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Renesas ISL22343WFV20Z
- Part No.:
- ISL22343WFV20Z
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
ISL22343WFV20Z.pdf
- Description:
- IC DGT POT 10KOHM 256TAP 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,255
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Product details
Overview
ISL22343WFV20Z from Renesas (formerly Intersil) is a quad digitally controlled potentiometer (XDCP™) with 256-tap resolution, I²C interface, non-volatile wiper storage, and dual-supply operation (VCC = 2.25–5.5V, V− = −2.25 to −5.5V). It integrates four independent 10kΩ DCPs in a 20-lead TSSOP package and supports voltage divider or rheostat configurations for precision analog trimming in harsh environments.
For engineers reviewing the ISL22343WFV20Z datasheet, ISL22343WFV20Z pinout, ISL22343WFV20Z application, or ISL22343WFV20Z equivalent, key selection considerations include bipolar terminal voltage range (V− to VCC), ±3.0mA max wiper current, 70Ω typical wiper resistance, 1.5µs wiper response time, and extended industrial temperature support (−40°C to +125°C).
Technical Context
The ISL22343WFV20Z implements four independent resistor arrays using CMOS switches in "make-before-break" mode, each controlled by an 8-bit volatile Wiper Register (WRi) and backed by a non-volatile Initial Value Register (IVRi). At power-up, IVRi contents are automatically loaded into WRi to restore preset wiper positions.
It features 11 general-purpose non-volatile registers for lookup table storage, dual supply rails enabling true bipolar signal handling across DCP terminals, and I²C-compatible timing with 400kHz max clock frequency, 900ns data valid delay, and 1.5µs wiper update latency after SCL falling edge.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Total Resistance | 10kΩ per DCP - sets full-scale analog range for voltage division or variable resistance applications |
| Resolution | 256 taps (8-bit) - enables 0.39% step resolution for fine-grained gain/offset calibration |
| Wiper Resistance | 70Ω typical @ 1mA - minimizes insertion error in low-impedance feedback paths |
| Supply Range | VCC: 2.25–5.5V; V−: −2.25 to −5.5V - supports rail-to-rail bipolar analog signal conditioning |
| Temp Range | −40°C to +125°C - qualified for under-hood automotive, industrial motor control, and aerospace systems |
| Non-volatile Endurance | 1,000,000 write cycles - ensures long-term reliability in field-updatable calibration systems |
| Standby Current | <4µA max @ +125°C - enables ultra-low-power sleep modes in battery-backed instrumentation |
Pinout & Package
ISL22343WFV20Z is housed in a 20-lead Pb-free TSSOP (M20.173) with exposed pad internally connected to V−. Pin functions are electrically identical to the QFN variant but mapped to TSSOP physical layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RH0–RH3 | High terminal of DCP0–DCP3 | Fixed end of resistor array; referenced to VCC in unipolar mode or VCC/V− in bipolar mode |
| RL0–RL3 | Low terminal of DCP0–DCP3 | Fixed end of resistor array; referenced to GND in unipolar mode or V− in bipolar mode |
| RW0–RW3 | Wiper terminal of DCP0–DCP3 | Movable contact position set by WRi register; output node for voltage division or variable resistance |
| SCL / SDA | I²C clock/data bidirectional lines | Open-drain interface requiring external pull-ups; supports up to 400kHz bus speed |
| A0–A2 | I²C slave address inputs | Set LSBs of 7-bit address; enable up to eight devices on same I²C bus |
| VCC, V−, GND | Power and reference pins | Dual supply enables ±5.5V differential swing across DCP terminals; GND is digital ground reference |
Key Features
| Feature | Design Value |
|---|---|
| Quad 256-tap DCPs in single package | Reduces board space and BOM count vs. discrete potentiometers or multiple ICs; simplifies layout for multi-channel calibration |
| Non-volatile wiper initialization (IVRi) | Eliminates boot-time calibration routines; guarantees repeatable startup behavior across power cycles |
| Bipolar supply capability (V−/VCC) | Enables true AC-coupled signal adjustment and negative rail referencing without external level-shifting circuitry |
| 11 GP non-volatile registers | Stores factory-trimmed coefficients, user-defined lookup tables, or system-specific configuration data across power loss |
| Make-before-break wiper switching | Prevents open-circuit transients during tap changes - critical for stability in closed-loop amplifier feedback networks |
Applications
| Programmable Gain Amplifier Calibration | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Adjusting feedback network resistance in op-amp-based PGA stages to achieve precise, software-selectable gain steps. IC Role / Device Role / Timing Role: Quad DCP acts as digitally reconfigurable resistor ladder; each channel independently sets gain for multi-range sensor front-end. Use Value: Enables 256-step gain resolution (e.g., 0.1dB steps over 20dB range) with zero hardware change between calibrations. | Use Scenario: Compensating offset and span drift in RTD, thermocouple, or strain gauge interfaces across wide temperature ranges. IC Role / Device Role / Timing Role: DCPs serve as programmable bridge balance resistors and amplifier bias trim elements in analog front-end ASICs. Use Value: Supports field-upgradable compensation curves stored in GP registers, eliminating need for manual potentiometer re-trimming. |
| Automotive Battery Management System | Medical Instrumentation Calibration |
Use Scenario: Fine-tuning cell voltage monitoring thresholds and charge/discharge current sense offsets in high-voltage EV battery packs. IC Role / Device Role / Timing Role: ISL22343WFV20Z provides isolated, non-volatile trim for precision shunt-based current sensing and voltage reference scaling. Use Value: Maintains calibration integrity over 15+ year vehicle lifetime via 50-year EEPROM retention at ≤+55°C junction temperature. | Use Scenario: Calibrating photodiode transimpedance gain, LED drive current, and analog-to-digital reference scaling in portable diagnostic devices. IC Role / Device Role / Timing Role: Acts as stable, low-noise, low-drift resistance element in safety-critical analog signal chains requiring traceable calibration records. Use Value: 85ppm/°C end-to-end tempco and ±0.5LSB INL ensure sub-0.1% measurement accuracy across clinical operating temperatures. |
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 10kΩ DCP; I²C interface; no dual supply; only 2.7–5.5V unipolar operation | Lacks bipolar terminal voltage support and quad integration; requires four devices for equivalent channel count | Choose when board space allows discrete DCP placement and bipolar operation is unnecessary |
| MCP45HV51-103E/ST | Quad 256-tap 10kΩ DCP; SPI interface; 5.5V max VDD; no negative rail support | No V− pin; limited to unipolar 0–5.5V DCP terminal range; SPI instead of I²C | Prefer when existing system uses SPI infrastructure and bipolar signal handling is not required |
Compared with AD5242BRUZ10 and MCP45HV51-103E/ST, the ISL22343WFV20Z uniquely delivers quad-channel integration, true bipolar DCP terminal operation (V− to VCC), and guaranteed 125°C operation - making it the only option for compact, high-reliability, rail-to-rail analog trimming in automotive and industrial environments.
