C to +85°C operation, as stated in the Ordering Information table (Page 2) under "TEMP RANGE" for part number X9259US24IZ-2.7. This industrial grade qualification is maintained across all electrical and timing specifications in the datasheet.
X9259US24IZ-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:
- Obsolete
- Programmable:
- Not Verified
- Taper:
- Linear
- Configuration:
- Potentiometer
- Number of Circuits:
- 4
- Number of Taps:
- 256
- Resistance (Ohms):
- 50k
- Interface:
- I2C
- 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):
- 300 (Max)
X9259US24IZ-2.7T1 FAQ
1.How can I place an order for X9259US24IZ-2.7T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for X9259US24IZ-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 X9259US24IZ-2.7T1 reliable?
The price and inventory of X9259US24IZ-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 X9259US24IZ-2.7T1 is usually 5 days.
3.What payment methods are accepted for X9259US24IZ-2.7T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9259US24IZ-2.7T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9259US24IZ-2.7T1?
X9259US24IZ-2.7T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9259US24IZ-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 X9259US24IZ-2.7T1?
For technical support, including X9259US24IZ-2.7T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9259US24IZ-2.7T1 requirements.
6.How does Aetrix verify that X9259US24IZ-2.7T1 is sourced from the original manufacturer or authorized distributors?
All X9259US24IZ-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 X9259US24IZ-2.7T1 meets industry standards.
7.What is the process for return or replacement of X9259US24IZ-2.7T1?
All X9259US24IZ-2.7T1 units undergo pre-shipment inspection (PSI). If there is an issue with X9259US24IZ-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 X9259US24IZ-2.7T1 part is unused and in its original packaging.
Return procedure for X9259US24IZ-2.7T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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