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Renesas ISL22346WMVEP
- Part No.:
- ISL22346WMVEP
- Manufacturer:
- Renesas
- Category:
- Digital Potentiometers
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
ISL22346WMVEP.pdf
- Description:
- IC DGT POT 10KOHM 128TAP 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,397
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Product details
Overview
ISL22346WMVEP from Renesas (formerly Intersil) is a quad digitally controlled potentiometer (XDCP™) with non-volatile wiper position storage, 128-tap resolution, 10kΩ total resistance, I²C interface, and operation from -55°C to +125°C for military-grade analog trimming in precision instrumentation and avionics.
For engineers reviewing the ISL22346WMVEP datasheet, ISL22346WMVEP pinout, ISL22346WMVEP application, or ISL22346WMVEP equivalent, key selection factors include its MIL-TEMP enhanced product qualification per VID V62/08605-01XE, shutdown current ≤5µA, wiper resistance of 70Ω typical at 3.3V, and four independent DCPs in a single 20-lead TSSOP package.
Technical Context
The ISL22346WMVEP implements four independent digitally controlled potentiometers using resistor ladders and CMOS switches, each with volatile Wiper Registers (WR) and non-volatile Initial Value Registers (IVR) that restore wiper positions at power-up. Its I²C interface supports up to eight devices on one bus via three address pins (A0–A2).
Each DCP operates as either a three-terminal potentiometer or two-terminal variable resistor. The device includes an active-low SHDN pin enabling ≤5µA shutdown current, and is powered from 2.7V to 5.5V with guaranteed performance across -55°C to +125°C per DSCC VID V62/08605-01XE.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Total Resistance | 10kΩ - sets full-scale analog adjustment range for gain, offset, or bias control circuits |
| Resolution | 128 taps - provides ~0.8% step resolution for fine-grained calibration in sensor signal conditioning |
| Wiper Resistance | 70Ω typical @ 3.3V - minimizes insertion error in low-impedance feedback paths |
| Supply Range | 2.7V to 5.5V - enables direct compatibility with 3.3V and 5V logic/system rails |
| Shutdown Current | ≤5µA - allows power-gating during system sleep without external circuitry |
| Temperature Range | -55°C to +125°C - qualified for aerospace, defense, and downhole industrial environments |
| Data Retention | 10 years @ +125°C - ensures long-term calibration stability without battery backup |
| Endurance | 1,000,000 write cycles per register - supports field recalibration over extended product lifetime |
Pinout & Package
ISL22346WMVEP is housed in a 20-lead Thin Shrink Small Outline Plastic (TSSOP) package per JEDEC MO-153-AC, Issue E, with dimensions 6.40mm × 4.30mm × 1.05mm (max height), gull-wing leads, and moisture sensitivity level (MSL) 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RH0–RH3 | High terminal of DCP0–DCP3 | Fixed end of each potentiometer ladder; connects to reference voltage or supply rail |
| RL0–RL3 | Low terminal of DCP0–DCP3 | Fixed end of each potentiometer ladder; connects to ground or return path |
| RW0–RW3 | Wiper terminal of DCP0–DCP3 | Variable tap point controlled by WR registers; used for adjustable feedback or bias injection |
| SCL / SDA | I²C clock / bidirectional data | Open-drain interface requiring external pull-ups; supports standard/fast-mode I²C timing |
| A0–A2 | I²C device address inputs | Set 3-bit hardware address; enable up to eight ISL22346WMVEP devices on same bus |
| SHDN | Active-low shutdown control | Pulls internal bias off; reduces quiescent current to ≤5µA when logic low |
| VCC / GND | Power supply / reference ground | Must be decoupled locally; supports 2.7V–5.5V operation with full temp-range specs |
Key Features
| Feature | Design Value |
|---|---|
| Quad DCP integration | Four independent 128-tap potentiometers in one 20-pin TSSOP - reduces board area and BOM count vs. discrete solutions |
| Non-volatile IVR storage | Wiper positions retained across power cycles without external EEPROM or battery - simplifies power-up sequence |
| MIL-STD enhanced product | Qualified per DSCC VID V62/08605-01XE with controlled baseline, full traceability, and obsolescence management - meets defense procurement requirements |
| I²C address flexibility | Three hardware address pins (A0–A2) allow eight unique addresses - enables multi-channel calibration in dense systems |
| Low-power shutdown | Active-low SHDN pin reduces current to ≤5µA - extends battery life in portable or remote sensing nodes |
Applications
| Avionics Sensor Calibration | Defense System Bias Trimming |
|---|---|
Use Scenario: Calibrating zero-offset and gain in MEMS inertial measurement units (IMUs) deployed in flight control systems. IC Role / Device Role / Timing Role: Quad DCP provides independent, non-volatile trimming of four analog front-end channels for temperature-compensated sensor outputs. Use Value: Eliminates manual potentiometers and post-manufacture calibration labor; retains calibration through thermal cycling and vibration. | Use Scenario: Adjusting reference thresholds and gain settings in radar receiver analog signal chains operating in harsh environmental conditions. IC Role / Device Role / Timing Role: ISL22346WMVEP serves as radiation-tolerant, high-reliability analog trim element for RF front-end DC bias networks. Use Value: Full -55°C to +125°C operation and 1M-cycle endurance ensure stable performance over mission lifetime without recalibration. |
| Industrial Process Controller | Downhole Oilfield Instrumentation |
Use Scenario: Fine-tuning loop gain and setpoint offsets in 4–20mA transmitter modules used in chemical plant monitoring. IC Role / Device Role / Timing Role: Four DCPs configure input scaling, output drive strength, and fault threshold levels within isolated analog signal paths. Use Value: Non-volatile storage preserves factory calibration after power loss during maintenance or brownouts. | Use Scenario: Compensating for thermal drift in pressure and temperature transducers located in deep-well drilling tools. IC Role / Device Role / Timing Role: ISL22346WMVEP performs high-temperature analog trimming of bridge sensor excitation and amplifier feedback networks. Use Value: 10-year data retention at +125°C ensures calibration integrity during extended downhole deployments without intervention. |
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, 10kΩ, I²C, commercial temp (-40°C to +85°C), no non-volatile storage | Lacks quad integration and MIL-TEMP rating; requires external EEPROM for persistent settings | Select when cost-sensitive, single-channel, non-military applications suffice and board space allows multiple ICs |
| MAX5487ETE+T | Dual 256-tap DCP, 10kΩ, SPI interface, extended temp (-40°C to +105°C), volatile-only wiper registers | Uses SPI instead of I²C; lacks non-volatility and full MIL-TEMP range; smaller 16-pin TQFN package | Choose for SPI-based systems needing higher resolution but not requiring radiation-hardened or defense-qualified components |
Compared with AD5242BRUZ10 and MAX5487ETE+T, the ISL22346WMVEP uniquely delivers quad-channel integration, non-volatile wiper storage, and full -55°C to +125°C operation per DSCC VID-making it the only option qualified for embedded defense and avionics calibration where reliability, persistence, and channel density are mandatory.
