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Renesas ISL90842WIV1427Z
- Part No.:
- ISL90842WIV1427Z
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
ISL90842WIV1427Z.pdf
- Description:
- IC DGT POT 10KOHM 256TAP 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,709
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Product details
Overview
ISL90842WIV1427Z from Intersil is a quad digitally controlled variable resistor (DCP) IC with I²C interface, 10kΩ total resistance per channel, 256-tap resolution (0.4% step), wiper resistance of 70Ω typical at 3.3V, and operates from 2.7V to 5.5V supply. It serves as precision rheostat in analog signal conditioning, bias adjustment, and calibration circuits for industrial sensor interfaces and power management systems.
For engineers reviewing the ISL90842WIV1427Z datasheet, ISL90842WIV1427Z pinout, ISL90842WIV1427Z application, or ISL90842WIV1427Z equivalent, key selection criteria include its 14-lead TSSOP package, volatile wiper register architecture, ±3.0mA max wiper current, -40°C to +85°C industrial temperature range, and I²C-compatible timing compliance up to 400kHz.
Technical Context
The ISL90842WIV1427Z implements four independent DCPs using resistor ladders and CMOS switches, each controlled by an 8-bit volatile Wiper Register (WR) accessible via I²C. Each WR sets wiper position monotonically between RH and RW terminals, with RL pins left floating per design.
It functions exclusively as a slave device on the I²C bus, supporting standard-mode (400kHz) operation with address pins A0/A1 enabling up to four devices on one bus. Power-up resets all WRs to 80h (mid-scale), and standby current is ≤5µA at 5.5V - critical for low-power embedded calibration nodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Total resistance | 10kΩ per DCP - defines full-scale rheostat range for biasing and gain control |
| Resolution | 256 taps (8-bit) - enables 0.4% incremental adjustment granularity |
| Wiper resistance | 70Ω typical @ 3.3V - limits insertion error and thermal drift in precision paths |
| Supply voltage | 2.7V to 5.5V - supports dual-supply systems and battery-backed operation |
| Standby current | <5µA max @ 5.5V - preserves system-level power budget during idle calibration states |
| I²C clock frequency | 400kHz - ensures compatibility with standard microcontroller peripherals without timing redesign |
| Temperature range | -40°C to +85°C - qualified for industrial-grade environmental robustness |
Pinout & Package
ISL90842WIV1427Z uses a 14-lead Pb-free TSSOP (Package Code V14) with 0.65mm pitch, 4.3–4.5mm body width, and 0.80–1.05mm height. Pin 1 is RH3; pin 14 is RW0. All RL terminals are unconnected per datasheet specification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RH3 | High terminal of DCP3 | Fixed end of third digital potentiometer; connects to supply or reference voltage rail |
| RW3 | Wiper terminal of DCP3 | Adjustable output node for DCP3; carries ≤±3.0mA wiper current |
| SCL | I²C clock input | Master-generated clock synchronizing all read/write transfers; 400kHz max |
| SDA | I²C bidirectional data line | Open-drain interface requiring external pull-up; supports ACK/NACK protocol |
| GND | Device ground reference | Common return path for all DCP channels and digital logic; must be low-impedance |
| RW2 | Wiper terminal of DCP2 | Independent adjustable node for second DCP; electrically isolated from other RW pins |
| RH2 | High terminal of DCP2 | Fixed end of second DCP; not internally connected to RH0/RH1/RH3 |
| RW1 | Wiper terminal of DCP1 | Third configurable rheostat node; shares no internal routing with RW0/RW2/RW3 |
| RH1 | High terminal of DCP1 | Reference terminal for first DCP; requires external connection to define voltage range |
| A0 | I²C device address LSB | Configures slave address bit 0; combined with A1 for 4-device bus addressing |
| A1 | I²C device address MSB | Configures slave address bit 1; determines unique I²C address (00h–03h) |
| VCC | Power supply input | Supplies both analog DCP core and digital I²C interface; bypass capacitor required |
| RH0 | High terminal of DCP0 | Fixed end of primary DCP; used for main bias or gain-setting function |
