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Analog Devices Inc./Maxim Integrated MAX4731EUA+T
- Part No.:
- MAX4731EUA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX4731EUA+T.pdf
- Description:
- IC SWITCH SPST-NOX2 25OHM 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:4,785
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Product details
Overview
The MAX4731EUA+T from Maxim Integrated is a dual, normally open (NO), single-pole/single-throw (SPST) analog switch IC operating from a single +2V to +11V supply. It delivers 50Ω max on-resistance at +3V, 3.5Ω max channel-to-channel RON matching, and <0.1nA leakage at +25°C-enabling precision signal routing in ultra-low-power battery-operated audio and data-acquisition systems.
For engineers reviewing the MAX4731EUA+T datasheet, MAX4731EUA+T pinout, MAX4731EUA+T application, or MAX4731EUA+T equivalent, this page provides verified package mapping (8-pin µMAX), confirmed dual-NO topology, rail-to-rail analog handling, TTL/CMOS logic compatibility, and real-world performance metrics including -108dB crosstalk and 300MHz bandwidth.
Technical Context
The MAX4731EUA+T implements two independent CMOS SPST switches with normally open configuration, controlled by separate digital inputs (IN1/IN2). Its architecture supports bidirectional analog signal flow across COM/NO terminals with guaranteed rail-to-rail voltage handling (GND to V+).
It features low-charge-injection (7.5pC) switching and break-before-make timing not applicable (only MAX4733 includes tBBM). Dynamic performance is characterized at 1MHz (–72dB off-isolation, –108dB crosstalk) and 300MHz (on-channel –3dB bandwidth), validated under +3V and +5V supply conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.0V to +11V - enables direct integration into 3.3V, 5V, and high-voltage industrial rails without level-shifting. |
| On-Resistance (RON) | 50Ω max at +3V - ensures minimal signal attenuation and distortion in low-voltage sensor and audio paths. |
| RON Matching | 3.5Ω max at +3V - guarantees matched gain/attenuation between channels for differential or dual-path applications. |
| Leakage Current | <0.1nA at +25°C - preserves battery life in always-on monitoring circuits and prevents DC offset drift. |
| Crosstalk | –108dB at 1MHz - isolates adjacent signal paths in multi-channel A/V routing or multiplexed data acquisition. |
| Bandwidth | 300MHz - supports high-fidelity analog video, RF sampling, and fast-switching instrumentation signals. |
| Logic Compatibility | TTL/CMOS - accepts standard 0V/+3.3V or 0V/+5V control inputs without external translators. |
Pinout & Package
MAX4731EUA+T uses an 8-pin µMAX® package (3.0mm × 3.0mm, 0.8mm height) with exposed pad (EP) connected to V+. Pin 1 = V+, Pin 2 = IN1, Pin 3 = COM2, Pin 4 = NO2, Pin 5 = GND, Pin 6 = IN2, Pin 7 = COM1, Pin 8 = NO1.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | V+ | Positive supply input - must be bypassed with ≥0.1µF capacitor near pin for stability at >+5V operation. |
| 2 | IN1 | Digital control for Switch 1 - active-high logic drives NO1 closed when high (rail-to-rail compatible). |
| 3 | COM2 | Common terminal for Switch 2 - bidirectional analog path; connects to NO2 when IN2 = high. |
| 4 | NO2 | Normally open terminal for Switch 2 - only conducts to COM2 when IN2 is asserted. |
| 5 | GND | Digital/analog ground reference - requires low-impedance connection to minimize noise coupling. |
| 6 | IN2 | Digital control for Switch 2 - independent of IN1; enables asynchronous dual-channel switching. |
| 7 | COM1 | Common terminal for Switch 1 - primary analog I/O node for first SPST path. |
| 8 | NO1 | Normally open terminal for Switch 1 - isolated from COM1 until IN1 is high. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal handling | Supports full GND-to-V+ signal swing without clipping or increased RON, critical for ±1.5V audio and unbuffered sensor outputs. |
| Ultra-low quiescent power | 0.5nW typical - reduces standby current to sub-nanoampere levels, extending coin-cell battery life beyond 10 years in sleep-mode systems. |
| Guaranteed RON flatness | 9Ω max over full signal range at +3V - maintains consistent gain/attenuation across 0–3V input, essential for precision ADC front-ends. |
| Low charge injection | 7.5pC - minimizes voltage glitches on high-impedance nodes (e.g., sample-and-hold capacitors), preserving measurement accuracy. |
| High off-isolation | –72dB at 1MHz - suppresses coupling between inactive channels in multi-source audio mixing or test equipment signal matrices. |
Applications
| Portable Medical Sensors | Smartphone Audio Routing |
|---|---|
Use Scenario: Multiplexing ECG, SpO₂, and temperature sensor outputs to a shared ADC in wearable health monitors. IC Role / Device Role / Timing Role: Dual-NO analog switch enabling sequential channel selection while maintaining isolation between biopotential inputs. Use Value: 0.1nA leakage prevents DC bias shift in high-impedance electrode interfaces; 50Ω RON ensures <0.1% gain error at 10kΩ source impedance. |
Use Scenario: Dynamically routing microphone, headset, and speaker signals between baseband processor and audio codec in compact mobile handsets. IC Role / Device Role / Timing Role: Low-capacitance (20pF off-state) SPST switch providing clean signal path reconfiguration during call mode transitions. Use Value: –108dB crosstalk eliminates audible bleed between mic and speaker paths; 300MHz bandwidth preserves wideband voice fidelity. |
| Industrial Data Acquisition | Test & Measurement Signal Switching |
