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Analog Devices Inc./Maxim Integrated MAX4661EWE+
- Part No.:
- MAX4661EWE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX4661EWE+.pdf
- Description:
- IC SW SPST-NCX4 2.5OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,128
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Product details
Overview
MAX4661EWE+ from Maxim Integrated is a quad SPST analog switch with four normally closed (NC) channels, designed for precision signal routing in rail-to-rail analog paths. It delivers 2.5Ω max on-resistance, 0.5Ω 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 MAX4661EWE+ datasheet, MAX4661EWE+ pinout, MAX4661EWE+ application, or MAX4661EWE+ equivalent, key selection criteria include guaranteed NC configuration, -40°C to +85°C industrial temperature rating, 16-pin Wide SO package, and dual ±4.5V to ±20V or single +4.5V to +36V supply operation.
Technical Context
The MAX4661EWE+ implements CMOS-based transmission-gate architecture with independent logic-level control inputs (IN1–IN4), each driving one NC switch (COMn ↔ NCn). Its internal charge-pump-free design ensures stable RON flatness (≤0.5Ω) across ±10V signal range and supports TTL/CMOS-compatible logic via dedicated VL pin.
It features separate analog supply rails (V+, V−) and logic supply (VL), enabling mixed-voltage system interfacing without level-shifting. The device guarantees break-before-make only in MAX4663 variants-MAX4661EWE+ has strictly NC behavior with no transition overlap.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (RON) | 2.5Ω max - ensures minimal voltage drop and power loss in signal paths up to ±10V. |
| RON Match | 0.5Ω max - enables matched gain/attenuation across all four channels in differential or multi-path systems. |
| RON Flatness | 0.5Ω max over ±10V - maintains consistent channel performance across full analog input range. |
| Off-Leakage Current | 5nA max at +85°C - preserves signal integrity in high-impedance sensor or sample-and-hold circuits. |
| Supply Range | +4.5V to +36V single or ±4.5V to ±20V dual - supports wide-range industrial and test-system power architectures. |
| Logic Compatibility | TTL/CMOS via VL pin - allows direct interface with 3.3V or 5V microcontrollers without external translators. |
| ESD Protection | >2kV per Method 3015.7 - enhances robustness in handling and board-level ESD events. |
Pinout & Package
MAX4661EWE+ is housed in a 16-pin Wide SO (SOIC-W) package, 7.5mm body width, 1.27mm pitch, RoHS-compliant, with exposed pad not present. Pin 1 marked by beveled corner or dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 8, 9, 16 | IN1–IN4 | Digital control inputs; logic low = switch closed (COM↔NC), logic high = open. |
| 2, 7, 10, 15 | COM1–COM4 | Analog common terminals - connected to signal source or load in NC configuration. |
| 3, 6, 11, 14 | NC1–NC4 | Normally closed analog terminals - shorted to COM when IN = low; high-impedance when IN = high. |
| 4 | V− | Negative analog supply - tied to GND for single-supply operation; sets lower rail for bipolar signals. |
| 5 | GND | Ground reference for logic and substrate - must be low-impedance connection to minimize noise coupling. |
| 12 | VL | Logic supply input - decoupled separately to ensure clean switching thresholds across supply range. |
| 13 | V+ | Positive analog supply - defines upper signal rail; must be ≥ |V−| + 4.5V for proper operation. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-Rail Signal Handling | Supports analog signals from V− to V+ without clipping - essential for full-scale ADC front-ends and audio routing. |
| Guaranteed NC Configuration | All four switches default closed at power-up or logic-low - eliminates need for pull-downs in fail-safe signal paths. |
| Low Charge Injection (20pC typ) | Minimizes voltage glitch on sampled nodes - critical for precision sample-and-hold and multiplexed data acquisition. |
| High Off-Isolation (−56dB typ) | Reduces crosstalk between inactive channels - improves SNR in multi-channel instrumentation and comm systems. |
| Wide Supply Flexibility | Operates from single +4.5V to +36V or dual ±4.5V to ±20V - simplifies integration into legacy and new industrial power domains. |
Applications
| Reed Relay Replacement | ADC Front-End Multiplexing |
|---|---|
|
Use Scenario: Replacing electromechanical relays in automated test equipment where cycle life, speed, and size are critical. IC Role / Device Role / Timing Role: Quad NC analog switch providing solid-state, bounce-free signal path selection with <500ns turn-on time. Use Value: Eliminates relay wear-out, reduces PCB area by >70%, and cuts switching energy by >95% versus equivalent reed relays. |
Use Scenario: Channel selection ahead of a precision SAR or sigma-delta ADC in multi-sensor monitoring systems. IC Role / Device Role / Timing Role: Low-RON, matched analog switch ensuring uniform gain error and minimal THD across all inputs. Use Value: Maintains 16-bit+ ENOB by limiting RON mismatch to ≤0.5Ω and off-leakage to ≤5nA at +85°C. |
| Avionics Signal Routing | Audio-Signal Switching |
|
Use Scenario: Selecting between redundant flight control sensors or navigation sources in certified avionics subsystems. IC Role / Device Role / Timing Role: Fail-safe NC switch ensuring default signal continuity during power loss or logic fault. Use Value: Meets DO-160 Section 22 surge immunity and −40°C to +85°C extended temperature qualification out-of-box. |
