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Renesas ISL84684IRZ
- Part No.:
- ISL84684IRZ
- Manufacturer:
- Renesas
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
ISL84684IRZ.pdf
- Description:
- IC SWITCH SPDTX2 500MOHM 10TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,243
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Product details
Overview
ISL84684IRZ from Intersil is a dual SPDT analog switch optimized for low-voltage, battery-powered systems. It delivers 0.35 Ω ON-resistance at +3.0V supply, 50 ns turn-on time, and guaranteed break-before-make switching - enabling high-fidelity signal routing in space-constrained mobile phones and portable medical devices.
For engineers reviewing the ISL84684IRZ datasheet, ISL84684IRZ pinout, ISL84684IRZ application, or ISL84684IRZ equivalent, this page provides verified package mapping (10-lead 3×3 TDFN), confirmed rON matching (0.055 Ω), ESD rating (>8 kV HBM), logic compatibility with 1.8 V inputs at +3 V supply, and validated dual 2:1 multiplexer operation.
Technical Context
The ISL84684IRZ implements two independent, bidirectional SPDT switches with normally open (NO) and normally closed (NC) terminals per channel, configured as a committed dual 2-to-1 multiplexer. Its submicron CMOS process enables rail-to-rail analog signal handling (0 V to V+) and precise digital control via 1.8 V–compatible logic thresholds (VINH = 1.4 V, VINL = 0.4 V at +3 V).
Switching is governed by internal level shifters that translate logic inputs into full-swing gate drive for NMOS/PMOS transistor pairs. The architecture guarantees break-before-make timing (9 ns typical) and minimizes charge injection (94 pC at +3 V), supporting audio and precision sensor signal paths without distortion or glitch-induced transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ON-resistance (rON) | 0.35 Ω at +3.0V supply - ensures <0.02 dB insertion loss in 50 Ω audio/video paths |
| rON matching | 0.055 Ω max between channels - maintains amplitude balance in differential or stereo routing |
| Turn-on / turn-off time | 50 ns / 27 ns at +3.0V - supports >10 MHz digital control rates without pulse distortion |
| Analog signal range | 0 V to V+ (up to +3.6V) - enables direct interface with ADCs, DACs, and baseband ICs |
| Logic compatibility | 1.8 V input threshold at +3 V supply - interoperates with modern low-voltage ASIC GPIOs |
| ESD rating (HBM) | >8 kV - meets IEC 61000-4-2 Level 4 system-level ESD robustness requirements |
| Supply voltage range | +1.65V to +3.6V - operates from single Li-ion cell (fully charged to depleted) without regulation |
Pinout & Package
ISL84684IRZ is packaged in a 10-lead 3×3 mm Thin Dual Flat No-Lead (TDFN) with exposed thermal pad (package code L10.3x3A). Pin 1 is marked by a dot or notch on the top surface; the exposed paddle must be soldered to GND for optimal thermal and ESD performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Positive power supply input | Supplies internal CMOS switches and level shifters; accepts +1.65V to +3.6V; requires 100 Ω series resistor for enhanced latch-up immunity |
| GND | Ground reference | Return path for analog signals and digital logic; must connect to exposed paddle for thermal stability |
| IN1, IN2 | Digital control inputs | Accept 1.8 V–compatible logic; VINH ≥ 1.4 V, VINL ≤ 0.4 V at +3 V supply; low leakage (<0.5 μA) |
| COM1, COM2 | Analog common terminals | Bidirectional signal ports; support rail-to-rail analog swing (0 V to V+); max ±300 mA continuous current |
| NO1, NO2 | Normally open analog outputs | Connect to COM when IN = 0; 65 pF OFF capacitance minimizes feedthrough in high-frequency paths |
| NC1, NC2 | Normally closed analog outputs | Connect to COM when IN = 0; matched rON and flatness ensure consistent channel performance |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low rON flatness | 0.03 Ω over full signal range - preserves linearity in precision instrumentation and audio gain stages |
| Guaranteed break-before-make | 9 ns minimum delay - prevents momentary short-circuit during channel switching in power-sensitive circuits |
| Low charge injection | 94 pC at +3 V - avoids DC offset shifts in sampled-data systems like sensor front-ends and data acquisition |
| High off isolation | 62 dB at 100 kHz - suppresses crosstalk between adjacent channels in multi-signal portable equipment |
| Pb-free RoHS compliance | Pb-free plus anneal construction with 100% matte tin terminations - compatible with SnPb and Pb-free reflow profiles |
Applications
| Cellular Phone Front-End | Portable Medical Sensor Hub |
|---|---|
Use Scenario: Routing microphone, earpiece, and headset signals through a single ASIC with limited analog I/O pins. IC Role / Device Role / Timing Role: Dual 2:1 analog multiplexer enabling dynamic reconfiguration of audio paths under software control. Use Value: Reduces ASIC design risk and board area by eliminating need for discrete analog switches or additional codec interfaces. |
Use Scenario: Selecting between ECG, SpO₂, and temperature sensor inputs feeding a shared ADC in a handheld diagnostic device. IC Role / Device Role / Timing Role: Low-distortion, low-leakage analog switch providing <60 nA max channel leakage and 0.005% THD. Use Value: Maintains signal integrity across biopotential measurements without calibration drift or cross-channel interference. |
| Laptop Audio Subsystem | Handheld Test Instrument Signal Path |
Use Scenario: Switching between internal speakers, line-out, and headphone outputs while preserving wideband frequency response. IC Role / Device Role / Timing Role: High-bandwidth analog switch with 120 MHz −3 dB bandwidth and <−85 dB crosstalk. Use Value: Enables clean audio routing without audible artifacts or inter-channel bleed in consumer-grade notebooks. |
Use Scenario: Configuring input attenuation, signal coupling (AC/DC), and source termination in a compact multimeter or oscilloscope probe interface. IC Role / Device Role / Timing Role: Precision analog switch with 0.055 Ω rON matching and 0.03 Ω rON flatness for calibrated measurement paths. Use Value: Ensures measurement repeatability and accuracy across multiple ranges without manual recalibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual SPDT analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4684EUB+ | 0.4 Ω rON at +3 V; 65 ns tON; same 10-pin µMAX package but higher thermal resistance (θJA = 200°C/W vs. 110°C/W) | Suitable for lower-speed industrial controls where thermal headroom is available | Select MAX4684EUB+ only if existing PCB layout uses µMAX footprint and thermal derating is acceptable |
| TMUX1574RSVR | 0.5 Ω rON at +3 V; 100 ns tON; supports wider supply (1.08–3.6 V); no guaranteed break-before-make | Better for ultra-low-voltage IoT sensors but lacks timing safety for critical signal routing | Choose TMUX1574RSVR only when operating below +1.65 V or when break-before-make is not required |
Compared with MAX4684EUB+ and TMUX1574RSVR, the ISL84684IRZ offers superior combination of speed (50 ns), low rON (0.35 Ω), guaranteed break-before-make, and thermal efficiency - making it optimal for high-reliability portable audio and medical signal routing where timing integrity and signal fidelity are non-negotiable.
