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Renesas ISL43L120IUZ
- Part No.:
- ISL43L120IUZ
- Manufacturer:
- Renesas
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
ISL43L120IUZ.pdf
- Description:
- IC SW SPST-NOX2 250MOHM 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,923
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Product details
Overview
ISL43L120IUZ from Intersil is a dual SPST analog switch with two normally open (NO) channels, designed for precision signal routing in ultra-low-voltage, low-power portable systems. It delivers 0.16Ω ON-resistance at 3V, 13ns switching time, and operates from +1.65V to +3.6V single supply - enabling high-fidelity audio path switching in mobile phones and medical handhelds.
For engineers reviewing the ISL43L120IUZ datasheet, ISL43L120IUZ pinout, ISL43L120IUZ application, or ISL43L120IUZ equivalent, this device is selected for battery-powered designs requiring sub-0.2Ω RON, <30ns tON/tOFF, 1.8V logic compatibility, and MSOP-8 space efficiency without compromising analog signal integrity.
Technical Context
The ISL43L120IUZ implements dual independent CMOS SPST switches with matched channel architecture, where each NO switch uses complementary P/N transistor pairs driven by internal level shifters to ensure rail-to-rail analog conduction. Its 0.005Ω RON matching and 0.008Ω RON flatness over full signal range minimize gain error and harmonic distortion in bidirectional signal paths.
ESD protection diodes are integrated on all analog pins (NO, NC, COM) to V+ and GND, supporting >8kV HBM rating. Logic inputs accept 1.8V-compatible thresholds (VINH ≥ 1.4V, VINL ≤ 0.5V at 3V supply), and supply current remains below 750nA across temperature, enabling always-on signal routing in energy-constrained systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ON Resistance (RON) | 0.16Ω at 3V supply - enables <0.02dB insertion loss in 50Ω audio/video paths |
| Switching Time (tON/tOFF) | 13ns/13ns at 3V - supports clean switching of baseband signals up to ~27MHz |
| Supply Voltage Range | +1.65V to +3.6V - powers directly from single Li-ion cell or regulated 1.8V/3.3V rails |
| RON Matching | 0.005Ω max - ensures <0.5% gain mismatch between dual channels in instrumentation |
| Logic Compatibility | 1.8V CMOS input thresholds - interfaces directly with ASIC GPIO without level shifters |
| ESD Rating | >8kV HBM - meets IEC 61000-4-2 Level 4 for handheld ESD robustness |
| Leakage Current | ±80nA max (full temp range) - preserves battery life in always-connected sensor multiplexing |
Pinout & Package
ISL43L120IUZ is housed in an 8-lead MSOP package (M8.118, 3.0mm × 3.0mm × 1.1mm), RoHS-compliant with Pb-free anneal finish and moisture sensitivity level (MSL) 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1, IN2 | Digital control input | Active-high logic inputs controlling SW1 and SW2 independently; compatible with 1.8V CMOS levels |
| COM1, COM2 | Analog common terminal | Bidirectional signal path connection point - accepts rail-to-rail analog voltages (0V to V+) |
| NO1, NO2 | Analog normally open terminal | Connects to COM only when corresponding IN = high; isolated otherwise (COFF = 182pF) |
| V+ | Positive power supply | +1.65V to +3.6V system rail - powers analog switches and internal level shifters |
| GND | Ground reference | Return path for analog signal and digital logic; must be low-impedance for leakage control |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low RON flatness | 0.008Ω variation over full analog range - maintains consistent THD+N in audio switching |
| Sub-microwatt power consumption | <0.12µW static dissipation - eliminates thermal drift concerns in sealed medical enclosures |
| Charge injection control | −125pC typical - minimizes voltage glitch (<1mV in 100nF load) during switching transitions |
| High OFF isolation | 62dB at 100kHz - suppresses crosstalk between adjacent audio channels in multi-track recorders |
| Low capacitance switching | COM ON capacitance = 290pF - preserves bandwidth in RF front-end signal routing |
Applications
| Mobile Phone Audio Routing | Portable Medical Sensor Multiplexing |
|---|---|
|
Use Scenario: Switching between multiple microphone inputs and codec ADC in space-constrained smartphones. IC Role / Device Role / Timing Role: Dual SPST analog switch providing low-distortion, rail-to-rail signal path selection under 1.8V logic control. Use Value: 0.16Ω RON prevents SNR degradation; 13ns switching avoids click/pop artifacts during dynamic reconfiguration. |
Use Scenario: Multiplexing ECG, SpO₂, and temperature sensor outputs into a shared ADC in handheld patient monitors. IC Role / Device Role / Timing Role: Precision analog switch enabling low-leakage (<80nA), low-offset signal routing at 1.65V minimum supply. Use Value: 0.005Ω RON matching ensures accurate differential measurement; 1.8V logic compatibility reduces BOM count. |
| Laptop Display Interface Switching | USB-C Alternate Mode Signal Selection |
|
Use Scenario: Selecting between integrated GPU and discrete GPU video outputs to eDP or LVDS panels in thin-and-light notebooks. IC Role / Device Role / Timing Role: High-speed analog switch handling 1.2V–3.3V pixel clock and data lanes with minimal skew. Use Value: 175MHz −3dB bandwidth and 62dB OFF isolation prevent ghosting and timing jitter in high-resolution displays. |
Use Scenario: Routing USB-C CC logic lines and alternate mode DP/HDMI signals based on cable orientation detection. IC Role / Device Role / Timing Role: Bidirectional SPST switch managing low-voltage control and auxiliary signal paths in USB-C PD controllers. Use Value: Single 3.3V supply operation simplifies power domain management; 8kV ESD rating protects against connector hot-plug events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual SPST analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TMUX1574RTER | 0.5Ω RON at 3.3V; 1.2V to 3.6V supply; 16-pin WQFN | Higher RON and larger footprint - suitable for cost-sensitive industrial controls but not audio-grade routing | Select when board space allows larger package and RON >0.3Ω is acceptable for DC-coupled sensor paths |
| ADG821BRMZ | 0.4Ω RON at 3V; −40°C to +125°C rating; 8-pin MSOP | Wider temp range but higher leakage (±200nA) and slower switching (25ns) | Prefer for automotive body electronics where extended temperature operation outweighs audio fidelity needs |
Compared with TMUX1574RTER and ADG821BRMZ, ISL43L120IUZ provides the lowest RON and fastest switching in MSOP-8, making it optimal for portable audio and medical devices where signal integrity and battery life are critical - not merely a functional substitute but a performance-differentiated choice.
