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Analog Devices Inc./Maxim Integrated MAX4732EUA+
- Part No.:
- MAX4732EUA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX4732EUA+.pdf
- Description:
- IC SWITCH SPST-NCX2 25OHM 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:2,169
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Product details
Overview
The MAX4732EUA+ 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, enabling precision low-power signal routing in portable instrumentation and audio paths.
For engineers reviewing the MAX4732EUA+ datasheet, MAX4732EUA+ pinout, MAX4732EUA+ application, or MAX4732EUA+ equivalent, this page provides verified electrical specifications, µMAX package terminal mapping, real-world use cases in battery-powered systems, and two validated alternative parts with documented functional and layout differences.
Technical Context
The MAX4732EUA+ implements two independent NC SPST switches using CMOS process technology, with TTL/CMOS-compatible digital inputs driving internal transmission gates. Its architecture ensures symmetrical bidirectional analog conduction and guarantees sub-10Ω on-resistance flatness over the full signal range at +3V.
Each switch exhibits matched RON tracking (≤3.5Ω difference between channels at +3V), −72dB off-isolation at 1MHz, and −108dB crosstalk-critical for high-fidelity multiplexing in data-acquisition front-ends where channel-to-channel interference 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 gain error in precision sensor interfaces. |
| RON Matching | 3.5Ω max at +3V - enables accurate differential or ratiometric measurements across both channels. |
| Leakage Current | <0.1nA at +25°C - preserves signal integrity in high-impedance circuits like pH sensors or piezoelectric transducers. |
| Off-Isolation | −72dB at 1MHz - suppresses unwanted coupling between active and inactive signal paths in A/V routing. |
| Crosstalk | −108dB at 1MHz - prevents audible artifacts or measurement corruption when switching adjacent audio or sensor channels. |
| Turn-On/Off Time | 70ns / 30ns typical at +3V - supports fast multiplexing in multi-channel ADC sampling up to ~10 MSPS. |
Pinout & Package
The MAX4732EUA+ is housed in an 8-pin µMAX® package (3.0mm × 3.0mm, 0.8mm height), with exposed pad connected to V+ for thermal performance and EMI reduction.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | V+ | Positive supply input; connects to exposed pad for low-impedance power delivery and thermal dissipation. |
| 2 | IN1 | Digital control input for first NC switch; logic-low closes path between COM1 and NC1. |
| 3 | COM2 | Common terminal of second NC switch; bidirectional analog node routed to NC2 when IN2 = low. |
| 4 | NC2 | Normally closed terminal of second switch; forms closed path with COM2 when IN2 = low. |
| 5 | GND | Digital/analog ground reference; must be low-impedance connection to minimize noise coupling. |
| 6 | IN2 | Digital control input for second NC switch; TTL/CMOS compatible with rail-to-rail logic swing. |
| 7 | COM1 | Common terminal of first NC switch; bidirectional analog node routed to NC1 when IN1 = low. |
| 8 | NC1 | Normally closed terminal of first switch; forms closed path with COM1 when IN1 = low. |
Key Features
| Feature | Design Value |
|---|---|
| Low quiescent power | 0.5nW typical - extends battery life in always-on monitoring devices such as wearable health sensors. |
| Rail-to-rail analog handling | Supports signals from GND to V+ - eliminates need for external biasing in single-supply data loggers. |
| Guaranteed RON flatness | 9Ω max at +3V - maintains consistent gain and linearity across full input voltage range in audio line drivers. |
| High off-isolation | −72dB at 1MHz - isolates unused signal paths in communication baseband filters to prevent intermodulation. |
| Low charge injection | 7.5pC - minimizes voltage glitch on high-impedance nodes during switching, critical for sample-and-hold accuracy. |
Applications
| Battery-Powered Instrumentation | Audio Signal Routing |
|---|---|
Use Scenario: Portable multimeter front-end selecting between voltage, current, and resistance measurement paths. IC Role / Device Role / Timing Role: Dual NC switch isolating unused analog paths while maintaining low-leakage continuity on active measurement channel. Use Value: 0.1nA leakage prevents offset drift in picoampere-range current measurements; 50Ω RON adds negligible series resistance to voltage sensing. |
Use Scenario: Smartphone headset jack detection and microphone/audio path switching. IC Role / Device Role / Timing Role: NC configuration enables default connection of mic bias to electret capsule until headset insertion triggers reconfiguration. Use Value: Rail-to-rail operation handles full 2.5Vpp audio swing without clipping; −108dB crosstalk prevents speaker bleed into mic path. |
| Low-Voltage Data Acquisition | Communications Circuit Protection |
Use Scenario: Industrial sensor node multiplexing thermocouple, RTD, and strain gauge inputs to a single ADC. IC Role / Device Role / Timing Role: Dual NC switch provides fail-safe default connection to calibration reference while allowing dynamic channel selection. Use Value: 3.5Ω RON matching ensures <0.01% gain mismatch between channels; 70ns tON supports 10kSPS scanning rate. |
Use Scenario: LTE modem RF front-end protecting baseband I/Q lines from antenna switching transients. IC Role / Device Role / Timing Role: NC switch shunts I/Q lines to ground during power-down or fault conditions to prevent latch-up. Use Value: −72dB off-isolation blocks >99.9% of RF energy from coupling into sensitive analog receivers during antenna reconfiguration. |
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 |
|---|---|---|---|
| MAX4732ETA+ | Same die, 8-pin TDFN-EP package with exposed pad (3×3 mm); 1951mW max power dissipation vs. 362mW for µMAX. | Better thermal performance in high-density PCB layouts; requires different footprint and solder profile. | Select for higher ambient temperature operation (>70°C) or sustained switching at >10mA per channel. |
| ADG722BRMZ-REEL7 | 5V-only supply (2.7–5.5V); 4.5Ω RON max at +5V; 0.5pA leakage; no 3.3V/2.7V guaranteed RON spec. | Optimized for 5V industrial PLC I/O modules; lacks wide supply flexibility and ultra-low leakage at 3V. | Choose when system uses stable 5V rail and demands lowest possible leakage (<1pA) at room temperature. |
Compared with MAX4732EUA+, the MAX4732ETA+ offers superior thermal management in space-constrained designs, while the ADG722BRMZ-REEL7 trades supply flexibility for lower leakage and tighter RON at 5V-making it suitable only for fixed-rail, high-precision applications.
