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Analog Devices Inc./Maxim Integrated MAX4680CAE+T
- Part No.:
- MAX4680CAE+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
MAX4680CAE+T.pdf
- Description:
- IC SW SPST-NCX2 1.25OHM 16SSOP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MAX4680CAE+T from Maxim Integrated is a dual SPST analog switch with two normally closed (NC) channels, designed for precision signal routing in rail-to-rail analog paths. It delivers 1.25Ω max on-resistance, 0.3Ω max RON match between channels, and 5nA max off-leakage at +85°C, enabling low-distortion switching in data acquisition and test equipment.
For engineers reviewing the MAX4680CAE+T datasheet, MAX4680CAE+T pinout, MAX4680CAE+T application, or MAX4680CAE+T equivalent, key selection criteria include guaranteed break-before-make absence (distinguishing it from MAX4700), NC-only topology, single/dual supply flexibility (+4.5V to +36V or ±4.5V to ±20V), and TTL/CMOS-compatible control with separate VL pin.
Technical Context
The MAX4680CAE+T implements a CMOS-based dual SPST architecture with independent NC switches-no internal NO path-making it functionally distinct from MAX4690 (NO-only) and MAX4700 (mixed NC/NO with break-before-make). Its analog signal path supports rail-to-rail operation across the full supply range, with on-resistance flatness held to ≤0.3Ω over ±10V input swing.
Control logic uses a dedicated VL pin for TTL/CMOS compatibility regardless of analog supply voltage, decoupling logic threshold stability from V+ and V- variations. Internal ESD protection exceeds 2kV per Method 3015.7, and all analog pins tolerate signals beyond rails via clamping diodes (with current limiting required).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (RON) | 1.25Ω max - ensures minimal voltage drop and power loss in high-current analog paths up to ±200mA continuous. |
| RON Match Between Channels | 0.3Ω max - enables matched gain/attenuation in differential or dual-path signal conditioning without calibration. |
| RON Flatness | 0.3Ω max over ±10V - maintains consistent channel behavior across full signal range, critical for audio and instrumentation linearity. |
| Off-Leakage Current | 5nA max at +85°C - preserves signal integrity in high-impedance sample-and-hold or sensor front-ends. |
| Supply Range | +4.5V to +36V single or ±4.5V to ±20V dual - supports industrial, automotive, and legacy ±15V systems without level-shifting. |
| Logic Compatibility | TTL/CMOS inputs with separate VL pin - guarantees reliable switching across wide analog supply voltages without logic-level translation. |
| ESD Protection | >2kV per Method 3015.7 - reduces need for external protection in board-level ESD-prone environments like test fixtures. |
Pinout & Package
MAX4680CAE+T is housed in a 16-pin SSOP (Shrink Small Outline Package) with 0.65mm pitch, optimized for space-constrained PCB layouts while maintaining thermal performance up to +70°C ambient.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 6, 8, 10, 15 | N.C. | No internal connection; tie to GND or low-impedance node to improve off-isolation and reduce crosstalk. |
| 2, 7 | GND | Analog and digital ground reference; must be low-impedance for leakage and noise control. |
| 4 | V− | Negative analog supply; connect to GND for single-supply operation (0V to +V+). |
| 5 | COM1 | Common terminal for first NC switch; carries full signal current and must route away from sensitive nodes. |
| 9, 16 | NC1, NC2 | Normally closed analog terminals - conduct when IN1/IN2 = logic low; open when high. |
| 11, 14 | COM2 | Common terminal for second NC switch; electrically isolated from COM1 but shares same package thermal path. |
| 12 | VL | Dedicated logic supply pin - sets input threshold independently of analog supplies, enabling mixed-voltage system interfacing. |
| 13 | V+ | Positive analog supply; must be sequenced before V− and logic inputs to prevent latch-up or overstress. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-Rail Signal Handling | Supports analog signals from V− to V+ without clipping or distortion, enabling direct interface with op-amps and ADCs operating at supply rails. |
