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Renesas X9420YS16I-2.7T1
- Part No.:
- X9420YS16I-2.7T1
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
X9420YS16I-2.7T1.pdf
- Description:
- IC DGTL POT 2.5KOHM 64TAP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,390
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Product details
Overview
X9420YS16I-2.7T1 from Intersil is a single-channel, SPI-compatible digitally controlled potentiometer (XDCP™) with 2.5 kΩ end-to-end resistance, 64-tap resolution, and industrial temperature range (–40°C to +85°C). It operates from 2.7V to 5.5V VCC and ±2.7V to ±5.5V analog supplies (V+/V−), supporting three-terminal potentiometer or two-terminal variable resistor configurations in precision analog signal conditioning circuits.
For engineers reviewing the X9420YS16I-2.7T1 datasheet, X9420YS16I-2.7T1 pinout, X9420YS16I-2.7T1 application, or X9420YS16I-2.7T1 equivalent, key selection criteria include its nonvolatile data register storage (100-year retention), low standby current (<1 µA), SPI register-oriented interface with wiper position transfer capability, and SOIC-16 package compatibility with legacy analog control designs.
Technical Context
The X9420YS16I-2.7T1 implements a 63-segment resistor array with CMOS switch-controlled wiper positioning driven by a volatile 6-bit Wiper Counter Register (WCR). Its SPI interface supports direct read/write of WCR and four 6-bit nonvolatile Data Registers (DR0–DR3), enabling persistent storage of up to four wiper positions and power-up recall from DR0.
Analog operation requires independent dual-supply rails (V+ and V−) referenced to system ground (VSS), while digital logic runs from VCC. Hardware write protection (WP pin) disables nonvolatile writes to Data Registers without affecting volatile WCR updates, and HOLD pin enables serial communication pause without reset.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| End-to-End Resistance | 2.5 kΩ ±20% - defines full-scale analog voltage division range and load interaction in biasing or gain-setting networks |
| Resolution | 64 taps (6-bit) - enables 1.56% step granularity for fine analog parameter adjustment |
| VCC Supply Range | 2.7 V to 5.5 V - supports direct interfacing with 3.3 V and 5 V microcontrollers without level-shifting |
| Analog Supply Range | V+ = +2.7 V to +5.5 V; V− = –2.7 V to –5.5 V - allows bipolar signal handling across ±2.5 V rails |
| Standby Current | <1 µA - minimizes quiescent power in battery-backed or always-on analog subsystems |
| Data Retention | 100 years - ensures long-term calibration storage without refresh in field-deployed equipment |
| Endurance | 100,000 data changes per bit - guarantees reliability over decades of recalibration cycles |
Pinout & Package
Package: 16-lead SOIC (300 mil), RoHS-compliant Pb-free plus anneal finish (M16.3 drawing).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: VCC | System/digital supply | Power source for SPI interface logic and control circuitry; must ramp first during power-up sequencing |
| 2: CS | Chip select | Active-low enable for SPI communication; HIGH places SO in high-impedance and enters standby mode |
| 3: RL/VL | Potentiometer low terminal | Fixed end of resistor array; connects to analog ground or negative reference in three-terminal configuration |
| 4: SI | Serial input | Accepts SPI opcode, address, and data on rising SCK edge; supports daisy-chaining when tied to SO of prior device |
| 5: WP | Hardware write protect | LOW disables nonvolatile writes to Data Registers (DR0–DR3); WCR updates remain enabled |
| 6: VSS | System ground | Reference node for digital logic and interface pins; separate from analog ground (V−) |
| 7: V+ | Analog positive supply | Positive rail for resistor array; must be powered after VCC and before applying signals to VH/RH or VL/RL |
| 8: NC | No connection | Unbonded pad; must remain floating or grounded per layout guidelines to avoid noise coupling |
| 9: V− | Analog negative supply | Negative rail for resistor array; enables true bipolar operation down to –2.7 V |
| 10: NC | No connection | Unbonded pad; no internal connection; leave unconnected |
| 11: A0 | Device address | LSB of 8-bit slave address; allows up to two X9420 devices on same SPI bus |
| 12: SO | Serial output | Push-pull SPI data output; clocked on falling SCK edge; tri-states when CS is HIGH |
| 13: HOLD | Serial hold | Pauses ongoing SPI transaction when pulled LOW while SCK is LOW; resumes on HIGH transition |
