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Renesas ISL22326WFV14Z-TK
- Part No.:
- ISL22326WFV14Z-TK
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
ISL22326WFV14Z-TK.pdf
- Description:
- IC DGT POT 10KOHM 128TAP 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,597
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Product details
Overview
ISL22326WFV14Z-TK from Renesas Electronics is a dual digitally controlled potentiometer (XDCP™) with 128-tap resolution, non-volatile initial value registers (IVR), and I²C interface - used for precision analog trimming in voltage dividers, gain control, and bias adjustment circuits operating from 2.7V to 5.5V.
For engineers reviewing the ISL22326WFV14Z-TK datasheet, ISL22326WFV14Z-TK pinout, ISL22326WFV14Z-TK application, or ISL22326WFV14Z-TK equivalent, this device supports up to eight devices per I²C bus via A0–A2 address pins, offers 70Ω typical wiper resistance at 3.3V, and delivers 50-year data retention below +55°C - critical for industrial calibration and long-lifecycle embedded systems.
Technical Context
The ISL22326WFV14Z-TK integrates two independent 128-tap DCPs on a monolithic CMOS die, each with volatile Wiper Registers (WR) and non-volatile Initial Value Registers (IVR). At power-up, IVR contents are automatically loaded into WRs, enabling repeatable startup behavior without host intervention.
Its I²C interface operates up to 400 kHz, supports make-before-break switching, and features dedicated SHDN pin and ACR register control for shutdown mode - where RH terminals disconnect and RW shorts to RL while preserving register access. Wiper response time is 1.5 µs after SCL edge.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Total Resistance | 10 kΩ (W option) - sets full-scale range for voltage divider or rheostat use; matched between DCP0/DCP1 within ±2 LSB |
| Resolution | 128 taps (7-bit WR) - enables 0.78% step granularity across full resistance range |
| Wiper Resistance | 70 Ω typical at VCC = 3.3V - minimizes insertion error in low-impedance signal paths |
| Non-volatile Endurance | 1,000,000 write cycles per register - supports field recalibration over product lifetime |
| Shutdown Current | ≤5 µA max at +85°C - enables ultra-low-power sleep states in battery-backed systems |
| Supply Range | 2.7V to 5.5V - compatible with both 3.3V and 5V logic domains without level shifting |
| Temperature Range | −40°C to +125°C (extended industrial) - validated for under-hood automotive and factory-floor environments |
Pinout & Package
ISL22326WFV14Z-TK is packaged in a 14-lead TSSOP (JEDEC MO-153) with exposed pad internally connected to GND. Pin 9 is GND; pins 1 and 14 are VCC and SHDN respectively; dual DCP terminals (RH0/RW0/RL0 and RH1/RW1/RL1) occupy pins 3–5 and 10–12; I²C interface (SCL/SDA) and address pins (A0–A2) occupy remaining positions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pin 1) | Power supply input | Supplies core logic and DCP array; must be decoupled locally due to 100 °C/W θJA thermal resistance |
| SHDN (Pin 2) | Active-low shutdown control | Forces RH open and RW→RL short; retains register state and allows I²C access during shutdown |
| RH0 (Pin 3), RL0 (Pin 4), RW0 (Pin 5) | DCP0 high/low/wiper terminals | Form three-terminal potentiometer or two-terminal rheostat; RH0/RL0 define end-to-end resistance (10 kΩ) |
| A2 (Pin 6), SCL (Pin 7), SDA (Pin 8) | I²C address clock/data | SCL/SDA require external pull-ups; A2–A0 set slave address bits (000–111) for multi-device bus |
| GND (Pin 9) | Reference ground | Common return for analog and digital sections; ties to EPAD in QFN variant (not used in TSSOP) |
| RW1 (Pin 10), RL1 (Pin 11), RH1 (Pin 12) | DCP1 high/low/wiper terminals | Independent of DCP0; supports simultaneous or staggered adjustment in dual-channel systems |
| A0 (Pin 13), A1 (Pin 14) | I²C address inputs | Complete 3-bit address with A2; enables up to eight ISL22326 devices on same I²C bus |
Key Features
