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Analog Devices Inc./Maxim Integrated MAX4751EGE+T
- Part No.:
- MAX4751EGE+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-VFQFN Exposed Pad
- Datasheet:
-
MAX4751EGE+T.pdf
- Description:
- IC SW SPST-NOX4 900MOHM 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,251
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Product details
Overview
MAX4751EGE+T from Maxim Integrated is a low-voltage, quad single-pole/single-throw (SPST) analog switch with 0.9Ω max on-resistance at +3V supply, 30ns turn-on time, and rail-to-rail signal handling capability. It features four normally open (NO) switches, operates from +1.6V to +3.6V single supply, and is packaged in a 3mm × 3mm 16-pin QFN-EP for space-constrained battery-powered audio routing and data-acquisition systems.
For engineers reviewing the MAX4751EGE+T datasheet, MAX4751EGE+T pinout, MAX4751EGE+T application, or MAX4751EGE+T equivalent, key selection criteria include verified on-resistance flatness (0.1Ω max), RON matching (0.12Ω max), 1.8V CMOS logic compatibility at +3V supply, and guaranteed 100mA continuous current per channel - all critical for low-distortion signal switching in portable instrumentation.
Technical Context
The MAX4751EGE+T uses CMOS architecture to support bidirectional analog signal routing across its four independent NO switches, with full rail-to-rail operation (GND to V+) and minimal on-resistance variation over voltage and temperature. Its digital control inputs tolerate up to +3.6V regardless of supply voltage, enabling direct interfacing with higher-voltage logic without level shifting.
Switching behavior follows standard SPST logic: INx = HIGH activates the corresponding NO path (COMx ↔ NOx), while INx = LOW disconnects it. No break-before-make timing is implemented - unlike the MAX4753 - making it suitable for non-overlapping signal path selection where simultaneous conduction must be avoided.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (RON) | 0.9Ω max at +3V supply - enables <10mV drop at 100mA, preserving signal integrity in precision analog paths. |
| On-Resistance Flatness | 0.1Ω max at +3V - ensures consistent gain/attenuation across full analog input range (0V to V+). |
| RON Matching (ΔRON) | 0.12Ω max at +3V - guarantees ≤0.12Ω difference between highest and lowest RON among four channels, critical for matched-path applications. |
| Turn-On / Turn-Off Time | tON = 30ns, tOFF = 25ns (RL = 50Ω, CL = 35pF) - supports >10MHz switching rates in high-speed multiplexing. |
| Supply Voltage Range | +1.6V to +3.6V single supply - compatible with Li-ion, Li-poly, and dual-cell alkaline battery systems without regulation. |
| Logic Compatibility | 1.8V CMOS-compatible inputs at +3V supply - interfaces directly with 1.8V microcontrollers and FPGAs without external translators. |
| Continuous Current Rating | ±100mA per channel - supports driving headphones, sensors, and ADC front-ends without external buffering. |
Pinout & Package
MAX4751EGE+T is housed in a 3mm × 3mm, 16-pin QFN-EP package with exposed pad (EP) requiring connection to GND for thermal and electrical performance. Pin 1 is located at the top-left corner adjacent to the marking "AAC".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7, 11, 15 | NO1, NO2, NO3, NO4 | Normally open switch terminals - conduct to COMx only when corresponding INx is HIGH. |
| 2, 8, 9, 16 | COM1, COM2, COM3, COM4 | Common analog I/O nodes - serve as bidirectional signal ports shared with NOx terminals. |
| 4, 5, 12, 13 | IN1, IN2, IN3, IN4 | Digital control inputs - TTL/CMOS-compatible; drive respective NOx switches ON/OFF. |
| 14 | V+ | Positive supply pin - accepts +1.6V to +3.6V; requires 0.1µF bypass capacitor to GND. |
| 6 | GND | Analog/digital ground reference - must be connected to system ground; EP also tied to GND. |
| 3, 10 | N.C. | No internal connection - left unconnected; not used for signal or power routing. |
Key Features
| Feature | Design Value |
|---|---|
| Low on-resistance flatness | 0.1Ω max variation across full 0V–V+ analog range ensures minimal THD (<0.031%) in audio paths. |
| High channel-to-channel RON match | 0.12Ω max mismatch enables precise gain-matched signal routing in differential or multi-channel sensor interfaces. |
| Rail-to-rail analog signal handling | Supports signals from GND to V+ without clipping - essential for unbuffered battery-supplied sensor outputs. |
| Ultra-low quiescent power | <1µW supply current at +3.6V - extends battery life in always-on monitoring circuits. |
| Fast, low-jitter switching | 30ns tON / 25ns tOFF with <21pC charge injection minimizes transient glitches in sampled-data systems. |
Applications
| Audio Signal Routing | Battery-Powered Data Acquisition |
|---|---|
|
Use Scenario: Selecting between multiple microphone inputs or headphone outputs in a portable voice recorder. IC Role / Device Role / Timing Role: Quad SPST analog switch providing isolated, low-distortion signal path selection under microcontroller control. Use Value: 0.9Ω RON and 0.031% THD preserve audio fidelity; 1.8V logic compatibility allows direct interface with low-power MCU GPIOs. |
Use Scenario: Multiplexing sensor outputs (thermistor, accelerometer, ambient light) into a single ADC channel in a wearable health monitor. IC Role / Device Role / Timing Role: Low-leakage (±5nA off-state), rail-to-rail analog switch enabling accurate DC-coupled sensor sampling. Use Value: 0.1Ω RON flatness ensures consistent gain across all channels; 100mA rating supports active sensor biasing without external drivers. |
| PCMCIA Card Interface | Cellular Phone Baseband Switching |
|
Use Scenario: Isolating legacy PCMCIA card I/O lines during hot insertion/removal to prevent bus contention. IC Role / Device Role / Timing Role: Quad SPST switch acting as configurable signal gate between host controller and card edge connector. Use Value: Fast 30ns switching enables real-time enable/disable; ±100mA rating handles card power sequencing transients. |
Use Scenario: Routing RF front-end calibration signals or antenna diversity paths in LTE/5G handset baseband subsystems. IC Role / Device Role / Timing Role: Low-capacitance (31pF NO_ off-capacitance), low-charge-injection analog switch for test signal injection. Use Value: 31pF COFF and −65dB off-isolation at 1MHz minimize crosstalk into sensitive RF receivers during calibration cycles. |
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+T | Same electrical specs, but in 14-pin TSSOP (5.0mm × 4.4mm) - 45% larger footprint than QFN. | Preferred for prototyping or manual assembly where QFN reflow is unavailable. | Select when board-level rework or hand-soldering is required; no change to schematic or logic interface. |
| TMUX1574RTER | 0.5Ω max RON at 3.3V, but requires ≥1.08V logic high threshold; 1.8V logic compatibility not guaranteed. | Better RON for high-current paths, but may require level-shifting for 1.8V MCU control. | Choose when lower on-resistance is prioritized and supply/logic voltage margins allow verification of VIH compliance. |
Compared with MAX4751EGE+T, the MAX4751EUD+T offers identical functionality in a larger, more serviceable package, while the TMUX1574RTER delivers lower RON but introduces logic-level compatibility risk in 1.8V-controlled systems - making MAX4751EGE+T optimal for compact, battery-operated designs demanding guaranteed 1.8V CMOS interoperability.
