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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:2,462
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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 systems.
For engineers reviewing the MAX4732EUA datasheet, MAX4732EUA pinout, MAX4732EUA application, or MAX4732EUA equivalent, this device is selected for battery-powered analog multiplexing where low quiescent power (0.5nW typ), tight RON matching, and high off-isolation (–72dB at 1MHz) are critical design requirements.
Technical Context
The MAX4732EUA implements two independent NC SPST switches using CMOS process technology, with TTL/CMOS-compatible digital inputs and bidirectional analog paths. Its internal architecture ensures guaranteed RON flatness (9Ω max at +3V) and minimal charge injection (7.5pC), preserving signal integrity across the full 0V to V+ analog range.
It operates without external biasing, supports single-supply configurations down to +2V, and maintains stable performance over –40°C to +85°C. The µMAX package enables compact PCB layouts while sustaining thermal derating of 4.5mW/°C above +70°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.0V to +11V - Enables direct integration into 3.3V, 5V, and higher-voltage battery-backed systems without level-shifting. |
| On-Resistance (RON) | 50Ω max at +3V - Ensures minimal signal attenuation and voltage drop in low-level analog paths. |
| RON Matching | 3.5Ω max at +3V - Guarantees matched gain/attenuation between dual channels for differential or parallel signal paths. |
| Leakage Current | <0.1nA at +25°C - Preserves accuracy in high-impedance sensor interfaces and sample-and-hold circuits. |
| Off-Isolation | –72dB at 1MHz - Suppresses crosstalk between inactive and active signal paths in multi-channel routing. |
| Turn-On/Off Time | 170ns / 70ns max at +3V - Supports medium-speed multiplexing in data acquisition and AFE front-ends. |
| Charge Injection | 7.5pC - Limits voltage glitch on sampled nodes, critical for precision ADC input conditioning. |
Pinout & Package
The MAX4732EUA is housed in an 8-pin µMAX® package (3.0mm × 3.0mm, 0.8mm height) with exposed pad for thermal enhancement. Pin 1 is V+, pin 2 is IN1, pin 3 is COM2, pin 4 is NC2, pin 5 is GND, pin 6 is IN2, pin 7 is COM1, and pin 8 is NC1.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| V+ (Pin 1) | Positive supply input | Accepts +2V to +11V; must be bypassed with ≥0.1µF capacitor near the pin for stability at high supply voltages. |
| IN1 (Pin 2) | Digital control input for Switch 1 | Logic-low activates NC1 path (connects COM1 to NC1); TTL/CMOS compatible when V+ = +5V. |
| COM2 (Pin 3) | Common terminal for Switch 2 | Bidirectional analog node; connects to NC2 when IN2 = logic-low, open when IN2 = logic-high. |
| NC2 (Pin 4) | Normally closed terminal for Switch 2 | Internally connected to COM2 at power-up; breaks connection when IN2 driven high. |
| GND (Pin 5) | Digital/analog ground reference | Must be tied to system ground; serves as return path for supply current and logic thresholds. |
| IN2 (Pin 6) | Digital control input for Switch 2 | Independent control of second NC switch; no inter-channel timing dependency with IN1. |
| COM1 (Pin 7) | Common terminal for Switch 1 | Analog I/O shared between NC1 and COM1; supports rail-to-rail signal swing (0V to V+). |
| NC1 (Pin 8) | Normally closed terminal for Switch 1 | Default-connected to COM1; disconnects only when IN1 is asserted high. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent power | 0.5nW typical - Eliminates standby current concerns in coin-cell–powered devices. |
| Rail-to-rail analog handling | Full 0V to V+ signal range - Enables seamless interfacing with op-amps, ADCs, and DACs without clamping. |
| Guaranteed RON flatness | 9Ω max over signal range at +3V - Maintains consistent gain/attenuation across varying input amplitudes. |
| High-frequency performance | 300MHz on-channel bandwidth - Supports video, RF sampling, and fast-switching test equipment applications. |
| Low crosstalk | –108dB at 1MHz - Prevents signal bleed between adjacent switched paths in dense analog routing. |
Applications
| Portable Medical Sensors | Audio Signal Routing |
|---|---|
Use Scenario: Multiplexing ECG electrode inputs into a single ADC channel in handheld patient monitors. IC Role / Device Role / Timing Role: Dual NC switch isolates unused electrodes while maintaining low-noise, high-Z paths for active sensing. Use Value: 0.1nA leakage prevents DC offset drift; 50Ω RON ensures minimal gain error across all channels. | Use Scenario: Selecting between microphone and line-in sources in Bluetooth headsets. IC Role / Device Role / Timing Role: Low-RON, low-charge-injection analog switch routing audio signals without pop/click artifacts. Use Value: 7.5pC charge injection minimizes audible transients; –108dB crosstalk preserves stereo separation. |
