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Renesas ISL22414WFU10Z-T7A
- Part No.:
- ISL22414WFU10Z-T7A
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
ISL22414WFU10Z-T7A.pdf
- Description:
- IC DGTL POT 10KOHM 256TAP 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,126
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Product details
Overview
ISL22414WFU10Z-T7A from Renesas (formerly Intersil) is a single-channel, 256-tap digitally controlled potentiometer (XDCP™) with SPI interface, 10kΩ end-to-end resistance, dual supply support (VCC = 2.25–5.5V, V− = −2.25 to −5.5V), and extended industrial temperature range (−40°C to +125°C). It functions as a programmable voltage divider or rheostat in precision analog signal conditioning circuits.
For engineers reviewing the ISL22414WFU10Z-T7A datasheet, ISL22414WFU10Z-T7A pinout, ISL22414WFU10Z-T7A application, or ISL22414WFU10Z-T7A equivalent, key selection criteria include wiper position non-volatility, shutdown mode current (<2.5µA), ±1.5 LSB integral non-linearity in voltage divider mode, and 10-lead MSOP package compatibility with bipolar signal paths.
Technical Context
The ISL22414WFU10Z-T7A implements a resistor ladder with CMOS switches and "make-before-break" wiper switching logic, ensuring monotonic tap transitions. Its volatile Wiper Register (WR) controls real-time position, while the non-volatile Initial Value Register (IVR) restores power-up state without external configuration.
It supports SPI Mode 0 (CPOL=0, CPHA=0) with daisy-chain capability, push-pull or open-drain SDO output, and dual-supply operation enabling true bipolar terminal voltage swing (VRH to VRL = V− to VCC). Shutdown mode forces RW-to-RL short and opens RH–RL path.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Total Resistance | 10kΩ - defines full-scale voltage division ratio and load impedance in biasing or gain-setting applications. |
| Wiper Non-linearity (INL) | ±0.5 LSB max - ensures ≤0.2% voltage error across 256 taps in precision reference or sensor calibration circuits. |
| Standby Current | <2.5µA at +125°C - enables low-power operation in battery-backed or always-on monitoring systems. |
| Wiper Response Time | 1.5µs - supports dynamic adjustment in closed-loop control loops with update rates up to ~600kHz. |
| EEPROM Endurance | 1,000,000 write cycles - guarantees reliable lifetime for infrequent power-up configuration storage. |
| Temperature Range | −40°C to +125°C - qualified for under-hood automotive, industrial motor drives, and harsh-environment instrumentation. |
| SPI Clock Frequency | 5MHz - allows fast host communication without requiring high-speed microcontroller peripherals. |
Pinout & Package
ISL22414WFU10Z-T7A is housed in a Pb-free, RoHS-compliant 10-lead MSOP package (M10.118), optimized for space-constrained PCB layouts and thermal performance (θJA = 132°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SCK | SPI clock input | Edge-triggered serial timing reference; rising edge samples SDI, falling edge outputs SDO. |
| 2 SDO | SPI data output | Configurable push-pull or open-drain; delivers register reads and status bits to host controller. |
| 3 SDI | SPI data input | Accepts instruction + data bytes; latched on rising SCK edge during active CS. |
| 4 CS | Chip select (active low) | Enables SPI interface and initiates internal write cycle on rising edge; high-impedance SDO when deasserted. |
| 5 V− | Negative supply rail | Supports bipolar DCP operation; must be −2.25V to −5.5V for specified performance. |
| 6 GND | Analog/digital ground reference | Common return for V−, VCC, and digital I/O; requires low-impedance connection to minimize noise coupling. |
| 7 RL | DCP low terminal | Fixed end of resistor ladder; connected to V− in voltage divider mode or system ground in rheostat mode. |
| 8 RW | DCP wiper terminal | Movable contact point; output node for adjustable voltage or variable resistance; 70Ω typical wiper resistance. |
| 9 RH | DCP high terminal | Fixed end of resistor ladder; connected to VCC in voltage divider mode or signal source in rheostat mode. |
| 10 VCC | Positive supply rail | Power for logic and analog circuitry; 2.25V to 5.5V operation enables compatibility with 3.3V and 5V systems. |
