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Renesas ISL5122IH-T
- Part No.:
- ISL5122IH-T
- Manufacturer:
- Renesas
- Package:
- SOT-23-8
- Datasheet:
-
ISL5122IH-T.pdf
- Description:
- IC SW SPST-NO/NCX2 20OHM SOT23-8
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
ISL5122IH-T from Intersil is a low-voltage, single-supply, dual SPST analog switch configured as one normally open (NO) and one normally closed (NC) channel-functioning as a break-before-make SPDT switch. It operates from +2.7V to +12V, delivers 19Ω ON-resistance at 5V, 28ns tON/20ns tOFF switching, and guarantees break-before-make timing (≤10ns). It is used in cellular phone ASIC signal routing to extend analog I/O capability without redesign.
For engineers reviewing the ISL5122IH-T datasheet, ISL5122IH-T pinout, ISL5122IH-T application, or ISL5122IH-T equivalent, key selection criteria include guaranteed break-before-make operation, sub-20ns switching at 5V, <10nA leakage across temperature, SOT-23-6 package compatibility with space-constrained portable designs, and TTL/CMOS logic interface robustness.
Technical Context
The ISL5122IH-T integrates two independent CMOS transmission gates-one NO and one NC-driven by complementary level-shifted control logic that ensures break-before-make behavior. Its internal architecture uses matched P- and N-channel MOSFETs per switch path, enabling bidirectional analog signal flow with flat rON vs. voltage and minimal charge injection (≤5pC).
It features rail-to-rail analog signal handling (0V to V+), ESD protection (>2kV HBM), and logic-level thresholds fixed at VINL ≤0.8V and VINH ≥2.4V across 3.3V–12V supply range. No bipolar supply support; operation requires V+ and GND only.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | +2.7V to +12V single supply - enables direct integration into 3.3V, 5V, and 12V battery-powered systems without level-shifting. |
| rON (5V) | 19Ω typical - ensures minimal signal attenuation and distortion in audio, sensor, and DAC/ADC signal paths. |
| tON / tOFF | 28ns / 20ns at 5V - supports high-speed multiplexing up to ~15MHz without significant edge degradation. |
| Break-before-make delay | 3ns to 10ns (full temp range) - prevents momentary short-circuit between NO and NC paths during state transition. |
| Leakage (ICOM(OFF)) | ±5nA max over –40°C to +85°C - preserves accuracy in precision sample-and-hold and integrator reset circuits. |
| Charge Injection | ≤5pC - limits voltage glitch on high-impedance nodes (e.g., capacitor-coupled op-amp inputs). |
| Off Isolation | 76dB at 1MHz - suppresses crosstalk between active and inactive channels in multi-signal routing. |
Pinout & Package
ISL5122IH-T is housed in a RoHS-compliant 6-lead SOT-23 package (JEDEC MO-178AA, pkg drawing P6.064), measuring 2.8mm × 2.9mm × 1.3mm. This ultra-compact footprint supports high-density PCB layouts in handheld and portable equipment.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Digital control input | Accepts TTL/CMOS logic; drives internal level shifter to control both switches synchronously. |
| 2 (V+) | Positive power supply | Single supply rail (2.7–12V); powers analog switches and digital interface; sets analog signal ceiling. |
| 3 (GND) | Ground reference | Return path for supply and logic; defines analog signal floor (0V); must be low-impedance for noise immunity. |
| 4 (NO) | Normally open analog terminal | Connects to COM only when IN = HIGH; used for primary signal path activation in SPDT configuration. |
| 5 (NC) | Normally closed analog terminal | Connects to COM when IN = LOW; provides default signal path; disconnects before NO connects (break-before-make). |
| 6 (COM) | Common analog node | Shared I/O port; bidirectionally routes signal between NO and NC based on IN state; supports rail-to-rail analog swing. |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed break-before-make | Ensures no overlap between NO and NC conduction, eliminating signal shorting in critical analog routing (e.g., sensor muxing). |
| rON matching ≤1Ω | Minimizes gain error and channel-to-channel mismatch in differential or dual-path signal conditioning circuits. |
| Low charge injection (≤5pC) | Reduces settling error in capacitor-based circuits such as sample-and-hold amplifiers and integrator resets. |
| 2000V HBM ESD rating | Enables robust handling in manufacturing and field environments without external protection components. |
| 6-lead SOT-23 package | Reduces board area by >50% vs. 8-lead SOIC; compatible with standard pick-and-place and reflow processes. |
Applications
| Cellular Phone Signal Routing | Portable Medical Instrumentation |
|---|---|
Use Scenario: Extending limited ASIC analog I/O in smartphones to support additional sensors or audio codecs without ASIC respin. IC Role / Device Role / Timing Role: Dual SPDT analog switch providing dynamic signal path selection between baseband processor and peripheral analog functions. Use Value: Enables "mux-in" of extra functionality while maintaining low power (<5µW) and fast switching (28ns) to preserve real-time responsiveness. | Use Scenario: Selecting between ECG electrode inputs and calibration references in handheld electrocardiograph devices. IC Role / Device Role / Timing Role: Precision SPDT switch routing biopotential signals with guaranteed break-before-make to avoid patient safety hazards. Use Value: Delivers <5nA leakage and 76dB off-isolation to maintain diagnostic signal integrity and meet IEC 60601-1 leakage current requirements. |
| Audio Signal Multiplexing | Industrial Data Acquisition Front-End |
