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Analog Devices Inc./Maxim Integrated MAX4732EBL+
- Part No.:
- MAX4732EBL+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- -
- Datasheet:
-
MAX4732EBL+.pdf
- Description:
- IC INTEGRATED CIRCUIT
- Quantity:
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Inventory:1,203
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Product details
Overview
The MAX4732EBL+ from Maxim Integrated is a dual, normally closed (NC), single-pole/single-throw (SPST) analog switch IC operating from a single +2V to +11V supply and supporting rail-to-rail signal switching. It delivers 50Ω maximum on-resistance at +3V, 3.5Ω max channel matching, and 0.1nA leakage current at +25°C - enabling precision low-power signal routing in portable instrumentation and audio paths.
For engineers reviewing the MAX4732EBL+ datasheet, MAX4732EBL+ pinout, MAX4732EBL+ application, or MAX4732EBL+ equivalent, this device is selected for battery-powered systems requiring ultra-low quiescent power (<0.5nW typ), tight RON matching, and compact UCSP packaging with guaranteed performance across -40°C to +85°C.
Technical Context
The MAX4732EBL+ implements two independent NC SPST switches using CMOS process technology, with logic inputs compatible with TTL/CMOS levels across its full supply range. Each switch features bidirectional analog conduction and internal ESD protection diodes.
It guarantees <0.1nA off-leakage at +25°C, -72dB off-isolation at 1MHz, and -108dB crosstalk at 1MHz - critical for high-fidelity signal integrity in multiplexed data-acquisition and audio routing applications where channel interaction must be minimized.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.0V to +11V - supports direct integration into 3.3V, 5V, and higher-voltage portable systems without level-shifting. |
| On-Resistance (RON) | 50Ω max at +3V - ensures minimal signal attenuation and voltage drop in low-voltage sensor or audio signal paths. |
| RON Matching | 3.5Ω max at +3V - enables matched gain/attenuation in differential or dual-channel signal conditioning circuits. |
| Off-Leakage Current | ±0.1nA at +25°C - preserves accuracy in high-impedance sensor front-ends and battery-monitoring circuits. |
| Turn-On/Off Time | 170ns / 70ns max at +3V - suitable for moderate-speed multiplexing in data loggers and portable test equipment. |
| Off-Isolation | -72dB at 1MHz - suppresses unwanted coupling between active and inactive channels in AFEs. |
| Crosstalk | -108dB at 1MHz - prevents audible artifacts or measurement interference in stereo audio or dual ADC routing. |
Pinout & Package
The MAX4732EBL+ uses a 9-bump UCSP (Ultra Compact Silicon Package) measuring 1.52mm × 1.52mm with bottom-side bumps. This wafer-level chip-scale package minimizes PCB footprint and parasitic inductance for high-frequency analog routing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | NC1 | Normally closed analog terminal of Switch 1 - connects to COM1 when IN1 = logic low. |
| A2 | COM1 | Common analog node for Switch 1 - bidirectional I/O path shared between NC1 and internal switch element. |
| A3 | GND | Digital ground reference - must be connected to system ground plane for stable logic thresholds and noise immunity. |
| B1 | IN1 | Digital control input for Switch 1 - TTL/CMOS-compatible; drives switch state (NC closed/open) based on logic level. |
| B3 | IN2 | Digital control input for Switch 2 - independent of IN1; enables asynchronous control of dual channels. |
| C1 | V+ | Positive supply input - powers analog and digital sections; bypass with ≥0.1µF capacitor near pin for stability. |
| C2 | COM2 | Common analog node for Switch 2 - electrically isolated from COM1; supports independent signal routing. |
| C3 | NC2 | Normally closed analog terminal of Switch 2 - connects to COM2 when IN2 = logic low. |
Key Features
| Feature | Design Value |
|---|---|
| UCSP package size | 1.52mm × 1.52mm - reduces board area by >70% vs. 8-pin µMAX, ideal for space-constrained wearables and handhelds. |
| Rail-to-rail signal handling | 0V to V+ analog range - preserves full dynamic range of sensors, microphones, or DAC outputs without clipping. |
| Quiescent power consumption | 0.5nW typical - extends battery life in always-on monitoring nodes and IoT edge sensors. |
| Guaranteed leakage performance | <0.1nA at +25°C - maintains DC accuracy in high-impedance medical electrode interfaces and precision thermistor networks. |
| TTL/CMOS logic compatibility | VIH = +2.0V min, VIL = +0.8V max at +5V - eliminates need for external level shifters in mixed-voltage MCU systems. |
Applications
| Portable Audio Routing | Low-Power Sensor Multiplexing |
|---|---|
Use Scenario: Selecting between multiple microphone inputs or headphone outputs in Bluetooth earbuds or voice-controlled remotes. IC Role / Device Role: Dual NC SPST switch providing low-distortion, low-noise signal path selection with no DC bias requirement. Use Value: 50Ω RON and -108dB crosstalk prevent audible switching artifacts and inter-channel bleed in stereo audio streams. |
Use Scenario: Scanning thermistor, RTD, or pH electrode arrays in handheld diagnostic tools or environmental monitors. IC Role / Device Role: Precision analog multiplexer enabling sequential measurement of high-impedance sensors without loading error. Use Value: ±0.1nA leakage and rail-to-rail operation preserve microvolt-level sensor signals and eliminate offset drift in ratiometric measurements. |
| Battery Voltage Monitoring | Cell Phone Baseband Signal Switching |
Use Scenario: Isolating battery voltage sense lines during charging cycles or detecting battery removal in smart batteries. IC Role / Device Role: Normally closed switch that defaults to connection unless actively opened by host MCU during fault conditions. Use Value: Fail-safe NC configuration ensures continuous monitoring during MCU reset or firmware crash, improving safety compliance. |
Use Scenario: Routing audio codec signals between speaker, receiver, and headset in multi-mode mobile handsets. IC Role / Device Role: Low-RON, low-crosstalk analog switch managing simultaneous playback and recording paths. Use Value: 3.5Ω RON matching and -72dB off-isolation prevent echo, distortion, and talk-through in full-duplex voice calls. |
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 |
|---|---|---|---|
| MAX4732EUA+ | Same electrical specs but in 8-pin µMAX package (3.0mm × 3.0mm); higher thermal resistance (4.5mW/°C derating). | Preferred for prototyping or layouts with existing µMAX footprints; less suitable for ultra-compact designs. | Select when board space allows larger package and thermal management is less constrained. |
| ADG722BRMZ-REEL7 | 5V-only supply (2.7V–5.5V); 4.5Ω RON matching at +5V; -85dB off-isolation; SOIC-8 package. | Better RON flatness but lower isolation; requires separate 5V rail; not rated for 11V operation. | Choose for cost-sensitive industrial systems with fixed 5V supplies and less stringent crosstalk requirements. |
Compared with MAX4732EUA+ and ADG722BRMZ-REEL7, the MAX4732EBL+ offers the smallest footprint and widest supply range (+2V to +11V), making it uniquely suited for space-constrained, multi-rail portable electronics where leakage, matching, and isolation are critical.