Key Features
| Feature | Design Value |
|---|---|
| 256-tap resolution with monotonicity | Guarantees glitch-free, stepwise wiper movement-critical for stable feedback in PID controllers and audio volume ramps. |
| Dual-supply DCP architecture | Enables true bipolar signal handling (e.g., ±2.5V input ranges) without external level-shifting circuitry. |
| Non-volatile IVR + 14 GP registers | Stores factory-set or user-defined startup positions and lookup tables for multi-curve calibration (e.g., temperature compensation). |
| Shutdown mode with RW-to-RL short | Reduces system standby power and isolates DCP from signal path while preserving wiper state for instant wake-up. |
| 10-lead MSOP package | Provides compact footprint (3mm × 3mm) and thermal efficiency suitable for high-density analog front-ends. |
Applications
| Instrumentation Calibration | Programmable Gain Amplifier |
|---|---|
|
Use Scenario: Adjusting offset and span in 4–20mA transmitter analog output stages. IC Role / Device Role / Timing Role: Precision voltage divider setting reference voltage for DAC output scaling and op-amp feedback networks. Use Value: ±0.5 LSB INL and 10kΩ tolerance (±20%) ensure <0.3% total output error over −40°C to +125°C. |
Use Scenario: Configuring gain in medical ECG front-end amplifiers with selectable bandwidths. IC Role / Device Role / Timing Role: Rheostat-mode variable resistance in op-amp T-network feedback path to set closed-loop gain. Use Value: 1.5µs wiper response enables real-time gain switching synchronized to patient acquisition triggers. |
| Battery Management System | Industrial Motor Drive Control |
|
Use Scenario: Setting cell-balancing thresholds in lithium-ion pack monitors operating from −20°C to +85°C. IC Role / Device Role / Timing Role: Voltage divider defining comparator trip points for overvoltage/undervoltage detection. Use Value: Dual-supply operation (V− = −3V, VCC = 3.3V) allows direct interface to differential sense amplifiers without level shifters. |
Use Scenario: Calibrating current-sense amplifier offsets in servo drive feedback loops exposed to vibration and thermal cycling. IC Role / Device Role / Timing Role: Non-volatile wiper initialization ensures repeatable zero-current baseline after power cycling. Use Value: 50-year EEPROM retention at ≤+55°C guarantees calibration stability across 10+ year product lifecycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digitally controlled potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5243BRMZ10 | 2-channel, I²C interface, 10kΩ, ±30% RTOTAL tolerance, no dual supply support. | Lacks bipolar operation and shutdown mode; requires separate I²C pull-ups and level translation for negative rails. | Choose for space-constrained dual-pot designs where I²C bus sharing is preferred and unipolar operation suffices. |
| MCP42010-I/P | Single-channel, SPI interface, 10kΩ, 2.7–5.5V single supply only, 14-pin PDIP package. | No V− pin; cannot implement true bipolar voltage dividers; larger footprint limits high-density use. | Choose for legacy through-hole designs or cost-sensitive applications where dual-supply capability is unnecessary. |
Compared with AD5243BRMZ10 and MCP42010-I/P, the ISL22414WFU10Z-T7A uniquely supports bipolar signal conditioning, sub-2.5µA shutdown current, and compact MSOP packaging-making it optimal for high-reliability, thermally demanding analog systems requiring precise, non-volatile resistance tuning.
Availability
ISL22414WFU10Z-T7A is available at Aetrix Electronics and suitable for instrumentation calibration, programmable gain amplifiers, battery management systems, and industrial motor drive control requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ISL22414WFU10Z-T7A 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 acquired Intersil in 2017 and maintains its precision analog portfolio, emphasizing high-reliability, automotive-grade, and industrial signal-conditioning ICs.
The ISL22414WFU10Z-T7A belongs to Renesas' XDCP™ (eXternally Digitally Controlled Potentiometer) family, designed specifically for replacing mechanical trimmers in harsh-environment analog systems requiring programmable, non-volatile resistance tuning.
