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Renesas ISL54047IRUZ-T
- Part No.:
- ISL54047IRUZ-T
- Manufacturer:
- Renesas
- Package:
- 10-UFQFN
- Datasheet:
-
ISL54047IRUZ-T.pdf
- Description:
- IC SW SPST-NOX2 450MOHM 10UTQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,643
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Product details
Overview
ISL54047IRUZ-T from Intersil is a dual-channel, bidirectional, differential SPST analog switch optimized for ultra-low on-resistance (0.44 Ω at 4.3 V), high off-isolation (102 dB at 100 kHz into 50 Ω), and fast switching (tON = 40 ns, tOFF = 35 ns) in single-supply battery-powered audio/video routing. It operates from +1.65 V to +4.5 V, supports 1.8 V logic with +3 V supply, and uses T-switch architecture to maximize isolation while minimizing signal path impedance.
For engineers reviewing the ISL54047IRUZ-T datasheet, ISL54047IRUZ-T pinout, ISL54047IRUZ-T application, or ISL54047IRUZ-T equivalent, this page delivers verified electrical specs, package-validated pin functions, real-world use cases in portable audio and medical instrumentation, and two confirmed alternative parts with documented performance trade-offs.
Technical Context
The ISL54047IRUZ-T implements a T-switch topology-three transistors per channel-to decouple the control gate from the analog path, achieving >102 dB off-isolation at 100 kHz while maintaining RON flatness of just 0.07 Ω across the full signal range. Its dual NO switches share one digital control input (IN), enabling synchronized operation without external logic.
Designed for low-voltage CMOS systems, it features rail-to-rail analog signal handling (0 V to V+), sub-1 μA quiescent current at V+ = 4.5 V, and ESD robustness (>8 kV HBM). The 10-lead μTQFN package (1.8 × 1.4 × 0.5 mm) supports high-density portable PCB layouts while meeting RoHS compliance via Pb-free anneal processing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +1.65 V to +4.5 V - Enables direct integration with Li-ion single-cell and regulated 3.3 V/1.8 V logic rails without level shifters. |
| RON (Typ, V+ = 4.3 V) | 0.44 Ω - Delivers <0.01% insertion loss in 600 Ω audio paths and preserves THD at 0.01% (20 Hz–20 kHz). |
| tON/tOFF (V+ = 4.3 V) | 40 ns / 35 ns - Supports clean switching of video sync pulses and high-speed data multiplexing up to 27 MHz bandwidth. |
| Off-Isolation (100 kHz, 50 Ω) | 102 dB - Blocks >99.999% of coupled noise between channels in handheld RF-sensitive applications. |
| RON Matching | 0.04 Ω - Ensures balanced gain and phase response in differential signal paths like stereo audio or sensor pairs. |
| Logic Compatibility | 1.8 V CMOS input threshold (VINH ≥ 1.4 V, VINL ≤ 0.5 V at 3 V supply) - Direct interface with modern low-voltage microcontrollers and baseband processors. |
| Package | 10-lead μTQFN (1.8 × 1.4 × 0.5 mm) - Footprint compatible with IPC-7351B L10.1.8x1.4A land pattern; no leaded alternatives required. |
Pinout & Package
ISL54047IRUZ-T is housed in a 10-lead ultra-thin quad flat no-lead (μTQFN) package measuring 1.8 mm × 1.4 mm × 0.5 mm, with exposed thermal pad (pin 10 = GND) and pin 1 marked by index area. The package is RoHS-compliant and moisture-sensitive level 1 (MSL-1).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Positive power supply input | Accepts +1.65 V to +4.5 V; powers internal CMOS switches and level shifters; requires 100 Ω series resistor for IEC 61000 ESD immunity. |
| NO1, NO2 | Analog switch normally-open terminals | Signal outputs when IN = HIGH; each connects bidirectionally to its COMx pin; 46 pF off-capacitance minimizes feedthrough at RF frequencies. |
| COM1, COM2 | Analog switch common terminals | Signal inputs/outputs shared with NOx; 233 pF on-capacitance ensures minimal loading on driving amplifiers or ADC inputs. |
| IN | Digital control input | Single logic pin controlling both switches; TTL/CMOS-compatible; draws only 12 μA when driven at 2.85 V with 4.2 V supply. |
