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Analog Devices Inc./Maxim Integrated MAX4684EUB+
- Part No.:
- MAX4684EUB+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX4684EUB+.pdf
- Description:
- IC SWITCH SPDTX2 800MOHM 10UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:1,905
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Product details
Overview
The MAX4684EUB+ from Maxim Integrated is a dual SPDT analog switch IC with 0.5Ω max NC on-resistance and 0.8Ω max NO on-resistance at +2.7V supply, rail-to-rail signal handling, 1.8V logic compatibility, and break-before-make switching (2ns). It operates from +1.8V to +5.5V and is used in audio routing for speaker/headset selection in portable devices.
For engineers reviewing the MAX4684EUB+ datasheet, MAX4684EUB+ pinout, MAX4684EUB+ application, or MAX4684EUB+ equivalent, key selection criteria include on-resistance matching (≤0.06Ω), low charge injection (200pC), THD (0.03%), off-isolation (−64dB), and UCSP/µMAX package compatibility in space-constrained battery-powered designs.
Technical Context
This device implements two independent SPDT switches with asymmetrical RON (NC: 0.5Ω max, NO: 0.8Ω max at +2.7V), enabling optimized performance for unbalanced loads like internal speakers vs. headset outputs. Its 1.8V logic-compatible digital inputs tolerate up to +5.5V regardless of V+, supporting mixed-voltage system interfacing.
Break-before-make timing is tightly controlled (2ns typical), minimizing transient shorting during channel switching. Signal paths support rail-to-rail analog voltages (GND to V+), with flat RON variation (≤0.15Ω for NC, ≤0.35Ω for NO) across the full voltage range, ensuring minimal distortion in audio and precision signal routing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +1.8V to +5.5V single supply - enables direct integration into Li-ion, coin-cell, and 3.3V/5V systems without level-shifting. |
| NC On-Resistance (max) | 0.5Ω at +2.7V - minimizes insertion loss and power dissipation in high-current NC paths (e.g., main speaker output). |
| NO On-Resistance (max) | 0.8Ω at +2.7V - balances low-loss routing with cost-effective silicon area for secondary paths (e.g., headset jack). |
| RON Match (max) | 0.06Ω between channels - ensures matched gain/attenuation in differential or stereo signal paths. |
| THD | 0.03% - preserves audio fidelity in line-level and headphone driver applications without audible distortion. |
| Off-Isolation | −64dB at 100kHz - prevents crosstalk between active and inactive signal paths in multi-source audio systems. |
| Charge Injection | 200pC - limits glitch-induced DC offset in precision sampling or sensor multiplexing circuits. |
Pinout & Package
The MAX4684EUB+ uses a 10-pin µMAX® package (3mm × 3mm), RoHS-compliant, with exposed pad (EP) connected to GND for thermal and EMI performance. Pin numbering follows standard µMAX layout (top view, counterclockwise from notch).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (V+) | Positive Supply Input | Accepts +1.8V to +5.5V; powers analog and digital sections; must be applied before analog signals to avoid latch-up. |
| 2 (NO1) | Analog Output - Normally Open Channel 1 | Connects to COM1 only when IN1 = low; used for secondary signal path (e.g., headset left). |
| 3 (COM1) | Analog Common Terminal - Channel 1 | Central node for SPDT switching; bidirectional; handles rail-to-rail signals up to ±300mA continuous. |
| 4 (IN1) | Digital Control Input - Channel 1 | 1.8V-logic compatible; drives internal switch; high = connect COM1 to NC1, low = connect COM1 to NO1. |
| 5 (NC1) | Analog Output - Normally Closed Channel 1 | Connected to COM1 when IN1 = high; optimized for lower RON (0.5Ω) in primary load paths. |
| 6 (GND) | Ground Reference | Analog/digital common return; EP must be soldered to GND plane for thermal stability and noise reduction. |
| 7 (NC2) | Analog Output - Normally Closed Channel 2 | Independent second SPDT NC path; matches NC1 RON and timing for stereo or dual-signal routing. |
| 8 (IN2) | Digital Control Input - Channel 2 | Independent logic control; supports asynchronous switching of both SPDTs without interference. |
| 9 (COM2) | Analog Common Terminal - Channel 2 | Second bidirectional common node; identical specs to COM1 for parallel channel operation. |
