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Renesas ISL5120CB
- Part No.:
- ISL5120CB
- Manufacturer:
- Renesas
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ISL5120CB.pdf
- Description:
- IC SWITCH SPST-NOX2 20OHM 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,344
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Product details
Overview
ISL5120CB from Intersil is a low-voltage, single-supply, dual SPST analog switch with two normally open (NO) channels. It operates from +2.7V to +12V, delivers 19Ω ON-resistance at 5V, 28ns turn-on time, and 10nA max leakage current. Designed for space-constrained portable systems, it enables signal routing in battery-powered cellular handsets and audio/video multiplexing where ASIC pin count is limited.
For engineers reviewing the ISL5120CB datasheet, ISL5120CB pinout, ISL5120CB application, or ISL5120CB equivalent, this page provides verified electrical specs, SOT-23 package details, dual NO-switch functionality, break-before-make exclusion, and direct alternatives for low-power analog switching in 3.3V/5V/12V systems.
Technical Context
The ISL5120CB uses CMOS transmission-gate architecture with integrated level shifters to translate TTL/CMOS logic inputs (0.8V/2.4V thresholds) into full-rail analog switch control across its 2.7–12V supply range. Its dual NO configuration ensures both switches are open at logic low and closed at logic high, with no internal inter-channel break-before-make timing.
Each channel features matched rON (≤1Ω), low charge injection (5pC max), and high off-isolation (76dB at 1MHz). The device avoids bipolar supply operation and relies on V+ and GND only - all analog pins include ESD diodes clamped to these rails, requiring strict supply-first sequencing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Type | Dual SPST, both normally open (NO); no break-before-make |
| rON @ 5V | 19Ω typical - enables low-loss signal routing in precision ADC/DAC interfaces |
| tON/tOFF | 28ns / 20ns at 5V - supports high-speed multiplexing up to ~35MHz bandwidth |
| Leakage Current | 10nA max at 25°C - preserves accuracy in sample-and-hold and integrator reset circuits |
| Supply Range | +2.7V to +12V - compatible with Li-ion, 3.3V, 5V, and 12V industrial rails |
| Charge Injection | 5pC max - minimizes voltage glitch in precision switched-capacitor applications |
| Off Isolation | 76dB at 1MHz - suppresses crosstalk in multi-channel audio/video routing |
Pinout & Package
ISL5120CB is housed in an 8-lead SOT-23 package (Pb-free, RoHS compliant), with thermal resistance θJA = 215°C/W. Pin assignments follow standard dual NO topology with independent control inputs per channel.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Positive power supply rail | Single supply input; sets analog signal range (0V to V+) and logic threshold reference |
| GND | Ground reference | Return path for power and logic; substrate connection for internal CMOS switches |
| IN1 | Digital control input for Switch 1 | TTL/CMOS-compatible; drives NO1 channel ON when ≥2.4V (logic high) |
| IN2 | Digital control input for Switch 2 | Independent logic control; enables asynchronous routing of two analog signals |
| COM1 | Common terminal for Switch 1 | Analog I/O node; connects to NO1 when IN1 = high; bidirectional signal path |
| NO1 | Normally open terminal for Switch 1 | Open-circuit at logic low; closed to COM1 only when IN1 = high |
| COM2 | Common terminal for Switch 2 | Second independent analog path; electrically isolated from COM1 |
| NO2 | Normally open terminal for Switch 2 | Matches NO1 behavior; no shared conduction path with Switch 1 |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent NO switches | Enables simultaneous or staggered routing of two analog signals without interaction |
| 19Ω rON at 5V with ≤1Ω matching | Ensures gain consistency and minimal THD in dual-channel instrumentation front-ends |
| 5pC max charge injection | Reduces settling error in precision sample-and-hold stages using <1nF hold capacitors |
| 2.7–12V single-supply operation | Eliminates need for dual-rail supplies in portable medical or test equipment designs |
| 8-lead SOT-23 footprint | Occupies <2.5 mm² PCB area - ideal for ultra-compact handheld and wearable devices |
Applications
| Cellular Handset Signal Expansion | Portable Ultrasound Front-End |
|---|---|
Use Scenario: Expanding analog I/O capability in baseband ASICs with limited GPIO and analog input pins. IC Role / Device Role / Timing Role: Dual NO analog switch enabling "mux-in" of additional microphone, sensor, or audio codec paths without ASIC redesign. Use Value: Reduces ASIC design risk and time-to-market while maintaining low power (<5µW) and small board footprint. |
Use Scenario: Routing multiple transducer signals to a shared ADC in handheld ultrasound probes. IC Role / Device Role / Timing Role: High-bandwidth analog switch providing 28ns switching for real-time beamforming channel selection. Use Value: Delivers >76dB off-isolation at 1MHz to prevent cross-talk between adjacent transducer elements. |
| Audio/Video Multiplexer | +3V/+5V Data Acquisition System |
Use Scenario: Selecting between stereo audio sources or composite video inputs in portable media players. IC Role / Device Role / Timing Role: Bidirectional SPST switch handling line-level analog signals with minimal distortion. Use Value: 19Ω rON and <5pC charge injection preserve signal fidelity across 20Hz–20kHz audio band. |
Use Scenario: Channel selection in battery-powered data loggers interfacing with multiple sensors. IC Role / Device Role / Timing Role: Low-leakage (10nA max) analog switch isolating thermistor or RTD inputs during sampling. Use Value: Prevents measurement drift in high-impedance sensor bridges by minimizing parasitic current paths. |
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 |
|---|---|---|---|
| MAX4617EUT+T | Higher rON (45Ω @ 5V), slower tON (65ns), same SOT-23-8 package | Less suitable for high-frequency multiplexing; acceptable for DC/low-speed sensor routing | Select when cost sensitivity outweighs speed and on-resistance requirements |
| ADG702BRMZ-REEL7 | Lower leakage (100pA typ), but higher rON (3.5Ω @ 5V only with 5V supply; degrades at 3.3V), SOIC-8 only | Preferred for ultra-low-leakage applications (e.g., electrocardiograph front-end), but requires larger PCB area | Choose for medical-grade leakage performance where SOIC-8 layout is acceptable |
Compared with MAX4617EUT+T and ADG702BRMZ-REEL7, the ISL5120CB offers superior combination of speed (28ns), low rON (19Ω), and SOT-23-8 compactness - making it optimal for space-constrained, high-fidelity portable systems operating across 3.3V–12V rails.