FAQ
What is the resistance tolerance and temperature coefficient of the ISL22414WFU10Z-T7A?
The ISL22414WFU10Z-T7A has a total resistance tolerance of ±20% and an end-to-end temperature coefficient of ±150 ppm/°C (W option). This applies across the full −40°C to +125°C operating range and ensures predictable drift in precision biasing and calibration circuits where absolute resistance value stability is secondary to repeatability.
Does the ISL22414WFU10Z-T7A support daisy-chaining multiple devices on one SPI bus?
Yes, the ISL22414WFU10Z-T7A supports daisy-chain configuration via its SDO and SDI pins. Connecting the SDO of one device to the SDI of the next allows simultaneous programming of multiple ISL22414WFU10Z-T7A units using a single CS line-reducing GPIO count and simplifying firmware for multi-channel calibration systems.
How does the shutdown mode affect the DCP terminals in the ISL22414WFU10Z-T7A?
In shutdown mode, the ISL22414WFU10Z-T7A forces an open circuit between RH and RL while shorting RW to RL. This isolates the wiper from the high-side terminal and grounds the output node-preventing unintended signal injection and minimizing leakage current (<2.5µA) in standby states.
Can the ISL22414WFU10Z-T7A operate with asymmetric dual supplies, such as VCC = +3.3V and V− = −1.8V?
Yes-the ISL22414WFU10Z-T7A accepts VCC from 2.25V to 5.5V and V− from −2.25V to −5.5V independently. Asymmetric supplies like +3.3V/−1.8V are valid per datasheet specifications and enable custom rail-to-rail analog signal ranges without violating absolute maximum ratings.
What is the purpose of the 14 General Purpose non-volatile registers in the ISL22414WFU10Z-T7A?
The 14 General Purpose non-volatile registers in the ISL22414WFU10Z-T7A store user-defined data such as multi-point calibration coefficients, sensor lookup tables, or board-specific configuration values. They retain data for 50 years at ≤+55°C and can be read/written via SPI-enabling field-upgradable calibration without firmware changes.
ISL22414WFU10Z-T7A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- XDCP™
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Taper:
- Linear
- Configuration:
- Potentiometer
- Number of Circuits:
- 1
- Number of Taps:
- 256
- Resistance (Ohms):
- 10k
- Interface:
- SPI
- Memory Type:
- Non-Volatile
- Voltage - Supply:
- ±2.25V ~ 5.5V
- Features:
- -
- Tolerance:
- ±20%
- Temperature Coefficient (Typ):
- 150ppm/°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 10-MSOP
- Operating Temperature:
- -40°C ~ 125°C
- Resistance - Wiper (Ohms) (Typ):
- 70
ISL22414WFU10Z-T7A FAQ
1.How can I place an order for ISL22414WFU10Z-T7A through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL22414WFU10Z-T7A 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 ISL22414WFU10Z-T7A reliable?
The price and inventory of ISL22414WFU10Z-T7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL22414WFU10Z-T7A is usually 5 days.
3.What payment methods are accepted for ISL22414WFU10Z-T7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL22414WFU10Z-T7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL22414WFU10Z-T7A?
ISL22414WFU10Z-T7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL22414WFU10Z-T7A 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 ISL22414WFU10Z-T7A?
For technical support, including ISL22414WFU10Z-T7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL22414WFU10Z-T7A requirements.
6.How does Aetrix verify that ISL22414WFU10Z-T7A is sourced from the original manufacturer or authorized distributors?
All ISL22414WFU10Z-T7A 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 ISL22414WFU10Z-T7A meets industry standards.
7.What is the process for return or replacement of ISL22414WFU10Z-T7A?
All ISL22414WFU10Z-T7A units undergo pre-shipment inspection (PSI). If there is an issue with ISL22414WFU10Z-T7A, 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 ISL22414WFU10Z-T7A part is unused and in its original packaging.
Return procedure for ISL22414WFU10Z-T7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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