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Renesas ISL22349WFV14Z
- Part No.:
- ISL22349WFV14Z
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
ISL22349WFV14Z.pdf
- Description:
- IC DGT POT 10KOHM 128TAP 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,907
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Product details
Overview
ISL22349WFV14Z from Renesas (formerly Intersil) is a quad digitally controlled potentiometer (XDCP™) with I²C interface, 128-tap resolution, 10kΩ end-to-end resistance, and non-volatile wiper storage. It operates from 2.7V to 5.5V, supports -40°C to +125°C, and integrates four independent DCPs in a single 14-lead TSSOP package for precision analog trimming in sensor signal conditioning circuits.
For engineers reviewing the ISL22349WFV14Z datasheet, ISL22349WFV14Z pinout, ISL22349WFV14Z application, or ISL22349WFV14Z equivalent, this page delivers verified electrical specs, I²C timing constraints, wiper register behavior, shutdown mode operation, and real-world use cases in industrial calibration and programmable gain control.
Technical Context
The ISL22349WFV14Z implements four independent resistor arrays using CMOS switches in "make-before-break" configuration, each with volatile Wiper Register (WR) and non-volatile Initial Value Register (IVR). Wiper position is set via I²C commands targeting addresses 0x00–0x03, with VOL bit in ACR selecting between WR (volatile) and IVR (non-volatile) access.
It supports up to eight devices on one I²C bus via A0–A2 address pins, uses open-drain SDA/SCL requiring external pull-ups, and enters low-power shutdown (<6.5µA at +125°C) when SHDN pin is pulled low or ACR[6] is cleared - retaining wiper state and preserving I²C accessibility.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resistance option | 10kΩ end-to-end (W option), ±20% tolerance, ±50ppm/°C tempco |
| Resolution | 128 taps (7-bit wiper register), monotonic INL ±1 LSB, DNL ±0.5 LSB |
| Wiper resistance | 70Ω typical at VCC = 3.3V, +25°C - directly impacts voltage divider accuracy |
| I²C interface | Standard/fast-mode (400kHz max), 7-bit slave address with A0–A2, open-drain SDA/SCL |
| Power supply | 2.7V to 5.5V operation; shutdown current ≤6.5µA at +125°C; VCC ramp rate ≥0.2V/ms |
| Non-volatile memory | IVR endurance: 1M cycles; data retention: 50 years @ T < +55°C; write cycle time 12–20ms |
| Operating temperature | -40°C to +125°C ambient - qualified for automotive under-hood and industrial control environments |
Pinout & Package
ISL22349WFV14Z is housed in a Pb-free, RoHS-compliant 14-lead Thin Shrink Small Outline Plastic (TSSOP) package (M14.173), 4.95mm × 6.25mm footprint, 1.05mm max height, with 0.65mm lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RW0–RW3 | Wiper terminals for DCP0–DCP3 | Output nodes of voltage dividers; connect to analog signal paths requiring programmable attenuation or bias adjustment |
| VCC | Positive power supply and RH connection | Supplies internal logic and serves as high-side terminal for all four DCPs; must be decoupled near pin |
| GND | Ground reference and RL connection | Common return path for all DCPs and digital interface; requires low-impedance PCB plane |
| SCL / SDA | I²C clock and bidirectional data lines | Open-drain interfaces requiring external pull-up resistors; support multi-master arbitration and standard I²C protocol |
| A0–A2 | I²C device address inputs | Set LSBs of 7-bit slave address (1010xxxR/W); enable up to eight ISL22349 devices on same bus |
| SHDN | Active-low shutdown control | Puts all DCPs into open-circuit RH–RL state and shorts RWi to GND; retains register contents and allows I²C access |
| NC (pins 8, 11) | No-connect terminals | Not internally bonded; must remain unconnected per datasheet - no routing or grounding allowed |
Key Features
| Feature | Design Value |
|---|---|
| Quad DCP integration | Four independent 10kΩ, 128-tap potentiometers in one TSSOP-14 package - reduces board area vs discrete solutions |
| Non-volatile wiper recall | Power-on loads IVR values into WR registers, enabling repeatable startup settings without host initialization |
| Low-noise wiper switching | "Make-before-break" CMOS switch architecture minimizes glitch during tap transitions in voltage divider mode |
| Shutdown mode | Reduces supply current to ≤6.5µA while preserving wiper position and allowing full I²C register access |
| High reliability | 1M write cycles per register and 50-year data retention at <+55°C - suitable for long-life industrial deployments |
Applications
| Industrial Sensor Calibration | Programmable Gain Amplifier |
|---|---|
|
Use Scenario: Calibrating offset and span of pressure transducers across temperature ranges in factory automation systems. IC Role / Device Role / Timing Role: ISL22349WFV14Z acts as precision trim network for op-amp feedback and reference legs, adjusted dynamically via microcontroller over I²C. Use Value: Enables field-updatable calibration without hardware modification; 10kΩ resistance and ±50ppm/°C tempco ensure stable gain/offset over -40°C to +125°C. |
Use Scenario: Configuring variable gain stages in programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: ISL22349WFV14Z replaces mechanical pots in op-amp inverting/non-inverting gain networks, controlled by PLC firmware. Use Value: Supports 128-step gain selection with monotonicity (DNL ±0.5 LSB), eliminating step-induced transients during reconfiguration. |
| Medical Instrument Bias Control | Automotive Cabin Sensor Interface |
|
Use Scenario: Setting precise DC bias points for ECG front-end amplifiers in portable diagnostic devices. IC Role / Device Role / Timing Role: ISL22349WFV14Z provides stable, low-drift wiper voltage to op-amp summing junctions, minimizing baseline drift. Use Value: 70Ω typical wiper resistance and low thermal EMF design reduce noise injection; non-volatile recall ensures consistent startup baseline. |
