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Analog Devices Inc./Maxim Integrated MAX4751EGE
- Part No.:
- MAX4751EGE
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-VFQFN Exposed Pad
- Datasheet:
-
MAX4751EGE.pdf
- Description:
- IC SW SPST-NOX4 900MOHM 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:12,471
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Product details
Overview
MAX4751EGE from Maxim Integrated is a quad, single-pole/single-throw (SPST), normally open analog switch IC operating from a single +1.6V to +3.6V supply. It delivers 0.9Ω max on-resistance at +3V, 30ns turn-on time, and rail-to-rail analog signal handling up to V+, enabling precise low-voltage signal routing in battery-powered audio and data-acquisition systems.
For engineers reviewing the MAX4751EGE datasheet, MAX4751EGE pinout, MAX4751EGE application, or MAX4751EGE equivalent, this device is selected for high-speed, low-RON, low-quiescent-power switching where four independent NO paths are required in space-constrained 3mm × 3mm QFN layouts.
Technical Context
The MAX4751EGE implements CMOS-based transmission-gate architecture with matched P- and N-channel MOSFETs per channel, ensuring symmetrical conduction and bidirectional signal flow. Its logic inputs accept 1.8V CMOS-compatible thresholds when V+ = +3V, and internal level-shifting allows IN_ pins to tolerate up to +3.6V regardless of supply voltage.
Each of the four SPST switches features guaranteed RON matching ≤0.12Ω and flatness ≤0.1Ω over the full 0–V+ analog range at +3V, supporting precision instrumentation-grade signal integrity. Break-before-make timing is not implemented - only the MAX4753 variant includes that feature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (RON) | 0.9Ω max at V+ = +3V, enabling ≤100mA continuous current per channel with <10mV drop at 10mA. |
| On-Resistance Matching | 0.12Ω max between channels at +3V, ensuring consistent gain/attenuation across multiplexed signal paths. |
| Turn-On / Turn-Off Time | tON = 30ns, tOFF = 25ns (RL = 50Ω, CL = 35pF), supporting >10MHz digital control of analog signals. |
| Analog Signal Range | Rail-to-rail: 0V to V+, preserving full dynamic range of baseband audio and sensor outputs without clipping. |
| Supply Voltage Range | +1.6V to +3.6V single supply, compatible with Li-ion, Li-poly, and dual-cell alkaline battery systems. |
| Quiescent Supply Current | <1µA at V+ = +3.6V, minimizing standby power in always-on portable devices. |
| Logic Input Compatibility | 1.8V CMOS-compatible at +3V supply; IN_ tolerates 0V to +3.6V, simplifying interface with mixed-voltage controllers. |
Pinout & Package
MAX4751EGE is housed in a 16-pin, 3mm × 3mm, 0.8mm-thick thin QFN package with exposed thermal pad (pin 16 = GND). Pin 1 is marked by a dot; terminals follow JEDEC MO-220 standard numbering (counterclockwise from top-left corner).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7, 11, 15 | NO1, NO2, NO3, NO4 | Normally open switch terminals - connect only when corresponding INx = HIGH; no DC path to COM when OFF. |
| 2, 8, 9, 16 | COM1, COM2, COM3, COM4 | Common analog I/O nodes - bidirectional; serve as input or output depending on signal flow direction. |
| 4, 5, 12, 13 | IN1, IN2, IN3, IN4 | Digital control inputs - TTL/CMOS-compatible; drive respective NOx switches ON/OFF independently. |
| 6 | GND | Ground reference for analog and digital domains; connects to exposed thermal pad for thermal and noise performance. |
| 14 | V+ | Positive supply input - must be decoupled with 0.1µF ceramic capacitor placed ≤2mm from pin to minimize switching noise. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog operation | Supports full 0V to V+ signal swing without distortion or clipping - critical for audio line-level and sensor front-end routing. |
| Low on-resistance flatness | 0.1Ω max variation across entire analog range at +3V - ensures linear gain response in variable-gain amplifier or filter-switching applications. |
| Ultra-low quiescent power | <1µW typical supply consumption - extends battery life in always-on IoT sensors and wearables. |
| High channel-to-channel matching | 0.12Ω max RON mismatch between any two channels - enables accurate differential signal switching and calibration path selection. |
| Bidirectional signal handling | NO/COM terminals interchangeable as source or sink - eliminates need for signal-direction awareness in PCB layout and firmware. |
Applications
| Audio Signal Routing | Portable Data Acquisition |
|---|---|
|
Use Scenario: Selecting between multiple microphone inputs or headphone outputs in a Bluetooth headset or voice assistant endpoint. IC Role / Device Role / Timing Role: Quad SPST analog switch providing independent, low-distortion path selection under microcontroller GPIO control. Use Value: 0.9Ω RON and 0.031% THD preserve SNR >95dB; 30ns switching avoids audible click/pop during real-time reconfiguration. |
Use Scenario: Multiplexing sensor outputs (thermistor, accelerometer, ambient light) into a shared ADC channel in a compact environmental monitor. IC Role / Device Role / Timing Role: Low-leakage (<5nA off-state), rail-to-rail analog switch enabling accurate DC-coupled measurements without offset drift. Use Value: 0.12Ω RON matching minimizes channel-to-channel gain error; 1µA supply current supports multi-year battery operation. |
| Power Path Management | Communications Interface Switching |
|
Use Scenario: Isolating backup battery from main system rail during charging or fault conditions in medical wearable devices. IC Role / Device Role / Timing Role: Four independent NO switches configured as redundant or sequenced power enable paths. Use Value: 100mA continuous current rating and <10mV IR drop at 10mA ensure stable voltage delivery; fast 30ns turn-on enables rapid failover. |
Use Scenario: Reconfiguring UART, I²C, or SPI lines between different peripherals (e.g., modem ↔ MCU ↔ sensor hub) in modular industrial gateways. IC Role / Device Role / Timing Role: Low-capacitance (31pF NO-off, 75pF COM-on) analog switch minimizing signal rise-time degradation on high-speed serial buses. Use Value: -80dB crosstalk and -65dB off-isolation prevent coupling between active and inactive communication channels at 1MHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad SPST analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4751EUD | Same electrical specs, but in 14-pin TSSOP (5.0mm × 4.4mm); no exposed thermal pad; higher 727mW power dissipation limit at +70°C. | Preferred for through-hole prototyping or legacy board designs with TSSOP footprints; less suitable for thermally dense or ultra-compact layouts. | Select MAX4751EUD if board space allows larger package and thermal management is less constrained. |
| TMUX1574RTER | TI part: 0.5Ω max RON at 3.3V, but requires ≥1.8V supply; 35ns tON; 16-QFN same footprint; ±100mA rating identical. | Better RON for precision current-sense routing; slightly slower switching; pinout differs - not drop-in compatible. | Choose TMUX1574RTER only after verifying layout revision for pin mapping changes and validating 0.5Ω benefit justifies redesign effort. |
Compared with MAX4751EGE, the MAX4751EUD offers identical functionality in a larger, easier-to-solder package, while the TMUX1574RTER provides lower RON at the cost of non-interchangeable pinout and revised timing behavior - neither is pin-compatible, requiring PCB modification.
