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Analog Devices Inc./Maxim Integrated MAX4684ETB-TG104
- Part No.:
- MAX4684ETB-TG104
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- -
- Datasheet:
-
MAX4684ETB-TG104.pdf
- Description:
- 0.5 OHM/0.8 OHM LOW VOLTAGE, DUA
- Quantity:
- Payment:
- Shipping:
Inventory:27,500
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Product details
Overview
The MAX4684ETB-TG104 from Maxim Integrated is a low-voltage, dual single-pole/double-throw (SPDT) analog switch optimized for battery-powered audio routing. It operates from +1.8V to +5.5V, delivers 0.5Ω max NC and 0.8Ω max NO on-resistance at +2.7V, and features 50ns turn-on/40ns turn-off times with break-before-make switching. It enables speaker/headset selection in portable MP3 players and cellular handsets.
For engineers reviewing the MAX4684ETB-TG104 datasheet, MAX4684ETB-TG104 pinout, MAX4684ETB-TG104 application, or MAX4684ETB-TG104 equivalent, key selection criteria include rail-to-rail signal handling, 1.8V logic compatibility, sub-1Ω on-resistance matching, low THD (0.03%), and UCSP-compatible thin QFN packaging for space-constrained PCBs.
Technical Context
The MAX4684ETB-TG104 implements two independent SPDT switches with asymmetrical on-resistance: NC path optimized at 0.5Ω max and NO path at 0.8Ω max under +2.7V supply. Its break-before-make timing ensures no signal shorting during state transitions, with 2ns delay between channel disable and enable.
It supports full rail-to-rail analog signal swing (GND to V+), bidirectional signal flow, and 1.8V logic-level digital inputs-even when powered from +3.3V. Charge injection is limited to 200pC, and off-isolation reaches –64dB at 100kHz, critical for high-fidelity audio path integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +1.8V to +5.5V single supply - enables direct integration into Li-ion (3.0–4.2V) and dual-cell alkaline (3.0V) systems without level shifting. |
| NC On-Resistance (max) | 0.5Ω at +2.7V - minimizes insertion loss and thermal drift in high-current NC paths like main speaker drivers. |
| NO On-Resistance (max) | 0.8Ω at +2.7V - balances low loss with process-matched asymmetry for headset detection and routing. |
| RON Match (max) | 0.06Ω between channels - ensures matched gain/attenuation across stereo or differential signal pairs. |
| Turn-On / Turn-Off Time | 50ns / 40ns at +3V - supports fast multiplexing in real-time audio switching and power routing applications. |
| THD | 0.03% at 20Hz–20kHz - preserves audio fidelity in line-level and headphone driver signal paths. |
| Off-Isolation | –64dB at 100kHz - suppresses crosstalk between active and inactive audio channels. |
Pinout & Package
The MAX4684ETB-TG104 is housed in a 10-pin thin QFN package (3mm × 3mm, 0.8mm height) with exposed thermal pad. Pin pitch is 0.5mm; footprint matches JEDEC MO-229 WEEA standard T1033-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (V+) | Positive supply input | Accepts +1.8V to +5.5V; must be applied before analog signals to prevent latch-up. |
| 2 (NO1) | Channel 1 normally open analog terminal | Connects to COM1 only when IN1 = logic high; used for auxiliary signal routing (e.g., headset mic). |
| 3 (NC1) | Channel 1 normally closed analog terminal | Connected to COM1 when IN1 = logic low; typically drives primary load (e.g., main speaker). |
| 4 (IN1) | Channel 1 digital control input | 1.8V logic compatible; accepts 0V–5.5V swing regardless of V+; inverts switch state (low = NC closed). |
| 5 (COM1) | Channel 1 common analog terminal | Bidirectional node; connects to source/load (e.g., codec output or amplifier input); handles rail-to-rail signals. |
| 6 (GND) | Ground reference | Must be low-impedance; ties internal substrate and thermal pad; critical for THD and leakage performance. |
| 7 (COM2) | Channel 2 common analog terminal | Independent of COM1; supports stereo or dual-path routing (e.g., left/right audio or power/ground switching). |
| 8 (IN2) | Channel 2 digital control input | Functionally identical to IN1; allows synchronous or independent control of second SPDT switch. |
