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Renesas X9259UV24IZT2
- Part No.:
- X9259UV24IZT2
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 24-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
X9259UV24IZT2.pdf
- Description:
- IC DGT POT 50KOHM 256TAP 24TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,290
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Product details
Overview
X9259UV24IZT2 from Intersil (now Renesas) 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 (I²C-compatible) serial interface, <5µA standby current, and 100-year data retention. It serves as programmable gain/voltage/resistance elements in precision analog signal conditioning circuits.
For engineers reviewing the X9259UV24IZT2 datasheet, X9259UV24IZT2 pinout, X9259UV24IZT2 application, or X9259UV24IZT2 equivalent, key selection criteria include its quad-channel 256-tap resolution, TSSOP-24 package with hardware write-protect (WP), industrial temperature range (–40°C to +85°C), and support for both volatile wiper control and nonvolatile register storage across four independent DCPs.
Technical Context
The X9259UV24IZT2 integrates four monolithic CMOS digitally controlled potentiometers, each with RH/RL/RW terminals, an 8-bit volatile Wiper Counter Register (WCR), and four 8-bit nonvolatile Data Registers (DR00–DR03 per channel). Wiper position is set via 2-wire interface using instructions including Write/Read WCR, Write/Read DR, and XFR between them.
Power-up loads DR#0 into corresponding WCR; WP pin disables nonvolatile writes when low. The device supports global transfers across all four DCPs and incremental/decremental wiper adjustment via SCL clocked SDA level detection - enabling real-time fine-tuning without host CPU intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Number of DCPs | Four independent digitally controlled potentiometers on single die |
| Resolution | 256 taps (0.4% step resolution); enables precise 8-bit analog adjustment |
| Total Resistance | 50kΩ ±20%; defines full-scale resistance range for voltage divider or variable resistor use |
| Wiper Resistance | 220Ω typical at VCC = 5V; impacts loading error in high-impedance feedback paths |
| Supply Voltage | 2.7V to 5.5V; supports single-supply operation across industrial and mixed-signal systems |
| Standby Current | <5µA max; enables ultra-low-power retention in battery-backed or energy-sensitive designs |
| Data Retention | 100 years; ensures long-term calibration storage without refresh or backup power |
| Endurance | 100,000 data changes per bit per register; supports repeated field calibration cycles |
Pinout & Package
Package: 24-lead TSSOP (RoHS-compliant, M24.173 drawing), industrial temperature grade (–40°C to +85°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A3 | 2-wire slave address inputs | Set LSBs of 8-bit I²C address (0101xxxx); enable up to 16 devices on same bus |
| SDA | 2-wire bidirectional data line | Open-drain I/O requiring external pull-up; carries instruction/data during read/write/XFR operations |
| SCL | 2-wire serial clock input | Master-provided clock synchronizing all transfers; supports up to 400kHz operation |
| WP | Hardware write-protect input | Active-low; blocks nonvolatile writes to Data Registers when asserted |
| VCC / VSS | Power supply and ground | Single 2.7–5.5V supply; no separate analog/digital rails required |
| RH0–RH3 | High terminal per DCP | Fixed end of resistor ladder; connects to positive reference or supply rail |
| RL0–RL3 | Low terminal per DCP | Fixed end of resistor ladder; connects to ground or negative reference |
| RW0–RW3 | Wiper terminal per DCP | Programmable tap point; output node for voltage division or variable resistance |
| NC / DNC | No-connect / do-not-connect | Pins 6, 19 (NC) and 1 (DNC) must remain unconnected per design |
Key Features
| Feature | Design Value |
|---|---|
| Quad independent DCPs | Enables simultaneous gain, offset, bias, and filter tuning in one compact IC |
| Nonvolatile data registers | Four 8-bit registers per DCP store calibrated settings across power cycles without EEPROM controller overhead |
| Increment/decrement mode | Real-time wiper adjustment via SCL clocking with SDA HIGH/LOW - eliminates polling or command retransmission |
| Hardware write protection | WP pin prevents accidental overwrites of critical calibration data during system operation |
| Industrial temperature range | Rated –40°C to +85°C ensures stable performance in automotive, industrial, and outdoor electronics |
| Pb-free RoHS compliance | TSSOP-24 package meets global environmental standards and lead-free reflow profiles |
Applications
| Audio Volume Control | Voltage Regulator Feedback Tuning |
|---|---|
|
Use Scenario: Adjusting audio signal amplitude in headphone amplifiers or line-out stages. IC Role / Device Role / Timing Role: Acts as two-terminal variable resistor in attenuator configuration, replacing mechanical pots with digital repeatability. Use Value: Eliminates mechanical wear and drift; enables remote or automated volume setting via microcontroller I²C interface. |
Use Scenario: Setting output voltage of adjustable DC-DC converters or LDOs via feedback divider ratio. IC Role / Device Role / Timing Role: Replaces fixed resistors in R1/R2 feedback network; RW terminal delivers programmable reference voltage to error amplifier. Use Value: Enables factory calibration, dynamic output scaling, and adaptive power management without hardware change. |
| Sensor Signal Conditioning | RF Power Amplifier Bias Control |
|
Use Scenario: Trimming offset and gain errors in bridge-based pressure or temperature sensor front-ends. IC Role / Device Role / Timing Role: Configured as three-terminal potentiometer to adjust zero-point and span in instrumentation amplifier gain stage. Use Value: Achieves sub-0.5% calibration accuracy with nonvolatile storage; supports field recalibration via firmware update. |
Use Scenario: Setting quiescent current and operating point of GaAs or SiGe RF power amplifiers in wireless transceivers. IC Role / Device Role / Timing Role: Provides programmable DC bias voltage to gate/base via high-impedance wiper output. Use Value: Compensates for process/temp variation across production lots; enables closed-loop PA efficiency optimization. |
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 | Dual-channel, 256-tap, 10kΩ; I²C interface; no hardware WP pin; 128-step resolution per channel | Limited to two DCPs; lower total resistance reduces current-handling capability in bias networks | Select when dual-channel count suffices and lower RTOTAL aligns with existing feedback network impedance |
| MCP42010-I/P | Dual-channel, 256-tap, 10kΩ; SPI interface; no nonvolatile DRs; volatile-only wiper control | Lacks persistent storage - requires host MCU to reload settings after every power cycle | Choose for cost-sensitive, non-critical trimming where firmware-managed initialization is acceptable |
Compared with X9259UV24IZT2, AD5242BRUZ10 offers fewer channels and no write protection, while MCP42010-I/P lacks nonvolatile memory and uses SPI instead of I²C - making X9259UV24IZT2 uniquely suited for robust, self-contained, quad-channel analog calibration in industrial systems.