Availability
ISL22343WFV20Z is available at Aetrix Electronics and suitable for automotive battery management, industrial sensor signal conditioning, and medical instrumentation calibration requiring stable component supply across extended temperature and long product lifecycles.
Supply support for ISL22343WFV20Z 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 is a global semiconductor leader delivering microcontrollers, analog power, and SoC solutions for automotive, industrial, and IoT markets.
The ISL22343 series belongs to Renesas' precision analog portfolio, designed specifically for replacing mechanical potentiometers in high-reliability, software-configurable analog signal path applications where non-volatility, temperature stability, and multi-channel integration are critical.
FAQ
What is the total resistance value specified for ISL22343WFV20Z?
The ISL22343WFV20Z is configured with a nominal total resistance of 10kΩ per DCP channel, as indicated by the "W" suffix in the part number per the ordering information table. This value is guaranteed over the full −40°C to +125°C operating range with ±20% tolerance and ±85ppm/°C end-to-end temperature coefficient.
Does ISL22343WFV20Z support true bipolar operation?
Yes, ISL22343WFV20Z supports true bipolar operation via separate VCC (2.25–5.5V) and V− (−2.25 to −5.5V) supply pins. This allows DCP terminals (RH/RL) to swing from V− to VCC, enabling direct interfacing with AC-coupled or dual-rail analog signals without external level shifters.
How many non-volatile registers does ISL22343WFV20Z include beyond the wiper initialization registers?
In addition to the four non-volatile Initial Value Registers (IVR0–IVR3), the ISL22343WFV20Z includes eleven general-purpose non-volatile 8-bit registers (addresses 4–E hex), providing 88 bits of user-configurable EEPROM storage for calibration coefficients, device IDs, or lookup tables.
What is the maximum wiper current rating for ISL22343WFV20Z?
The absolute maximum wiper current for ISL22343WFV20Z is ±3.0mA under recommended operating conditions. Exceeding this limit risks permanent degradation of wiper resistance and linearity performance, especially at temperature extremes.
Can ISL22343WFV20Z be used in voltage divider mode with unloaded output?
Yes, ISL22343WFV20Z supports voltage divider mode with unloaded wiper output. In this configuration, RH is connected to VCC, RL to V− (or GND), and RW delivers a ratiometric output with ±0.5LSB typical INL and ±0.4LSB typical DNL for the 10kΩ "W" variant.
ISL22343WFV20Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- XDCP™
- Package/Case:
- 20-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:
- 256
- Resistance (Ohms):
- 10k
- Interface:
- I2C
- Memory Type:
- Non-Volatile
- Voltage - Supply:
- 2.25V ~ 5.5V
- Features:
- Selectable Address
- Tolerance:
- ±20%
- Temperature Coefficient (Typ):
- ±85ppm/°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 20-TSSOP
- Operating Temperature:
- -40°C ~ 125°C
- Resistance - Wiper (Ohms) (Typ):
- 70
ISL22343WFV20Z FAQ
1.How can I place an order for ISL22343WFV20Z through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL22343WFV20Z 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 ISL22343WFV20Z reliable?
The price and inventory of ISL22343WFV20Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL22343WFV20Z is usually 5 days.
3.What payment methods are accepted for ISL22343WFV20Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL22343WFV20Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL22343WFV20Z?
ISL22343WFV20Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL22343WFV20Z 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 ISL22343WFV20Z?
For technical support, including ISL22343WFV20Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL22343WFV20Z requirements.
6.How does Aetrix verify that ISL22343WFV20Z is sourced from the original manufacturer or authorized distributors?
All ISL22343WFV20Z 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 ISL22343WFV20Z meets industry standards.
7.What is the process for return or replacement of ISL22343WFV20Z?
All ISL22343WFV20Z units undergo pre-shipment inspection (PSI). If there is an issue with ISL22343WFV20Z, 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 ISL22343WFV20Z part is unused and in its original packaging.
Return procedure for ISL22343WFV20Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISL22343WFV20Z Tags
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