| Guaranteed RON Match | ≤0.3Ω difference between channels - eliminates inter-channel gain mismatch in dual-sensor or stereo signal paths. |
| Low On-Capacitance (275pF) | Minimizes high-frequency loading and phase shift in RF or fast-switching applications such as multiplexed oscilloscope front-ends. |
| Charge Injection (±60pC) | Predictable, low-magnitude charge dump during switching - simplifies hold capacitor sizing in sample-and-hold circuits. |
| Break-Before-Make Absence | Simultaneous closure/opening of both NC paths - avoids signal interruption in fail-safe NC-critical applications like emergency shutoff paths. |
Applications
| Reed Relay Replacement | Data Acquisition Systems |
|---|---|
Use Scenario: Replacing electromechanical relays in automated test equipment where cycle life, speed, and size are constrained. IC Role / Device Role / Timing Role: Dual NC analog switch providing fail-safe closed-path default state with sub-400ns turn-on time. Use Value: Eliminates relay bounce, wear-out, and coil drive circuitry while maintaining signal continuity during power loss due to NC topology. |
Use Scenario: Multiplexing multiple sensor outputs into a shared ADC channel in industrial monitoring systems. IC Role / Device Role / Timing Role: Low-RON, low-leakage analog switch routing ±10V sensor signals without gain error or offset drift. Use Value: Enables 16-bit+ measurement accuracy by minimizing channel-to-channel RON mismatch and off-state leakage-induced crosstalk. |
| Test Equipment Signal Routing | Communication System Channel Switching |
Use Scenario: Configurable signal path selection in benchtop multimeters or signal analyzers requiring low THD and high off-isolation. IC Role / Device Role / Timing Role: Dual NC switch isolating unused signal paths with −53dB off-isolation and −65dB crosstalk at 1MHz. Use Value: Maintains measurement fidelity by preventing leakage from active channels into high-impedance measurement inputs. |
Use Scenario: Dynamic routing of analog voice or modem signals in PBX/PABX infrastructure with hot-swap capability. IC Role / Device Role / Timing Role: Rail-to-rail SPST switch handling 0–3.3V or ±12V signaling with <5nA leakage at elevated temperature. Use Value: Supports long-term reliability in telecom cabinets by eliminating mechanical contact degradation and reducing power consumption vs. relay solutions. |
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 |
|---|---|---|---|
| MAX4690CAE+T | Two normally open (NO) switches instead of NC; identical RON, leakage, and supply specs. | Suitable where default-open safety state is required (e.g., power-down isolation), not fail-safe continuity. | Select MAX4690CAE+T only if system requires de-energized default open state; not interchangeable with MAX4680CAE+T due to opposite logic polarity and terminal assignment. |
| ADG1419BRUZ | Single-supply only (±5V to ±22V dual not supported); 1.3Ω RON; no separate VL pin - logic thresholds track V+. | Better suited for compact, single-rail systems where supply flexibility is secondary to ultra-low charge injection (2pC). | Choose ADG1419BRUZ when operating strictly from one supply and minimizing charge feedthrough is critical; avoid if dual-supply or VL-decoupled logic is needed. |
Compared with MAX4690CAE+T, MAX4680CAE+T provides inherent fail-safe continuity but cannot achieve true break-before-make; versus ADG1419BRUZ, it offers wider supply adaptability and logic-level independence at the cost of higher charge injection - making MAX4680CAE+T optimal for robust, multi-rail NC routing where default closure is mandatory.
Availability
MAX4680CAE+T is available at Aetrix Electronics and suitable for reed relay replacement, data acquisition systems, test equipment signal routing, communication system channel switching, and PBX/PABX infrastructure requiring stable component supply across industrial temperature ranges.
Supply support for MAX4680CAE+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) designs high-performance analog and mixed-signal ICs for industrial, communications, and computing applications, emphasizing precision, reliability, and integration.