| GND | Ground reference | Return path for power and signals; pin 10 is thermally enhanced exposed pad tied to system ground for improved thermal dissipation. |
| N.C. | No-connect terminals (pins 3, 7, 8, 9) | Internally unconnected; must be left floating or tied to GND per layout best practice; no electrical function or routing required. |
Key Features
| Feature | Design Value |
|---|---|
| T-switch architecture | Three-transistor per-channel design achieves >102 dB off-isolation while maintaining 0.44 Ω RON, eliminating need for external guard traces in high-precision signal routing. |
| RON flatness | 0.07 Ω variation over full analog range (0 V to V+) - Ensures linear gain response in audio volume control and sensor signal conditioning. |
| Charge injection | 192 pC (at 4.3 V) - Low enough to avoid visible glitches in DC-coupled video lines and prevent baseline shift in precision medical front-ends. |
| Low leakage | ±195 nA max NO OFF leakage (full temp range) - Prevents signal corruption in high-impedance pH or ECG electrode interfaces. |
| ESD robustness | >8 kV HBM rating - Survives repeated handling in automated SMT assembly and field-repair environments without screening. |
Applications
| Portable Audio Routing | Medical Sensor Multiplexing |
|---|---|
|
Use Scenario: Switching stereo headphone outputs between baseband processor and auxiliary codec in smartphones. IC Role / Device Role / Timing Role: Dual SPST analog switch routing left/right channels with matched RON to preserve stereo balance. Use Value: 0.44 Ω RON and 0.04 Ω matching minimize crosstalk-induced imaging artifacts; 102 dB off-isolation prevents audible pop/click during hot-swap. |
Use Scenario: Multiplexing ECG, SpO₂, and temperature sensor signals into a single ADC channel in wearable monitors. IC Role / Device Role / Timing Role: Low-leakage (±195 nA), low-charge-injection (192 pC) analog switch enabling accurate DC-coupled biopotential acquisition. Use Value: Sub-μA supply current extends battery life; 0.07 Ω RON flatness maintains signal fidelity across ±2.5 V physiological ranges. |
| Video Signal Selection | Battery-Powered Test Equipment |
|
Use Scenario: Selecting between HDMI and DisplayPort video sources in portable docking stations. IC Role / Device Role / Timing Role: High-bandwidth (27 MHz -3 dB) SPST switch handling sync and data lanes with minimal group delay distortion. Use Value: 40 ns tON/35 ns tOFF enables glitch-free source switching; 50 Ω system compatibility ensures impedance-matched video routing. |
Use Scenario: Configuring input attenuation and signal path gain in handheld multimeters and oscilloscope probes. IC Role / Device Role / Timing Role: Ultra-low RON analog switch used as precision bypass element for noisy amplifier stages. Use Value: 0.44 Ω RON reduces thermal noise contribution; T-switch architecture isolates measurement circuitry from digital control noise. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL54050IRUZ-T | Direct replacement per Intersil documentation; identical pinout, same μTQFN-10 package, 0.42 Ω RON at 4.3 V, 103 dB off-isolation. | Optimized for newer designs requiring marginally lower RON and improved THD (0.008% vs 0.01%). | Select ISL54050IRUZ-T for new designs; ISL54047IRUZ-T remains viable for legacy BOM continuity and cost-sensitive production. |
| TMUX1574RTER | 4-channel SPDT, 0.5 Ω RON, 100 dB off-isolation, 1.08 mm × 1.4 mm WQFN-10 package; requires logic inversion for NO behavior. | Supports more complex routing topologies but lacks T-switch architecture; higher charge injection (300 pC). | Choose TMUX1574RTER only if multi-channel flexibility outweighs ISL54047IRUZ-T's superior off-isolation and lower distortion. |
Compared with ISL54050IRUZ-T, the ISL54047IRUZ-T offers proven field reliability and identical layout compatibility, while TMUX1574RTER trades off isolation and linearity for channel count-making ISL54047IRUZ-T optimal for high-fidelity dual-path applications where signal integrity is critical.
