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Renesas ISL5120CBZ
- Part No.:
- ISL5120CBZ
- Manufacturer:
- Renesas
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ISL5120CBZ.pdf
- Description:
- IC SWITCH SPST-NOX2 20OHM 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,646
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Product details
Overview
ISL5120CBZ 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. It enables signal routing in space-constrained portable systems such as cellular handsets and medical ultrasound front-ends where low power and high channel matching are critical.
For engineers reviewing the ISL5120CBZ datasheet, ISL5120CBZ pinout, ISL5120CBZ application, or ISL5120CBZ equivalent, key selection criteria include its dual NO topology, SOT-23-8 package compatibility, guaranteed rON matching ≤1Ω, and break-before-make exclusion (unlike ISL5122/ISL5123), making it suitable for independent channel switching in ADC multiplexing and audio path selection.
Technical Context
The ISL5120CBZ implements CMOS-based bidirectional analog switches with integrated level shifters that translate TTL/CMOS logic inputs (0.8V/2.4V thresholds) into full-rail gate drive signals across its 2.7–12V supply range. Its internal architecture uses matched P- and N-channel transistor pairs per switch to minimize rON variation and charge injection.
It features no internal break-before-make logic-each of its two NO switches operates independently with no timing interlock. All analog pins (NO1, NO2, COM1, COM2) exhibit identical 8pF OFF capacitance and 21pF ON capacitance at 1MHz, supporting consistent high-frequency signal integrity up to 300MHz in 50Ω systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Type | Dual SPST, both normally open (NO) - enables independent signal routing without channel coupling |
| rON @ 5V | 19Ω typical - ensures minimal voltage drop and signal distortion in precision analog paths |
| rON Matching | ≤1Ω max - guarantees matched gain/attenuation in differential or dual-path circuits |
| tON/tOFF | 28ns / 20ns @ 5V - supports high-speed multiplexing in data acquisition and video switching |
| Leakage Current | 10nA max @ 25°C - preserves accuracy in high-impedance sensor interfaces and integrator reset networks |
| Charge Injection | 5pC max - minimizes voltage glitch on sampled nodes in sample-and-hold and ADC front-ends |
| Supply Range | +2.7V to +12V single supply - allows direct integration with 3.3V, 5V, and 12V system rails without level translation |
Pinout & Package
ISL5120CBZ is housed in an 8-lead SOT-23 package (RoHS-compliant, moisture sensitivity level 2), optimized for compact PCB layouts in portable electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1 | Digital control input for Switch 1 | Active-high logic: drives NO1–COM1 path ON when ≥2.4V (TTL/CMOS compatible) |
| IN2 | Digital control input for Switch 2 | Independent control of NO2–COM2; no timing dependency with IN1 |
| NO1, NO2 | Normally open analog terminals | Open-circuit when INx = 0V; connect to COMx only when corresponding INx = high |
| COM1, COM2 | Analog common terminals | Shared signal path endpoints; bidirectional conduction when respective switch is closed |
| V+ | Positive power supply | Supplies internal logic and switch transistors; sets analog signal range (0V to V+) |
| GND | Ground reference | Return path for supply and logic; defines lower bound of analog signal range |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent NO switches | Enables simultaneous or staggered routing of two analog signals without cross-talk or timing constraints |
| 19Ω rON @ 5V with ≤1Ω matching | Preserves signal fidelity in precision instrumentation and audio gain-switching networks |
| 5pC max charge injection | Reduces settling error in sample-and-hold circuits and high-resolution ADC drivers |
| 2.7–12V single-supply operation | Eliminates need for dual supplies or level shifters in mixed-voltage embedded systems |
| TTL/CMOS-compatible inputs | Direct interface with microcontrollers and FPGAs without external logic buffers |
Applications
| Cellular Handset Signal Expansion | Portable Medical Ultrasound Front-End |
|---|---|
Use Scenario: ASIC I/O pin shortage limits analog sensor and microphone connectivity in slim smartphone designs. IC Role / Device Role / Timing Role: Dual NO analog switch routes additional analog inputs (e.g., secondary mic, ambient light sensor) to shared ADC channels. Use Value: Enables "mux-in" functionality without ASIC redesign, leveraging 28ns switching to support burst-mode sampling. | Use Scenario: Battery-powered ultrasound probe requires low-power, high-bandwidth analog switching for beamforming channel selection. IC Role / Device Role / Timing Role: Routes echo return signals from multiple transducer elements to a common receive chain with minimal added noise. Use Value: 19Ω rON and 76dB off-isolation maintain SNR >70dB; 8pF OFF capacitance preserves >30MHz bandwidth. |
| Industrial Data Acquisition Multiplexer | Audio Path Selection in Wearables |
Use Scenario: Compact DAQ module must scan 8 thermocouple inputs using a single precision ADC with cold-junction compensation. IC Role / Device Role / Timing Role: Two ISL5120CBZ devices (four NO switches total) sequentially connect thermocouple pairs to the ADC input and reference path. Use Value: 10nA leakage prevents offset drift in high-impedance thermocouple circuits; rON flatness <8Ω ensures linear gain across input range. | Use Scenario: Wireless earbud selects between internal MEMS mic and external call mic while minimizing power and board area. IC Role / Device Role / Timing Role: Independently enables either mic path to the codec's analog input with zero cross-conduction. Use Value: 5µW quiescent power extends battery life; 20ns tOFF eliminates audible pop during fast mic switching. |
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 |
|---|---|---|---|
| ISL5120IHZ-T | Same electrical specs; SOT-23-8 package with bottom-side marking (I20Z); -40°C to +85°C temp range vs. 0°C to +70°C for ISL5120CBZ | Preferred for industrial or automotive-adjacent environments requiring extended temperature operation | Select ISL5120IHZ-T when operating beyond 70°C or requiring Pb-free annealed terminations per J-STD-020 |
| TMUX1101DRYR | Lower rON (0.5Ω typ @ 5V), but higher leakage (100nA), no guaranteed rON matching, and 3.6V absolute max supply | Suitable for low-voltage (<3.6V) precision muxing but not for 5V/12V mixed-rail or high-matching applications | Choose TMUX1101DRYR only for 3.3V-only systems prioritizing ultra-low rON over leakage or matching |
Compared with ISL5120IHZ-T, ISL5120CBZ offers identical switching performance but narrower temperature rating and SOIC packaging; versus TMUX1101DRYR, ISL5120CBZ provides superior leakage control, wider supply range, and guaranteed channel matching-critical for metrology-grade signal routing.
