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Renesas X9221AWPIZ
- Part No.:
- X9221AWPIZ
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 20-DIP (0.300", 7.62mm)
- Datasheet:
-
X9221AWPIZ.pdf
- Description:
- IC DGTL POT 10KOHM 64TAP 20DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,883
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Product details
Overview
X9221AWPIZ from Intersil is a dual digitally controlled potentiometer (XDCP™) with 64-tap resolution per channel, 2-wire I²C-compatible serial interface, and nonvolatile storage for up to four wiper positions per pot. It operates at 5V ±10%, supports 0°C to +70°C ambient, and is packaged in a 20-lead plastic DIP for analog trimming, gain/offset calibration, and programmable biasing in industrial instrumentation.
For engineers reviewing the X9221AWPIZ datasheet, X9221AWPIZ pinout, X9221AWPIZ application, or X9221AWPIZ equivalent, this page delivers verified electrical specs, validated SOIC/PDIP package mapping, confirmed 2-wire timing compliance (fSCL ≤ 100 kHz), and real-world use cases in precision sensor conditioning and DC-DC feedback networks.
Technical Context
The X9221AWPIZ integrates two independent 63-segment resistor arrays with volatile Wiper Counter Registers (WCR) and four nonvolatile Data Registers (DR0–DR1) per pot. Each array provides end-to-end resistance of 10 kΩ ±20%, wiper resistance ≤130 Ω, and absolute linearity within ±1 MI.
It implements a slave-only 2-wire protocol with fixed device-type identifier 0101b and user-configurable A0–A3 address bits. Nonvolatile writes require ≤10 ms with ACK polling support, and wiper response after STOP is ≤1000 µs. Power-up loads DR0 into each WCR.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| End-to-End Resistance | 10 kΩ ±20% - sets full-scale analog range for voltage divider or current-limiting applications |
| Resolution | 64 taps per pot - enables 1.56% step granularity across full resistance range |
| Interface | 2-wire I²C-compatible - supports standard-mode timing (fSCL ≤ 100 kHz, tLOW ≥ 4.7 µs) |
| Nonvolatile Endurance | 100,000 writes per bit per register - ensures long-term calibration retention in field-deployed systems |
| Supply Voltage | 5 V ±10% - compatible with standard logic rails and avoids need for auxiliary regulators |
| Operating Temperature | 0°C to +70°C - validated for commercial-grade embedded control and test equipment |
| Wiper Current Rating | ±3 mA - supports direct connection to op-amp inputs or low-power ADC reference dividers |
Pinout & Package
Package: 20-lead plastic DIP (PDIP), 1.020" × 0.310", RoHS-compliant matte tin finish, MDP0031 drawing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Positive supply | 5 V ±10% input; powers internal logic and resistor arrays |
| VSS | Ground reference | Return path for all analog and digital circuitry; must be low-impedance |
| SCL | Serial clock input | Master-generated edge-triggered clock; defines data sampling timing |
| SDA | Serial bidirectional data | Open-drain I/O requiring external pull-up; carries address, command, and data |
| A0–A3 | Slave address inputs | Set LSBs of 8-bit I²C address (0101xxxxb); tied high/low for multi-device bus |
| VH0/RH0, VH1/RH1 | Potentiometer high terminals | Analog top-of-divider connections; rated for −3 V to +5 V relative to VSS |
| VL0/RL0, VL1/RL1 | Potentiometer low terminals | Analog bottom-of-divider connections; same voltage rating as VH pins |
| VW0/RW0, VW1/RW1 | Wiper outputs | Variable tap points; wiper resistance ≤130 Ω at ±1 mA load |
| RES (pins 11, 12, 18, 19) | Reserved | No internal connection; must be left unconnected per datasheet |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent XDCP arrays | Enables simultaneous gain and offset adjustment in single-supply signal chains without inter-channel crosstalk |
| Four nonvolatile registers per pot | Stores factory-trimmed, user-saved, and backup wiper positions-critical for recalibration after power loss |
| Direct wiper write & read capability | Allows real-time closed-loop control via Write WCR/Read WCR commands without EEPROM latency |
| Increment/decrement mode | Supports fine-grained manual tuning over I²C bus using SCL pulses-no host MCU firmware changes needed |
| Power-up auto-load from DR0 | Guarantees known startup state; eliminates boot-time initialization code in microcontroller firmware |
Applications
| Instrumentation Calibration | DC-DC Converter Feedback |
|---|---|
Use Scenario: Precision trimming of sensor front-end gain and offset in handheld multimeters and data loggers. IC Role / Device Role / Timing Role: Dual-potentiometer providing independent Rgain and Roffset in op-amp circuits; updated via I²C during factory calibration. Use Value: Eliminates manual trimpots and rework; enables automated calibration with <±0.1% repeatability across temperature. |
Use Scenario: Programmable output voltage setting in isolated flyback converters used in industrial PLC modules. IC Role / Device Role / Timing Role: Replaces fixed resistive divider on TL431 reference input; wiper position sets VOUT dynamically under MCU control. Use Value: Enables field-upgradable output voltages without hardware change; maintains ±0.5% regulation accuracy over line/load. |
| Laser Diode Bias Control | Audio Channel Balance |
Use Scenario: Closed-loop bias current adjustment for telecom laser diodes in SFP+ transceivers. IC Role / Device Role / Timing Role: Two-terminal variable resistor in constant-current source; wiper position modulated by thermal compensation algorithm. Use Value: Compensates for diode aging and temperature drift with 64-step resolution; extends laser lifetime by >20%. |
Use Scenario: Stereo channel volume balancing in professional audio mixers with digital recall capability. IC Role / Device Role / Timing Role: Dual potentiometer configured as two independent voltage dividers; stores left/right balance settings in nonvolatile registers. Use Value: Preserves user preferences across power cycles; supports instant recall of 4 distinct channel-matching profiles. |
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 256-tap channel, I²C interface, 10 kΩ end-to-end, ±30% tolerance | Higher resolution but no dual-channel integration; requires two devices for X9221AWPIZ-equivalent functionality | Select when finer analog step resolution is required and board space allows dual IC placement |
| MCP42010-I/P | Dual 256-tap SPI interface, 10 kΩ, ±20% tolerance, 2.7–5.5 V supply | Requires SPI instead of I²C; lacks global transfer instructions and increment/decrement mode | Prefer when existing design uses SPI peripherals and needs wider supply range compatibility |
Compared with AD5242BRUZ10 and MCP42010-I/P, the X9221AWPIZ uniquely delivers dual 64-tap pots with I²C, nonvolatile register storage, and real-time wiper increment/decrement-all in one PDIP package-making it optimal for space-constrained, calibration-critical commercial instrumentation.
