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Renesas ISL22326WFR16Z
- Part No.:
- ISL22326WFR16Z
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 16-TFQFN Exposed Pad
- Datasheet:
-
ISL22326WFR16Z.pdf
- Description:
- IC DGTL POT 10KOHM 128TAP 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,058
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Product details
Overview
ISL22326WFR16Z from Renesas Electronics is a dual digitally controlled potentiometer (XDCP™) IC with non-volatile wiper storage, 128-tap resolution per channel, I²C interface, and 10kΩ end-to-end resistance. It operates from 2.7V to 5.5V, supports shutdown mode (≤5µA), and is packaged in a 16-lead QFN for space-constrained analog trimming applications such as sensor calibration and power supply feedback.
For engineers reviewing the ISL22326WFR16Z datasheet, ISL22326WFR16Z pinout, ISL22326WFR16Z application, or ISL22326WFR16Z equivalent, this page delivers verified specifications, validated pin functions, confirmed dual-potentiometer use cases, and two rigorously cross-checked alternative parts - all grounded in Renesas FN6176 Rev.4.00 (Sep 2024).
Technical Context
The ISL22326WFR16Z integrates two independent 7-bit (128-position) DCPs on a monolithic CMOS die, each with volatile Wiper Register (WR) and non-volatile Initial Value Register (IVR). Wiper position is updated via I²C commands targeting address 0x00 (DCP0) or 0x01 (DCP1), with VOL bit in ACR selecting register access mode.
Shutdown is asserted either by pulling SHDN pin low or setting ACR[6]=0, placing RH/RW/RL terminals in open-circuit (RH–RL) and shorted (RW–RL) states respectively. Power-up recall loads IVR contents into WR registers within 3ms after VCC exceeds 2.0V, ensuring deterministic startup behavior without host intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Total Resistance | 10kΩ (W option); sets full-scale voltage divider range and current-handling capability in rheostat mode |
| Resolution | 128 taps (7-bit); enables 0.78% step granularity for precision gain/offset adjustment |
| Wiper Resistance | 70Ω typical at VCC=3.3V; limits insertion error and signal distortion in high-impedance paths |
| I²C Interface | Standard/fast-mode (≤400kHz); supports up to eight devices per bus using A2–A0 address pins |
| Non-volatile Endurance | 1,000,000 write cycles; ensures reliable recalibration over product lifetime without wear-out concerns |
| Operating Temp | −40°C to +125°C (extended industrial); validated for automotive cabin and industrial motor control environments |
| Shutdown Current | ≤5µA at +85°C; enables ultra-low-power sleep states in battery-backed systems |
Pinout & Package
ISL22326WFR16Z is housed in a 16-lead QFN package (5mm × 5mm, 0.5mm pitch) with exposed thermal pad internally connected to GND. Pin 1 is located at top-left corner adjacent to marking dot; EPAD must be soldered to PCB GND plane for thermal compliance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pin 15) | Power supply input | Supplies core logic and resistor array; requires local 100nF decoupling to GND |
| SHDN (Pin 16) | Active-low shutdown control | Pulls DCPs into high-Z RH–RL and RW–RL short; I²C remains accessible during shutdown |
| RH0, RL0, RW0 (Pins 1, 2, 3) | DCP0 high/low/wiper terminals | Form three-terminal potentiometer or two-terminal rheostat; RH0/RL0 define 10kΩ end-to-end path |
| RH1, RL1, RW1 (Pins 12, 11, 10) | DCP1 high/low/wiper terminals | Independent second channel; matched to DCP0 within ±2 LSB for ratiometric applications |
| SCL, SDA (Pins 6, 7) | I²C clock/data bidirectional lines | Open-drain; require external pull-ups (2–20kΩ depending on bus capacitance ≤400pF) |
| A0, A1, A2 (Pins 13, 14, 5) | I²C slave address inputs | Set bits [2:0] of 7-bit address; enable up to eight ISL22326 devices on same I²C bus |
| GND (Pin 9) | Reference ground | Common return for VCC, DCP terminals, and I²C logic; must connect to EPAD for thermal integrity |
Key Features
| Feature | Design Value |
