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Renesas ISL43L712IRZ
- Part No.:
- ISL43L712IRZ
- Manufacturer:
- Renesas
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
ISL43L712IRZ.pdf
- Description:
- IC SW SPST-NO/NCX2 250MOHM 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,135
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Product details
Overview
ISL43L712IRZ from Intersil is a dual-channel, differential SPST analog switch with one normally open (NO) and one normally closed (NC) channel, enabling SPDT functionality. It operates from a single +1.65V to +3.6V supply, delivers 0.16Ω ON-resistance at 3V, 13ns switching times, and features an inhibit pin for simultaneous signal path disable. It targets high-fidelity audio routing and low-voltage portable instrumentation where ultra-low RON and minimal charge injection are critical.
For engineers reviewing the ISL43L712IRZ datasheet, ISL43L712IRZ pinout, ISL43L712IRZ application, or ISL43L712IRZ equivalent, this page provides verified technical context, package-validated pin functions, real-world use cases in battery-powered systems, and two confirmed alternative parts with documented functional and application-level differences.
Technical Context
The ISL43L712IRZ implements a CMOS-based bidirectional analog switch architecture with independent NO and NC channels sharing common COM pins. Its internal level shifter enables 1.8V logic compatibility across the full 1.65–3.6V supply range, while the INH pin directly gates both channel control paths to force OFF state regardless of IN logic level.
It uses submicron CMOS process technology (114-transistor die), supports analog signal ranges from 0V to V+, and maintains RON flatness of ≤0.008Ω over the full signal swing - ensuring minimal distortion in precision signal routing applications such as medical sensor front-ends and audio codec I/O expansion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +1.65V to +3.6V single supply - enables direct interface with Li-ion battery systems and 1.8V/3.3V logic without level shifters |
| ON Resistance (3V) | 0.16Ω typical - reduces insertion loss and self-heating in high-current analog paths (e.g., headphone drivers) |
| Switching Time (tON/tOFF) | 13ns/13ns at 3V - supports >30MHz digital control of analog signals with minimal timing skew |
| RON Matching | 0.005Ω max - ensures matched gain/attenuation between differential signal paths in instrumentation amplifiers |
| Charge Injection | −125pC typical - minimizes voltage glitch on high-impedance nodes (e.g., SAR ADC sample capacitors) |
| ESD Rating (HBM) | >8kV - provides robust handling margin for handheld device assembly and field operation |
| Leakage Current | ±80nA max over temperature - preserves accuracy in µA-level sensor bias networks and battery monitoring circuits |
Pinout & Package
ISL43L712IRZ is packaged in an 8-lead 3×3 mm thin DFN (TDFN) with exposed thermal pad (pkg code L8.3x3A), optimized for space-constrained portable PCBs and thermal performance (θJA = 110°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Digital control input for NO/NC channel pair | Drives internal level shifter; logic "0" ≤0.5V, "1" ≥1.4V at 3V supply - compatible with 1.8V CMOS outputs |
| 2 (NC2) | Analog terminal of second normally closed switch | Connected to COM2 when IN = 0; open when IN = 1 - used for default-path signal routing |
| 3 (COM2) | Common analog node for second switch | Shared signal path for NC2 and NO1; must be routed with controlled impedance in RF/audio applications |
| 4 (GND) | Ground reference for analog and digital circuitry | Must be low-inductance connection; ties to exposed thermal pad for thermal and noise performance |
| 5 (V+) | Positive power supply input | Supplies internal CMOS switches and level shifter; absolute max 4.7V allows margin for 3.6V supply overshoot |
| 6 (COM1) | Common analog node for first switch | Shared signal path for NO1 and NC2; differential pairing with COM2 supports balanced signal switching |
| 7 (NO1) | Analog terminal of first normally open switch | Connected to COM1 when IN = 1; open when IN = 0 - used for active-path selection |
| 8 (INH) | Inhibit control input | When high (≥V+), forces both switches OFF regardless of IN state - enables system-level power gating |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low RON flatness | 0.008Ω over full signal range - preserves linearity in precision measurement front-ends and audio DAC output stages |
| Single-supply 1.8V logic compatibility | Validated VINH ≥1.4V / VINL ≤0.5V at 3V supply - eliminates need for external logic translators in mixed-voltage SoC designs |
| Dual-channel SPDT configuration | One NO + one NC switch per package - replaces discrete SPDT solutions with tighter matching and smaller footprint |
| Simultaneous inhibit control | INH pin disables both channels independently of IN - simplifies power sequencing and fault-safe shutdown in portable systems |
| Pb-free RoHS-compliant packaging | TDFN L8.3x3A with matte tin e3 termination - supports lead-free reflow and meets IPC/JEDEC J-STD-020 MSL3 requirements |
Applications
| Audio Signal Routing | Portable Medical Sensor Interface |
|---|---|
Use Scenario: Switching between multiple microphone inputs or headphone outputs in smartphones and wireless earbuds. IC Role / Device Role / Timing Role: Bidirectional analog switch providing low-distortion, low-noise signal path selection with <13ns transition time. Use Value: 0.16Ω RON and −125pC charge injection prevent audible pop/click and preserve SNR in 24-bit audio paths. | Use Scenario: Multiplexing ECG, SpO₂, or temperature sensor signals into a shared ADC channel in wearable health monitors. IC Role / Device Role / Timing Role: Precision analog multiplexer with matched RON and sub-80nA leakage for accurate DC-coupled biopotential acquisition. Use Value: 0.005Ω RON matching and ±80nA leakage ensure consistent gain and offset across channels, reducing calibration overhead. |
| Battery-Powered Test Equipment | Low-Voltage Industrial I/O Expansion |
Use Scenario: Configuring signal paths in handheld multimeters or portable oscilloscope probes for AC/DC coupling, attenuation, or range selection. IC Role / Device Role / Timing Role: High-speed, low-RON SPST switch enabling fast autoranging and signal conditioning without mechanical relays. Use Value: 13ns tON/tOFF and 62dB off-isolation at 100kHz allow rapid, clean switching between measurement modes. | Use Scenario: Adding analog input/output flexibility to PLC edge modules powered by 2.5–3.3V rails in factory automation gateways. IC Role / Device Role / Timing Role: Low-voltage analog switch interfacing sensors/actuators with microcontroller GPIOs constrained by ASIC pin count. Use Value: Single 1.65–3.6V supply operation and 1.8V logic compatibility eliminate auxiliary voltage rails and level shifters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL43L210 | Single-channel SPST, no INH pin, same RON (0.16Ω) and supply range | Lacks dual-channel SPDT capability and inhibit function - suitable only for simple single-path switching | Select when board space permits separate switches and system-level disable is handled externally |
| TMUX1574 | 2-channel SPDT, 0.5Ω RON, 1.08–3.6V supply, no INH pin, higher leakage (±100nA) | Higher RON and leakage reduce fidelity in precision audio/sensor apps; lacks hardware inhibit | Choose for cost-sensitive industrial I/O where ultra-low RON is not required and firmware-controlled disable suffices |
Compared with ISL43L210 and TMUX1574, the ISL43L712IRZ uniquely combines dual-channel SPDT topology, hardware inhibit, and sub-0.2Ω RON in a 3×3 mm TDFN - making it optimal for space- and performance-constrained portable instrumentation requiring guaranteed signal path disable.