Availability
ISL22346WMVEP is available at Aetrix Electronics and suitable for avionics sensor calibration, defense system bias trimming, and industrial process controller applications requiring stable component supply under extended temperature and long lifecycle conditions.
Supply support for ISL22346WMVEP 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 acquired Intersil in 2017 and maintains its high-reliability analog portfolio, including precision data converters, power management, and interface ICs for industrial, automotive, and aerospace markets.
The ISL22346WMVEP belongs to Intersil's Enhanced Product (EP) line, designed specifically for defense, space, and critical infrastructure applications demanding guaranteed supply, full traceability, and extended temperature operation without up-screening.
FAQ
What is the operating temperature range of the ISL22346WMVEP?
The ISL22346WMVEP is fully specified from -55°C to +125°C per DSCC Vendor Item Drawing V62/08605-01XE. This MIL-TEMP rating is validated across all electrical parameters-including wiper resistance, total resistance tolerance, and I²C timing-and applies to both functional operation and data retention. The ISL22346WMVEP maintains guaranteed performance throughout this range without derating.
Does the ISL22346WMVEP retain wiper settings after power loss?
Yes. The ISL22346WMVEP stores wiper positions in non-volatile Initial Value Registers (IVRs) that retain data for 10 years at +125°C, 15 years at +90°C, and 50 years at +55°C. At power-up, the device automatically loads each IVR into its corresponding volatile Wiper Register (WR), restoring the last-saved setting without host intervention or external memory.
How many devices can share the same I²C bus with the ISL22346WMVEP?
Up to eight ISL22346WMVEP devices can operate on a single I²C bus. This is enabled by three hardware address pins (A0, A1, A2), each configurable as logic high or low, yielding 2³ = 8 unique 7-bit slave addresses. No software address reconfiguration is required-addressing is fixed at hardware design time.
What is the maximum wiper resistance of the ISL22346WMVEP?
The ISL22346WMVEP has a typical wiper resistance of 70Ω at VCC = 3.3V, with no maximum value specified in the datasheet. This low on-resistance minimizes insertion error in precision analog paths-especially critical when used in op-amp feedback networks or sensor bridge biasing-where even small series resistance degrades accuracy and stability.
Is the ISL22346WMVEP pin-compatible with other Intersil XDCP devices?
No. The ISL22346WMVEP uses a unique 20-pin TSSOP pinout optimized for quad DCP routing (four RH/RL/RW triplets plus I²C and address pins). It is not pin-compatible with dual or single DCP variants like ISL22316 or ISL22326, which use different lead counts and terminal arrangements. PCB layout must be designed specifically for the ISL22346WMVEP footprint.
ISL22346WMVEP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- XDCP™
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Bag
- Product Status:
- Active
- 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:
- -
- Tolerance:
- -
- Temperature Coefficient (Typ):
- -
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 20-TSSOP
- Operating Temperature:
- -55°C ~ 125°C
- Resistance - Wiper (Ohms) (Typ):
- 70
ISL22346WMVEP FAQ
1.How can I place an order for ISL22346WMVEP through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL22346WMVEP 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 ISL22346WMVEP reliable?
The price and inventory of ISL22346WMVEP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL22346WMVEP is usually 5 days.
3.What payment methods are accepted for ISL22346WMVEP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL22346WMVEP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL22346WMVEP?
ISL22346WMVEP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL22346WMVEP 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 ISL22346WMVEP?
For technical support, including ISL22346WMVEP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL22346WMVEP requirements.
6.How does Aetrix verify that ISL22346WMVEP is sourced from the original manufacturer or authorized distributors?
All ISL22346WMVEP 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 ISL22346WMVEP meets industry standards.
7.What is the process for return or replacement of ISL22346WMVEP?
All ISL22346WMVEP units undergo pre-shipment inspection (PSI). If there is an issue with ISL22346WMVEP, 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 ISL22346WMVEP part is unused and in its original packaging.
Return procedure for ISL22346WMVEP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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