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Analog Devices Inc./Maxim Integrated MAX4684ETB+G104
- Part No.:
- MAX4684ETB+G104
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- -
- Datasheet:
-
MAX4684ETB+G104.pdf
- Description:
- INTEGRATED CIRCUIT
- Quantity:
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Product details
Overview
MAX4684ETB+G104 from Maxim Integrated is a low-voltage, dual SPDT analog switch IC with 0.5Ω (max) NC-channel on-resistance and 0.8Ω (max) NO-channel on-resistance at +2.7V supply, break-before-make switching (2ns), 50ns turn-on time, and rail-to-rail signal handling - designed for speaker/headset routing and power path control in portable audio systems.
For engineers reviewing the MAX4684ETB+G104 datasheet, MAX4684ETB+G104 pinout, MAX4684ETB+G104 application, or MAX4684ETB+G104 equivalent, key selection criteria include its 10-pin TDFN-EP package with exposed pad, 1.8V–5.5V single-supply operation, 1.8V logic compatibility, and channel-matched RON (≤0.06Ω) for precision signal routing in battery-powered equipment.
Technical Context
The MAX4684ETB+G104 implements two independent SPDT analog switches with asymmetrical RON (NC ≤0.5Ω, NO ≤0.8Ω at +2.7V), enabling optimized load matching in headset/speaker applications. Its BiCMOS process ensures low charge injection (200pC max) and high off-isolation (−64dB at 100kHz).
Break-before-make timing (2ns min) prevents signal shorting during state transitions, while tON/tOFF of 50ns/40ns at +3V supports fast multiplexing in audio and communications circuits. Digital inputs tolerate up to +5.5V regardless of V+, simplifying interface with mixed-voltage controllers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +1.8V to +5.5V - enables direct integration with Li-ion battery (3.0–4.2V) and 1.8V/3.3V logic domains |
| NC Channel RON (max) | 0.5Ω at +2.7V - minimizes insertion loss in critical audio return paths (e.g., headset ground switching) |
| NO Channel RON (max) | 0.8Ω at +2.7V - balances low distortion and thermal performance for speaker driver outputs |
| RON Match (ΔRON) | ≤0.06Ω between channels - ensures matched gain/attenuation in differential or stereo signal paths |
| Turn-On / Turn-Off Time | 50ns / 40ns at +3V - supports >10MHz switching rates for digital audio sample routing |
| Off-Isolation | −64dB at 100kHz - suppresses crosstalk between active and inactive audio channels |
| Logic Compatibility | 1.8V input thresholds (VIL = 0.5V, VIH = 1.4V) - interoperable with modern ultra-low-power microcontrollers |
Pinout & Package
MAX4684ETB+G104 uses a 10-pin TDFN-EP package (3mm × 3mm) with exposed pad connected to GND for thermal and EMI performance. The package is RoHS-compliant and requires JEDEC J-STD-020A reflow profile.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1, IN2 | Digital control inputs | Invert logic sense: low = NC closed, high = NO closed; tolerate up to +5.5V independent of V+ |
| COM1, COM2 | Analog common terminals | Bidirectional signal ports - accept rail-to-rail inputs (0V to V+) and drive loads up to ±300mA continuous |
| NO1, NO2 | Normally open analog terminals | Connect to signal source when INx = high; RON ≤0.8Ω ensures minimal THD (0.03%) in audio paths |
| NC1, NC2 | Normally closed analog terminals | Default connection path when INx = low; lower RON (≤0.5Ω) reduces DC drop in headset ground return |
| V+ | Positive supply input | Single power rail for analog and digital sections; must be applied before analog signals to prevent latch-up |
| GND | Ground reference | Reference for all analog signals and digital logic; EP must be soldered to GND plane for thermal stability |
Key Features
| Feature | Design Value |
|---|---|
| Asymmetrical RON architecture | Optimizes NC/NO paths separately - 0.5Ω NC enables low-loss headset detection, 0.8Ω NO maintains linearity for speaker drivers |
| Rail-to-rail analog signal handling | Supports full V+ to GND swing without clipping - essential for unbuffered audio and battery-monitoring signals |
| Break-before-make switching | 2ns minimum delay prevents momentary short-circuit between NC and NO paths during transition |
| Low charge injection (200pC max) | Minimizes voltage glitches on high-impedance nodes - critical for precision sensor or microphone bias networks |
| Ultra-low leakage (1nA max at +25°C) | Preserves signal integrity in high-Z medical or instrumentation front-ends where leakage induces offset errors |
Applications
| Speaker Headset Switching | MP3 Player Audio Routing |
|---|---|
Use Scenario: Automatically route audio output between internal speaker and 3.5mm headset jack based on plug detection. IC Role / Device Role / Timing Role: Dual SPDT analog switch controlling ground return (NC) and signal path (NO) per channel with break-before-make to avoid pop/click. Use Value: 0.5Ω NC RON minimizes DC resistance in headset ground loop, reducing hum; 0.8Ω NO RON preserves THD <0.03% across 20Hz–20kHz. |
Use Scenario: Select between DAC output, line-in, and microphone input in portable media players with shared ADC/DAC resources. IC Role / Device Role / Timing Role: Low-capacitance (37pF NOOFF) analog multiplexer enabling fast channel switching without signal degradation. Use Value: −68dB crosstalk at 100kHz prevents audible bleed between playback and record paths; 50ns tON supports real-time audio stream arbitration. |
| Power Path Management | Cellular Phone Battery Monitoring |
Use Scenario: Route charging current from USB or wall adapter to battery while isolating backup power sources during fault conditions. IC Role / Device Role / Timing Role: High-current analog switch (±300mA continuous) with overvoltage-tolerant control pins enabling safe hot-swap operation. Use Value: 1.8V–5.5V supply range matches Li-ion battery voltage; 0.5Ω RON limits power loss to <15mW at 150mA, reducing thermal stress. |