Availability
MAX4751EGE is available at Aetrix Electronics and suitable for battery-powered systems, audio signal routing, and low-voltage data-acquisition systems requiring stable component supply and long-term production continuity.
Supply support for MAX4751EGE 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 U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and consumer applications.
The MAX4751/MAX4752/MAX4753 family was designed specifically for ultra-low-voltage, low-RON, quad analog switching in space- and power-constrained portable electronics - emphasizing rail-to-rail fidelity, sub-1µA quiescence, and robust 100mA channel capability.
FAQ
What is the maximum continuous current rating per channel for MAX4751EGE?
The MAX4751EGE supports 100mA continuous current per channel (COM/NO) across the full operating temperature range (-40°C to +85°C), verified per Absolute Maximum Ratings and Electrical Characteristics tables. This rating applies under worst-case conditions including V+ = +3.6V and ambient temperature up to +85°C, with proper PCB thermal design using the exposed pad.
Does MAX4751EGE support rail-to-rail analog signal switching?
Yes, MAX4751EGE supports true rail-to-rail analog signal switching - signals from 0V to V+ pass with minimal distortion or on-resistance variation. The datasheet specifies analog signal range as 0 to V+ and confirms ≤0.1Ω RON flatness across that full range at +3V supply, making it suitable for audio, sensor, and precision DC applications.
Is MAX4751EGE pin-compatible with MAX4752EGE or MAX4753EGE?
No, MAX4751EGE is not pin-compatible with MAX4752EGE or MAX4753EGE. While all three share the same 16-pin QFN package outline and pin count, their terminal functions differ: MAX4751EGE uses pins 1/7/11/15 as NOx, whereas MAX4752EGE assigns those same pins as NCx, and MAX4753EGE splits them between NOx and NCx. Board-level substitution requires schematic and layout revision.
What is the logic voltage compatibility of MAX4751EGE's INx inputs?
MAX4751EGE's INx inputs are 1.8V CMOS-compatible when V+ = +3V (VIH = 1.4V min, VIL = 0.5V max), and tolerate voltages from 0V to +3.6V regardless of supply - allowing direct interfacing with 1.8V, 3.3V, or 5V logic without level shifters. Input leakage remains ≤±1µA across temperature.
Can MAX4751EGE be used in bidirectional signal paths?
Yes, MAX4751EGE supports fully bidirectional analog signal flow: NO and COM terminals are functionally interchangeable as source or load. This is inherent to its CMOS transmission-gate topology and confirmed by the "Analog Signal Levels" section, which states "the switches are bidirectional, so the NO_, NC_, and COM_ pins can be used as either inputs or outputs."
MAX4751EGE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Switch Circuit:
- SPST - NO
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 4
- On-State Resistance (Max):
- 900mOhm
- Channel-to-Channel Matching (ΔRon):
- 30mOhm
- Voltage - Supply, Single (V+):
- 1.6V ~ 3.6V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 30ns, 25ns
- -3db Bandwidth:
- -
- Charge Injection:
- 21pC
- Channel Capacitance (CS(off), CD(off)):
- 31pF, 30pF
- Current - Leakage (IS(off)) (Max):
- 2.5nA
- Crosstalk:
- -70dB @ 10MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QFN (3x3)
MAX4751EGE FAQ
1.How can I place an order for MAX4751EGE through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4751EGE 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 MAX4751EGE reliable?
The price and inventory of MAX4751EGE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4751EGE is usually 5 days.
3.What payment methods are accepted for MAX4751EGE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4751EGE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4751EGE?
MAX4751EGE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4751EGE 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 MAX4751EGE?
For technical support, including MAX4751EGE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4751EGE requirements.
6.How does Aetrix verify that MAX4751EGE is sourced from the original manufacturer or authorized distributors?
All MAX4751EGE 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 MAX4751EGE meets industry standards.
7.What is the process for return or replacement of MAX4751EGE?
All MAX4751EGE units undergo pre-shipment inspection (PSI). If there is an issue with MAX4751EGE, 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 MAX4751EGE part is unused and in its original packaging.
Return procedure for MAX4751EGE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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