Use Scenario: Adjusting threshold levels for humidity and CO₂ sensors in automotive HVAC control units. IC Role / Device Role / Timing Role: ISL22349WFV14Z functions as programmable comparator reference divider, updated via vehicle CAN gateway MCU. Use Value: Qualified for -40°C to +125°C operation and AEC-Q200-compatible packaging enables direct placement near cabin sensors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digitally controlled potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL22346WFV14Z | Same 10kΩ, 128-tap, TSSOP-14 package but dual-channel (2 DCPs) instead of quad; identical I²C interface and non-volatile architecture | Lower channel count suits designs needing only two programmable dividers; reduced pin count simplifies layout where quad density is unnecessary | Select ISL22346WFV14Z when system requires only two DCPs and board space or BOM cost optimization is prioritized over channel scalability |
| MCP45HV51-103E/ST | 10kΩ, 257-tap (8-bit), SPI interface, 5.5V max supply; higher resolution but different serial protocol and no built-in shutdown pin | Lacks dedicated SHDN pin and I²C compatibility; requires SPI host and external logic for power gating; higher tap count improves fine-tuning granularity | Choose MCP45HV51-103E/ST when SPI-native microcontrollers are used and finer 257-step resolution justifies interface redesign and added component count |
Compared with ISL22349WFV14Z, ISL22346WFV14Z offers half the channel count in identical packaging for simpler systems, while MCP45HV51-103E/ST trades I²C compatibility and integrated shutdown for higher resolution and SPI flexibility - neither is pin-compatible, and both require layout or firmware adaptation.
Availability
ISL22349WFV14Z is available at Aetrix Electronics and suitable for industrial sensor calibration, programmable gain amplifier design, and automotive cabin sensor interface applications requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for ISL22349WFV14Z 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 semiconductor leader delivering microcontrollers, analog, power, and connectivity solutions for automotive, industrial, and IoT markets.
The ISL22349WFV14Z belongs to Renesas' XDCP™ (eXternally Digitally Controlled Potentiometer) family, designed specifically for replacing mechanical trimpots in high-reliability, programmable analog signal conditioning applications.
FAQ
What is the end-to-end resistance and tolerance of the ISL22349WFV14Z?
The ISL22349WFV14Z has a nominal end-to-end resistance of 10kΩ (W option) with a tolerance of ±20% across temperature and unit variation. This value is specified in the Analog Specifications table on page 3 of the FN6331 datasheet and applies to all four DCP channels within the ISL22349WFV14Z device.
Does the ISL22349WFV14Z support I²C fast-mode operation?
Yes, the ISL22349WFV14Z supports I²C fast-mode operation up to 400kHz, as confirmed in the Serial Interface Specs section (page 5) of the FN6331 datasheet. It meets standard I²C timing requirements including tLOW ≥1300ns, tHIGH ≥600ns, and tBUF ≥1300ns - all validated for reliable communication with common microcontroller I²C peripherals.
How does shutdown mode affect the wiper position and register access in the ISL22349WFV14Z?
In shutdown mode (activated by pulling SHDN low or clearing ACR[6]), the ISL22349WFV14Z opens all DCP end-to-end paths and shorts RWi terminals to GND, but retains all register contents. The I²C interface remains fully accessible, allowing read/write to WR and IVR registers - enabling dynamic reconfiguration without exiting shutdown.
What is the wiper resistance specification for the ISL22349WFV14Z, and why does it matter?
The ISL22349WFV14Z exhibits 70Ω typical wiper resistance at VCC = 3.3V and +25°C. This parameter directly impacts voltage divider accuracy and loading effects on downstream circuitry; lower wiper resistance minimizes error in precision biasing and gain-setting applications where source impedance matters.
Can the ISL22349WFV14Z be used in automotive under-hood applications?
Yes - the ISL22349WFV14Z is rated for -40°C to +125°C operating temperature and packaged in a Pb-free TSSOP compliant with AEC-Q200 stress test guidelines. Its 50-year non-volatile data retention at <+55°C and robust ESD rating (2.5kV HBM) make it suitable for automotive cabin and under-hood sensor interface modules.
ISL22349WFV14Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- XDCP™
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Taper:
- Linear
- Configuration:
- Potentiometer
- Number of Circuits:
- 4
- 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
ISL22349WFV14Z FAQ
1.How can I place an order for ISL22349WFV14Z through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL22349WFV14Z 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 ISL22349WFV14Z reliable?
The price and inventory of ISL22349WFV14Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL22349WFV14Z is usually 5 days.
3.What payment methods are accepted for ISL22349WFV14Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL22349WFV14Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL22349WFV14Z?
ISL22349WFV14Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL22349WFV14Z 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 ISL22349WFV14Z?
For technical support, including ISL22349WFV14Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL22349WFV14Z requirements.
6.How does Aetrix verify that ISL22349WFV14Z is sourced from the original manufacturer or authorized distributors?
All ISL22349WFV14Z 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 ISL22349WFV14Z meets industry standards.
7.What is the process for return or replacement of ISL22349WFV14Z?
All ISL22349WFV14Z units undergo pre-shipment inspection (PSI). If there is an issue with ISL22349WFV14Z, 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 ISL22349WFV14Z part is unused and in its original packaging.
Return procedure for ISL22349WFV14Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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