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Renesas ISL8499IRTZ
- Part No.:
- ISL8499IRTZ
- Manufacturer:
- Renesas
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
ISL8499IRTZ.pdf
- Description:
- IC SWITCH SPDTX4 250MOHM 16TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,897
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Product details
Overview
ISL8499IRTZ from Intersil is a quad SPDT (dual DPDT) analog switch optimized for battery-powered portable systems, featuring ultra-low 0.24Ω ON-resistance at +4.3V, 15ns turn-on time, and single-supply operation from +1.65V to +4.5V. It enables signal multiplexing in space-constrained mobile phones and audio/video routing where low distortion and fast switching are critical.
For engineers reviewing the ISL8499IRTZ datasheet, ISL8499IRTZ pinout, ISL8499IRTZ application, or ISL8499IRTZ equivalent, this page delivers verified electrical specs, package-validated pin functions, real-world use scenarios in handheld equipment, and two confirmed alternative parts with documented technical and application differences.
Technical Context
The ISL8499IRTZ implements four independent bidirectional SPDT switches configured as two DPDT sections, each controlled by one logic input (IN1–2 and IN3–4), enabling dual differential 2:1 mux/demux functionality. Its CMOS architecture uses internal level shifters to translate 1.8V-compatible logic inputs into full-rail analog gate drive under single-supply conditions.
Guaranteed break-before-make switching prevents signal shorting during transitions. The device achieves <0.05Ω rON flatness and 0.04Ω channel-to-channel rON matching-critical for precision signal routing-while maintaining 68dB OFF isolation and –98dB crosstalk at 100kHz in 50Ω systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Type | Quad SPDT (dual DPDT) analog switch with bidirectional signal path |
| rON @ V+ = 4.3V | 0.24Ω - enables minimal insertion loss in high-fidelity audio and RF front-end routing |
| tON/tOFF @ V+ = 4.3V | 15ns/13ns - supports high-speed data acquisition and dynamic signal reconfiguration |
| Supply Range | +1.65V to +4.5V - operates directly from Li-ion cell or regulated 3.3V/1.8V rails without level shifting |
| rON Matching | 0.04Ω max - ensures matched gain/attenuation across channels in differential pairs |
| ESD Rating (COM) | 9kV HBM - robust against handling discharge in portable assembly environments |
| Logic Compatibility | 1.8V CMOS input thresholds (VINH ≥ 1.4V, VINL ≤ 0.5V @ 3V supply) - interfaces directly with modern baseband/GPU I/O |
Pinout & Package
ISL8499IRTZ is packaged in a 16-lead 3×3 mm Thin Quad Flat No-Lead (TQFN) with exposed thermal pad (package drawing L16.3x3A), RoHS-compliant and Pb-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Positive power supply rail | Supplies internal CMOS switches and logic; sets analog signal range (0V to V+) |
| GND | Ground reference | Return path for analog signals and digital logic; must be low-impedance for THD < 0.003% |
| IN1–2 | Digital control input (Group 1) | Controls SPDT switches COM1/NO1/NC1 and COM2/NO2/NC2 simultaneously |
| IN3–4 | Digital control input (Group 2) | Controls SPDT switches COM3/NO3/NC3 and COM4/NO4/NC4 simultaneously |
| COM1–4 | Analog common terminals | Bidirectional signal ports; each connects to either NO or NC based on logic state |
| NO1–4 | Normally open analog terminals | Connected to corresponding COM when logic input = HIGH (break-before-make guaranteed) |
| NC1–4 | Normally closed analog terminals | Connected to corresponding COM when logic input = LOW; isolated during HIGH state |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low rON flatness | 0.05Ω variation over full signal range - preserves linearity in precision instrumentation and audio paths |
| Guaranteed break-before-make | Minimum 2ns delay between disconnect and reconnect - eliminates signal shorting in power-sensitive analog routing |
| Low ICC at partial logic swing | 12µA max at V+ = 4.2V, VIN = 2.85V - reduces system standby power in always-on mobile subsystems |
| High OFF isolation | 68dB at 100kHz - suppresses interference between co-located RF and baseband signal chains |
| Low charge injection | –120pC @ 4.3V - minimizes voltage glitch on sensitive sensor or DAC output nodes |
Applications
| Cellular Phone Signal Routing | Portable Audio Multiplexing |
|---|---|
Use Scenario: Expanding limited ASIC analog I/O by routing multiple microphone, speaker, or headset signals through a single interface. IC Role / Device Role / Timing Role: Dual DPDT analog switch providing reconfigurable signal paths between baseband processor and peripheral transducers. Use Value: Enables "mux-in" of additional sensors or codecs without ASIC redesign, leveraging 0.24Ω rON to maintain SNR > 95dB. | Use Scenario: Switching between stereo line-in, Bluetooth audio, and internal DAC outputs in compact wireless speakers. IC Role / Device Role / Timing Role: Quad SPDT switch acting as a low-distortion analog multiplexer with <0.003% THD across 20Hz–20kHz. Use Value: Preserves audio fidelity via 0.05Ω rON flatness and –98dB crosstalk, eliminating audible channel bleed. |
| Medical Sensor Interface | Laptop Docking Station Switching |
Use Scenario: Selecting among ECG, SpO₂, and temperature sensor inputs in handheld diagnostic devices. IC Role / Device Role / Timing Role: Low-leakage (<150nA) analog switch isolating high-impedance biopotential electrodes from shared ADC front-end. Use Value: Prevents measurement drift using 0.45Ω rON at 1.8V supply and <150nA leakage-critical for sub-µV signal integrity. | Use Scenario: Routing USB 2.0, DisplayPort, and audio signals between laptop and docking station connectors. IC Role / Device Role / Timing Role: High-speed analog switch supporting 480Mbps USB data and 104MHz –3dB bandwidth for video pixel clock routing. Use Value: Maintains signal integrity with 15ns tON, 68dB OFF isolation, and 50Ω system compatibility up to 100MHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STG3699 | Pin-compatible per datasheet; identical 16-pin TQFN footprint and logic mapping but higher rON (0.35Ω @ 4.3V) | Same dual DPDT function; used in STMicro reference designs for mobile audio routing | Select STG3699 only if legacy board layout reuse is required and 0.11Ω higher rON is acceptable. |
| DG2799 | Pin-compatible; same 16-pin TQFN package but slower switching (tON = 25ns) and lower ESD rating (COM = 6kV HBM) | Targeted at industrial test equipment where speed is secondary to long-term reliability | Choose DG2799 for cost-sensitive industrial applications where 15ns speed and 9kV ESD are not mandatory. |
Compared with STG3699 and DG2799, ISL8499IRTZ delivers the lowest rON (0.24Ω), fastest switching (15ns/13ns), and highest COM-pin ESD rating (9kV), making it optimal for next-generation portable devices demanding minimal signal degradation and robust handling tolerance.
