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Analog Devices Inc./Maxim Integrated MAX4680CWE+
- Part No.:
- MAX4680CWE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX4680CWE+.pdf
- Description:
- IC SW SPST-NCX2 1.25OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,228
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Product details
Overview
The MAX4680CWE+ from Maxim Integrated is a dual SPST CMOS analog switch with two normally closed (NC) channels, designed for rail-to-rail signal routing in precision 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 MAX4680CWE+ datasheet, MAX4680CWE+ pinout, MAX4680CWE+ application, or MAX4680CWE+ equivalent, key selection criteria include guaranteed NC configuration, ±4.5V to ±20V dual-supply or +4.5V to +36V single-supply operation, TTL/CMOS-compatible control via separate VL pin, and break-before-make exclusion (as MAX4680 lacks this feature).
Technical Context
The MAX4680CWE+ implements a dual-channel, normally closed analog switch architecture using high-voltage CMOS process technology. Each channel supports rail-to-rail analog signal handling across its full specified supply range, with on-resistance flatness maintained within 0.3Ω over ±10V signal swing and matched to ≤0.3Ω between COM1–NC1 and COM2–NC2 paths.
It features independent logic-level translation via dedicated VL pin (0.8V to 5.5V), enabling TTL/CMOS input compatibility regardless of analog supply voltage. Internal ESD protection exceeds 2kV per Method 3015.7, and all analog pins tolerate signals beyond V+/V− rails via integrated clamping diodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (RON) | 1.25Ω max - ensures minimal signal attenuation and voltage drop in low-impedance analog paths |
| RON Match | 0.3Ω max - enables precise channel-to-channel gain matching in differential or multiplexed signal chains |
| RON Flatness | 0.3Ω max over ±10V - maintains consistent insertion loss across full analog input range |
| Off-Leakage Current | 5nA max at +85°C - preserves accuracy 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 wide-range test system power architectures |
| Logic Compatibility | TTL/CMOS via VL pin (0.8V–5.5V) - decouples digital control voltage from analog supply, simplifying mixed-voltage board design |
| ESD Protection | >2kV HBM - enhances robustness during handling and system integration without external protection |
Pinout & Package
MAX4680CWE+ is housed in a 16-pin Wide SO (SOIC-W) package, 7.5mm body width, 1.27mm pitch, RoHS-compliant and lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 6, 8, 10, 15 | No Connect (N.C.) | Not internally connected; tie to GND or low-impedance node to improve isolation performance |
| 2, 7 | GND | Analog/digital ground reference; must be low-impedance return path for leakage and switching currents |
| 4 | V− | Negative analog supply input; connect to GND for single-supply operation |
| 5 | COM1 | Common terminal for first NC switch; connects to NC1 when IN1 = logic low |
| 9, 16 | NC1, NC2 | Normally closed analog terminals; conduct to COM1/COM2 when respective IN = low |
| 11, 14 | COM2 | Common terminal for second NC switch; connects to NC2 when IN2 = logic low |
| 12 | VL | Dedicated logic supply input; sets input threshold independently of V+/V− |
| 13 | V+ | Positive analog supply input; defines upper rail for rail-to-rail signal handling |
| 1, 3 | IN1, IN2 | Digital control inputs; active-low logic controls NC closure (low = ON, high = OFF) |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed NC configuration | Ensures fail-safe closed-path behavior at power-up or logic-inactive state, critical for safety-critical signal monitoring |
| Rail-to-rail signal handling | Supports full-swing analog signals from V− to V+, eliminating level-shifting needs in ±15V or +24V systems |
| Separate VL pin | Enables 3.3V or 5V microcontroller control while operating from ±18V analog supplies - no level translators required |
| Low charge injection (±60pC) | Minimizes voltage glitch in sample-and-hold circuits, preserving DC accuracy after switching |
| High off-isolation (−53dB) | Reduces crosstalk between active and inactive channels in multi-channel DAQ systems |
Applications
| Reed Relay Replacement | Data Acquisition Systems |
|---|---|
Use Scenario: Replacing electromechanical relays in automated test fixtures where cycle life, speed, and size are constrained. IC Role / Device Role / Timing Role: Dual NC analog switch providing solid-state, bounce-free signal path closure with sub-400ns turn-on time. Use Value: Eliminates relay wear-out, reduces PCB area by >70%, and enables 100x faster switching than typical reed relays. | Use Scenario: Channel multiplexing in 16-bit precision ADC front-ends for industrial sensors. IC Role / Device Role / Timing Role: Low-RON, matched dual switch routing analog sensor outputs to shared ADC input. Use Value: Maintains gain accuracy (≤0.3Ω RON match) and minimizes offset drift (5nA leakage at +85°C). |
| Test Equipment Signal Routing | Communication System Line Switching |
Use Scenario: Signal path selection in modular ATE platforms requiring low distortion and wide dynamic range. IC Role / Device Role / Timing Role: Rail-to-rail analog switch handling ±12V test signals with <−65dB crosstalk between channels. Use Value: Preserves signal integrity up to 1MHz (−3dB bandwidth), supporting broadband stimulus-response testing. | Use Scenario: Analog line switching in PBX/PABX voice interface modules with ±15V signaling. IC Role / Device Role / Timing Role: NC-switch-based fault-tolerant path selection ensuring default connection during control failure. Use Value: Guarantees continuity in voice path even during MCU reset or logic interruption. |
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 |
|---|---|---|---|
| MAX4690CWE+ | Dual NO (normally open) configuration vs. MAX4680CWE+'s dual NC; identical RON, leakage, and supply specs | Suitable where default-open signal path is required (e.g., safety interlocks, power-down isolation) | Select MAX4690CWE+ only if fail-open behavior is mandatory; not pin-compatible due to differing NC/NO pin assignments |
| ADG1419BRUZ | Single-supply only (+5V to +36V); 1.3Ω RON; no separate VL pin; requires same supply for logic and analog | Better suited for cost-sensitive, single-rail systems without mixed-voltage control requirements | Choose ADG1419BRUZ when VL independence is unnecessary and layout space allows SOIC-16 footprint adaptation |
Compared with MAX4680CWE+, MAX4690CWE+ provides inverse logic behavior (NO vs. NC) with identical electrical performance but incompatible pin mapping, while ADG1419BRUZ sacrifices VL flexibility and dual-supply capability for lower unit cost in single-rail designs.