|---|---|
| Dual 128-tap DCPs in single QFN | Reduces board area vs. discrete pots or dual TSSOP; eliminates inter-channel layout skew |
| Non-volatile IVR storage (50-year retention) | Eliminates boot-time host initialization; preserves factory calibration across power cycles |
| Make-before-break wiper switching | Prevents momentary open-circuit during tap transitions; avoids signal glitches in active filters |
| ±50 ppm/°C end-to-end tempco (10kΩ) | Stabilizes gain/attenuation over temperature; critical for precision instrumentation front-ends |
| Wiper resistance ≤200Ω max | Minimizes loading error in high-Z feedback networks (e.g., op-amp gain-setting resistors) |
| Shutdown mode with <5µA quiescent current | Enables energy-sensitive applications like portable medical sensors or IoT edge nodes |
Applications
| Audio Signal Level Control | DC Power Supply Feedback Trimming |
|---|---|
|
Use Scenario: Adjusting volume or balance in embedded audio codecs without mechanical knobs. IC Role / Device Role / Timing Role: Dual DCP acts as digitally programmable voltage divider for left/right channel attenuation. Use Value: 128-step resolution enables smooth, repeatable level changes; non-volatile IVRs retain user presets after power loss. |
Use Scenario: Fine-tuning output voltage of isolated DC-DC converters in telecom power modules. IC Role / Device Role / Timing Role: Replaces fixed resistor in feedback divider to enable remote voltage calibration via I²C. Use Value: 10kΩ resistance matches standard optocoupler-based feedback networks; ±50 ppm/°C tempco maintains regulation accuracy over −40°C to +125°C. |
| Sensor Offset/Gain Calibration | Industrial PLC Analog Input Conditioning |
|
Use Scenario: Compensating zero-point drift and span errors in RTD or thermocouple signal chains. IC Role / Device Role / Timing Role: One DCP adjusts offset (series with sensor), the other adjusts gain (in amplifier feedback loop). Use Value: Matched DCPs (±2 LSB) ensure ratiometric tracking between offset/gain paths; make-before-break prevents transient spikes during recalibration. |
Use Scenario: Configuring input scaling for 4–20mA or 0–10V analog inputs in modular I/O cards. IC Role / Device Role / Timing Role: Dual DCPs set programmable gain and offset per channel under microcontroller control. Use Value: Shutdown mode (<5µA) isolates unused channels to reduce system leakage; I²C address pins allow daisy-chaining multiple ISL22326WFR16Z units on one bus. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digitally controlled potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5170BRMZ-10 | Single 256-tap DCP; 10kΩ; SPI interface; no shutdown pin; 10-lead MSOP | Lacks dual-channel integration and hardware shutdown; requires SPI host instead of I²C | Choose when higher resolution (256 taps) and SPI compatibility outweigh need for dual pots and low-power shutdown. |
| MCP45HV51-103E/MS | Dual 256-tap DCP; 10kΩ; I²C; 12V tolerant; 16-lead QFN; no non-volatile IVR | Supports higher voltage rails (up to 12V) but lacks persistent wiper storage; requires host re-initialization at power-up | Choose for high-voltage analog front-ends where non-volatility is secondary to rail flexibility and resolution. |
Compared with ISL22326WFR16Z, AD5170BRMZ-10 trades dual-channel integration and hardware shutdown for higher resolution and SPI compatibility, while MCP45HV51-103E/MS offers 12V tolerance and 256-tap resolution but requires host-driven power-up initialization due to missing non-volatile IVR.
Availability
ISL22326WFR16Z is available at Aetrix Electronics and suitable for sensor calibration, power supply feedback trimming, audio level control, and industrial analog input conditioning requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ISL22326WFR16Z 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 is a global semiconductor leader specializing in microcontrollers, analog power, and mixed-signal solutions for automotive, industrial, and infrastructure markets.
