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Renesas ISL5120IB
- Part No.:
- ISL5120IB
- Manufacturer:
- Renesas
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ISL5120IB.pdf
- Description:
- IC SWITCH SPST-NOX2 20OHM 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,188
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Product details
Overview
ISL5120IB 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, enabling precision signal routing in space-constrained portable systems such as cellular handsets and medical ultrasound front-ends.
For engineers reviewing the ISL5120IB datasheet, ISL5120IB pinout, ISL5120IB application, or ISL5120IB equivalent, key selection criteria include its dual NO topology, SOT-23-8 package compatibility, guaranteed break-before-make absence (distinguishing it from ISL5122/ISL5123), and verified performance across 3.3V/5V/12V rails in battery-powered analog multiplexing.
Technical Context
The ISL5120IB integrates two independent bidirectional CMOS analog switches controlled by TTL/CMOS-compatible digital inputs. Its internal level-shifter architecture ensures reliable switching across the full +2.7V to +12V supply range without requiring bipolar supplies or external biasing.
Each channel features matched ON-resistance (≤1Ω matching), low charge injection (5pC max), and high off-isolation (>76dB at 1MHz), making it suitable for precision sample-and-hold circuits and high-frequency analog multiplexing where signal integrity and channel-to-channel crosstalk (<–105dB) are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | +2.7V to +12V single supply - enables direct integration into 3.3V and 5V embedded systems without level translation. |
| ON Resistance (rON) | 19Ω at 5V - ensures minimal signal attenuation and distortion in audio, sensor, and DAC/ADC interface paths. |
| rON Matching | ≤1Ω between channels - supports matched gain switching and differential signal routing without imbalance-induced errors. |
| Switching Speed | tON = 28ns, tOFF = 20ns at 5V - allows reliable operation in >10MHz analog multiplexing and fast-settling data acquisition systems. |
| Leakage Current | 10nA max at 25°C - preserves accuracy in high-impedance sensor interfaces and integrator reset circuits. |
| Charge Injection | 5pC max - minimizes voltage glitch on sampled nodes, critical for precision ADC input conditioning. |
| Off Isolation | >76dB at 1MHz - suppresses feedthrough in multi-channel signal routing, e.g., ultrasound beamforming front-ends. |
Pinout & Package
ISL5120IB is housed in an 8-lead Pb-free SOT-23 package (JEDEC MO-178AA, pkg drawing P8.064), optimized for high-density portable PCB layouts. Thermal resistance θJA is 215°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN1) | Digital control input for Switch 1 | Accepts TTL/CMOS logic; drives internal level shifter to control NO1 path state. |
| 2 (NO1) | Normally open analog terminal, Channel 1 | Connects to COM1 only when IN1 = HIGH; isolated otherwise - used for signal enable/gating. |
| 3 (COM1) | Analog common node, Channel 1 | Shared I/O path for Channel 1; must be connected to signal source or load in SPST configuration. |
| 4 (GND) | Ground reference | Return path for supply and logic; must be low-impedance to minimize noise coupling into analog paths. |
| 5 (V+) | Positive power supply | Single rail powering both analog switches and digital interface; sets analog signal range (0V to V+). |
| 6 (COM2) | Analog common node, Channel 2 | Independent of COM1; enables dual-channel signal routing without shared impedance. |
| 7 (NO2) | Normally open analog terminal, Channel 2 | Functionally identical to NO1; supports parallel or independent switching of two analog signals. |
| 8 (IN2) | Digital control input for Switch 2 | Independent logic control; allows asynchronous switching of Channel 2 relative to Channel 1. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent NO switches | Enables simultaneous or staggered routing of two analog signals without cross-talk or shared control logic. |
| Guaranteed 5µW power consumption | Extends battery life in handheld devices; eliminates thermal derating concerns in compact enclosures. |
| 2000V HBM ESD protection | Meets MIL-STD-883 Method 3015.7 - reduces field failure risk during assembly and end-user handling. |
| Specified at 3.3V, 5V, and 12V | Eliminates need for design revalidation when migrating between common industrial and consumer supply rails. |
| RoHS-compliant SOT-23 packaging | Supports lead-free reflow (per TB493); footprint compatible with automated pick-and-place and AOI inspection. |
Applications
| Cellular Handset Signal Expansion | Portable Ultrasound Front-End |
|---|---|
Use Scenario: Expanding limited ASIC analog I/O in smartphones to support additional sensors or RF calibration paths. IC Role / Device Role / Timing Role: Dual SPST analog switch providing mux-in capability for auxiliary analog signals without redesigning baseband IC. Use Value: Reduces ASIC design risk and time-to-market while maintaining low rON and fast switching for RF test signal routing. | Use Scenario: Routing multiple transducer channel outputs to a shared ADC in handheld ultrasound probes. IC Role / Device Role / Timing Role: Precision analog switch managing high-frequency echo signals with minimal distortion and inter-channel leakage. Use Value: Delivers >76dB off-isolation and <–105dB crosstalk to preserve image resolution and dynamic range. |
| Audio Input Multiplexing | Operational Amplifier Gain Switching |
Use Scenario: Selecting between microphone, line-in, or headset inputs in Bluetooth headsets and voice assistants. IC Role / Device Role / Timing Role: Low-noise, low-charge-injection analog switch enabling glitch-free audio path selection. Use Value: 5pC max charge injection prevents audible pop/click artifacts; 19Ω rON avoids gain error in preamp stages. | Use Scenario: Dynamically configuring feedback networks to adjust op-amp gain in programmable sensor signal conditioners. IC Role / Device Role / Timing Role: Precision SPST switch inserting/removing resistors in amplifier feedback loops. Use Value: ≤1Ω rON matching ensures consistent gain accuracy across channels; 10nA leakage prevents DC offset drift. |
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 die, identical electrical specs, SOT-23-8 package, –40°C to +85°C rating, tape-and-reel packaging. | No functional difference; intended for volume production vs. evaluation use. | Select ISL5120IHZ-T for production builds requiring standard reel delivery and full industrial temperature compliance. |
| TMUX1574RTER | 4-channel SPST, 0.5Ω typical rON, 1.8V–5.5V supply, higher integration but no 12V support. | Better rON and lower voltage operation, but lacks 12V capability and dual-channel independence of ISL5120IB. | Choose TMUX1574RTER only for 3.3V/5V systems needing ultra-low rON and four switches; not drop-in for 12V or dual-NO-specific designs. |
Compared with ISL5120IHZ-T, ISL5120IB offers identical switching performance and pinout but differs in packaging format and reel specification; compared with TMUX1574RTER, ISL5120IB provides superior 12V operation and simpler dual-channel control, at the cost of higher rON and no 1.8V support.