Availability
X9259UV24IZT2 is available at Aetrix Electronics and suitable for industrial sensor calibration, RF bias tuning, audio volume control, and programmable power supply applications requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for X9259UV24IZT2 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 (acquired by Renesas Electronics in 2017) is a semiconductor company specializing in high-performance analog and power management ICs for industrial, aerospace, and communications markets.
The X9259 series was designed as a drop-in upgrade to mechanical potentiometers in precision analog systems, delivering programmable resistance with nonvolatile calibration storage and industrial-grade reliability.
FAQ
What is the operating temperature range for the X9259UV24IZT2?
The X9259UV24IZT2 is rated for industrial operation from –40°C to +85°C. This range is confirmed in the Ordering Information table (Page 2) and Recommended Operating Conditions (Page 12) of the FN8169 datasheet. The "I" suffix in the part number explicitly denotes industrial temperature grade, distinguishing it from commercial-grade variants like X9259UV24Z.
Does the X9259UV24IZT2 support true I²C communication?
Yes, the X9259UV24IZT2 implements a standard 2-wire interface compatible with I²C protocol: it responds to 7-bit addresses (with fixed 0101 prefix), supports START/STOP conditions, ACK/NACK handshaking, and operates up to 400kHz clock frequency. Its SDA is open-drain and requires an external pull-up resistor, matching I²C electrical requirements per Page 4 and Page 14 of FN8169.
How many nonvolatile registers does the X9259UV24IZT2 have per potentiometer?
The X9259UV24IZT2 has four 8-bit nonvolatile Data Registers (DR00, DR01, DR02, DR03) for each of its four DCPs - totaling 16 nonvolatile registers. These store wiper positions or system parameters and retain data for 100 years, as specified in the Features section (Page 1) and Data Retention table (Page 13) of FN8169.
Can the X9259UV24IZT2 be used as a two-terminal variable resistor?
Yes, the X9259UV24IZT2 supports two-terminal variable resistor configuration by connecting either RH or RL to the wiper (RW) terminal, as stated in the first paragraph of the Datasheet Overview (Page 1): "The XDCP can be used as a three-terminal potentiometer or as a two-terminal variable resistor…" This mode is commonly used in current-setting or gain-control applications.
What is the maximum wiper current rating for the X9259UV24IZT2?
The absolute maximum wiper current for the X9259UV24IZT2 is ±3mA, as specified in the Recommended Operating Conditions table (Page 12) of FN8169. Exceeding this limit risks degradation of wiper contact resistance or long-term reliability, especially under continuous DC bias conditions.
X9259UV24IZT2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- XDCP™
- Package/Case:
- 24-TSSOP (0.173", 4.40mm 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:
- 5V
- Features:
- Selectable Address
- Tolerance:
- ±20%
- Temperature Coefficient (Typ):
- ±300ppm/°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 24-TSSOP
- Operating Temperature:
- -40°C ~ 85°C
- Resistance - Wiper (Ohms) (Typ):
- 220 (Max)
X9259UV24IZT2 FAQ
1.How can I place an order for X9259UV24IZT2 through Aetrix?
Please submit a Request for Quotation (RFQ) for X9259UV24IZT2 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 X9259UV24IZT2 reliable?
The price and inventory of X9259UV24IZT2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X9259UV24IZT2 is usually 5 days.
3.What payment methods are accepted for X9259UV24IZT2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9259UV24IZT2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9259UV24IZT2?
X9259UV24IZT2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9259UV24IZT2 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 X9259UV24IZT2?
For technical support, including X9259UV24IZT2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9259UV24IZT2 requirements.
6.How does Aetrix verify that X9259UV24IZT2 is sourced from the original manufacturer or authorized distributors?
All X9259UV24IZT2 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 X9259UV24IZT2 meets industry standards.
7.What is the process for return or replacement of X9259UV24IZT2?
All X9259UV24IZT2 units undergo pre-shipment inspection (PSI). If there is an issue with X9259UV24IZT2, 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 X9259UV24IZT2 part is unused and in its original packaging.
Return procedure for X9259UV24IZT2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
X9259UV24IZT2 Tags
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