| 9 (NC2) | Channel 2 normally closed analog terminal | Matches NC1 behavior; enables symmetrical dual-channel operation or redundant signal paths. |
| 10 (NO2) | Channel 2 normally open analog terminal | Matches NO1 behavior; completes dual SPDT functionality for full analog multiplexing capability. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail signal handling | Supports analog voltages from GND to V+ without clipping-enables direct interface with DACs, ADCs, and op-amps operating at supply rails. |
| Break-before-make switching | 2ns guaranteed delay prevents momentary shorting between NO and NC paths-essential for avoiding pop/click in audio outputs. |
| Asymmetrical RON (NC/NO) | 0.5Ω/0.8Ω max at +2.7V-optimized for applications where NC carries higher current (e.g., speaker) and NO handles lower-current paths (e.g., headset). |
| Low THD and crosstalk | 0.03% THD and –68dB crosstalk at 100kHz-preserves signal integrity in stereo audio, communication circuits, and precision sensor multiplexing. |
| 1.8V logic-compatible inputs | VIH = 1.4V, VIL = 0.5V-allows direct connection to 1.8V microcontrollers or FPGAs without external level shifters. |
Applications
| Speaker Headset Switching | MP3 Player Audio Routing |
|---|---|
|
Use Scenario: Automatic switching between built-in speaker and 3.5mm headset jack based on plug detection. IC Role / Device Role / Timing Role: Dual SPDT analog switch routing codec output to either speaker amplifier (NC path) or headphone driver (NO path). Use Value: 0.5Ω NC RON minimizes power loss in speaker path; 50ns switching enables glitch-free transition without audible artifacts. |
Use Scenario: Dynamic selection of stereo audio sources (e.g., FM radio, SD card playback, Bluetooth baseband) to a single DAC. IC Role / Device Role / Timing Role: Low-distortion analog multiplexer enabling source arbitration with <0.03% THD and –64dB off-isolation. Use Value: Rail-to-rail signal support preserves full dynamic range; 0.06Ω RON match ensures balanced left/right channel gain. |
| Cellular Phone Power Routing | Relay Replacement in Portable Equipment |
|
Use Scenario: Isolating battery voltage from peripheral modules (e.g., camera flash, GPS) during sleep mode to reduce quiescent current. IC Role / Device Role / Timing Role: Low-leakage (1nA max) SPDT switch controlling power domain enablement via GPIO-controlled NO/NC paths. Use Value: 50nA max supply current extends standby time; ±300mA continuous current rating supports moderate-power peripherals. |
Use Scenario: Replacing electromechanical relays in battery-operated test equipment for signal path configuration. IC Role / Device Role / Timing Role: Solid-state SPDT switch providing silent, bounce-free, and wear-free switching with 2ns break-before-make timing. Use Value: Eliminates relay coil drive circuitry; 3mm × 3mm QFN footprint reduces board area by >90% vs. typical miniature relay. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4685ETB+ | Symmetric 0.8Ω max RON on both NC and NO paths; RoHS-compliant lead-free finish. | Better suited for balanced dual-path designs (e.g., stereo line switching) where NC/NO symmetry is required. | Select MAX4685ETB+ when NC/NO resistance matching is critical and RoHS compliance is mandatory. |
| TMUX1574RTER | 0.5Ω max RON (symmetric), 1.08V–4.5V supply, –40°C to +125°C rating, 1.8V logic compatible. | Extended temperature range and automotive qualification make it suitable for industrial or automotive infotainment systems. | Choose TMUX1574RTER for designs requiring AEC-Q100 qualification or operation beyond +85°C ambient. |
Compared with MAX4684ETB-TG104, MAX4685ETB+ offers symmetric RON at the cost of NC-path optimization, while TMUX1574RTER provides wider temperature tolerance and automotive-grade reliability-but lacks the ultra-low 0.5Ω NC RON advantage for high-current speaker routing.
Availability
MAX4684ETB-TG104 is available at Aetrix Electronics and suitable for portable audio devices, battery-powered instrumentation, and consumer electronics requiring stable component supply, long-lifecycle support, and consistent parametric performance across production batches.
