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Analog Devices Inc./Maxim Integrated MAX4651EGE
- Part No.:
- MAX4651EGE
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-VQFN Exposed Pad
- Datasheet:
-
MAX4651EGE.pdf
- Description:
- IC SW SPSTX4 4OHM 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:7,956
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Product details
Overview
MAX4651EGE from Maxim Integrated is a quad, normally closed (NC), single-pole single-throw (SPST) CMOS analog switch optimized for low-voltage operation (1.8V to 5.5V). It delivers 4Ω max on-resistance at +5V, 0.2Ω max on-resistance matching between channels, and rail-to-rail analog signal handling - enabling precision signal routing in battery-powered audio systems and low-distortion data-acquisition front-ends.
For engineers reviewing the MAX4651EGE datasheet, MAX4651EGE pinout, MAX4651EGE application, or MAX4651EGE equivalent, key selection criteria include its NC configuration, 16-pin QFN (4×4 mm) package, sub-10ns switching times, -75dB off-isolation at 1MHz, and compatibility with TTL/CMOS logic levels across full supply range.
Technical Context
The MAX4651EGE implements four independent SPST switches with normally closed topology, each featuring matched CMOS transmission gates driven by dedicated digital control inputs (IN1–IN4). Its architecture ensures flat on-resistance (<0.8Ω variation over 0V to V+ signal range) and minimal charge injection (2pC typical), critical for sample-and-hold and multiplexed ADC interfaces.
Operating from a single supply (1.8V–5.5V), it maintains functional integrity down to 1.8V while delivering <0.1nA off-leakage at +25°C and supporting rail-to-rail analog signals - eliminating level-shifting requirements in portable instrumentation and sensor interface designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (RON) | 4Ω max at V+ = 5V - enables low insertion loss in signal paths up to ±50mA continuous current. |
| On-Resistance Matching | 0.2Ω max between channels - ensures consistent gain/attenuation across multi-channel routing without calibration. |
| Supply Voltage Range | +1.8V to +5.5V - supports direct integration into Li-ion (3.0–4.2V) and USB-powered (5V) systems without regulators. |
| Turn-On / Turn-Off Time | 11ns / 6ns typ at 5V - suitable for high-speed multiplexing in data acquisition sampling rates up to ~30MHz. |
| Off-Isolation | -75dB at 1MHz - suppresses crosstalk between inactive channels in dense analog routing layouts. |
| Rail-to-Rail Signal Range | GND to V+ - allows full-swing analog signals without clipping or external biasing networks. |
| Logic Compatibility | TTL/CMOS input thresholds (VIH = 2.4V, VIL = 0.8V at 5V) - interoperable with standard microcontroller GPIOs. |
Pinout & Package
MAX4651EGE is housed in a 16-pin QFN package (4mm × 4mm, 0.5mm pitch) with exposed pad (non-connected per datasheet). Pin 1 is located at top-left corner of top view; pin numbering proceeds counterclockwise.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1–IN4 | Digital control inputs | Active-low logic controls NC state: logic '0' closes switch (COM↔NC), logic '1' opens it. |
| COM1–COM4 | Analog common terminals | Input/output node shared between NC path and internal switch structure; connects to signal source/load. |
| NC1–NC4 | Analog normally closed terminals | Default-closed path to COM when INx = 0; open only when INx = 1 - no NO terminals present. |
| V+ | Positive supply | Single power rail (1.8V–5.5V); powers analog switch core and input buffers. |
| GND | Ground reference | Return path for supply and analog signals; must be low-impedance for leakage and THD performance. |
| N.C. | No connection | Pins 3, 6, 11, 14 are unconnected internally - must be left floating or tied to GND per layout best practice. |
Key Features
| Feature | Design Value |
|---|---|
| Quad NC SPST topology | Provides fail-safe closed-path default state - essential for safety-critical signal bypass or power-on connectivity. |
| 0.2Ω max RON matching | Enables channel-to-channel gain tracking ≤0.01% in multi-input instrumentation amplifiers and sensor arrays. |
| 2pC typical charge injection | Minimizes voltage glitch on sampled nodes - supports 16-bit+ resolution in precision sample-and-hold circuits. |
| -100dB crosstalk at 1MHz | Prevents interference between adjacent switched audio or sensor channels in compact PCB layouts. |
| 1.8V operational minimum | Permits direct use with ultra-low-power MCUs (e.g., ARM Cortex-M0+) without level translation. |
Applications
| Battery-Powered Audio Routing | Low-Voltage Data Acquisition |
|---|---|
Use Scenario: Switching microphone inputs or headphone outputs in portable medical monitors and handheld test meters. IC Role / Device Role / Timing Role: Quad NC analog switch providing zero-bias signal path selection with automatic default closure on power-up. Use Value: Eliminates mechanical relay wear-out and reduces board area by >70% versus electromechanical solutions while maintaining <0.02% THD. |
Use Scenario: Multiplexing thermocouple, RTD, and strain gauge sensors into a single ADC front-end in industrial IoT nodes. IC Role / Device Role / Timing Role: Precision analog switch enabling sequential sensor sampling with matched on-resistance to minimize channel gain error. Use Value: Achieves ≤0.05% channel-to-channel gain mismatch across temperature (-40°C to +85°C) without trimming. |
| Sample-and-Hold Circuits | Relay Replacement in ATE |
Use Scenario: Holding analog voltage samples during ADC conversion cycles in portable spectrum analyzers and oscilloscopes. IC Role / Device Role / Timing Role: Low-charge-injection NC switch isolating hold capacitor from input source during acquisition phase. Use Value: Limits droop-induced error to <1 LSB in 16-bit systems due to 2pC typical injection and <0.1nA off-leakage. |