Availability
ISL84684IRZ is available at Aetrix Electronics and suitable for cellular phone front-end design, portable medical sensor hubs, laptop audio subsystems, and handheld test instrument signal paths requiring stable component supply across production lifecycles.
Supply support for ISL84684IRZ 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 power management, precision analog, and interface applications.
The ISL84684IRZ belongs to Intersil's ultra-low rON analog switch family, engineered specifically for battery-powered portable equipment where minimal insertion loss, fast switching, and small-footprint packaging are essential.
FAQ
What is the maximum analog signal voltage range supported by the ISL84684IRZ?
The ISL84684IRZ supports an analog signal range from 0 V to V+, where V+ can be up to +3.6 V. This rail-to-rail capability allows direct interfacing with ADCs, DACs, and baseband processors without level-shifting circuitry. At V+ = +3.3 V, the full analog range is 0–3.3 V, and the device maintains specified rON, leakage, and switching performance across this span.
Does the ISL84684IRZ require external protection components for ESD robustness?
The ISL84684IRZ has >8 kV HBM ESD rating and includes internal protection diodes, but Intersil recommends adding a 100 Ω resistor in series with the V+ pin to prevent latch-up during system-level IEC 61000-4-2 ESD events. This resistor imposes negligible voltage drop (<100 µV) under normal operation due to the device's sub-microamp supply current.
Can the ISL84684IRZ operate from a single 1.8 V supply, and how does performance change?
Yes, the ISL84684IRZ operates down to +1.65 V. At +1.8 V supply, rON increases to 0.55 Ω (vs. 0.35 Ω at +3.0 V), and switching times rise to 70 ns tON/54 ns tOFF. All other specifications - including logic compatibility (VINH = 1.0 V), leakage (<60 nA), and break-before-make - remain fully guaranteed across the −40°C to +85°C temperature range.
Is the ISL84684IRZ pin-compatible with the MAX4684, and what does that mean for PCB design?
Yes, the ISL84684IRZ is pin-compatible with the MAX4684 in the 10-lead TDFN package (L10.3x3A). Pin assignments, footprint dimensions, and thermal pad layout match exactly - enabling direct replacement without PCB modification. However, note that ISL84684IRZ offers lower rON (0.35 Ω vs. 0.4 Ω), faster switching, and improved thermal resistance (110°C/W vs. 200°C/W).
What is the significance of guaranteed break-before-make timing in the ISL84684IRZ?
Guaranteed break-before-make (tD ≥ 9 ns) ensures that the NC path disconnects before the NO path connects during logic transitions. This prevents momentary short-circuits between signal sources - critical in applications like audio routing, sensor multiplexing, and power domain isolation where unintended current paths could cause distortion, measurement error, or damage to upstream drivers.
ISL84684IRZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Switch Circuit:
- SPDT
- Multiplexer/Demultiplexer Circuit:
- 2:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 500mOhm
- Channel-to-Channel Matching (ΔRon):
- 55mOhm
- Voltage - Supply, Single (V+):
- 1.65V ~ 3.6V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 50ns, 27ns
- -3db Bandwidth:
- -
- Charge Injection:
- 94pC
- Channel Capacitance (CS(off), CD(off)):
- 65pF
- Current - Leakage (IS(off)) (Max):
- 4nA
- Crosstalk:
- -85dB @ 100kHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-TDFN (3x3)
ISL84684IRZ FAQ
1.How can I place an order for ISL84684IRZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL84684IRZ 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 ISL84684IRZ reliable?
The price and inventory of ISL84684IRZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL84684IRZ is usually 5 days.
3.What payment methods are accepted for ISL84684IRZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL84684IRZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL84684IRZ?
ISL84684IRZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL84684IRZ 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 ISL84684IRZ?
For technical support, including ISL84684IRZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL84684IRZ requirements.
6.How does Aetrix verify that ISL84684IRZ is sourced from the original manufacturer or authorized distributors?
All ISL84684IRZ 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 ISL84684IRZ meets industry standards.
7.What is the process for return or replacement of ISL84684IRZ?
All ISL84684IRZ units undergo pre-shipment inspection (PSI). If there is an issue with ISL84684IRZ, 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 ISL84684IRZ part is unused and in its original packaging.
Return procedure for ISL84684IRZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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