Availability
ISL5120IB is available at Aetrix Electronics and suitable for cellular handset design, portable medical instrumentation, and industrial sensor interface applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for ISL5120IB 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 semiconductor manufacturer specializing in precision analog and power management ICs, now part of Renesas Electronics.
The ISL5120IB belongs to Intersil's low-voltage analog switch product line, engineered for battery-powered portable equipment where low power, small footprint, and rail-to-rail analog signal handling are essential.
FAQ
What is the maximum supply voltage rating for the ISL5120IB?
The ISL5120IB has an absolute maximum supply voltage of 15V, with recommended operation from +2.7V to +12V. At 12V, it achieves 11Ω typical ON-resistance and 25ns/17ns tON/tOFF. Exceeding 12V risks violating the 10% tolerance margin for standard 12V rails and may degrade long-term reliability. Always observe the 15V absolute maximum limit per the Absolute Maximum Ratings table on page 4 of the FN6022 datasheet.
Does the ISL5120IB support break-before-make switching?
No, the ISL5120IB does not guarantee break-before-make operation. That feature is explicitly reserved for ISL5122 and ISL5123 variants per the datasheet truth table and Feature Summary on page 1. The ISL5120IB implements two independent normally open switches with no timing coordination between channels - making it unsuitable for SPDT replacement where contact overlap must be avoided. Use ISL5122IBZ-T if break-before-make is required.
Can the ISL5120IB operate from a 3.3V supply, and what performance changes occur?
Yes, the ISL5120IB is fully specified at 3.3V. At 3.3V, rON increases to 32Ω (vs. 19Ω at 5V), tON/tOFF slow to 40ns/20ns, and charge injection remains ≤5pC. These shifts are documented in Table 1 and the Electrical Specifications section for 3.3V supply on page 5. System designers must verify signal integrity and settling time margins when using 3.3V operation, especially in high-precision or high-speed applications.
What is the thermal resistance (θJA) of the ISL5120IB in its SOT-23-8 package?
The ISL5120IB in the 8-lead SOT-23 package has a typical junction-to-ambient thermal resistance (θJA) of 215°C/W, as stated in the Thermal Information table on page 4 of FN6022. This value assumes mounting on a low effective thermal conductivity test board in free air. For production PCBs, actual θJA will improve with copper pour, thermal vias, and airflow - but worst-case thermal design should start from 215°C/W to ensure junction temperature stays below 150°C under maximum load.
Is the ISL5120IB pin-compatible with older Intersil analog switches like ISL84541?
Yes, the ISL5120IB is a pin-compatible, improved-performance replacement for ISL84541, ISL84542, ISL84543, and ISL84544, as confirmed in the Features section on page 1 of FN6022. It retains identical SOT-23-8 pinout and logic interface while delivering lower rON, faster switching, and enhanced ESD protection. No PCB layout change is required when upgrading from ISL84541 to ISL5120IB, provided the temperature range (–40°C to +85°C) and supply voltage requirements align.
ISL5120IB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Packaging:
- Bag
- 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ISL5120IB FAQ
1.How can I place an order for ISL5120IB through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL5120IB 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 ISL5120IB reliable?
The price and inventory of ISL5120IB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL5120IB is usually 5 days.
3.What payment methods are accepted for ISL5120IB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL5120IB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL5120IB?
ISL5120IB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL5120IB 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 ISL5120IB?
For technical support, including ISL5120IB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL5120IB requirements.
6.How does Aetrix verify that ISL5120IB is sourced from the original manufacturer or authorized distributors?
All ISL5120IB 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 ISL5120IB meets industry standards.
7.What is the process for return or replacement of ISL5120IB?
All ISL5120IB units undergo pre-shipment inspection (PSI). If there is an issue with ISL5120IB, 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 ISL5120IB part is unused and in its original packaging.
Return procedure for ISL5120IB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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