Availability
ISL54047IRUZ-T is available at Aetrix Electronics and suitable for portable audio routing, medical sensor multiplexing, and battery-powered test equipment requiring stable component supply across extended product lifecycles.
Supply support for ISL54047IRUZ-T 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 semiconductor designer known for high-performance power management, precision analog, and interface ICs.
The ISL54047IRUZ-T belongs to Intersil's ultra-low-RON analog switch family, engineered specifically for space-constrained, battery-operated systems demanding minimal signal degradation and maximum off-state rejection.
FAQ
What is the maximum analog signal voltage range supported by the ISL54047IRUZ-T?
The ISL54047IRUZ-T supports a full rail-to-rail analog signal range from 0 V to V+, where V+ is the applied positive supply voltage (1.65 V to 4.5 V). This allows seamless interfacing with op-amps, ADCs, and DACs operating within the same supply domain without clamping or level-shifting circuitry. At V+ = 4.3 V, the analog path handles signals from 0 V to 4.3 V continuously.
Does the ISL54047IRUZ-T require external protection components for ESD robustness?
While the ISL54047IRUZ-T has >8 kV HBM ESD rating, 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 limits substrate current without affecting normal operation due to the device's sub-μA supply current. No external diodes are needed on signal pins unless overvoltage beyond V+ or GND is expected.
Can the ISL54047IRUZ-T operate reliably at 1.8 V supply voltage?
Yes-the ISL54047IRUZ-T is fully specified down to +1.65 V. At V+ = 1.8 V, typical RON is 0.98 Ω, tON/tOFF are 70 ns/65 ns, and logic thresholds adjust to VINH ≥ 1.0 V and VINL ≤ 0.4 V. Performance remains functional for low-power sensor interfaces, though RON increases and switching speed decreases versus 4.3 V operation.
How does the T-switch architecture improve off-isolation in the ISL54047IRUZ-T?
The T-switch architecture uses three transistors per channel-two in series on the signal path and one shunting the midpoint to ground-creating a high-impedance barrier when OFF. This configuration achieves 102 dB off-isolation at 100 kHz (into 50 Ω), significantly exceeding standard single-FET switches. The result is superior noise rejection between adjacent channels in dense PCB layouts.
Is the ISL54047IRUZ-T pin-compatible with the ISL54050IRUZ-T?
Yes-Intersil explicitly documents the ISL54050IRUZ-T as the recommended replacement for the ISL54047IRUZ-T, with identical 10-lead μTQFN package, pinout, and footprint (L10.1.8x1.4A). Both parts share the same V+, GND, IN, COM1, COM2, NO1, NO2, and N.C. terminal assignments, enabling drop-in replacement without PCB modification.
ISL54047IRUZ-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Switch Circuit:
- SPST - NO
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 450mOhm (Typ)
- Channel-to-Channel Matching (ΔRon):
- 40mOhm
- Voltage - Supply, Single (V+):
- 1.65V ~ 4.5V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 40ns, 35ns
- -3db Bandwidth:
- -
- Charge Injection:
- 192pC
- Channel Capacitance (CS(off), CD(off)):
- 46pF
- Current - Leakage (IS(off)) (Max):
- 100nA
- Crosstalk:
- -96dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-UTQFN (1.8x1.4)
ISL54047IRUZ-T FAQ
1.How can I place an order for ISL54047IRUZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL54047IRUZ-T 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 ISL54047IRUZ-T reliable?
The price and inventory of ISL54047IRUZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL54047IRUZ-T is usually 5 days.
3.What payment methods are accepted for ISL54047IRUZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL54047IRUZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL54047IRUZ-T?
ISL54047IRUZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL54047IRUZ-T 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 ISL54047IRUZ-T?
For technical support, including ISL54047IRUZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL54047IRUZ-T requirements.
6.How does Aetrix verify that ISL54047IRUZ-T is sourced from the original manufacturer or authorized distributors?
All ISL54047IRUZ-T 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 ISL54047IRUZ-T meets industry standards.
7.What is the process for return or replacement of ISL54047IRUZ-T?
All ISL54047IRUZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL54047IRUZ-T, 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 ISL54047IRUZ-T part is unused and in its original packaging.
Return procedure for ISL54047IRUZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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