Availability
X9221AWPIZ is available at Aetrix Electronics and suitable for industrial instrumentation calibration, DC-DC converter feedback networks, and laser diode bias control requiring stable component supply and long-term traceability.
Supply support for X9221AWPIZ 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 (now part of Renesas Electronics) designs high-performance analog and mixed-signal ICs for power management, precision analog, and interface applications.
The X9221A product line was engineered specifically for replacing mechanical potentiometers in digitally calibrated systems-emphasizing nonvolatile storage, I²C simplicity, and robust analog performance across commercial temperature ranges.
FAQ
What is the exact end-to-end resistance value and tolerance for X9221AWPIZ?
The X9221AWPIZ has a nominal end-to-end resistance of 10 kΩ with a tolerance of ±20% across the full operating temperature range (0°C to +70°C). This value is confirmed in the Analog Characteristics table on page 9 of FN8163 Rev 2.00 and applies specifically to the "AWS" ordering suffix variant, which includes X9221AWPIZ.
Does X9221AWPIZ support true I²C communication, including START/STOP and ACK protocols?
Yes, the X9221AWPIZ implements a fully compliant 2-wire interface matching I²C standard-mode timing: SCL frequency up to 100 kHz, tLOW ≥ 4.7 µs, tHIGH ≥ 4.0 µs, and proper START/STOP detection with ACK handshake after address and command bytes-as detailed in Figures 7 and 10–13 of the FN8163 datasheet.
How many nonvolatile memory writes can X9221AWPIZ endure, and what is the write time?
The X9221AWPIZ guarantees 100,000 nonvolatile write cycles per bit per register, with a maximum write cycle time (tWR) of 10 ms for Data Register updates. This endurance and timing are specified in the Endurance and Data Retention section (page 10) and AC Characteristics table (page 12) of FN8163 Rev 2.00.
Can X9221AWPIZ operate from a 3.3 V supply?
No, the X9221AWPIZ is specified only for 5 V ±10% operation (4.5 V to 5.5 V). The Recommended Operating Conditions table (page 9) explicitly lists "X9221A 5V ±10%" and does not define parameters for 3.3 V. Attempting 3.3 V operation may result in unreliable communication or incomplete wiper positioning.
What is the function of the RES pins on X9221AWPIZ, and how should they be handled?
The RES pins (11, 12, 18, 19) on X9221AWPIZ are reserved and have no internal connection. Per the Pin Descriptions section (page 2) and Pin Configuration table (page 2), these pins must remain unconnected in PCB layout to prevent noise coupling or unintended parasitic paths that could affect analog performance.
X9221AWPIZ 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:
- 2
- Number of Taps:
- 64
- Resistance (Ohms):
- 10k
- 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
X9221AWPIZ FAQ
1.How can I place an order for X9221AWPIZ through Aetrix?
Please submit a Request for Quotation (RFQ) for X9221AWPIZ 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 X9221AWPIZ reliable?
The price and inventory of X9221AWPIZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for X9221AWPIZ is usually 5 days.
3.What payment methods are accepted for X9221AWPIZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9221AWPIZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9221AWPIZ?
X9221AWPIZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9221AWPIZ 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 X9221AWPIZ?
For technical support, including X9221AWPIZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9221AWPIZ requirements.
6.How does Aetrix verify that X9221AWPIZ is sourced from the original manufacturer or authorized distributors?
All X9221AWPIZ 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 X9221AWPIZ meets industry standards.
7.What is the process for return or replacement of X9221AWPIZ?
All X9221AWPIZ units undergo pre-shipment inspection (PSI). If there is an issue with X9221AWPIZ, 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 X9221AWPIZ part is unused and in its original packaging.
Return procedure for X9221AWPIZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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