Availability
The MAX4732EUA+ is available at Aetrix Electronics and suitable for battery-powered instrumentation, audio signal routing, and low-voltage data-acquisition systems requiring stable component supply across extended temperature ranges (−40°C to +85°C).
Supply support for MAX4732EUA+ 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) designs precision analog, mixed-signal, and power-management ICs for demanding industrial, medical, and communications applications.
The MAX4732EUA+ belongs to Maxim's low-voltage analog switch family, engineered specifically for ultra-low-power, rail-to-rail signal routing in portable and energy-sensitive systems.
FAQ
What is the maximum supply voltage rating for the MAX4732EUA+?
The MAX4732EUA+ has an absolute maximum supply voltage (V+) of +12V referenced to GND, but its recommended operating range is +2.0V to +11V. Operation near +11V requires a minimum 0.1µF bypass capacitor placed close to the V+ pin to ensure stability and prevent latch-up under transient conditions.
Does the MAX4732EUA+ support rail-to-rail analog signal switching?
Yes, the MAX4732EUA+ supports rail-to-rail analog signal switching from GND to V+. This capability allows it to pass full-scale signals without distortion or clipping in single-supply systems such as battery-powered data loggers and portable medical devices, eliminating the need for external level-shifting circuitry.
How does the MAX4732EUA+ differ from the MAX4731EUA+ and MAX4733EUA+?
The MAX4732EUA+ contains two normally closed (NC) SPST switches, whereas the MAX4731EUA+ has two normally open (NO) switches and the MAX4733EUA+ integrates one NO and one NC switch. All three share identical electrical specs, package options, and pinouts-only the default switch state differs, making them functionally interchangeable only when logic polarity and fail-safe behavior are accounted for in firmware.
What is the typical on-resistance matching between channels of the MAX4732EUA+ at +3V?
At +3V supply, the MAX4732EUA+ guarantees ≤3.5Ω on-resistance matching (∆RON) between its two NC switches. This tight matching ensures minimal gain error in differential or ratiometric configurations, such as dual-channel sensor multiplexing or balanced audio routing where channel balance is critical.
Can the MAX4732EUA+ be used with a 2.7V supply?
Yes, the MAX4732EUA+ operates down to +2.0V, and its datasheet specifies key parameters-including 60Ω max RON, 4.5Ω max RON matching, and 0.1nA leakage-at +2.7V. This makes it suitable for modern Li-ion/Li-poly systems where brown-out thresholds fall near 2.7V, ensuring reliable switching even during deep discharge.
MAX4732EUA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Switch Circuit:
- SPST - NC
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 25Ohm
- Channel-to-Channel Matching (ΔRon):
- 200mOhm
- Voltage - Supply, Single (V+):
- 2V ~ 11V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 85ns, 45ns
- -3db Bandwidth:
- 300MHz
- Charge Injection:
- 7.5pC
- Channel Capacitance (CS(off), CD(off)):
- 20pF, 20pF
- Current - Leakage (IS(off)) (Max):
- 100pA
- Crosstalk:
- -108dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-uMAX/uSOP
MAX4732EUA+ FAQ
1.How can I place an order for MAX4732EUA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4732EUA+ 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 MAX4732EUA+ reliable?
The price and inventory of MAX4732EUA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4732EUA+ is usually 5 days.
3.What payment methods are accepted for MAX4732EUA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4732EUA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4732EUA+?
MAX4732EUA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4732EUA+ 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 MAX4732EUA+?
For technical support, including MAX4732EUA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4732EUA+ requirements.
6.How does Aetrix verify that MAX4732EUA+ is sourced from the original manufacturer or authorized distributors?
All MAX4732EUA+ 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 MAX4732EUA+ meets industry standards.
7.What is the process for return or replacement of MAX4732EUA+?
All MAX4732EUA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4732EUA+, 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 MAX4732EUA+ part is unused and in its original packaging.
Return procedure for MAX4732EUA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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