Use Scenario: Switching between microphone inputs and line-level sources in Bluetooth headsets or smart speakers. IC Role / Device Role / Timing Role: Low-distortion analog switch with 19Ω rON and flat frequency response up to 300MHz for full-audio-band fidelity. Use Value: Maintains THD+N < –90dB across 20Hz–20kHz due to low rON flatness (≤7Ω variation) and minimal charge injection. | Use Scenario: Channel selection in 12-bit SAR ADC front-ends for programmable logic controllers and sensor hubs. IC Role / Device Role / Timing Role: High-speed, low-leakage SPDT switch isolating individual sensor outputs before ADC sampling. Use Value: Enables 100kSPS multiplexed acquisition with <0.01% gain error thanks to rON matching ≤1Ω and <10nA leakage at +85°C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual SPDT analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4677EUT+T | Single 5V-only supply; 35Ω rON at 5V; no break-before-make guarantee; 6-lead SOT-23 package. | Limited to 5V systems; higher rON increases insertion loss in precision signal chains. | Select when cost sensitivity outweighs need for wide supply range or guaranteed break-before-make. |
| TMUX6219DSGR | 12V max supply; 3.5Ω rON at 5V; break-before-make specified; 6-lead WSON package (2.0×2.0mm). | Lower rON improves SNR but WSON requires tighter layout control; higher ESD rating (4kV HBM). | Select for ultra-low rON and enhanced ESD robustness where board space allows WSON rework. |
Compared with MAX4677EUT+T and TMUX6219DSGR, the ISL5122IH-T uniquely balances wide supply flexibility (2.7–12V), guaranteed break-before-make timing, and industry-standard SOT-23-6 compatibility-making it optimal for legacy-compatible, multi-rail portable designs requiring reliability over raw performance.
Availability
ISL5122IH-T is available at Aetrix Electronics and suitable for cellular handset design, portable medical instrumentation, industrial data acquisition, and audio signal routing requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ISL5122IH-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 designer of precision analog and power management ICs, known for high-performance switches, regulators, and interface solutions targeting industrial, computing, and communications markets.
The ISL5122IH-T belongs to Intersil's low-voltage analog switch family, engineered specifically for battery-powered portable equipment where ultra-low power, small footprint, and rail-to-rail signal handling are essential design constraints.
FAQ
What is the guaranteed break-before-make time for ISL5122IH-T?
The ISL5122IH-T guarantees a break-before-make time delay (tD) of 3ns minimum to 10ns maximum across the full operating temperature range (–40°C to +85°C) under specified test conditions (RL = 300Ω, CL = 35pF, VNO/VNC = 10V at 12V supply). This parameter is explicitly characterized and tested for ISL5122 and ISL5123 variants per the FN6022 datasheet, ensuring safe signal path isolation during switching transitions.
Does ISL5122IH-T support 3.3V logic inputs when powered from a 12V supply?
Yes, ISL5122IH-T accepts TTL/CMOS-compatible logic inputs across its entire supply range: VINL ≤ 0.8V and VINH ≥ 4.0V (at V+ = 12V) are guaranteed. The device includes internal level shifters that translate 3.3V or 5V logic signals to full-rail gate drive voltages, enabling interoperability with mixed-voltage microcontrollers without external translators.
What is the maximum analog signal voltage range supported by ISL5122IH-T?
The ISL5122IH-T supports analog signal voltages from 0V to V+ (rail-to-rail), with absolute maximum ratings allowing signals from –0.3V to (V+ + 0.3V). For example, at V+ = 5V, the usable analog range is 0V to 5V; at V+ = 12V, it extends to 0V to 12V. Signals exceeding these bounds forward-bias internal ESD diodes, so clamping or series resistance may be required for overvoltage protection.
Can ISL5122IH-T be used in audio applications requiring low THD?
Yes, ISL5122IH-T is suitable for audio signal routing due to its low 19Ω rON (at 5V), flat rON vs. voltage (≤7Ω variation), and low charge injection (≤5pC), all contributing to < –90dB THD+N in typical 20Hz–20kHz paths. Its 76dB off-isolation and –105dB crosstalk further suppress inter-channel interference in stereo or multi-input audio systems.
Is ISL5122IH-T pin-compatible with other members of the ISL512x family?
No-ISL5122IH-T uses a 6-lead SOT-23 package, while ISL5120/5121/5122 in SOIC or 8-lead SOT-23 variants have different pin counts and assignments. Only ISL5123IHZ-T shares the same 6-lead SOT-23 footprint, but differs functionally (committed SPDT vs. configurable NO/NC). Board layout must be verified per package drawing P6.064 for ISL5122IH-T.
ISL5122IH-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Switch Circuit:
- SPST - NO/NC
- 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:
- SOT-23-8
ISL5122IH-T FAQ
1.How can I place an order for ISL5122IH-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL5122IH-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 ISL5122IH-T reliable?
The price and inventory of ISL5122IH-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL5122IH-T is usually 5 days.
3.What payment methods are accepted for ISL5122IH-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL5122IH-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL5122IH-T?
ISL5122IH-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL5122IH-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 ISL5122IH-T?
For technical support, including ISL5122IH-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL5122IH-T requirements.
6.How does Aetrix verify that ISL5122IH-T is sourced from the original manufacturer or authorized distributors?
All ISL5122IH-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 ISL5122IH-T meets industry standards.
7.What is the process for return or replacement of ISL5122IH-T?
All ISL5122IH-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL5122IH-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 ISL5122IH-T part is unused and in its original packaging.
Return procedure for ISL5122IH-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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