| Low-Voltage Data Acquisition | Cell Phone Peripheral Switching |
Use Scenario: Channel selection in 12-bit SAR ADC front-ends powered from 3.3V Li-ion batteries. IC Role / Device Role / Timing Role: Precision SPST switch enabling sequential sampling of multiple sensors with matched RON. Use Value: 3.5Ω RON matching reduces differential nonlinearity; rail-to-rail support captures full ADC input range. | Use Scenario: Routing touch-screen controller signals and proximity sensor outputs in space-constrained smartphone modules. IC Role / Device Role / Timing Role: Compact µMAX-packaged NC switch managing analog I/O sharing between co-located sensors. Use Value: 3.0mm × 3.0mm footprint saves board area; 0.5nW quiescent power extends standby time. |
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 electrical specs; 8-pin TDFN-EP package with exposed thermal pad (3mm × 3mm, 0.8mm height). | Better thermal performance at high ambient temperatures; requires different land pattern and reflow profile. | Select MAX4732ETA for thermally demanding industrial environments where µMAX thermal resistance is insufficient. |
| ADG722BRMZ | 5V-only supply (±5V dual or +5V single); 4.5Ω RON max at +5V; –85dB off-isolation; 10-pin MSOP package. | Higher supply constraint limits use in wide-input-voltage battery systems; superior isolation for sensitive RF mixing. | Choose ADG722BRMZ when operating strictly at +5V and requiring enhanced off-state rejection in communication receivers. |
Compared with MAX4732ETA and ADG722BRMZ, the MAX4732EUA offers the broadest supply range (+2V to +11V) in the smallest standard package, making it optimal for portable designs needing flexible voltage operation and minimal board area-without compromising leakage, matching, or dynamic performance.
Availability
The MAX4732EUA 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 and long production lifecycles.
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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and consumer applications.
The MAX4732EUA belongs to Maxim's precision analog switch product line, engineered for ultra-low-power, rail-to-rail signal routing in portable and space-constrained electronic 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. Exceeding +11V risks reliability degradation; operation at +11V requires a minimum 0.1µF bypass capacitor placed close to the V+ pin per the datasheet's high-voltage operating considerations.
Does the MAX4732EUA support rail-to-rail analog signal switching?
Yes, the MAX4732EUA supports true rail-to-rail analog signal handling from 0V to V+ across both NC1–COM1 and NC2–COM2 paths. This capability is confirmed in the Electrical Characteristics table and Typical Operating Characteristics plots, enabling direct interface with op-amps and ADCs without signal clipping or level-shifting.
What is the logic behavior of the MAX4732EUA's control inputs?
The MAX4732EUA uses active-low logic: when IN1 or IN2 is at logic-low (≤0.8V), the corresponding NC switch closes (COMx connected to NCx); when driven high (≥2.0V at +5V supply, or rail-to-rail at other supplies), the switch opens. This behavior is explicitly defined in the Truth Tables and Pin Description sections of the datasheet.
Can the MAX4732EUA be used in a +3.3V system with standard 3.3V logic levels?
Yes-the MAX4732EUA accepts rail-to-rail logic inputs, so driving IN1 and IN2 from a +3.3V system (0V for logic-low, +3.3V for logic-high) is fully supported and minimizes power consumption. Its VIH and VIL thresholds scale with V+, ensuring reliable switching without external level translators.
Is the MAX4732EUA pin-compatible with the MAX4731EUA or MAX4733EUA?
No-the MAX4732EUA is not pin-compatible with MAX4731EUA (dual NO) or MAX4733EUA (one NO + one NC) in the µMAX package. Although all three share identical pin counts and physical layout, their pin functions differ: MAX4732EUA assigns pins 4 and 8 to NC2 and NC1, whereas MAX4731EUA uses those pins for NO2 and NO1, and MAX4733EUA splits them between NO1 and NC2. PCB redesign is required for substitution.
MAX4732EUA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Bulk
- 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-µMAX
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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