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Analog Devices Inc./Maxim Integrated MAX4651EGP
- Part No.:
- MAX4651EGP
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 20-VQFN Exposed Pad
- Datasheet:
-
MAX4651EGP.pdf
- Description:
- IC SW SPSTX4 4OHM 20QFN
- Quantity:
- Payment:
- Shipping:
Inventory:22,394
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Product details
Overview
MAX4651EGP from Maxim Integrated is a quad, single-pole single-throw (SPST), normally closed (NC) analog switch IC operating from a single +1.8V to +5.5V supply. It delivers 4Ω max on-resistance at +5V, 0.2Ω max on-resistance matching between channels, and rail-to-rail analog signal handling up to ±5.5V. Designed for low-distortion signal routing, it serves in battery-powered audio/video multiplexing and precision data-acquisition front-ends.
For engineers reviewing the MAX4651EGP datasheet, MAX4651EGP pinout, MAX4651EGP application, or MAX4651EGP equivalent, key selection criteria include its 20-pin QFN (4×4 mm) package, NC-switch topology, sub-12ns switching times, -75dB off-isolation at 1MHz, and compatibility with TTL/CMOS logic levels across wide supply voltage range.
Technical Context
The MAX4651EGP implements four independent CMOS SPST switches with normally closed configuration-each COM terminal connects to its NC terminal when the corresponding IN input is logic low. Its architecture ensures matched RON and flat RON over the full signal range (0V to V+), critical for minimizing harmonic distortion in audio and instrumentation paths.
All switches support rail-to-rail analog signals, exhibit only 0.1nA off-leakage at +25°C, and maintain <2.5Ω RON flatness at +3V supply. The device uses internal protection diodes and requires no external biasing, enabling direct integration into low-voltage, high-fidelity analog signal chains without level-shifting circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (RON) | 4Ω max at +5V supply - ensures minimal insertion loss and voltage drop in signal paths up to ±5.5V. |
| On-Resistance Matching | 0.2Ω max across all four switches - enables precise channel-to-channel gain tracking in multi-path systems. |
| On-Resistance Flatness | 0.8Ω max over 0V to V+ at +5V - maintains consistent THD <0.02% across full analog input range. |
| Turn-On / Turn-Off Time | 11ns / 6ns typical at +5V - supports high-speed multiplexing in sample-and-hold and communications circuits. |
| Off-Isolation | -75dB at 1MHz - suppresses crosstalk between inactive channels in dense analog routing applications. |
| Supply Voltage Range | +1.8V to +5.5V single supply - allows operation directly from Li-ion, 3.3V, or 5V rails without regulation. |
| Logic Compatibility | TTL/CMOS-input compatible with VIH = 2.4V, VIL = 0.8V at +5V - interfaces seamlessly with microcontrollers and FPGAs. |
Pinout & Package
MAX4651EGP is housed in a 20-pin QFN package (4mm × 4mm, 0.5mm pitch) with exposed pad (EP) for thermal dissipation. Pin 1 is located at top-left corner adjacent to marking dot; EP is internally connected to GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1–IN4 (Pins 19, 1, 9, 17) | Digital control inputs | Active-low logic: low = NC path closed; high = open. Compatible with 1.8V–5.5V logic families. |
| COM1–COM4 (Pins 15, 16, 11, 7) | Analog common terminals | Signal entry points; each connects to respective NC terminal when corresponding IN is low. |
| NC1–NC4 (Pins 2, 14, 12, 6) | Normally closed analog terminals | Default connection to COM; no NO terminals present - distinct from MAX4652/MAX4653 variants. |
| V+ (Pin 13) | Positive supply input | Accepts +1.8V to +5.5V; powers analog switch core and logic interface simultaneously. |
| GND (Pin 3) | Ground reference | Reference for both analog signal range and digital logic; must be low-impedance for leakage control. |
| N.C. (Pins 4, 5, 8, 10, 18, 20) | No-connect terminals | Not internally bonded - must remain unconnected per datasheet; no pull-up/down required. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal handling | Supports input/output signals from GND to V+, eliminating need for external level shifters in mixed-supply systems. |
| Low charge injection (2pC typical) | Minimizes voltage glitch on sampled nodes - essential for precision sample-and-hold and ADC front-end designs. |
| Ultra-low off-leakage (0.1nA max) | Preserves signal integrity in high-impedance sensor interfaces and battery-powered metering applications. |
| Crosstalk rejection (-100dB at 1MHz) | Prevents interference between active and inactive channels in multi-signal routing such as video matrix switching. |
| Break-before-make not applicable | NC-only topology eliminates transition glitches during state change - simplifies timing-critical control sequences. |
Applications
| Audio Signal Routing | Portable Data Acquisition |
|---|---|
|
Use Scenario: Multiplexing microphone inputs or headphone outputs in a handheld audio codec. IC Role / Device Role / Timing Role: Quad NC switch routes analog audio paths under microcontroller GPIO control; no break-before-make delay required. Use Value: 4Ω RON and 0.02% THD preserve SNR >95dB; 1.8V operation extends battery life in wearables. |
Use Scenario: Channel selection in a 4-channel medical ECG front-end with programmable gain amplifier. IC Role / Device Role / Timing Role: Isolates electrode inputs during calibration cycles using low-leakage NC paths. Use Value: 0.1nA off-leakage prevents DC offset drift; rail-to-rail range accommodates ±2.5V biopotential signals. |
| Battery-Powered Test Equipment | Relay Replacement in Industrial I/O |
|