| 10 (NO2) | Analog Output - Normally Open Channel 2 | Secondary output for Channel 2; matches NO1 RON (0.8Ω) and capacitance (150pF on-state). |
Key Features
| Feature | Design Value |
|---|---|
| Asymmetrical RON architecture | 0.5Ω NC / 0.8Ω NO enables optimized power delivery and signal integrity for mismatched loads (e.g., 8Ω speaker vs. 32Ω headset). |
| Rail-to-rail analog signal handling | Supports input/output signals from GND to V+ without clipping - essential for full-scale audio and sensor interfaces. |
| Break-before-make timing (2ns) | Prevents momentary short-circuit between NO and NC paths during switching - critical for avoiding pop/click in audio systems. |
| Low THD (0.03%) | Minimizes harmonic generation in analog signal paths - meets fidelity requirements for consumer-grade audio playback. |
| 1.8V logic-compatible inputs | Accepts VIH ≥ 1.4V and VIL ≤ 0.5V with V+ = +2.7V to +3.3V - simplifies interface with ultra-low-voltage microcontrollers and baseband processors. |
Applications
| Speaker Headset Switching | MP3 Player Audio Routing |
|---|---|
Use Scenario: Dynamically selecting between internal loudspeaker and 3.5mm headset jack in portable media players. IC Role / Device Role / Timing Role: Dual SPDT analog switch controlling signal path direction and load isolation with break-before-make timing. Use Value: Eliminates mechanical relays; enables silent, glitch-free transitions using asymmetrical RON to match speaker (low-Z) and headset (higher-Z) impedances. | Use Scenario: Routing left/right audio channels between DAC output, amplifier stages, and output jacks in flash-based MP3 players. IC Role / Device Role / Timing Role: Low-distortion, bidirectional analog switch managing stereo signal flow under microcontroller logic control. Use Value: Maintains THD < 0.03% and −64dB off-isolation to prevent channel bleed and preserve stereo imaging fidelity. |
| Battery-Operated Equipment | Power Routing |
Use Scenario: Enabling/disabling peripheral sensors or communication modules in wearables and IoT edge nodes powered by coin cells or single Li-ion. IC Role / Device Role / Timing Role: Low-leakage (1nA max) analog switch isolating unused circuit blocks to extend battery life. Use Value: Reduces standby current to sub-nA levels while maintaining fast tON/tOFF (50ns/40ns) for responsive wake-up and power cycling. | Use Scenario: Selecting between primary and backup power sources (e.g., USB vs. battery) in portable medical monitors or handheld test equipment. IC Role / Device Role / Timing Role: High-current-capable (±300mA continuous) analog switch managing power domain routing with robust overvoltage tolerance. Use Value: Supports rail-to-rail operation up to +5.5V and withstands transient overvoltages via internal clamping diodes - no external protection required. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual SPDT analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4685EUB+ | Symmetrical RON: 0.8Ω max for both NC and NO switches at +2.7V; otherwise identical pinout, timing, and package. | Better suited for balanced dual-path applications (e.g., stereo line switching) where NC/NO loading is identical. | Select MAX4685EUB+ when symmetrical on-resistance is required; MAX4684EUB+ remains optimal for asymmetric speaker/headset load matching. |
| TMUX1574DBVR | Lower RON flatness (0.05Ω), higher supply range (+1.2V to +5.5V), but higher THD (0.05%) and no guaranteed 1.8V logic compatibility. | Targeted at ultra-low-voltage MCU interfaces and precision instrumentation, not consumer audio. | Choose TMUX1574DBVR only if sub-1.8V operation or tighter RON matching is mandatory; MAX4684EUB+ offers superior audio-grade THD and proven 1.8V logic support. |
Compared with MAX4685EUB+, the MAX4684EUB+ delivers lower NC-path resistance for primary load handling, while TMUX1574DBVR trades audio fidelity for broader voltage flexibility - making MAX4684EUB+ the preferred choice for battery-powered audio routing where low distortion and load-optimized RON are critical.
Availability
The MAX4684EUB+ is available at Aetrix Electronics and suitable for speaker headset switching, MP3 player audio routing, and battery-operated equipment requiring stable component supply and long-term industrial availability.