Availability
MAX4680CWE+ is available at Aetrix Electronics and suitable for reed relay replacement, data acquisition systems, test equipment signal routing, communication system line switching, and PBX/PABX systems requiring stable component supply across industrial temperature ranges.
Supply support for MAX4680CWE+ 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.
The MAX4680CWE+ belongs to Maxim's precision analog switch product line, engineered for low-RON, rail-to-rail operation, and robust performance in automatic test equipment and data acquisition systems.
FAQ
What is the maximum operating temperature range for the MAX4680CWE+?
The MAX4680CWE+ is rated for commercial temperature operation from 0°C to +70°C. This grade is validated per the MAX4680C_ ordering suffix and applies specifically to the CWE+ package variant. For extended industrial use, the MAX4680EWE+ (−40°C to +85°C) is available. The MAX4680CWE+'s leakage, RON, and timing parameters are fully specified across its 0°C to +70°C range.
Does the MAX4680CWE+ support break-before-make switching?
No, the MAX4680CWE+ does not support break-before-make switching. It is a dual normally closed (NC) device with independent channel control; both switches can be simultaneously ON or OFF, but no internal timing circuitry enforces a break interval. Break-before-make is exclusive to the MAX4700 family variant. Designers requiring guaranteed isolation during state transitions must select MAX4700CWE+ instead of MAX4680CWE+.
Can the MAX4680CWE+ operate from a single +12V supply?
Yes, the MAX4680CWE+ supports single-supply operation from +4.5V to +36V. With V+ = +12V and V− tied to GND, it maintains 1.25Ω max RON, 5nA max off-leakage at +85°C, and full rail-to-rail signal handling from 0V to +12V. The VL pin must be supplied at a valid logic level (e.g., +3.3V or +5V) independent of V+, preserving TTL/CMOS compatibility.
What is the purpose of the N.C. pins (1, 3, 6, 8, 10, 15) on the MAX4680CWE+?
The N.C. pins on the MAX4680CWE+ are not internally connected and serve no functional role in normal operation. However, Maxim recommends connecting them to GND or a low-impedance node to improve off-isolation and reduce crosstalk between channels. Leaving them floating may degrade high-frequency isolation performance, particularly in sensitive analog routing applications where the MAX4680CWE+ is deployed.
How does the VL pin on the MAX4680CWE+ improve system design flexibility?
The VL pin on the MAX4680CWE+ decouples logic-level thresholds from analog supply voltages, allowing direct interfacing with 1.8V, 3.3V, or 5V controllers while the device operates from ±15V analog rails. This eliminates level-shifters and reduces BOM count. For example, a 3.3V FPGA can drive IN1/IN2 of the MAX4680CWE+ with VL = +3.3V, even when V+ = +15V and V− = −15V - a capability not supported by analog switches lacking a dedicated VL pin.
MAX4680CWE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- 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-SOIC
MAX4680CWE+ FAQ
1.How can I place an order for MAX4680CWE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4680CWE+ 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 MAX4680CWE+ reliable?
The price and inventory of MAX4680CWE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4680CWE+ is usually 5 days.
3.What payment methods are accepted for MAX4680CWE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4680CWE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4680CWE+?
MAX4680CWE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4680CWE+ 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 MAX4680CWE+?
For technical support, including MAX4680CWE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4680CWE+ requirements.
6.How does Aetrix verify that MAX4680CWE+ is sourced from the original manufacturer or authorized distributors?
All MAX4680CWE+ 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 MAX4680CWE+ meets industry standards.
7.What is the process for return or replacement of MAX4680CWE+?
All MAX4680CWE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4680CWE+, 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 MAX4680CWE+ part is unused and in its original packaging.
Return procedure for MAX4680CWE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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