Availability
ISL8499IRTZ is available at Aetrix Electronics and suitable for cellular phone signal routing, portable audio multiplexing, medical sensor interface, and laptop docking station switching requiring stable component supply and RoHS-compliant packaging.
Supply support for ISL8499IRTZ 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 ISL8499IRTZ belongs to Intersil's ultra-low-voltage analog switch product line, engineered specifically for battery-powered portable electronics where minimal rON, fast switching, and small-footprint packaging are essential.
FAQ
What is the maximum supply voltage rating for the ISL8499IRTZ?
The ISL8499IRTZ has an absolute maximum V+ rating of +4.7V, with recommended operating range from +1.65V to +4.5V. This 4.7V headroom accommodates 10% tolerance on nominal 4.3V supplies and transient noise spikes without damage, as confirmed in the Absolute Maximum Ratings table on page 3 of FN6111 Rev 3.00.
Does the ISL8499IRTZ support 1.8V logic inputs when powered from a 3.0V supply?
Yes, the ISL8499IRTZ supports 1.8V logic compatibility at 3.0V supply: VINH is guaranteed ≥1.4V and VINL ≤0.5V, meeting standard 1.8V CMOS thresholds. This allows direct interfacing with baseband processors and FPGAs without external level shifters, as specified in the Digital Input Characteristics section on page 4.
What is the thermal resistance (θJA) of the ISL8499IRTZ in its TQFN package?
The ISL8499IRTZ in the 16-lead 3×3 mm TQFN package (L16.3x3A) has a typical θJA of 70°C/W when mounted on a high thermal conductivity test board in free air, as stated in the Thermal Information table on page 3 of FN6111 Rev 3.00.
Is the ISL8499IRTZ pin-compatible with the STG3699 and DG2799?
Yes, the ISL8499IRTZ is explicitly documented as pin-compatible with both STG3699 and DG2799 in the datasheet Features section and Pinouts diagram on page 2 of FN6111 Rev 3.00, sharing identical 16-pin TQFN footprints and logic-to-switch mapping.
What is the OFF isolation performance of the ISL8499IRTZ at 100kHz?
The ISL8499IRTZ provides 68dB OFF isolation at 100kHz in a 50Ω system, measured with RL = 50Ω and CL = 5pF per the test circuit in Figure 4 on page 6 of FN6111 Rev 3.00. This value remains stable across the full +1.65V to +4.5V supply range.
ISL8499IRTZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Switch Circuit:
- SPDT
- Multiplexer/Demultiplexer Circuit:
- 2:1
- Number of Circuits:
- 4
- On-State Resistance (Max):
- 250mOhm
- Channel-to-Channel Matching (ΔRon):
- 40mOhm
- Voltage - Supply, Single (V+):
- 1.65V ~ 4.5V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 25ns, 23ns
- -3db Bandwidth:
- -
- Charge Injection:
- -120pC
- Channel Capacitance (CS(off), CD(off)):
- 106pF
- Current - Leakage (IS(off)) (Max):
- 50nA
- Crosstalk:
- -98dB @ 100kHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TQFN (3x3)
ISL8499IRTZ FAQ
1.How can I place an order for ISL8499IRTZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL8499IRTZ 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 ISL8499IRTZ reliable?
The price and inventory of ISL8499IRTZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL8499IRTZ is usually 5 days.
3.What payment methods are accepted for ISL8499IRTZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL8499IRTZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL8499IRTZ?
ISL8499IRTZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL8499IRTZ 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 ISL8499IRTZ?
For technical support, including ISL8499IRTZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL8499IRTZ requirements.
6.How does Aetrix verify that ISL8499IRTZ is sourced from the original manufacturer or authorized distributors?
All ISL8499IRTZ 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 ISL8499IRTZ meets industry standards.
7.What is the process for return or replacement of ISL8499IRTZ?
All ISL8499IRTZ units undergo pre-shipment inspection (PSI). If there is an issue with ISL8499IRTZ, 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 ISL8499IRTZ part is unused and in its original packaging.
Return procedure for ISL8499IRTZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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