| Feature | Design Value |
|---|---|
| Dual 128-tap DCPs in single package | Reduces board space vs discrete potentiometers; enables matched channel tracking in stereo audio or dual-sensor conditioning |
| Non-volatile IVR storage | Eliminates need for host MCU to reprogram wiper positions at boot - critical for unattended operation |
| Make-before-break wiper switching | Prevents momentary open-circuit glitches during tap transitions - preserves signal continuity in active filters |
| 70 Ω typical wiper resistance | Minimizes loading error in high-gain op-amp feedback networks and precision reference dividers |
| 1.5 µs wiper response time | Supports dynamic real-time adjustments (e.g., adaptive gain control) without introducing latency bottlenecks |
Applications
| Audio Signal Conditioning | Industrial Sensor Calibration |
|---|---|
Use Scenario: Adjusting gain and offset in programmable-gain instrumentation amplifiers for multi-range pressure transducers. IC Role / Device Role / Timing Role: Dual DCP acts as digitally settable feedback and reference resistors - one per channel - enabling auto-ranging without mechanical switches. Use Value: Eliminates manual potentiometer tuning during production; supports field recalibration via I²C without hardware modification. | Use Scenario: Trimming thermistor-based temperature sensor bridges in HVAC controllers operating across −40°C to +85°C. IC Role / Device Role / Timing Role: ISL22326WFV14Z-TK provides stable, non-volatile resistance matching to compensate for sensor drift and PCB trace tolerances. Use Value: Achieves <±0.5% total system accuracy over temperature using 50 ppm/°C ratiometric TC and 128-step resolution. |
| Programmable Power Supply Feedback | Medical Instrument Offset Nulling |
Use Scenario: Dynamically adjusting output voltage setpoint in isolated DC-DC converters using optocoupler feedback loops. IC Role / Device Role / Timing Role: ISL22326WFV14Z-TK replaces fixed resistor dividers in secondary-side feedback network - enabling remote voltage programming via I²C. Use Value: Supports multiple output profiles (e.g., 3.3V/5V/12V) from single PSU design; retains last-set voltage after power cycle. | Use Scenario: Nulling input offset in ECG front-end amplifiers where baseline drift must be corrected before ADC sampling. IC Role / Device Role / Timing Role: One DCP adjusts DC bias on op-amp input; second DCP trims reference voltage - both stored in IVR for patient-specific calibration. Use Value: Enables <1 µV offset correction resolution; 50-year data retention ensures calibration stability across device lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digitally controlled potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5242BRUZ10 | Single 256-tap DCP, 10 kΩ, SPI interface, no shutdown pin | Lacks dual-channel integration and hardware shutdown; requires external GPIO for power gating | Choose when SPI is preferred and only one potentiometer is needed per node |
| MCP45HV51-103E/ST | Dual 128-tap DCP, 10 kΩ, I²C, 5.5V tolerant, but no non-volatile IVR | Requires host MCU to reload wiper values at every power-on; no autonomous recall | Choose when cost sensitivity outweighs need for autonomous boot behavior |
Compared with AD5242BRUZ10 and MCP45HV51-103E/ST, the ISL22326WFV14Z-TK uniquely combines dual-channel integration, hardware shutdown, and guaranteed non-volatile recall - reducing firmware complexity and improving system reliability in unattended deployments.
Availability
ISL22326WFV14Z-TK is available at Aetrix Electronics and suitable for industrial sensor calibration, programmable power supplies, medical instrument offset nulling, and audio signal conditioning requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for ISL22326WFV14Z-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 is a global semiconductor leader delivering microcontrollers, analog power, and SoC solutions for automotive, industrial, and IoT applications.