| RW0 | Wiper terminal of DCP0 | Primary adjustable output; default reset position at 128/256 (mid-scale) on power-up |
Key Features
| Feature | Design Value |
|---|---|
| Four independent DCPs | Enables simultaneous multi-channel calibration (e.g., VREF, gain, offset, filter cutoff) without discrete components |
| 256-tap resolution | Provides 0.4% step accuracy for fine-grained trimming in closed-loop sensor feedback paths |
| Volatile wiper registers | Allows dynamic runtime reconfiguration via I²C - ideal for adaptive calibration during system self-test |
| Low wiper resistance | 70Ω typical minimizes voltage drop and nonlinearity errors when sourcing/sinking ≤3mA |
| Industrial temperature rating | -40°C to +85°C operation ensures stable resistance matching and TCR (±45ppm/°C) across harsh environments |
Applications
| Instrumentation Calibration | Power Supply Trim |
|---|---|
Use Scenario: Precision multimeter front-end requiring factory-trimmed offset and gain correction across temperature. IC Role / Device Role / Timing Role: ISL90842WIV1427Z acts as four independent rheostats - two for ADC input offset nulling, one for PGA gain setting, and one for reference buffer bias. Use Value: Eliminates manual potentiometers and laser trimming; enables post-assembly digital calibration via host MCU over I²C with 0.4% repeatability. | Use Scenario: Programmable DC-DC converter where output voltage and current limit thresholds must be adjusted dynamically. IC Role / Device Role / Timing Role: ISL90842WIV1427Z configures feedback divider ratio (VOUT trim) and current-sense amplifier gain (ILIM trim) in real time. Use Value: Supports multiple output profiles from single hardware; wiper resistance <70Ω prevents loading errors in high-impedance feedback networks. |
| Sensor Signal Conditioning | Audio Level Control |
Use Scenario: Industrial pressure transducer module needing linearization and temperature compensation coefficients stored in EEPROM. IC Role / Device Role / Timing Role: ISL90842WIV1427Z provides programmable gain and offset correction in analog signal chain prior to ADC sampling. Use Value: Matches sensor nonlinearity with 256-step resolution; DCP-to-DCP resistance matching (±2%) ensures consistent channel-to-channel calibration. | Use Scenario: Professional audio mixer with motorized faders requiring silent, glitch-free volume adjustment. IC Role / Device Role / Timing Role: ISL90842WIV1427Z replaces mechanical pots as digitally controlled attenuators in line-level signal paths. Use Value: 1µs wiper response time (tDCP) prevents audible clicks; 10kΩ value matches standard audio impedance targets. |
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 | 2.7V–5.5V supply, 10kΩ, 256-tap, I²C interface, but includes EEPROM for nonvolatile wiper storage | Supports power-loss retention of last-set wiper positions; eliminates host-initiated restore sequence | Select AD5242BRUZ10 if persistent settings are required; ISL90842WIV1427Z is preferred for volatile-only, lower-cost, faster write-cycle applications |
| MCP4017T-103I/OT | Single-channel, 10kΩ, 64-tap, I²C, SOT-23-6 package; lacks DCP matching specs and industrial temp rating | Limited to single-point adjustment; unsuitable for multi-channel matched calibration | Choose MCP4017T-103I/OT only for space-constrained, single-rheostat use cases; ISL90842WIV1427Z delivers quad-channel integration and guaranteed matching (±2%) |
Compared with AD5242BRUZ10 and MCP4017T-103I/OT, ISL90842WIV1427Z uniquely balances quad-channel density, tight DCP-to-DCP matching, and industrial temperature stability - making it optimal for multi-parameter calibration where volatile configuration suffices and board space is constrained.
Availability
ISL90842WIV1427Z is available at Aetrix Electronics and suitable for industrial instrumentation calibration, programmable power supply trim, sensor signal conditioning, and professional audio level control requiring stable component supply across extended temperature ranges.
Supply support for ISL90842WIV1427Z 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
Intersil Corporation (now part of Renesas Electronics) designs high-performance analog and mixed-signal ICs for industrial, computing, and communications markets.