Availability
ISL5120CBZ is available at Aetrix Electronics and suitable for cellular handset design, portable medical instrumentation, industrial data acquisition, and wearable audio systems requiring stable component supply, long-term obsolescence management, and RoHS-compliant sourcing.
Supply support for ISL5120CBZ 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 U.S.-based semiconductor company specializing in precision analog and power management ICs, now part of Renesas Electronics since 2017.
The ISL5120CBZ belongs to Intersil's low-voltage analog switch family, engineered for battery-powered portables where minimal power, small footprint, and high channel fidelity are essential design constraints.
FAQ
What is the maximum supply voltage rating for ISL5120CBZ?
The ISL5120CBZ has an absolute maximum supply voltage of +15V, with recommended operation from +2.7V to +12V. Operation at 12V yields optimal performance: 11Ω rON, 25ns tON, and 17ns tOFF. Exceeding 12V does not improve specs and risks violating long-term reliability limits defined in the Absolute Maximum Ratings table of the FN6022 datasheet.
Does ISL5120CBZ support break-before-make switching?
No, ISL5120CBZ does not implement break-before-make logic. As a dual NO SPST device, each switch operates independently-IN1 controls NO1–COM1, and IN2 controls NO2–COM2-with no timing interlock. Break-before-make is only guaranteed for ISL5122 and ISL5123 variants, per the Truth Table and Feature Summary in the FN6022 datasheet.
Can ISL5120CBZ be used with 3.3V logic inputs while powered from a 5V supply?
Yes, ISL5120CBZ accepts TTL/CMOS logic inputs across its full supply range: VINL ≤0.8V and VINH ≥2.4V are valid at V+ = 5V. The internal level shifter ensures reliable switching regardless of whether the control signal originates from a 3.3V MCU or 5V FPGA, as confirmed in the Digital Input Characteristics section (page 5) of the FN6022 datasheet.
What is the thermal resistance (θJA) of ISL5120CBZ in its SOT-23-8 package?
The ISL5120CBZ in the 8-lead SOT-23 package has a typical junction-to-ambient thermal resistance (θJA) of 215°C/W, measured under standard JEDEC test conditions (low-thermal-conductivity board, free air). This value assumes no copper pour or thermal vias; adding 1-in² copper pad reduces θJA by ~30°C/W, per Intersil Tech Brief TB379 referenced in the datasheet.
Is ISL5120CBZ pin-compatible with older Intersil analog switches like ISL84541?
Yes, ISL5120CBZ is explicitly documented as a pin-compatible, improved-performance replacement for ISL84541 (dual NO SPST), ISL84542 (dual NC), ISL84543 (NO/NC), and ISL84544 (SPDT), as stated in the Features section of the FN6022 datasheet. Electrical improvements include lower rON, faster switching, and reduced charge injection-no PCB layout change is required for drop-in replacement.
ISL5120CBZ 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
ISL5120CBZ FAQ
1.How can I place an order for ISL5120CBZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL5120CBZ 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 ISL5120CBZ reliable?
The price and inventory of ISL5120CBZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL5120CBZ is usually 5 days.
3.What payment methods are accepted for ISL5120CBZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL5120CBZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL5120CBZ?
ISL5120CBZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL5120CBZ 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 ISL5120CBZ?
For technical support, including ISL5120CBZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL5120CBZ requirements.
6.How does Aetrix verify that ISL5120CBZ is sourced from the original manufacturer or authorized distributors?
All ISL5120CBZ 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 ISL5120CBZ meets industry standards.
7.What is the process for return or replacement of ISL5120CBZ?
All ISL5120CBZ units undergo pre-shipment inspection (PSI). If there is an issue with ISL5120CBZ, 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 ISL5120CBZ part is unused and in its original packaging.
Return procedure for ISL5120CBZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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