Supply support for MAX4684ETB-TG104 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 MAX4684 series belongs to Maxim's precision analog switch product line, designed specifically for low-voltage, low-distortion signal routing in space- and power-constrained portable electronics.
FAQ
What is the maximum supply voltage for MAX4684ETB-TG104?
The absolute maximum supply voltage for MAX4684ETB-TG104 is +6V, but the recommended operating range is +1.8V to +5.5V. Exceeding +6V may cause permanent damage. Operation at +5.5V is fully specified and maintains all key parameters including RON, tON/tOFF, and THD within datasheet limits. Always apply V+ before analog signals to avoid stress on internal ESD structures.
Does MAX4684ETB-TG104 support rail-to-rail analog signals?
Yes, MAX4684ETB-TG104 supports true rail-to-rail analog signal handling from GND to V+. This is confirmed in the Electrical Characteristics table and Typical Operating Characteristics plots, where RON remains stable across the full voltage range. The device maintains <0.15Ω RON flatness over 0V to V+, enabling distortion-free passage of signals such as audio waveforms and sensor outputs that swing near supply rails.
What is the logic polarity of the IN pins on MAX4684ETB-TG104?
The IN pins on MAX4684ETB-TG104 are active-low: a logic low (≤0.5V) connects the COM pin to the NC pin, and a logic high (≥1.4V) connects COM to NO. This is explicitly shown in the functional diagram and truth table. The logic inputs are 1.8V compatible and tolerate up to +5.5V regardless of V+, allowing direct interfacing with diverse microcontroller I/O standards without external level translation.
Can MAX4684ETB-TG104 be used in audio applications requiring low THD?
Yes, MAX4684ETB-TG104 is qualified for high-fidelity audio use with a specified THD of 0.03% at 20Hz–20kHz into 600Ω. This performance is achieved through low charge injection (200pC), matched RON (0.06Ω max), and low crosstalk (–68dB). These characteristics minimize harmonic generation and inter-channel interference-making MAX4684ETB-TG104 suitable for line-out, headphone, and speaker switching in MP3 players and smartphones.
What thermal considerations apply to the MAX4684ETB-TG104 QFN package?
MAX4684ETB-TG104 uses a 10-pin thin QFN with an exposed thermal pad. For reliable operation, the pad must be soldered to a dedicated PCB copper pour tied to GND. The datasheet specifies a maximum continuous power dissipation of 909mW at +70°C (derated 11.4mW/°C above). Thermal vias under the pad (6–8 x 0.3mm) are strongly recommended to maintain junction temperature below 125°C under worst-case 300mA load conditions.
MAX4684ETB-TG104 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- *
- Packaging:
- Bulk
- Product Status:
- Active
- Switch Circuit:
- -
- Multiplexer/Demultiplexer Circuit:
- -
- Number of Circuits:
- -
- On-State Resistance (Max):
- -
- Channel-to-Channel Matching (ΔRon):
- -
- Voltage - Supply, Single (V+):
- -
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- -
- -3db Bandwidth:
- -
- Charge Injection:
- -
- Channel Capacitance (CS(off), CD(off)):
- -
- Current - Leakage (IS(off)) (Max):
- -
- Crosstalk:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MAX4684ETB-TG104 FAQ
1.How can I place an order for MAX4684ETB-TG104 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4684ETB-TG104 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 MAX4684ETB-TG104 reliable?
The price and inventory of MAX4684ETB-TG104 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4684ETB-TG104 is usually 5 days.
3.What payment methods are accepted for MAX4684ETB-TG104?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4684ETB-TG104 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4684ETB-TG104?
MAX4684ETB-TG104 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4684ETB-TG104 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 MAX4684ETB-TG104?
For technical support, including MAX4684ETB-TG104 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4684ETB-TG104 requirements.
6.How does Aetrix verify that MAX4684ETB-TG104 is sourced from the original manufacturer or authorized distributors?
All MAX4684ETB-TG104 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 MAX4684ETB-TG104 meets industry standards.
7.What is the process for return or replacement of MAX4684ETB-TG104?
All MAX4684ETB-TG104 units undergo pre-shipment inspection (PSI). If there is an issue with MAX4684ETB-TG104, 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 MAX4684ETB-TG104 part is unused and in its original packaging.
Return procedure for MAX4684ETB-TG104:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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