The ISL90842 product line delivers digitally programmable resistance solutions targeting precision analog calibration, replacing mechanical potentiometers in automated test equipment, power management, and sensor interface systems.
FAQ
What is the total resistance value specified for ISL90842WIV1427Z?
The ISL90842WIV1427Z is configured for 10kΩ total resistance per DCP channel, as confirmed by the "W" resistance option in its ordering code and verified in the Analog Specifications table (RTOTAL = 10kΩ, W option). This value applies across all four independent digitally controlled potentiometers and is valid over the full -40°C to +85°C operating temperature range.
Does ISL90842WIV1427Z retain wiper settings after power cycling?
No, ISL90842WIV1427Z uses volatile wiper registers only. Upon power-up, all four wiper registers reset to 80h (128 decimal), placing each wiper at approximately mid-scale (50% of total resistance). Host firmware must reinitialize desired tap positions via I²C after every power cycle - no EEPROM or nonvolatile storage is integrated into the ISL90842WIV1427Z.
What is the maximum wiper current rating for ISL90842WIV1427Z?
The absolute maximum wiper current for ISL90842WIV1427Z is ±3.0mA per DCP channel, as specified under "Recommended Operating Conditions." Exceeding this limit risks irreversible degradation of the CMOS switch elements and increased wiper resistance drift. Designers must ensure external circuitry limits current through RW–RH paths accordingly.
Can ISL90842WIV1427Z operate from a 2.5V supply?
No, ISL90842WIV1427Z requires a minimum supply voltage of 2.7V, as defined in the "Recommended Operating Conditions" section. Operation below 2.7V may result in undefined I²C communication, incomplete wiper register updates, or failure to meet specified wiper resistance and DNL/INL performance. Systems powered at 2.5V must use a voltage booster or select a compatible 1.8V–5.5V DCP alternative.
How many unique I²C addresses does ISL90842WIV1427Z support?
ISL90842WIV1427Z supports four unique I²C slave addresses (00h, 01h, 02h, 03h) determined by the logic states applied to pins A0 and A1. These pins are hardwired inputs - not programmable registers - so address selection is fixed at PCB layout. Up to four ISL90842WIV1427Z devices can coexist on the same I²C bus with distinct addresses.
ISL90842WIV1427Z 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:
- Rheostat
- Number of Circuits:
- 4
- Number of Taps:
- 256
- Resistance (Ohms):
- 10k
- Interface:
- I2C
- Memory Type:
- Volatile
- Voltage - Supply:
- 2.7V ~ 5.5V
- Features:
- Selectable Address
- Tolerance:
- ±20%
- Temperature Coefficient (Typ):
- ±45ppm/°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 14-TSSOP
- Operating Temperature:
- -40°C ~ 85°C
- Resistance - Wiper (Ohms) (Typ):
- 70
ISL90842WIV1427Z FAQ
1.How can I place an order for ISL90842WIV1427Z through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL90842WIV1427Z 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 ISL90842WIV1427Z reliable?
The price and inventory of ISL90842WIV1427Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL90842WIV1427Z is usually 5 days.
3.What payment methods are accepted for ISL90842WIV1427Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL90842WIV1427Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL90842WIV1427Z?
ISL90842WIV1427Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL90842WIV1427Z 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 ISL90842WIV1427Z?
For technical support, including ISL90842WIV1427Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL90842WIV1427Z requirements.
6.How does Aetrix verify that ISL90842WIV1427Z is sourced from the original manufacturer or authorized distributors?
All ISL90842WIV1427Z 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 ISL90842WIV1427Z meets industry standards.
7.What is the process for return or replacement of ISL90842WIV1427Z?
All ISL90842WIV1427Z units undergo pre-shipment inspection (PSI). If there is an issue with ISL90842WIV1427Z, 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 ISL90842WIV1427Z part is unused and in its original packaging.
Return procedure for ISL90842WIV1427Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISL90842WIV1427Z Tags
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MCP4018T-103E/LT
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MCP4018T-503E/LT
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MCP4011T-103E/SN
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MCP4017T-103E/LT
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