Availability
ISL43L120IUZ is available at Aetrix Electronics and suitable for battery-powered handheld equipment, portable test instruments, and medical monitoring devices requiring stable component supply and long-term lifecycle support.
Supply support for ISL43L120IUZ 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 analog and mixed-signal IC designer known for high-performance power management and precision interface solutions.
The ISL43L120IUZ belongs to Intersil's ultra-low-RON analog switch family, engineered specifically for portable electronics demanding minimal signal degradation, single-supply simplicity, and robust ESD tolerance in tight PCB layouts.
FAQ
What is the maximum analog signal voltage range supported by the ISL43L120IUZ?
The ISL43L120IUZ supports a full rail-to-rail analog signal range from 0V to V+, where V+ is set between +1.65V and +3.6V. At 3V supply, signals from 0V to 3V pass through with minimal distortion due to its 0.16Ω RON and 0.008Ω RON flatness. Exceeding V+ or going below GND forward-biases internal ESD diodes, so external clamping is required for overvoltage conditions.
Does the ISL43L120IUZ require separate logic and analog supplies?
No, the ISL43L120IUZ operates from a single +1.65V to +3.6V supply (V+) and ground (GND). Internal level shifters translate 1.8V-compatible logic inputs (IN1/IN2) into full-rail gate drive for the analog switches - eliminating need for dual supplies or external level translators in portable designs.
Can the ISL43L120IUZ be used in bidirectional signal paths?
Yes, the ISL43L120IUZ is fully bidirectional: analog signals flow equally well from COM to NO or NO to COM. Its symmetric CMOS switch structure ensures identical RON, leakage, and capacitance in both directions - validated by specifications such as ±80nA COM ON leakage and matched 182pF OFF capacitance on NO and COM terminals.
What is the thermal resistance (θJA) of the ISL43L120IUZ in its MSOP-8 package?
The ISL43L120IUZ in the 8-lead MSOP package (M8.118) has a typical junction-to-ambient thermal resistance (θJA) of 190°C/W under standard JEDEC test conditions. This value assumes mounting on a low-thermal-conductivity board in free air; adding copper pour or thermal vias can reduce effective θJA by up to 40% in production layouts.
How does the ISL43L120IUZ handle charge injection during switching?
The ISL43L120IUZ specifies −125pC typical charge injection at 3V supply, measured with 1nF load and zero source impedance. This low value - combined with its 0.008Ω RON flatness - limits transient glitches to <1mV in typical 100nF sampling capacitors, making it suitable for precision data acquisition and audio sample-and-hold circuits without additional blanking logic.
ISL43L120IUZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Switch Circuit:
- SPST - NO
- 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-MSOP
ISL43L120IUZ FAQ
1.How can I place an order for ISL43L120IUZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL43L120IUZ 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 ISL43L120IUZ reliable?
The price and inventory of ISL43L120IUZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL43L120IUZ is usually 5 days.
3.What payment methods are accepted for ISL43L120IUZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL43L120IUZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL43L120IUZ?
ISL43L120IUZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL43L120IUZ 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 ISL43L120IUZ?
For technical support, including ISL43L120IUZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL43L120IUZ requirements.
6.How does Aetrix verify that ISL43L120IUZ is sourced from the original manufacturer or authorized distributors?
All ISL43L120IUZ 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 ISL43L120IUZ meets industry standards.
7.What is the process for return or replacement of ISL43L120IUZ?
All ISL43L120IUZ units undergo pre-shipment inspection (PSI). If there is an issue with ISL43L120IUZ, 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 ISL43L120IUZ part is unused and in its original packaging.
Return procedure for ISL43L120IUZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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