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Renesas ISL22316WFU10Z-TK
- Part No.:
- ISL22316WFU10Z-TK
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
ISL22316WFU10Z-TK.pdf
- Description:
- IC DGTL POT 10KOHM 128TAP 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,590
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Product details
Overview
ISL22316WFU10Z-TK from Renesas (formerly Intersil) is a single-channel digitally controlled potentiometer (XDCP™) with I²C interface, 128-tap resolution, 10 kΩ end-to-end resistance, non-volatile wiper position storage, and shutdown mode. It operates from 2.7V to 5.5V and delivers ±0.5 LSB differential nonlinearity in voltage divider mode - used for precision gain/offset trimming in sensor signal conditioning circuits.
For engineers reviewing the ISL22316WFU10Z-TK datasheet, ISL22316WFU10Z-TK pinout, ISL22316WFU10Z-TK application, or ISL22316WFU10Z-TK equivalent, this device supports I²C bus addressing via A0/A1 pins, offers 70 Ω typical wiper resistance at 3.3 V, recalls stored wiper position on power-up, and integrates EEPROM with 1M-cycle endurance and 50-year data retention at ≤+55°C.
Technical Context
The ISL22316WFU10Z-TK implements a monolithic CMOS resistor ladder with CMOS switch matrix, enabling precise digital control of analog resistance. Its volatile Wiper Register (WR) controls real-time wiper position, while the non-volatile Initial Value Register (IVR) retains the last-set value across power cycles.
It supports I²C standard-mode (400 kHz) communication with open-drain SDA/SCL, two address pins (A0/A1) allowing up to four devices per bus, and hardware/software shutdown (SHDN pin + ACR bit) that places RH–RL in open-circuit and shorts RW to RL - all registers remain accessible during shutdown.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Total Resistance | 10 kΩ - defines full-scale analog range for voltage divider or rheostat use; enables precise current limiting or bias setting in low-power analog stages. |
| Tap Count | 128 taps - provides 7.8 mV/LSB resolution with 5 V supply across RH–RL; supports fine-grained calibration in closed-loop systems. |
| Wiper Resistance | 70 Ω typical @ 3.3 V - minimizes loading error when driving high-impedance nodes; critical for maintaining accuracy in op-amp feedback networks. |
| DNL (Voltage Divider) | ±0.5 LSB - guarantees monotonicity and absence of code-dependent glitches; essential for stable closed-loop control without output jumps. |
| Shutdown Current | ≤5 µA @ +85°C - enables ultra-low-power sleep states in battery-operated instrumentation; reduces system standby power by >99% vs active mode. |
| Non-volatile Endurance | 1,000,000 write cycles - supports frequent recalibration in field-deployed equipment without EEPROM wear-out concerns. |
| Temp Coefficient (RTOTAL) | ±50 ppm/°C - ensures <±0.6% resistance drift over –40°C to +125°C; suitable for automotive under-hood and industrial temperature environments. |
Pinout & Package
ISL22316WFU10Z-TK is housed in a Pb-free, RoHS-compliant 10-lead MSOP package (M10.118), 3.0 mm × 3.0 mm × 1.0 mm body, with exposed pad for thermal enhancement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SCL | I²C clock input | Open-drain input requiring external pull-up; synchronizes all register reads/writes; max 400 kHz operation supports fast calibration sequences. |
| SDA | I²C bidirectional data line | Open-drain I/O; transmits identification byte, address, and data; ACK/NACK handling enables robust error detection in noisy environments. |
| A1, A0 | I²C slave address bits | Set LSBs of 7-bit address (01010xx); allow up to four ISL22316 devices on one I²C bus without address conflict or level-shifting. |
| SHDN | Hardware shutdown enable | Active-low input; forces RH–RL open and RW–RL short; complements ACR SHDN bit for fail-safe power management in safety-critical systems. |
| VCC, GND | Power supply and reference | Supports 2.7–5.5 V operation; internal regulation ensures stable DCP performance across wide input range; GND serves as analog and digital reference. |
| RH, RL, RW | Potentiometer terminals | RH/RL = fixed ends; RW = movable wiper; configured as 3-terminal pot or 2-terminal rheostat; RH–RL voltage must stay within 0–VCC for safe operation. |
Key Features
| Feature | Design Value |