Supply support for MAX4684EUB+ 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, mixed-signal, and RF ICs for industrial, communications, computing, and consumer applications.
The MAX4684EUB+ belongs to Maxim's precision analog switch product line, engineered specifically for low-distortion, low-power audio and portable signal routing with stringent RON and timing specifications.
FAQ
What is the maximum continuous current rating for the MAX4684EUB+ analog switch terminals?
The MAX4684EUB+ supports ±300mA continuous current on NO_, NC_, and COM_ terminals. Peak current ratings are ±400mA (1ms, 50% duty cycle) and ±500mA (1ms, 10% duty cycle). These values are specified across the full operating temperature range (−40°C to +85°C) and must be observed to maintain reliability and avoid thermal runaway in the MAX4684EUB+.
Does the MAX4684EUB+ support rail-to-rail analog signal operation?
Yes, the MAX4684EUB+ supports rail-to-rail analog signal handling from GND to V+. Signals on NO_, NC_, and COM_ can swing across the full supply range without clipping or increased distortion, provided they remain within the absolute maximum ratings (−0.3V to V+ + 0.3V). This capability is confirmed in the Electrical Characteristics table and Typical Operating Characteristics plots for the MAX4684EUB+.
What is the logic voltage compatibility of the MAX4684EUB+ digital inputs?
The MAX4684EUB+ digital inputs (IN1, IN2) are 1.8V logic-compatible with VIH ≥ +1.4V and VIL ≤ +0.5V when V+ = +2.7V to +3.3V. Critically, these inputs tolerate up to +5.5V regardless of supply voltage - enabling direct interface with higher-voltage controllers without level shifters. This behavior is explicitly documented in the Digital I/O section of the MAX4684EUB+ datasheet.
How does the MAX4684EUB+ achieve low total harmonic distortion (THD)?
The MAX4684EUB+ achieves 0.03% THD through low RON (0.5Ω/0.8Ω), tight RON flatness (≤0.15Ω for NC), and symmetrical switch design that minimizes nonlinearities across the signal range. This performance is measured at RL = 600Ω, 2Vp-p, 20Hz–20kHz and is guaranteed across temperature - directly enabling high-fidelity audio routing in the MAX4684EUB+ without external compensation.
What package type is used for the MAX4684EUB+ and what are its key mechanical features?
The MAX4684EUB+ uses a 10-pin µMAX® package (3mm × 3mm), RoHS-compliant, with an exposed pad (EP) that must be soldered to GND for thermal dissipation and EMI suppression. Unlike the UCSP variant, the µMAX version has gull-wing leads for standard reflow assembly and is documented in package drawing U10-2. This package is distinct from the 12-bump UCSP and 10-pin TDFN variants of the MAX4684EUB+ family.
MAX4684EUB+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Switch Circuit:
- SPDT
- Multiplexer/Demultiplexer Circuit:
- 2:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 800mOhm
- Channel-to-Channel Matching (ΔRon):
- 60mOhm
- Voltage - Supply, Single (V+):
- 1.8V ~ 5.5V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 50ns, 30ns
- -3db Bandwidth:
- -
- Charge Injection:
- 200pC
- Channel Capacitance (CS(off), CD(off)):
- 84pF, 37pF
- Current - Leakage (IS(off)) (Max):
- 1nA
- Crosstalk:
- -68dB @ 100kHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-uMAX/uSOP
MAX4684EUB+ FAQ
1.How can I place an order for MAX4684EUB+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4684EUB+ 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 MAX4684EUB+ reliable?
The price and inventory of MAX4684EUB+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4684EUB+ is usually 5 days.
3.What payment methods are accepted for MAX4684EUB+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4684EUB+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4684EUB+?
MAX4684EUB+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4684EUB+ 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 MAX4684EUB+?
For technical support, including MAX4684EUB+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4684EUB+ requirements.
6.How does Aetrix verify that MAX4684EUB+ is sourced from the original manufacturer or authorized distributors?
All MAX4684EUB+ 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 MAX4684EUB+ meets industry standards.
7.What is the process for return or replacement of MAX4684EUB+?
All MAX4684EUB+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4684EUB+, 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 MAX4684EUB+ part is unused and in its original packaging.
Return procedure for MAX4684EUB+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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