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Renesas ISL22416UFRT10Z
- Part No.:
- ISL22416UFRT10Z
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
ISL22416UFRT10Z.pdf
- Description:
- IC DGTL POT 50KOHM 128TAP 10TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,063
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Product details
Overview
ISL22416UFRT10Z from Renesas Electronics (formerly Intersil) is a single-channel digitally controlled potentiometer (XDCP™) with SPI interface, 128-tap resolution, 50kΩ end-to-end resistance, non-volatile wiper position storage, and shutdown mode. It functions as a programmable voltage divider or rheostat in precision analog control loops, biasing circuits, and calibration systems operating from 2.7V to 5.5V.
For engineers reviewing the ISL22416UFRT10Z datasheet, ISL22416UFRT10Z pinout, ISL22416UFRT10Z application, or ISL22416UFRT10Z equivalent, this page delivers verified specifications, package-confirmed pin functions, real-world use scenarios, and two validated alternative parts for design continuity and sourcing flexibility.
Technical Context
The ISL22416UFRT10Z implements a monolithic CMOS resistor ladder with CMOS switch matrix, enabling precise wiper positioning via 7-bit volatile Wiper Register (WR) and non-volatile Initial Value Register (IVR). Its SPI Mode 0 interface operates up to 5MHz with rising-edge input and falling-edge output timing.
Power-up behavior is deterministic: WR resets to 40h (mid-scale), then loads IVR contents once VCC exceeds VPOR (2.0–2.6V). Shutdown mode disconnects RH and shorts RW to RL while preserving register access via SPI - enabled either by SHDN pin low or ACR bit 6 = 0.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Total Resistance | 50kΩ ±20% - defines full-scale analog range for voltage division or current limiting applications. |
| Wiper Resistance | 70Ω typical at VCC = 3.3V - contributes minimal insertion loss in signal-path rheostat configurations. |
| Supply Range | 2.7V to 5.5V - supports direct interfacing with 3.3V and 5V microcontrollers without level-shifting. |
| Shutdown Current | ≤5µA at +85°C - enables ultra-low-power operation during system sleep or standby states. |
| Non-volatile Endurance | 1,000,000 write cycles - ensures long-term calibration stability across industrial equipment lifecycles. |
| Temperature Range | −40°C to +125°C - qualified for under-hood automotive, industrial motor control, and outdoor infrastructure. |
| SPI Clock Frequency | Up to 5MHz - allows rapid wiper updates (≤1.5µs response time) for dynamic gain/offset compensation. |
Pinout & Package
ISL22416UFRT10Z is housed in a Pb-free, RoHS-compliant 10-lead 3×3 mm TDFN package (PKG DWG L10.3x3B) with exposed thermal pad. Pin numbering follows standard top-view orientation with pin 1 at bottom-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SCK | SPI clock input | Master-provided edge-triggered timing signal; rising edge clocks SDI data, falling edge clocks SDO output. |
| SDO | SPI data output | Open-drain output requiring external pull-up; delivers register read data on falling SCK edge. |
| SDI | SPI data input | Accepts identification byte, instruction byte, and data byte; sampled on rising SCK edge. |
| CS | Chip select (active low) | Enables SPI communication; must go low before first SCK edge and remain low during full 3-byte transaction. |
| SHDN | Hardware shutdown control | Active-low input that forces RH open and RW→RL short; logically ANDed with ACR[6] for dual-control shutdown. |
| GND | Analog/digital ground reference | Common return path for DCP terminals and digital interface; requires low-impedance connection to minimize noise coupling. |
| RL | Low terminal of DCP | Fixed end of resistor ladder; forms one side of voltage divider or one terminal of variable resistor. |
| RW | Wiper terminal | Movable contact point; output node in voltage divider mode; adjustable terminal in rheostat mode. |
| RH | High terminal of DCP | Fixed end of resistor ladder opposite RL; supplies reference potential in divider configuration. |
| VCC | Positive supply rail | Provides power for logic and analog sections; must be ≥2.7V for reliable IVR recall and ≤5.5V for absolute max rating compliance. |
Key Features
| Feature | Design Value |
|---|---|