Availability
MAX4751EGE+T is available at Aetrix Electronics and suitable for battery-powered systems, portable audio devices, and low-voltage data-acquisition systems requiring stable component supply, RoHS-compliant packaging, and long-term production continuity.
Supply support for MAX4751EGE+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) 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 MAX4751EGE+T belongs to Maxim's low-voltage analog switch product line, designed specifically for energy-efficient signal routing in space- and power-constrained portable electronics operating from single-cell batteries.
FAQ
What is the maximum analog signal voltage range supported by the MAX4751EGE+T?
The MAX4751EGE+T supports rail-to-rail analog signals from GND to V+, with V+ operating from +1.6V to +3.6V. At +3V supply, it reliably passes signals from 0V to +3V without clipping or significant RON variation - confirmed by on-resistance flatness of 0.1Ω max across that range. This makes MAX4751EGE+T suitable for unbuffered sensor outputs and audio signals in battery-powered systems.
Does the MAX4751EGE+T support 1.8V logic inputs when powered from a +3V supply?
Yes, the MAX4751EGE+T features 1.8V CMOS-compatible digital inputs when operated from a +3V supply: VIH is specified at +1.4V min and VIL at +0.5V max, ensuring reliable recognition of 1.8V logic HIGH/LOW levels. This eliminates the need for level shifters when interfacing with 1.8V microcontrollers or FPGAs - a key design advantage confirmed in the Electrical Characteristics table.
What is the thermal requirement for the exposed pad (EP) on the MAX4751EGE+T QFN package?
The exposed pad (EP) on the MAX4751EGE+T QFN package must be soldered to a PCB thermal pad connected to GND. This provides both electrical grounding and thermal dissipation: the package's thermal resistance θJA is rated at 16.9°C/W above +70°C, enabling 1349mW continuous power dissipation at TA = +70°C. Failure to connect EP to GND degrades thermal performance and may violate absolute maximum ratings.
Can the MAX4751EGE+T be used in bidirectional signal paths?
Yes, the MAX4751EGE+T supports fully bidirectional analog signal flow: COMx, NOx, and NCx pins (where applicable) function identically as inputs or outputs. This is enabled by its CMOS architecture and rail-to-rail voltage handling - confirmed by the "Analog Signal Range" specification (0V to V+) and functional diagrams showing symmetric conduction. Bidirectionality is intrinsic to MAX4751EGE+T and requires no special configuration.
How does the MAX4751EGE+T compare to the MAX4753EGE+T in switching behavior?
The MAX4751EGE+T implements four normally open (NO) switches with standard make-before-break operation, while the MAX4753EGE+T integrates two NO and two NC switches with guaranteed break-before-make timing (tBBM = 2ns). Thus, MAX4751EGE+T is unsuitable for applications requiring guaranteed isolation during state transitions - such as power domain switching - where MAX4753EGE+T's tBBM specification provides deterministic dead-time.
MAX4751EGE+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:
- 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):
- 85ns, 45ns
- -3db Bandwidth:
- 250MHz
- Charge Injection:
- 9pC
- Channel Capacitance (CS(off), CD(off)):
- 20pF, 20pF
- Current - Leakage (IS(off)) (Max):
- 100pA
- Crosstalk:
- -84dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QFN (3x3)
MAX4751EGE+T FAQ
1.How can I place an order for MAX4751EGE+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4751EGE+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 MAX4751EGE+T reliable?
The price and inventory of MAX4751EGE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4751EGE+T is usually 5 days.
3.What payment methods are accepted for MAX4751EGE+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4751EGE+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4751EGE+T?
MAX4751EGE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4751EGE+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 MAX4751EGE+T?
For technical support, including MAX4751EGE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4751EGE+T requirements.
6.How does Aetrix verify that MAX4751EGE+T is sourced from the original manufacturer or authorized distributors?
All MAX4751EGE+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 MAX4751EGE+T meets industry standards.
7.What is the process for return or replacement of MAX4751EGE+T?
All MAX4751EGE+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4751EGE+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 MAX4751EGE+T part is unused and in its original packaging.
Return procedure for MAX4751EGE+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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