The ISL22326WFV14Z-TK belongs to Renesas' XDCP™ family of digitally controlled potentiometers - designed specifically for replacing mechanical trimmers in high-reliability, maintenance-free analog adjustment applications.
FAQ
What is the default wiper position of ISL22326WFV14Z-TK at power-up?
At initial power-on before IVR recall completes, all wiper registers reset to 40h (64 decimal), placing each wiper near mid-scale. Once VCC exceeds 2.0V, the device recalls the stored IVR values into the WR registers - restoring the last-saved wiper positions. This two-stage boot ensures predictable behavior even if IVR data is uninitialized.
Does ISL22326WFV14Z-TK support simultaneous update of both DCPs?
No - ISL22326WFV14Z-TK does not support atomic dual-DCP updates. Each DCP (DCP0 at address 00h, DCP1 at address 01h) must be written separately via I²C. However, wiper movement occurs within 1.5 µs per write, enabling near-simultaneous adjustment in time-critical applications when sequenced tightly by the host controller.
Can ISL22326WFV14Z-TK operate with 2.5V supply?
No - ISL22326WFV14Z-TK has a minimum recommended VCC of 2.7V per datasheet Section 2.2. Operation below 2.7V may result in unreliable I²C communication, incomplete IVR recall (Vpor min = 2.0V but recall requires ≥2.7V for full functionality), and degraded DNL/INL performance. Systems requiring 2.5V operation should select alternative DCPs rated for that voltage.
How is shutdown mode activated on ISL22326WFV14Z-TK?
Shutdown mode is activated either by pulling the SHDN pin low (active-low) or setting the SHDN bit (ACR[6]) to 0 via I²C. Both methods force RH terminals into open-circuit and short RW to RL - effectively disabling the potentiometer function while retaining register accessibility and I²C responsiveness. The truth table in datasheet Page 14 confirms logical AND behavior between pin and register control.
What is the maximum I²C bus capacitance supported by ISL22326WFV14Z-TK?
ISL22326WFV14Z-TK supports up to 400 pF total bus capacitance (Cb) on SDA/SCL lines, as specified in Section 2.5. For Cb = 400 pF, external pull-up resistors should be ≤2.5 kΩ to meet rise/fall time limits (tR/tF ≤ 250 ns). Exceeding 400 pF risks violating timing specs like tSU:DAT and tHD:DAT, leading to communication failures - especially at 400 kHz operation.
ISL22326WFV14Z-TK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- XDCP™
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- 14-TSSOP
- Operating Temperature:
- -40°C ~ 125°C
- Resistance - Wiper (Ohms) (Typ):
- 70
ISL22326WFV14Z-TK FAQ
1.How can I place an order for ISL22326WFV14Z-TK through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL22326WFV14Z-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 ISL22326WFV14Z-TK reliable?
The price and inventory of ISL22326WFV14Z-TK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL22326WFV14Z-TK is usually 5 days.
3.What payment methods are accepted for ISL22326WFV14Z-TK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL22326WFV14Z-TK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL22326WFV14Z-TK?
ISL22326WFV14Z-TK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL22326WFV14Z-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 ISL22326WFV14Z-TK?
For technical support, including ISL22326WFV14Z-TK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL22326WFV14Z-TK requirements.
6.How does Aetrix verify that ISL22326WFV14Z-TK is sourced from the original manufacturer or authorized distributors?
All ISL22326WFV14Z-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 ISL22326WFV14Z-TK meets industry standards.
7.What is the process for return or replacement of ISL22326WFV14Z-TK?
All ISL22326WFV14Z-TK units undergo pre-shipment inspection (PSI). If there is an issue with ISL22326WFV14Z-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 ISL22326WFV14Z-TK part is unused and in its original packaging.
Return procedure for ISL22326WFV14Z-TK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISL22326WFV14Z-TK Tags
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MCP4011T-103E/SN
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