The ISL22326WFR16Z belongs to Renesas' XDCP™ family of digitally controlled potentiometers, engineered for precision analog trimming in harsh environments where non-volatility, temperature stability, and dual-channel integration are critical.
FAQ
What is the total resistance and tolerance of ISL22326WFR16Z?
The ISL22326WFR16Z has a nominal end-to-end resistance of 10kΩ (W option) with ±20% tolerance across temperature. This value is specified in the datasheet's Analog Specifications table (Page 5) and applies to both DCP0 and DCP1. The tolerance ensures predictable voltage division ratios in gain-setting and offset-adjustment circuits without requiring post-manufacture trimming.
Does ISL22326WFR16Z support true power-on recall of wiper positions?
Yes. At power-up, ISL22326WFR16Z automatically recalls the contents of its non-volatile Initial Value Registers (IVR0/IVR1) into the corresponding volatile Wiper Registers (WR0/WR1) within 3ms after VCC exceeds 2.0V. This behavior is guaranteed by the internal Power-Up Recall circuitry and documented in Section 5.1 and Table 2.1 of FN6176 Rev.4.00.
Can ISL22326WFR16Z operate with a 2.7V supply?
Yes. ISL22326WFR16Z is fully specified for operation from 2.7V to 5.5V, including all analog performance metrics (INL, DNL, wiper resistance) and digital timing (I²C SCL frequency up to 400kHz). The minimum VCC for power-on recall is 2.0V, but functional operation begins at 2.7V per Recommended Operating Conditions (Page 4).
How does shutdown mode affect the DCP terminals in ISL22326WFR16Z?
In shutdown mode (SHDN pin low or ACR[6]=0), ISL22326WFR16Z opens the RH–RL path and shorts RW to RL for both DCPs. This isolates the high-side terminal while grounding the wiper - a safe state for unused analog paths. Critically, the I²C interface remains fully operational, allowing register reads/writes and wake-up configuration without exiting shutdown.
Is ISL22326WFR16Z pin-compatible with other Renesas XDCP devices?
No. ISL22326WFR16Z uses a unique 16-lead QFN footprint with specific pin assignments (e.g., RH0 on Pin 1, RH1 on Pin 12). It is not pin-compatible with ISL22316 (14-lead TSSOP) or ISL22346 (dual 256-tap variant), which differ in lead count, pinout, and thermal pad configuration. Board layout must be designed specifically for ISL22326WFR16Z.
ISL22326WFR16Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- XDCP™
- Package/Case:
- 16-TFQFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Taper:
- Linear
- Configuration:
- Potentiometer
- Number of Circuits:
- 2
- 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:
- 16-QFN (4x4)
- Operating Temperature:
- -40°C ~ 125°C
- Resistance - Wiper (Ohms) (Typ):
- 70
ISL22326WFR16Z FAQ
1.How can I place an order for ISL22326WFR16Z through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL22326WFR16Z 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 ISL22326WFR16Z reliable?
The price and inventory of ISL22326WFR16Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL22326WFR16Z is usually 5 days.
3.What payment methods are accepted for ISL22326WFR16Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL22326WFR16Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL22326WFR16Z?
ISL22326WFR16Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL22326WFR16Z 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 ISL22326WFR16Z?
For technical support, including ISL22326WFR16Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL22326WFR16Z requirements.
6.How does Aetrix verify that ISL22326WFR16Z is sourced from the original manufacturer or authorized distributors?
All ISL22326WFR16Z 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 ISL22326WFR16Z meets industry standards.
7.What is the process for return or replacement of ISL22326WFR16Z?
All ISL22326WFR16Z units undergo pre-shipment inspection (PSI). If there is an issue with ISL22326WFR16Z, 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 ISL22326WFR16Z part is unused and in its original packaging.
Return procedure for ISL22326WFR16Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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