| 128-tap resolution | Enables 7.8mV step resolution in 1V full-scale 50kΩ divider, supporting fine-grained analog tuning. |
| Non-volatile IVR storage | Retains last calibrated wiper setting for 50 years at ≤+55°C, eliminating boot-time reconfiguration in field-deployed systems. |
| Make-before-break switching | Prevents momentary open-circuit or short-circuit events during tap transitions, critical for glitch-free bias control. |
| Independent shutdown control | Allows hardware (SHDN pin) or software (ACR[6]) initiation of low-power state without disrupting SPI bus activity. |
| ±0.5 LSB DNL (voltage divider mode) | Guarantees monotonicity and predictable linearity across all taps, essential for closed-loop feedback accuracy. |
Applications
| Audio Signal Level Control | Laser Diode Bias Calibration |
|---|---|
|
Use Scenario: Programmable volume control in professional audio mixers where mechanical pot wear and drift degrade channel matching over time. IC Role / Device Role / Timing Role: Replaces analog potentiometer in voltage divider configuration between audio source and amplifier input; updated via SPI during user knob rotation or auto-calibration. Use Value: Eliminates mechanical failure modes and enables remote firmware-based trim, achieving <±0.5 LSB DNL stability across −40°C to +85°C operating range. |
Use Scenario: Factory-set bias current adjustment for telecom laser diodes requiring traceable, repeatable calibration prior to module sealing. IC Role / Device Role / Timing Role: Rheostat-mode current-limiting element in constant-current source; IVR programmed once during production test and retained for life. Use Value: Delivers 50-year data retention at +55°C and ±80 ppm/°C end-to-end tempco, ensuring laser threshold current remains within spec over product lifetime. |
| Industrial Sensor Offset Compensation | Programmable Power Supply Feedback |
|
Use Scenario: Real-time zero-point correction for strain-gauge bridge amplifiers in load-cell instrumentation subjected to thermal cycling. IC Role / Device Role / Timing Role: Voltage divider feeding op-amp summing junction; WR updated dynamically by MCU ADC readings to null sensor offset drift. Use Value: 1.5µs wiper response time enables sub-millisecond correction loops; 70Ω wiper resistance minimizes loading error on high-Z amplifier inputs. |
Use Scenario: Adjustable feedback network in isolated DC-DC converters where output voltage must be configured per customer requirement without hardware change. IC Role / Device Role / Timing Role: Precision resistor in TL431-based feedback divider; IVR set once at manufacturing to define nominal VOUT, with WR available for field trimming. Use Value: 50kΩ total resistance provides optimal noise immunity and current draw balance; ±2% RTOTAL tolerance ensures initial VOUT accuracy within ±0.5%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digitally controlled potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL22316WFRTZ | 100-tap resolution, 10kΩ resistance, no shutdown pin, MSOP/TDFN pin-compatible but different SPI command set. | Lacks hardware shutdown and has lower resolution; suitable only where power gating is unnecessary and 10kΩ matches circuit impedance. | Select when board layout reuse is critical and 100-tap granularity suffices; verify SPI firmware compatibility before substitution. |
| AD5175BRMZ-50 | I²C interface (not SPI), 256-tap resolution, 50kΩ resistance, 3.3V-only supply, integrated EEPROM endurance spec. | Requires I²C host and 3.3V rail; higher resolution improves fine-tuning but adds protocol conversion overhead. | Choose for new designs prioritizing resolution and I²C ecosystem integration; not drop-in replaceable due to interface and voltage mismatch. |
Compared with ISL22416UFRT10Z, ISL22316WFRTZ offers footprint compatibility but sacrifices shutdown control and resolution, while AD5175BRMZ-50 provides superior resolution and EEPROM reliability at the cost of interface redesign and supply voltage inflexibility.
Availability
ISL22416UFRT10Z is available at Aetrix Electronics and suitable for industrial sensor calibration, laser diode biasing, programmable power supplies, and audio signal conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ISL22416UFRT10Z 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 high-performance analog portfolio, emphasizing precision, reliability, and automotive-grade qualification.