Use Scenario: Replacing electromechanical relays in automated test equipment for high-cycle-count signal path configuration. IC Role / Device Role / Timing Role: Solid-state SPST switch delivering >100M operations lifetime versus <1M for mechanical relays. Use Value: Reduces mean time between failures (MTBF) by 10× and eliminates contact bounce artifacts in timing-critical stimulus/response tests. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4652EGE | Quad NO (normally open) configuration instead of NC; identical RON, timing, and package. | Suitable where default-open state is required (e.g., power-down isolation), not fail-safe closure. | Select MAX4652EGE only when circuit requires de-energized-open behavior - not drop-in replacement for MAX4651EGE. |
| ADG1411BRUZ | 4Ω max RON at 5V but rated for ±15V dual supply; higher 12ns tON/tOFF; 16-TSSOP only (no 4×4 QFN). | Better suited for industrial ±10V signal chains; incompatible pinout and thermal profile vs. MAX4651EGE QFN. | Choose ADG1411BRUZ for dual-supply systems requiring wider voltage swing - not for space-constrained 1.8V–5.5V portable designs. |
Compared with MAX4652EGE and ADG1411BRUZ, the MAX4651EGE uniquely combines NC default state, 4×4 mm QFN footprint, and guaranteed 1.8V operation - making it irreplaceable in battery-powered systems demanding fail-safe analog connectivity and minimal PCB real estate.
Availability
MAX4651EGE is available at Aetrix Electronics and suitable for battery-powered systems, audio and 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 MAX4651EGE 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 MAX4651/MAX4652/MAX4653 family was designed specifically for low-voltage, low-distortion analog signal routing in portable and space-constrained systems - prioritizing rail-to-rail operation, sub-10ns switching, and ultra-low leakage over legacy high-voltage switch trade-offs.
FAQ
What is the default switch state of MAX4651EGE?
The MAX4651EGE features four normally closed (NC) SPST switches. When all digital control inputs (IN1–IN4) are logic low (≤0.8V), each COM–NC path is closed. Applying logic high (≥2.4V at 5V supply) opens the respective switch. This NC behavior provides fail-safe connectivity on power-up or controller reset - a key distinction from NO variants like MAX4652EGE.
Does MAX4651EGE support rail-to-rail analog signals?
Yes, MAX4651EGE supports rail-to-rail analog signals from GND to V+. Its CMOS switch architecture allows input voltages spanning the full supply range without distortion or clipping - verified across V+ = 1.8V to 5.5V. This eliminates need for external biasing in single-supply sensor interfaces and audio line drivers.
What is the maximum continuous current rating for MAX4651EGE?
MAX4651EGE supports ±50mA continuous current through each COM, NC, or NO terminal (though NO pins are unconnected in this variant). This rating applies across the full operating temperature range (-40°C to +85°C) and is validated under worst-case thermal conditions per Absolute Maximum Ratings table.
Can MAX4651EGE operate from a 1.8V supply?
Yes, MAX4651EGE is fully specified for operation down to +1.8V. At 1.8V, typical on-resistance rises to 30Ω (vs. 4Ω at 5V), but logic inputs remain compatible (VIH = 0.65×V+, VIL = 0.35×V+), and all timing, leakage, and isolation specs are maintained - enabling direct use with ultra-low-power microcontrollers.
Is the exposed pad on the MAX4651EGE QFN package electrically connected?
No, the exposed pad on the MAX4651EGE 16-pin QFN (4×4 mm) package is not internally connected. Per Maxim's datasheet Package Information section, it serves only as a thermal and mechanical anchor - and must be soldered to a PCB thermal pad for optimal thermal performance, but should not be tied to any electrical net including GND or V+.
MAX4651EGE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Switch Circuit:
- SPST - Closed
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 4
- On-State Resistance (Max):
- 4Ohm
- Channel-to-Channel Matching (ΔRon):
- 50mOhm
- Voltage - Supply, Single (V+):
- 1.8V ~ 5.5V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 14ns, 8ns
- -3db Bandwidth:
- -
- Charge Injection:
- 2pC
- Channel Capacitance (CS(off), CD(off)):
- 16pF, 16pF
- Current - Leakage (IS(off)) (Max):
- 100pA
- Crosstalk:
- -100dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QFN (5x5)
MAX4651EGE FAQ
1.How can I place an order for MAX4651EGE through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4651EGE 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 MAX4651EGE reliable?
The price and inventory of MAX4651EGE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4651EGE is usually 5 days.
3.What payment methods are accepted for MAX4651EGE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4651EGE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4651EGE?
MAX4651EGE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4651EGE 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 MAX4651EGE?
For technical support, including MAX4651EGE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4651EGE requirements.
6.How does Aetrix verify that MAX4651EGE is sourced from the original manufacturer or authorized distributors?
All MAX4651EGE 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 MAX4651EGE meets industry standards.
7.What is the process for return or replacement of MAX4651EGE?
All MAX4651EGE units undergo pre-shipment inspection (PSI). If there is an issue with MAX4651EGE, 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 MAX4651EGE part is unused and in its original packaging.
Return procedure for MAX4651EGE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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