Use Scenario: Isolate battery voltage sensing circuitry from noisy RF/baseband sections during cellular transmission bursts. IC Role / Device Role / Timing Role: Low-leakage (1nA max) analog switch decoupling precision ADC reference from transient-loaded system rails. Use Value: 1nA leakage introduces <1µV error in 1MΩ sense network - maintains ±0.5% battery SOC accuracy under dynamic load conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4685ETB+T | Symmetric RON: 0.8Ω max for both NC and NO channels at +2.7V; identical package and timing specs | Preferred for balanced dual-path designs (e.g., stereo line-level switching) where NC/NO symmetry simplifies layout | Select MAX4685ETB+T when NC/NO RON matching is required across both channels - not a drop-in replacement due to different RON asymmetry |
| TMUX1574RTER | Higher RON (1.3Ω typ), wider supply (1.08V–5.5V), no UCSP/TDFN option - offered in 10-pin WQFN only | Targets ultra-low-voltage IoT sensors (<1.2V logic); lacks MAX4684's 0.5Ω NC optimization for audio ground paths | Choose TMUX1574RTER only if sub-1.2V operation is mandatory; otherwise MAX4684ETB+G104 delivers superior audio performance and thermal efficiency |
Compared with MAX4685ETB+T and TMUX1574RTER, MAX4684ETB+G104 uniquely delivers 0.5Ω NC RON for minimized ground-path loss in headset detection, while maintaining 50ns switching speed and 1.8V logic compatibility - making it optimal for portable audio power routing where asymmetrical load requirements exist.
Availability
MAX4684ETB+G104 is available at Aetrix Electronics and suitable for speaker headset switching, MP3 player audio routing, and power path management requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX4684ETB+G104 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, automotive, and consumer applications.
The MAX4684ETB+G104 belongs to Maxim's low-voltage analog switch product line, engineered specifically for high-fidelity audio routing and battery-efficient power path control in space-constrained portable devices.
FAQ
What is the maximum continuous current rating for the MAX4684ETB+G104 analog switches?
The MAX4684ETB+G104 supports ±300mA continuous current through its NO_, NC_, and COM_ terminals. This rating applies across the full operating temperature range (−40°C to +85°C) and enables direct use in speaker driver and battery charge path applications without external current-limiting components. Exceeding this limit risks thermal damage or parametric shift in RON.
Does the MAX4684ETB+G104 require separate logic and analog supplies?
No - the MAX4684ETB+G104 operates from a single +1.8V to +5.5V supply (V+) for both analog signal handling and digital control logic. Its 1.8V-compatible inputs (VIL = 0.5V, VIH = 1.4V) allow direct interfacing with 1.8V or 3.3V microcontrollers without level-shifting. This simplifies power architecture in compact portable designs.
How does the break-before-make timing of the MAX4684ETB+G104 prevent signal corruption?
The MAX4684ETB+G104 guarantees a minimum 2ns break interval between NC and NO path disconnection and reconnection. This eliminates momentary short-circuits during switching - critical in audio applications where even nanosecond shorts cause audible pops or damage sensitive transducers. Measured tBBM is 2ns at +2.7V with 50Ω/35pF load.
Can the MAX4684ETB+G104 handle analog signals exceeding the V+ supply rail?
No - the MAX4684ETB+G104 specifies an absolute maximum analog signal range of −0.3V to (V+ + 0.3V). Signals beyond this range forward-bias internal ESD diodes, risking latch-up or permanent damage. For overvoltage-tolerant operation, external clamping diodes (as shown in Figure 1 of the datasheet) must be added - reducing usable analog range by ~0.7V.
What is the thermal significance of the exposed pad (EP) on the MAX4684ETB+G104 TDFN package?
The exposed pad on the MAX4684ETB+G104 must be soldered to a GND-connected copper plane to achieve rated thermal performance. With proper PCB layout (≥200mm² thermal pad area), the 10-pin TDFN-EP achieves 1482mW continuous power dissipation at +70°C ambient. Omitting EP connection degrades thermal resistance by >40%, risking RON drift and premature failure under sustained 300mA load.
MAX4684ETB+G104 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- 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+G104 FAQ
1.How can I place an order for MAX4684ETB+G104 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4684ETB+G104 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+G104 reliable?
The price and inventory of MAX4684ETB+G104 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4684ETB+G104 is usually 5 days.
3.What payment methods are accepted for MAX4684ETB+G104?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4684ETB+G104 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4684ETB+G104?
MAX4684ETB+G104 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4684ETB+G104 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+G104?
For technical support, including MAX4684ETB+G104 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4684ETB+G104 requirements.
6.How does Aetrix verify that MAX4684ETB+G104 is sourced from the original manufacturer or authorized distributors?
All MAX4684ETB+G104 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+G104 meets industry standards.
7.What is the process for return or replacement of MAX4684ETB+G104?
All MAX4684ETB+G104 units undergo pre-shipment inspection (PSI). If there is an issue with MAX4684ETB+G104, 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+G104 part is unused and in its original packaging.
Return procedure for MAX4684ETB+G104:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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