Use Scenario: Muting, routing, or mixing line-level analog audio in professional broadcast mixers or studio interfaces. IC Role / Device Role / Timing Role: Low-distortion, rail-to-rail analog switch preserving wide dynamic range and frequency response to 100MHz. Use Value: Delivers <−100dB THD+N and flat RON across 20Hz–20kHz, avoiding tonal coloration in critical audio paths. |
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 |
|---|---|---|---|
| MAX4662EWE+ | Four normally open (NO) configuration instead of NC; identical RON, leakage, and supply specs. | Suitable where default-open safety state is required (e.g., power-off isolation in medical devices). | Select MAX4662EWE+ only if system requires de-energized default state; pinout and footprint are identical. |
| ADG1414BRUZ | 4.5Ω max RON, wider −40°C to +125°C rating, but no guaranteed RON match or flatness spec. | Better suited for high-temp automotive under-hood use, but less optimal for precision-matched multi-channel systems. | Choose ADG1414BRUZ for extended temperature or higher voltage (±22V) needs; accept higher RON and no match guarantee. |
Compared with MAX4661EWE+, MAX4662EWE+ offers identical performance in NO mode with zero layout change, while ADG1414BRUZ trades RON precision for broader temperature and voltage tolerance-making MAX4661EWE+ optimal for industrial test and data acquisition where channel matching is critical.
Availability
MAX4661EWE+ is available at Aetrix Electronics and suitable for automated test equipment, avionics signal conditioning, and precision data acquisition systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX4661EWE+ 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 precision analog, mixed-signal, and power-management ICs for industrial, communications, and computing applications.
The MAX4661EWE+ belongs to Maxim's high-performance analog switch family, engineered specifically for low-RON, rail-to-rail signal routing in mission-critical test, measurement, and control systems.
FAQ
What is the default switch state of MAX4661EWE+ at power-up?
The MAX4661EWE+ features four normally closed (NC) switches. At power-up, before any logic input is asserted, all COM–NC paths remain closed as long as V+ and V− are within specification and IN pins are at valid logic-low levels (≤0.8V). This fail-safe NC behavior ensures continuity in safety-critical signal paths without external pull-downs.
Can MAX4661EWE+ operate from a single 5V supply?
Yes, MAX4661EWE+ supports single-supply operation from +4.5V to +36V. With V+ = +5V and V− tied to GND, it handles rail-to-rail analog signals from 0V to +5V. Logic inputs remain compatible via VL pin, which may be tied to +3.3V or +5V depending on controller voltage - confirmed in Electrical Characteristics Table for single-supply conditions.
Does MAX4661EWE+ support break-before-make switching?
No. Break-before-make is guaranteed only for the MAX4663 variant. The MAX4661EWE+ implements strictly normally closed SPST switches with no internal timing control between channels. When multiple IN pins are toggled, transitions occur independently - no guaranteed dead-time or sequencing is provided.
What is the maximum continuous current per switch in MAX4661EWE+?
The MAX4661EWE+ supports ±200mA continuous current through each COM, NC, or NO terminal - verified under Absolute Maximum Ratings. This rating applies across the full operating temperature range and is limited by package thermal resistance and bond-wire capacity, not channel RON.
How does the VL pin affect logic compatibility in MAX4661EWE+?
The VL pin provides an independent logic supply reference, allowing MAX4661EWE+ to accept TTL/CMOS inputs regardless of analog supply voltage. For example, with V+ = +24V and V− = GND, setting VL = +3.3V enables direct interface with 3.3V microcontrollers - eliminating level shifters and preserving noise margins as specified in VIN_H/VIN_L parameters.
MAX4661EWE+ 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:
- 4
- On-State Resistance (Max):
- 2.5Ohm
- Channel-to-Channel Matching (ΔRon):
- 100mOhm
- 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:
- 300pC
- Channel Capacitance (CS(off), CD(off)):
- 55pF, 55pF
- Current - Leakage (IS(off)) (Max):
- 500pA
- Crosstalk:
- -59dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
MAX4661EWE+ FAQ
1.How can I place an order for MAX4661EWE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4661EWE+ 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 MAX4661EWE+ reliable?
The price and inventory of MAX4661EWE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4661EWE+ is usually 5 days.
3.What payment methods are accepted for MAX4661EWE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4661EWE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4661EWE+?
MAX4661EWE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4661EWE+ 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 MAX4661EWE+?
For technical support, including MAX4661EWE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4661EWE+ requirements.
6.How does Aetrix verify that MAX4661EWE+ is sourced from the original manufacturer or authorized distributors?
All MAX4661EWE+ 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 MAX4661EWE+ meets industry standards.
7.What is the process for return or replacement of MAX4661EWE+?
All MAX4661EWE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4661EWE+, 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 MAX4661EWE+ part is unused and in its original packaging.
Return procedure for MAX4661EWE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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