Use Scenario: Signal path switching in handheld multimeter auto-ranging circuitry. IC Role / Device Role / Timing Role: Replaces electromechanical relays for voltage/current range selection under MCU command. Use Value: 20ns tON enables fast range settling; 4Ω RON introduces negligible error vs. relay contact resistance. |
Use Scenario: Isolating analog sensor inputs in PLC analog input modules. IC Role / Device Role / Timing Role: Provides solid-state, maintenance-free replacement for 12V coil relays in 24V industrial backplanes. Use Value: Eliminates coil power draw and mechanical wear; -40°C to +85°C rating matches industrial temperature requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4652EGP | Quad NO (normally open) topology instead of NC; identical RON, timing, and package. | Requires inverted logic control; unsuitable where default-closed path is safety-critical (e.g., fail-safe sensor monitoring). | Select MAX4652EGP only when open-circuit default state is required; verify control logic polarity compatibility. |
| ADG1412BRUZ | Quad SPST, NO/NC configurable via external pins; 1.8Ω RON at +5V; 16-TSSOP only (no 20-QFN option). | Higher performance but larger footprint and higher cost; lacks 20-QFN package for space-constrained designs. | Choose ADG1412BRUZ if lower RON and configurable topology justify PCB area increase and cost premium. |
Compared with MAX4652EGP and ADG1412BRUZ, the MAX4651EGP uniquely provides NC functionality in a compact 20-QFN package with industry-leading leakage and flatness specs-making it optimal for default-closed, low-power, high-precision analog routing where board space is constrained.
Availability
MAX4651EGP is available at Aetrix Electronics and suitable for battery-powered systems, audio/video signal routing, low-voltage data-acquisition systems, sample-and-hold circuits, and relay replacement applications requiring stable component supply and long-term manufacturability.
Supply support for MAX4651EGP 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 product line was designed specifically for low-voltage, low-distortion analog signal switching in portable and precision instrumentation systems-emphasizing rail-to-rail operation, ultra-low leakage, and sub-5V compatibility.
FAQ
What is the maximum supply voltage rating for MAX4651EGP?
The MAX4651EGP has an absolute maximum supply voltage (V+ to GND) of +6V. However, its specified operational range is +1.8V to +5.5V. Operating beyond +5.5V risks exceeding electrical limits and may cause permanent damage. The MAX4651EGP is rated for continuous operation at +5.5V with full parameter compliance per datasheet conditions.
Does MAX4651EGP support rail-to-rail analog signals?
Yes, the MAX4651EGP supports true rail-to-rail analog signal operation - signals from GND to V+ pass through the switch with minimal distortion. This capability is enabled by its CMOS switch architecture and is confirmed across the full +1.8V to +5.5V supply range. The MAX4651EGP maintains 4Ω max RON and 0.8Ω max flatness over this entire signal range at +5V.
How many analog channels does MAX4651EGP provide, and what is their configuration?
The MAX4651EGP provides four independent analog SPST channels, each configured as normally closed (NC). When the corresponding INx input is logic low, the COMx terminal connects to NCx; when INx is high, the path opens. Unlike MAX4652EGP (NO) or MAX4653EGP (mixed), the MAX4651EGP contains no NO terminals - all four switches are NC-only.
What is the thermal pad connection requirement for MAX4651EGP's 20-pin QFN package?
The exposed thermal pad (EP) on the MAX4651EGP's 20-pin QFN package must be soldered to a solid GND plane on the PCB for optimal thermal performance and electrical stability. Per Maxim's datasheet, EP is internally connected to GND - no separate connection is needed. Failure to thermally anchor the pad may result in elevated junction temperature and degraded RON flatness or leakage performance.
Can MAX4651EGP be used with a 1.8V logic supply?
Yes, the MAX4651EGP is fully specified for 1.8V operation: VIH = 1.2V (min), VIL = 0.6V (max) at V+ = 1.8V, and RON remains ≤30Ω typical across temperature. Its TTL/CMOS-compatible inputs accept 1.8V logic levels directly, and internal circuitry operates correctly down to 1.8V supply - making the MAX4651EGP suitable for ultra-low-power IoT sensor nodes and energy-harvesting systems.
MAX4651EGP 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:
- 20-QFN (5x5)
MAX4651EGP FAQ
1.How can I place an order for MAX4651EGP through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4651EGP 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 MAX4651EGP reliable?
The price and inventory of MAX4651EGP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4651EGP is usually 5 days.
3.What payment methods are accepted for MAX4651EGP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4651EGP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4651EGP?
MAX4651EGP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4651EGP 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 MAX4651EGP?
For technical support, including MAX4651EGP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4651EGP requirements.
6.How does Aetrix verify that MAX4651EGP is sourced from the original manufacturer or authorized distributors?
All MAX4651EGP 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 MAX4651EGP meets industry standards.
7.What is the process for return or replacement of MAX4651EGP?
All MAX4651EGP units undergo pre-shipment inspection (PSI). If there is an issue with MAX4651EGP, 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 MAX4651EGP part is unused and in its original packaging.
Return procedure for MAX4651EGP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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