The ISL22416UFRT10Z belongs to the XDCP™ (eXternally Digitally Controlled Potentiometer) family, designed specifically for replacing mechanical pots in harsh-environment analog trimming, calibration, and programmable gain/offset applications.
FAQ
What is the maximum SPI clock frequency supported by the ISL22416UFRT10Z?
The ISL22416UFRT10Z supports SPI clock frequencies up to 5MHz, with minimum cycle time of 200ns, high/low pulse widths of 100ns each, and setup/hold times of 50ns. This allows fast wiper updates - critical for real-time compensation in closed-loop systems using the ISL22416UFRT10Z.
Does the ISL22416UFRT10Z retain its wiper setting after power loss?
Yes. The ISL22416UFRT10Z stores the wiper position in a non-volatile Initial Value Register (IVR) with 50-year data retention at ≤+55°C. At power-up, the device automatically recalls the IVR value into the volatile Wiper Register (WR), restoring the ISL22416UFRT10Z to its last calibrated state without host intervention.
Can the ISL22416UFRT10Z operate as both a potentiometer and a rheostat?
Yes. The ISL22416UFRT10Z supports both configurations: as a three-terminal potentiometer (RH–RW–RL) for voltage division, and as a two-terminal rheostat (RW–RL or RW–RH) for variable resistance. Its make-before-break switching ensures glitch-free transitions in either mode, making the ISL22416UFRT10Z versatile across analog control topologies.
What is the wiper resistance specification for the ISL22416UFRT10Z?
The ISL22416UFRT10Z specifies a typical wiper resistance of 70Ω at VCC = 3.3V, with a maximum of 200Ω. This low on-resistance minimizes signal attenuation and loading effects - especially important when the ISL22416UFRT10Z is used in high-impedance feedback paths or precision voltage dividers.
How does shutdown mode affect the ISL22416UFRT10Z's DCP terminals?
In shutdown mode, the ISL22416UFRT10Z opens the RH terminal and shorts RW to RL, effectively disabling the potentiometer function while drawing ≤5µA. SPI communication remains fully accessible, allowing register reads/writes - a key feature enabling dynamic reactivation of the ISL22416UFRT10Z without full power-cycle reset.
ISL22416UFRT10Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- XDCP™
- Package/Case:
- 10-WFDFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Taper:
- Linear
- Configuration:
- Potentiometer
- Number of Circuits:
- 1
- Number of Taps:
- 128
- Resistance (Ohms):
- 50k
- Interface:
- SPI
- Memory Type:
- Non-Volatile
- Voltage - Supply:
- 2.7V ~ 5.5V
- Features:
- -
- Tolerance:
- ±20%
- Temperature Coefficient (Typ):
- ±80ppm/°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 10-TDFN-EP (3x3)
- Operating Temperature:
- -40°C ~ 125°C
- Resistance - Wiper (Ohms) (Typ):
- 70
ISL22416UFRT10Z FAQ
1.How can I place an order for ISL22416UFRT10Z through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL22416UFRT10Z 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 ISL22416UFRT10Z reliable?
The price and inventory of ISL22416UFRT10Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL22416UFRT10Z is usually 5 days.
3.What payment methods are accepted for ISL22416UFRT10Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL22416UFRT10Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL22416UFRT10Z?
ISL22416UFRT10Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL22416UFRT10Z 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 ISL22416UFRT10Z?
For technical support, including ISL22416UFRT10Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL22416UFRT10Z requirements.
6.How does Aetrix verify that ISL22416UFRT10Z is sourced from the original manufacturer or authorized distributors?
All ISL22416UFRT10Z 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 ISL22416UFRT10Z meets industry standards.
7.What is the process for return or replacement of ISL22416UFRT10Z?
All ISL22416UFRT10Z units undergo pre-shipment inspection (PSI). If there is an issue with ISL22416UFRT10Z, 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 ISL22416UFRT10Z part is unused and in its original packaging.
Return procedure for ISL22416UFRT10Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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