| 14: SCK | Serial clock | Master-generated SPI clock; rising edge latches SI, falling edge clocks SO; max 2 MHz frequency |
| 15: RH/VH | Potentiometer high terminal | Fixed end of resistor array; connects to positive reference or supply in voltage divider applications |
| 16: RW/VW | Wiper output | Variable tap point; delivers analog voltage proportional to WCR value; supports ±3 mA wiper current |
Key Features
| Feature | Design Value |
|---|---|
| SPI register-oriented interface | Enables direct read/write of wiper position (WCR) and four nonvolatile data registers (DR0–DR3) using standardized opcodes-no custom firmware drivers required |
| Nonvolatile wiper position storage | Four 6-bit Data Registers retain wiper settings for 100 years; DR0 auto-loads into WCR at power-up for repeatable startup behavior |
| Low-power standby mode | Consumes <1 µA when CS is HIGH, reducing system-level power budget in sleep-aware analog subsystems |
| Bipolar analog supply support | V+ and V− rails operate independently from VCC, enabling use in ±2.5 V signal chains without external level shifters or charge pumps |
| Hardware write protection | WP pin disables nonvolatile writes to Data Registers while permitting real-time WCR updates-prevents accidental loss of calibrated settings |
Applications
| Offset Voltage Adjustment | Voltage Regulator Feedback |
|---|---|
|
Use Scenario: Precision trimming of op-amp input offset in instrumentation amplifiers or sensor front-ends where manual potentiometers are impractical. IC Role / Device Role / Timing Role: Acts as a digitally programmable two-terminal variable resistor in the feedback path of an op-amp, adjusting DC bias point without mechanical intervention. Use Value: Enables factory calibration and field recalibration via SPI commands; eliminates drift-prone mechanical pots and supports automated test systems. |
Use Scenario: Dynamic adjustment of output voltage in adjustable linear regulators (e.g., LM317) during system boot or thermal compensation phases. IC Role / Device Role / Timing Role: Functions as a three-terminal potentiometer in the regulator's feedback divider network, setting VO = 1.25V × (1 + R2/R1) + IadjR2. Use Value: Allows software-controlled output voltage scaling across operating conditions; retains last-set value through power cycles via nonvolatile DR0. |
| Comparator Hysteresis Control | Buffered Reference Voltage Scaling |
|
Use Scenario: Programmable hysteresis width tuning in window comparators used for overvoltage/undervoltage detection in power management ICs. IC Role / Device Role / Timing Role: Configured as a two-terminal variable resistor between comparator output and inverting input to set feedback resistance. Use Value: Permits adaptive hysteresis adjustment based on system load or temperature-improves noise immunity without hardware changes. |
Use Scenario: Generating stable, digitally adjustable reference voltages for ADCs or DACs in mixed-signal embedded systems with limited PCB space. IC Role / Device Role / Timing Role: Used as a three-terminal potentiometer feeding a unity-gain buffer (e.g., OP-07) to deliver low-impedance, ripple-free VOUT = VW. Use Value: Delivers precise, software-defined reference levels with <±1 MI absolute linearity and 100-year retention-replaces discrete resistor networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digitally controlled potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL22416 | 64-tap, 10 kΩ, SPI interface, but only 2.7 V to 5.5 V single-supply analog operation (no V− rail) | Lacks bipolar analog capability; unsuitable for ±2.5 V signal chains requiring true dual-rail operation | Select when cost-sensitive designs require simpler single-supply analog biasing and do not need negative rail support |
| ISL95311 | 256-tap, 10 kΩ, I²C interface, 1.7 V to 5.5 V VCC, but no nonvolatile memory or hardware WP pin | Requires external EEPROM for setting retention; lacks hardware write lock for DR protection | Prefer for high-resolution, low-voltage I²C systems where firmware-managed persistence suffices and security against accidental writes is less critical |
Compared with ISL22416 and ISL95311, the X9420YS16I-2.7T1 uniquely combines bipolar analog supply support (V+/V−), hardware write protection, and 100-year nonvolatile retention in a proven SPI register architecture-making it optimal for industrial-grade recalibratable analog signal paths.