The MAX4680CAE+T belongs to Maxim's precision analog switch family targeting low-RON, rail-to-rail, and low-leakage signal routing - engineered specifically for replacing electromechanical relays and enhancing accuracy in automated test and data acquisition systems.
FAQ
What is the maximum continuous current rating for MAX4680CAE+T?
The MAX4680CAE+T supports ±200mA continuous current through its COM, NC1, and NC2 terminals. This rating applies across the full operating temperature range (0°C to +70°C) and is validated under specified thermal conditions in the SSOP package. Exceeding this limit risks irreversible RON drift or bond-wire failure. For pulsed operation, peak current up to ±300mA is allowed at 1ms width and 10% duty cycle.
Does MAX4680CAE+T support break-before-make switching?
No, MAX4680CAE+T does not feature break-before-make switching. It implements two independent normally closed (NC) SPST switches with simultaneous actuation - both open or close together upon logic input change. Break-before-make is exclusive to the MAX4700 variant. Using MAX4680CAE+T in applications requiring guaranteed isolation during transition may necessitate external timing control or system-level sequencing.
Can MAX4680CAE+T operate from a single 5V supply?
Yes, MAX4680CAE+T operates from a +4.5V to +36V single supply. With V− tied to GND, V+ set to +5V, and VL = +3.3V or +5V, the device functions fully - delivering 1.25Ω max RON, rail-to-rail signal handling (0V to +5V), and 5nA max off-leakage. Logic inputs remain compatible via the dedicated VL pin, eliminating level-shifter requirements in mixed-voltage 5V systems.
What is the purpose of the N.C. pins (1, 3, 6, 8, 10, 15) on MAX4680CAE+T?
The N.C. pins on MAX4680CAE+T are not internally connected and serve no functional role in the switch circuit. However, Maxim recommends tying them to GND or a low-impedance node to reduce off-isolation degradation and minimize capacitive crosstalk between adjacent channels. Leaving them floating may increase susceptibility to noise coupling and degrade high-frequency performance, especially in dense PCB layouts.
How does the VL pin affect logic compatibility in MAX4680CAE+T?
The VL pin on MAX4680CAE+T sets the logic threshold independently of analog supplies - enabling TTL/CMOS compatibility even when V+ is +36V or V− is −20V. With VL = +3.3V, logic high is recognized at ≥2.4V and low at ≤0.8V, regardless of analog rail values. This decoupling prevents false triggering in systems with widely varying analog and digital supply domains, a key advantage over switches without dedicated logic supply pins.
MAX4680CAE+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Circuit:
- SPST - NC
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 1.25Ohm
- Channel-to-Channel Matching (ΔRon):
- 90mOhm
- Voltage - Supply, Single (V+):
- 4.5V ~ 36V
- Voltage - Supply, Dual (V±):
- ±4.5V ~ 20V
- Switch Time (Ton, Toff) (Max):
- 275ns, 175ns
- -3db Bandwidth:
- -
- Charge Injection:
- 55pC
- Channel Capacitance (CS(off), CD(off)):
- 115pF, 115pF
- Current - Leakage (IS(off)) (Max):
- 500pA
- Crosstalk:
- -65dB @ 1MHz
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SSOP
MAX4680CAE+T FAQ
1.How can I place an order for MAX4680CAE+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4680CAE+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 MAX4680CAE+T reliable?
The price and inventory of MAX4680CAE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4680CAE+T is usually 5 days.
3.What payment methods are accepted for MAX4680CAE+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4680CAE+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4680CAE+T?
MAX4680CAE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4680CAE+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 MAX4680CAE+T?
For technical support, including MAX4680CAE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4680CAE+T requirements.
6.How does Aetrix verify that MAX4680CAE+T is sourced from the original manufacturer or authorized distributors?
All MAX4680CAE+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 MAX4680CAE+T meets industry standards.
7.What is the process for return or replacement of MAX4680CAE+T?
All MAX4680CAE+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4680CAE+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 MAX4680CAE+T part is unused and in its original packaging.
Return procedure for MAX4680CAE+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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