Availability
ISL5120CB is available at Aetrix Electronics and suitable for cellular handset design, portable medical instrumentation, audio/video multiplexing, and battery-powered data acquisition systems requiring stable component supply and long-term obsolescence management.
Supply support for ISL5120CB 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 is a precision analog and power management semiconductor company, now part of Renesas Electronics, with expertise in high-performance analog switching, voltage regulation, and interface solutions.
The ISL5120CB belongs to Intersil's low-voltage analog switch family, engineered specifically for battery-powered portable equipment demanding low power, small footprint, and robust signal integrity across wide supply ranges.
FAQ
What is the maximum supply voltage rating for the ISL5120CB?
The ISL5120CB has an absolute maximum supply voltage of +15V, with recommended operation from +2.7V to +12V. At 12V, typical rON drops to 11Ω and switching times improve to 25ns/17ns. Operation above 12V is not advised due to increased stress on internal ESD diodes and potential reliability degradation over time. The ISL5120CB must never be operated with bipolar supplies.
Does the ISL5120CB support break-before-make switching?
No, the ISL5120CB does not implement break-before-make timing. As a dual normally open (NO) switch, both channels operate independently with no guaranteed dead-time between turn-off and turn-on of opposing paths. Break-before-make is only guaranteed in ISL5122 and ISL5123 variants. For applications requiring isolation during state transitions, external timing control or a different variant must be used.
What is the leakage current specification for the ISL5120CB at 85°C?
The ISL5120CB specifies a maximum COM ON leakage current of 10nA across the full temperature range (–40°C to +85°C). This value is 100% tested at high temperature and correlated at +25°C. At +85°C, actual leakage remains within this limit, ensuring reliable performance in extended-temperature portable and industrial environments without signal path corruption.
Can the ISL5120CB be used with a 3.3V logic controller driving IN1 and IN2?
Yes, the ISL5120CB is TTL/CMOS compatible with logic thresholds of VINL ≤ 0.8V and VINH ≥ 2.4V - fully satisfied by standard 3.3V logic outputs. Input current remains below ±1µA across temperature, minimizing loading on microcontroller GPIOs. No level-shifting circuitry is required, simplifying integration with ARM Cortex-M or similar low-voltage controllers.
Is the ISL5120CB pin-compatible with earlier Intersil analog switches like ISL84541?
Yes, the ISL5120CB is explicitly documented as a pin-compatible, improved replacement for ISL84541, ISL84542, ISL84543, and ISL84544. It retains identical 8-lead SOT-23 pinout and logic polarity while offering lower rON, faster switching, and enhanced ESD protection (2000V per MIL-STD-883 Method 3015.7). No PCB layout changes are needed for drop-in upgrade.
ISL5120CB 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):
- 20Ohm
- Channel-to-Channel Matching (ΔRon):
- 800mOhm
- Voltage - Supply, Single (V+):
- 2.7V ~ 12V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 35ns, 30ns
- -3db Bandwidth:
- -
- Charge Injection:
- 5pC
- Channel Capacitance (CS(off), CD(off)):
- 8pF, 8pF
- Current - Leakage (IS(off)) (Max):
- 100pA
- Crosstalk:
- -105dB @ 1MHz
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ISL5120CB FAQ
1.How can I place an order for ISL5120CB through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL5120CB 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 ISL5120CB reliable?
The price and inventory of ISL5120CB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL5120CB is usually 5 days.
3.What payment methods are accepted for ISL5120CB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL5120CB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL5120CB?
ISL5120CB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL5120CB 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 ISL5120CB?
For technical support, including ISL5120CB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL5120CB requirements.
6.How does Aetrix verify that ISL5120CB is sourced from the original manufacturer or authorized distributors?
All ISL5120CB 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 ISL5120CB meets industry standards.
7.What is the process for return or replacement of ISL5120CB?
All ISL5120CB units undergo pre-shipment inspection (PSI). If there is an issue with ISL5120CB, 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 ISL5120CB part is unused and in its original packaging.
Return procedure for ISL5120CB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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