Availability
X9420YS16I-2.7T1 is available at Aetrix Electronics and suitable for precision analog trimming, programmable voltage regulation, comparator hysteresis tuning, and buffered reference generation requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for X9420YS16I-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, communications, and computing markets.
The X9420 family was designed as a drop-in solid-state replacement for mechanical potentiometers in analog control loops, emphasizing nonvolatile setting retention, low power, and robust SPI interoperability for embedded recalibration.
FAQ
What is the maximum SPI clock frequency supported by the X9420YS16I-2.7T1?
The X9420YS16I-2.7T1 supports a maximum SPI clock frequency of 2.0 MHz, as specified in its AC timing characteristics. This allows fast wiper position updates and register reads/writes while maintaining reliable communication with standard microcontroller SPI peripherals. Exceeding this limit may cause data corruption or failed instruction execution in the X9420YS16I-2.7T1.
Does the X9420YS16I-2.7T1 retain its wiper position after power cycling?
Yes-the X9420YS16I-2.7T1 automatically loads the contents of Data Register 0 (DR0) into the volatile Wiper Counter Register (WCR) upon power-up. Since DR0 is nonvolatile and retains data for 100 years, the X9420YS16I-2.7T1 restores its last-saved wiper position reliably across power cycles without host intervention.
Can the X9420YS16I-2.7T1 operate with a single 3.3 V supply?
No-the X9420YS16I-2.7T1 requires three independent supplies: VCC (2.7 V to 5.5 V) for digital logic, and separate V+ and V− rails (±2.7 V to ±5.5 V) for the analog resistor array. A single 3.3 V supply cannot satisfy the bipolar analog requirement; dedicated ±2.5 V or ±3 V rails must be provided to use the X9420YS16I-2.7T1 correctly.
How many distinct wiper positions can be stored in the X9420YS16I-2.7T1?
The X9420YS16I-2.7T1 includes four 6-bit nonvolatile Data Registers (DR0–DR3), each capable of storing one wiper position value (0–63). This allows up to four distinct, persistent settings to be saved and recalled via SPI commands-enabling multi-mode operation or factory calibration presets in the X9420YS16I-2.7T1.
Is the X9420YS16I-2.7T1 pin-compatible with other X9420 variants?
Yes-the X9420YS16I-2.7T1 uses the same 16-lead SOIC package (M16.3) and identical pinout as all X9420WS16*, X9420YS16*, and X9420WS16I* variants. Mechanical and electrical pin compatibility is maintained across resistance values (2.5 kΩ vs. 10 kΩ), temperature grades (commercial vs. industrial), and supply options (standard vs. -2.7 suffix), ensuring board-level reuse for the X9420YS16I-2.7T1.
X9420YS16I-2.7T1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- XDCP™
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Taper:
- Linear
- Configuration:
- Potentiometer
- Number of Circuits:
- 1
- Number of Taps:
- 64
- Resistance (Ohms):
- 2.5k
- 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:
- 16-SOIC
- Operating Temperature:
- -40°C ~ 85°C
- Resistance - Wiper (Ohms) (Typ):
- 150
X9420YS16I-2.7T1 FAQ
1.How can I place an order for X9420YS16I-2.7T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for X9420YS16I-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 X9420YS16I-2.7T1 reliable?
The price and inventory of X9420YS16I-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 X9420YS16I-2.7T1 is usually 5 days.
3.What payment methods are accepted for X9420YS16I-2.7T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for X9420YS16I-2.7T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for X9420YS16I-2.7T1?
X9420YS16I-2.7T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your X9420YS16I-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 X9420YS16I-2.7T1?
For technical support, including X9420YS16I-2.7T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your X9420YS16I-2.7T1 requirements.
6.How does Aetrix verify that X9420YS16I-2.7T1 is sourced from the original manufacturer or authorized distributors?
All X9420YS16I-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 X9420YS16I-2.7T1 meets industry standards.
7.What is the process for return or replacement of X9420YS16I-2.7T1?
All X9420YS16I-2.7T1 units undergo pre-shipment inspection (PSI). If there is an issue with X9420YS16I-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 X9420YS16I-2.7T1 part is unused and in its original packaging.
Return procedure for X9420YS16I-2.7T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
X9420YS16I-2.7T1 Tags
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