Availability
The MAX4732EBL+ is available at Aetrix Electronics and suitable for battery-powered systems, portable audio routing, and low-power sensor multiplexing requiring stable component supply across industrial temperature ranges.
Supply support for MAX4732EBL+ 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
Maxim Integrated (now part of Analog Devices) is a semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, automotive, and communications markets.
The MAX4731/MAX4732/MAX4733 family was designed specifically for ultra-low-power, space-constrained analog signal routing in portable and battery-operated equipment - emphasizing leakage control, rail-to-rail operation, and miniature UCSP packaging.
FAQ
What is the maximum supply voltage rating for the MAX4732EBL+?
The MAX4732EBL+ has an absolute maximum supply voltage (V+) of +12V referenced to GND, with recommended operational limit at +11V. Exceeding +12V risks permanent damage. When operating near +11V, a minimum 0.1µF ceramic capacitor must be placed between V+ and GND as close to the MAX4732EBL+ package as possible to ensure stability and reduce noise coupling.
Does the MAX4732EBL+ support rail-to-rail analog signal switching?
Yes, the MAX4732EBL+ supports true rail-to-rail analog signal switching - meaning analog signals from 0V to V+ pass through the switch with minimal distortion or RON variation. This capability is confirmed across the full specified supply range (+2V to +11V) and is essential for preserving signal fidelity in sensor interfaces and audio paths where headroom is limited.
What is the logic polarity relationship between IN1/IN2 and the NC switches in the MAX4732EBL+?
In the MAX4732EBL+, the NC switches are active low: when IN1 or IN2 is logic low (≤0.8V), the corresponding NC1 or NC2 terminal is connected to its COM terminal; when the input is logic high (≥2.0V at +5V supply), the switch opens. This behavior is explicitly defined in the truth table and functional diagrams for the MAX4732 variant, and applies identically to the MAX4732EBL+ UCSP version.
Can the MAX4732EBL+ be used with a 1.8V logic interface?
No - the MAX4732EBL+ does not guarantee proper logic operation below +2.0V supply. Its input logic thresholds (VIH = +2.0V min, VIL = +0.8V max) are specified only for V+ ≥ +2.0V. Driving IN1/IN2 with 1.8V logic while powering V+ at ≥+2.0V may result in indeterminate switching due to insufficient VIH margin; rail-to-rail logic drive (0V to V+) is required for reliable operation across all supply voltages.
How is thermal management handled in the MAX4732EBL+ UCSP package?
The MAX4732EBL+ UCSP uses a 9-bump wafer-level package with no exposed pad; thermal dissipation relies on solder joint conduction to the PCB. Its power dissipation is extremely low (0.5nW typical), resulting in negligible self-heating. The package is rated for 379mW at +70°C with 4.7mW/°C derating above that temperature - sufficient for all normal operating conditions given its ultra-low quiescent power.
MAX4732EBL+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- *
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Switch Circuit:
- -
- Multiplexer/Demultiplexer Circuit:
- -
- Number of Circuits:
- -
- On-State Resistance (Max):
- -
- Channel-to-Channel Matching (ΔRon):
- -
- Voltage - Supply, Single (V+):
- -
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- -
- -3db Bandwidth:
- -
- Charge Injection:
- -
- Channel Capacitance (CS(off), CD(off)):
- -
- Current - Leakage (IS(off)) (Max):
- -
- Crosstalk:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MAX4732EBL+ FAQ
1.How can I place an order for MAX4732EBL+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4732EBL+ 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 MAX4732EBL+ reliable?
The price and inventory of MAX4732EBL+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4732EBL+ is usually 5 days.
3.What payment methods are accepted for MAX4732EBL+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4732EBL+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4732EBL+?
MAX4732EBL+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4732EBL+ 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 MAX4732EBL+?
For technical support, including MAX4732EBL+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4732EBL+ requirements.
6.How does Aetrix verify that MAX4732EBL+ is sourced from the original manufacturer or authorized distributors?
All MAX4732EBL+ 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 MAX4732EBL+ meets industry standards.
7.What is the process for return or replacement of MAX4732EBL+?
All MAX4732EBL+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4732EBL+, 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 MAX4732EBL+ part is unused and in its original packaging.
Return procedure for MAX4732EBL+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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