|---|---|
| Non-volatile wiper storage | Initial Value Register (IVR) retains last wiper setting across power cycles - eliminates need for host MCU to reprogram at boot, reducing firmware complexity and startup latency. |
| Make-before-break switching | CMOS switches transition wiper position without open-circuit interruption - prevents signal dropout or transient spikes in audio or sensor bias paths. |
| I²C-compatible timing | Fully compliant with I²C standard-mode specs (tLOW ≥1300 ns, tHIGH ≥600 ns, tBUF ≥1300 ns) - interoperates with legacy microcontrollers and FPGAs without custom timing logic. |
| Low-noise wiper operation | Typical 70 Ω wiper resistance and <±0.5 LSB DNL minimize distortion in audio gain control and precision reference adjustment applications. |
| Extended temperature range | Specified from –40°C to +125°C - qualified for under-hood automotive, industrial motor drives, and outdoor telecom infrastructure deployments. |
Applications
| Audio Volume Control | Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Digital volume adjustment in automotive infotainment head units with analog audio outputs. IC Role / Device Role / Timing Role: Three-terminal potentiometer configuring op-amp gain in analog audio path; wiper position updated via I²C on button press or touch event. Use Value: Eliminates mechanical pot wear and solder joint fatigue; 128-step resolution enables smooth, repeatable volume sweeps without audible stepping artifacts. |
Use Scenario: Offset and gain calibration of bridge-based pressure sensors in industrial process controllers. IC Role / Device Role / Timing Role: Rheostat-mode configuration (RW–RL) in op-amp feedback loop to trim zero-point and span errors during factory calibration. Use Value: Non-volatile IVR stores calibrated values permanently; eliminates need for external EEPROM or host MCU memory allocation for sensor coefficients. |
| Programmable Power Supply Trim | Industrial PLC Analog Output Scaling |
|
Use Scenario: Fine-tuning of 5 V reference voltage in programmable DC-DC controller feedback networks. IC Role / Device Role / Timing Role: Voltage divider (RH–RL–RW) setting reference ratio for error amplifier; updated during production test or field firmware update. Use Value: ±50 ppm/°C TCR ensures stable output voltage over ambient temperature swings; 10 kΩ resistance minimizes current draw from reference source. |
Use Scenario: Scaling 0–10 V analog outputs in modular PLC I/O modules to match field device input ranges. IC Role / Device Role / Timing Role: Two-terminal variable resistor (RW–RL) in DAC output buffer gain stage; wiper set dynamically based on module configuration profile. Use Value: Shutdown mode (<5 µA) disables unused channels during partial I/O activation, reducing total module quiescent power by up to 40%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digitally controlled potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5171BRMZ10 | Single 128-tap DCP, 10 kΩ, I²C interface, but uses SPI-compatible 3-wire protocol (not true I²C); no hardware SHDN pin. | Lacks dedicated shutdown pin and make-before-break switching; requires software-controlled power gating for low-power states. | Choose AD5171BRMZ10 only if existing design uses SPI peripherals and board layout cannot accommodate SHDN routing. |
| MCP45HV51-103E/MS | 128-tap, 10 kΩ, I²C, 5.5 V tolerant, but rated only to +85°C; no non-volatile storage - wiper resets to mid-scale on power-up. | Requires host MCU to reload calibration values at every boot; unsuitable for unattended or remote field equipment. | Select MCP45HV51-103E/MS only for cost-sensitive consumer applications where extended temperature and EEPROM persistence are not required. |
Compared with AD5171BRMZ10 and MCP45HV51-103E/MS, the ISL22316WFU10Z-TK uniquely combines hardware shutdown, true I²C compliance, make-before-break switching, and guaranteed 50-year non-volatile retention - making it the only option qualified for automotive and industrial systems requiring zero-maintenance calibration persistence.
Availability
ISL22316WFU10Z-TK is available at Aetrix Electronics and suitable for automotive infotainment, industrial sensor calibration, programmable power supplies, and PLC analog I/O modules requiring stable component supply across long product lifecycles.