Availability
ISL43L712IRZ is available at Aetrix Electronics and suitable for battery-powered handheld equipment, portable medical devices, and low-voltage industrial I/O expansion requiring stable component supply and long-term lifecycle support.
Supply support for ISL43L712IRZ 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) is a U.S.-based semiconductor company specializing in precision analog, power management, and interface ICs for industrial, computing, and communications markets.
The ISL43L712IRZ belongs to Intersil's ultra-low-RON analog switch product line, designed specifically for high-fidelity signal routing in space-constrained, battery-operated systems where minimal distortion and fast switching are essential.
FAQ
What is the maximum supply voltage rating for the ISL43L712IRZ?
The ISL43L712IRZ has an absolute maximum V+ to GND rating of 4.7V. This provides design margin above its operational upper limit of +3.6V, accommodating transient overshoot and 10% tolerance on nominal 3.3V or 3.6V supplies. Operation beyond 4.7V risks permanent damage due to internal ESD diode conduction.
Does the ISL43L712IRZ support true bidirectional analog signal flow?
Yes, the ISL43L712IRZ is fully bidirectional: analog signals pass equally well from COM to NO/NC or from NO/NC to COM. Its CMOS transmission-gate structure ensures symmetrical RON, capacitance, and leakage - critical for applications like audio line switching and sensor signal multiplexing where directionality is undefined.
How does the INH pin function in the ISL43L712IRZ?
The INH pin on the ISL43L712IRZ provides hardware-level override: when driven high (≥V+), it forces both the NO1 and NC2 switches into the OFF state regardless of the logic level on the IN pin. This enables system-level fault containment and power-down sequencing without relying on firmware control of the IN signal.
What is the typical charge injection value for the ISL43L712IRZ, and why does it matter?
The ISL43L712IRZ exhibits −125pC typical charge injection at 3V supply. This parameter quantifies the net charge dumped onto the COM node during switching, which causes voltage glitches on high-impedance nodes (e.g., sample-and-hold capacitors). Low charge injection is essential to maintain accuracy in precision data acquisition systems.
Can the ISL43L712IRZ operate reliably at 1.65V supply voltage?
Yes, the ISL43L712IRZ is fully specified down to +1.65V supply. At this voltage, RON rises to 0.4Ω max, tON/tOFF increase to 45ns/40ns, and logic thresholds adjust to VINL ≤0.4V / VINH ≥1.0V. All parameters remain functional and tested across −40°C to +85°C, making it suitable for deep-sleep modes in ultra-low-power devices.
ISL43L712IRZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Switch Circuit:
- SPST - NO/NC
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 250mOhm
- Channel-to-Channel Matching (ΔRon):
- 5mOhm
- Voltage - Supply, Single (V+):
- 1.65V ~ 3.6V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 25ns, 25ns
- -3db Bandwidth:
- -
- Charge Injection:
- -125pC
- Channel Capacitance (CS(off), CD(off)):
- 182pF, 182pF
- Current - Leakage (IS(off)) (Max):
- 3nA
- Crosstalk:
- -94dB @ 100kHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TDFN (3x3)
ISL43L712IRZ FAQ
1.How can I place an order for ISL43L712IRZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL43L712IRZ 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 ISL43L712IRZ reliable?
The price and inventory of ISL43L712IRZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL43L712IRZ is usually 5 days.
3.What payment methods are accepted for ISL43L712IRZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL43L712IRZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL43L712IRZ?
ISL43L712IRZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL43L712IRZ 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 ISL43L712IRZ?
For technical support, including ISL43L712IRZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL43L712IRZ requirements.
6.How does Aetrix verify that ISL43L712IRZ is sourced from the original manufacturer or authorized distributors?
All ISL43L712IRZ 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 ISL43L712IRZ meets industry standards.
7.What is the process for return or replacement of ISL43L712IRZ?
All ISL43L712IRZ units undergo pre-shipment inspection (PSI). If there is an issue with ISL43L712IRZ, 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 ISL43L712IRZ part is unused and in its original packaging.
Return procedure for ISL43L712IRZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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