Use Scenario: Scanning multiple thermocouple or RTD inputs into a precision 24-bit sigma-delta ADC in PLC analog input modules. IC Role / Device Role / Timing Role: Precision analog multiplexer with matched RON minimizing channel-to-channel gain mismatch in ratiometric measurements. Use Value: 3.5Ω RON matching limits gain error to <0.1% across channels; rail-to-rail support accommodates ±10V sensor excitation. |
Use Scenario: Configuring signal paths in automated test equipment (ATE) for calibration, stimulus routing, and DUT interface switching. IC Role / Device Role / Timing Role: High-bandwidth, low-leakage switch enabling repeatable, low-noise connections between instruments and device-under-test. Use Value: 300MHz bandwidth supports RF stimulus delivery; 0.5nW quiescent power reduces self-heating-induced drift during long-duration tests. |
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 |
|---|---|---|---|
| ADG702BRMZ-REEL7 | Single-supply +1.8V to +5.5V; 3.5Ω RON at +3V; 1.8pC charge injection; 8-lead MSOP package. | Better suited for sub-3V portable designs but lacks +11V operation and UCSP option. | Select when ultra-low voltage (1.8V) operation or lower charge injection is prioritized over high-voltage flexibility. |
| TS5A23157DCUR | Single-supply +1.65V to +5.5V; 0.9Ω RON at +3V; 300MHz bandwidth; 3.5pC charge injection; 8-pin VSSOP. | Lower RON and charge injection, but rated only to +5.5V and lacks guaranteed leakage spec below 1nA. | Prefer for high-precision, low-distortion audio paths where supply is capped at 5V and leakage tolerance >1nA is acceptable. |
Compared with ADG702BRMZ-REEL7 and TS5A23157DCUR, the MAX4731EUA+T uniquely supports +11V operation, guarantees <0.1nA leakage, and offers µMAX packaging for space-constrained industrial PCBs-making it optimal for wide-supply, ultra-low-leakage, and high-isolation applications.
Availability
MAX4731EUA+T is available at Aetrix Electronics and suitable for battery-powered systems, audio/video-signal routing, and low-voltage data-acquisition systems requiring stable component supply across extended temperature ranges (–40°C to +85°C).
Supply support for MAX4731EUA+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
Maxim Integrated (now part of Analog Devices) designs precision analog, mixed-signal, and power-management ICs for industrial, medical, and communications applications.
The MAX4731EUA+T belongs to Maxim's low-voltage analog switch product line, engineered specifically for ultra-low-power, high-isolation signal routing in portable and energy-sensitive systems.
FAQ
What is the maximum supply voltage rating for the MAX4731EUA+T?
The MAX4731EUA+T has an absolute maximum supply voltage (V+) of +12V, with recommended operational limit at +11V. Operation above +5.5V requires a minimum 0.1µF bypass capacitor placed close to the V+ pin to ensure stability and prevent oscillation, per Maxim's Application Information section.
Does the MAX4731EUA+T support rail-to-rail analog signal switching?
Yes, the MAX4731EUA+T supports true rail-to-rail analog signal handling from GND to V+. This is confirmed in the General Description and Electrical Characteristics tables, where analog signal range is specified as 0V to V+ across all tested supply voltages (+2.7V to +5.5V), with minimal RON variation over the full range.
What is the on-resistance matching specification for the MAX4731EUA+T at +3V?
At +3V supply, the MAX4731EUA+T guarantees ≤3.5Ω on-resistance matching (∆RON) between its two SPST switches, measured under V+ = +2.7V, ICOM = 5mA, and VNO = +1.5V conditions. This value is explicitly listed in the "On-Resistance Matching Between Channels" row of the +3V Electrical Characteristics table.
Is the MAX4731EUA+T pin-compatible with other variants in the MAX473x family?
No-the MAX4731EUA+T (dual NO) shares the same 8-pin µMAX pinout with MAX4732EUA (dual NC) and MAX4733EUA (one NO + one NC), but functional pin assignments differ: MAX4731 uses Pins 4 and 8 as NO terminals, while MAX4732 uses them as NC and MAX4733 splits them. Direct substitution requires logic and signal path validation.
What package type does the MAX4731EUA+T use, and what are its key mechanical dimensions?
The MAX4731EUA+T uses the 8-pin µMAX® package (package code UA), measuring 3.0mm × 3.0mm × 0.8mm with an exposed pad (EP) tied to V+. Dimensions and land pattern details are defined in Maxim's package drawing 21-0036, specifying 0.65mm lead pitch and 0.25mm min. solder mask clearance.
MAX4731EUA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Circuit:
- SPST - NO
- 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
MAX4731EUA+T FAQ
1.How can I place an order for MAX4731EUA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4731EUA+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 MAX4731EUA+T reliable?
The price and inventory of MAX4731EUA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4731EUA+T is usually 5 days.
3.What payment methods are accepted for MAX4731EUA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4731EUA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4731EUA+T?
MAX4731EUA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4731EUA+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 MAX4731EUA+T?
For technical support, including MAX4731EUA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4731EUA+T requirements.
6.How does Aetrix verify that MAX4731EUA+T is sourced from the original manufacturer or authorized distributors?
All MAX4731EUA+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 MAX4731EUA+T meets industry standards.
7.What is the process for return or replacement of MAX4731EUA+T?
All MAX4731EUA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4731EUA+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 MAX4731EUA+T part is unused and in its original packaging.
Return procedure for MAX4731EUA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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