Supply support for ISL22316WFU10Z-TK 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) is a global leader in microcontrollers, analog, power management, and SoC solutions, serving automotive, industrial, and IoT markets with high-reliability components.
The ISL22316WFU10Z-TK belongs to Renesas' XDCP™ family of digitally controlled potentiometers, designed specifically for replacing mechanical trimpots in high-precision, maintenance-free analog tuning applications across harsh environments.
FAQ
What is the default wiper position after power-up for the ISL22316WFU10Z-TK?
At power-up, the ISL22316WFU10Z-TK first resets the Wiper Register (WR) to 40h (64 decimal), placing the wiper near mid-scale. Then, within 3 ms, it loads the stored value from the non-volatile Initial Value Register (IVR) into WR - so the final position matches the last saved setting unless IVR is uninitialized.
Does the ISL22316WFU10Z-TK support true I²C bus arbitration and multi-master operation?
No - the ISL22316WFU10Z-TK operates exclusively as an I²C slave device and does not implement bus arbitration logic. It responds only to START conditions and valid 7-bit addresses; simultaneous master access must be managed externally by the system controller.
Can the ISL22316WFU10Z-TK be used in rheostat mode with RH left unconnected?
Yes - the ISL22316WFU10Z-TK supports two-terminal rheostat operation. When used between RW and RL (with RH floating), it provides variable resistance from ~0 Ω to 10 kΩ; maximum wiper current is ±3.0 mA, and power dissipation per DCP must not exceed 5 mW.
What is the maximum capacitive load the ISL22316WFU10Z-TK SDA/SCL lines can drive?
The ISL22316WFU10Z-TK specifies a maximum bus capacitance (Cb) of 400 pF for reliable 400 kHz I²C operation. With 400 pF loading, external pull-up resistors should be ≤2.5 kΩ; for lower capacitance (e.g., 40 pF), pull-ups up to 20 kΩ are acceptable per I²C timing requirements.
Is the non-volatile memory in the ISL22316WFU10Z-TK subject to wear-out during normal operation?
Yes - the IVR EEPROM has a rated endurance of 1,000,000 write cycles. However, typical use involves infrequent calibration updates (e.g., once per product lifetime or during factory test), making wear-out negligible in properly designed systems. Volatile WR writes do not affect EEPROM endurance.
ISL22316WFU10Z-TK 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:
- Active
- Programmable:
- Not Verified
- Taper:
- Linear
- Configuration:
- Potentiometer
- Number of Circuits:
- 1
- Number of Taps:
- 128
- Resistance (Ohms):
- 10k
- Interface:
- I2C
- Memory Type:
- Non-Volatile
- Voltage - Supply:
- 2.7V ~ 5.5V
- Features:
- Selectable Address
- Tolerance:
- ±20%
- Temperature Coefficient (Typ):
- ±50ppm/°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 10-MSOP
- Operating Temperature:
- -40°C ~ 125°C
- Resistance - Wiper (Ohms) (Typ):
- 70
ISL22316WFU10Z-TK FAQ
1.How can I place an order for ISL22316WFU10Z-TK through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL22316WFU10Z-TK 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 ISL22316WFU10Z-TK reliable?
The price and inventory of ISL22316WFU10Z-TK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL22316WFU10Z-TK is usually 5 days.
3.What payment methods are accepted for ISL22316WFU10Z-TK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL22316WFU10Z-TK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL22316WFU10Z-TK?
ISL22316WFU10Z-TK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL22316WFU10Z-TK 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 ISL22316WFU10Z-TK?
For technical support, including ISL22316WFU10Z-TK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL22316WFU10Z-TK requirements.
6.How does Aetrix verify that ISL22316WFU10Z-TK is sourced from the original manufacturer or authorized distributors?
All ISL22316WFU10Z-TK 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 ISL22316WFU10Z-TK meets industry standards.
7.What is the process for return or replacement of ISL22316WFU10Z-TK?
All ISL22316WFU10Z-TK units undergo pre-shipment inspection (PSI). If there is an issue with ISL22316WFU10Z-TK, 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 ISL22316WFU10Z-TK part is unused and in its original packaging.
Return procedure for ISL22316WFU10Z-TK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISL22316WFU10Z-TK Tags
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