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Analog Devices Inc./Maxim Integrated MAX4684EBC+T
- Part No.:
- MAX4684EBC+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 12-WFBGA, CSPBGA
- Datasheet:
-
MAX4684EBC+T.pdf
- Description:
- IC SWITCH SPDTX2 800MOHM 12UCSP
- Quantity:
- Payment:
- Shipping:
Inventory:4,975
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Product details
Overview
MAX4684EBC+T from Maxim Integrated is a dual SPDT analog switch IC designed for low-voltage signal routing in portable audio and power management systems. It delivers 0.5Ω max NC on-resistance and 0.8Ω max NO on-resistance at +2.7V supply, 50ns turn-on time, and rail-to-rail analog signal handling - enabling high-fidelity speaker/headset switching in battery-powered devices.
For engineers reviewing the MAX4684EBC+T datasheet, MAX4684EBC+T pinout, MAX4684EBC+T application, or MAX4684EBC+T equivalent, this page provides verified package mapping (12-bump UCSP), confirmed break-before-make timing (2ns), leakage specs (±1nA at +25°C), THD (0.03%), and real-world audio/power routing use cases - all extracted from Maxim's official datasheet Rev 5 (10/19).
Technical Context
The MAX4684EBC+T 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, supporting mismatched load requirements in headset/audio paths. Its BiCMOS process enables 1.8V–5.5V single-supply operation and 1.8V logic-compatible digital inputs.
It features true break-before-make switching (2ns delay), 0.06Ω max RON match between channels, and flat on-resistance (0.15Ω max variation over full signal range), ensuring minimal distortion in bidirectional audio and DC-coupled signal routing applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +1.8V to +5.5V - supports direct integration with Li-ion, 3.3V, and 5V system rails without level shifters. |
| NC On-Resistance (max) | 0.5Ω at +2.7V - enables low-loss connection for primary audio path (e.g., internal speaker). |
| NO On-Resistance (max) | 0.8Ω at +2.7V - optimized for secondary path (e.g., headset jack) where slightly higher loss is acceptable. |
| Turn-On / Turn-Off Time | 50ns / 40ns at +3V - ensures fast channel selection without audible pop/click in audio switching. |
| THD | 0.03% - preserves audio fidelity in line-level and headphone drive applications. |
| Off-Isolation | -64dB at 100kHz - suppresses crosstalk between active and inactive signal paths. |
| Leakage Current (max) | ±1nA at +25°C - minimizes DC error in precision sensor or battery-monitoring signal chains. |
Pinout & Package
MAX4684EBC+T uses a 12-bump, 0.5mm-pitch wafer-level chip-scale package (UCSP), occupying only 2.0mm × 1.50mm PCB area. The package has no leads; solder bumps serve as terminals and require JEDEC-compliant IR/vapor-phase reflow (preheating mandatory; hand/wave soldering prohibited).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1, C1 | NC1, NC2 | Normally closed analog terminals - connect to default signal paths (e.g., main speaker) when control input is low. |
| A2, C2 | IN1, IN2 | Digital control inputs - 1.8V logic-compatible; accept up to +5.5V regardless of V+, enabling direct MCU interface. |
| A3, C3 | COM1, COM2 | Common analog terminals - bidirectional I/O nodes routing signals between NC/NO paths; support rail-to-rail voltage swing. |
| A4, C4 | NO1, NO2 | Normally open analog terminals - activate alternate paths (e.g., headset) when corresponding IN is high. |
| B4 | V+ | Positive supply input - powers both analog and digital sections; must be applied before analog signals to prevent latch-up. |
| B1 | GND | Analog/digital ground reference - shared return for all channels; requires low-impedance PCB connection. |
Key Features
| Feature | Design Value |
|---|---|
| Asymmetrical RON | 0.5Ω (NC) / 0.8Ω (NO) - matches differential load requirements in speaker/headset dual-path architectures. |
| RON Match Between Channels | 0.06Ω max - ensures consistent gain/attenuation across dual-channel audio or sensor multiplexing. |
| RON Flatness Over Signal Range | 0.15Ω max - maintains linear signal transfer from GND to V+, critical for DC-coupled audio and precision analog routing. |
| Low Charge Injection | 200pC - reduces glitch-induced pop noise during switching in headphone amplifiers. |
| 1.8V Logic Compatibility | VIH = 1.4V, VIL = 0.5V - allows direct interface with ultra-low-power microcontrollers (e.g., ARM Cortex-M0+) without external level shifters. |
Applications
| Speaker Headset Switching | MP3 Player Audio Routing |
|---|---|
Use Scenario: Seamless switching between built-in speaker and 3.5mm headset jack in portable media players. IC Role / Device Role / Timing Role: Dual SPDT analog switch managing two independent audio paths with break-before-make to eliminate click/pop. Use Value: Asymmetrical RON (0.5Ω NC / 0.8Ω NO) optimizes power delivery to speaker while maintaining acceptable loss to headset. |
Use Scenario: Dynamic routing of stereo DAC output to either line-out or headphone amplifier in compact MP3 players. IC Role / Device Role / Timing Role: Low-distortion signal router with 0.03% THD and rail-to-rail capability preserving audio dynamic range. Use Value: 50ns tON/40ns tOFF enables sub-millisecond channel changes synchronized with UI events. |
| Power Routing in Wearables | Battery-Operated Equipment |
Use Scenario: Selecting between primary Li-ion battery and backup coin cell in fitness trackers during low-power mode transitions. IC Role / Device Role / Timing Role: Low-leakage (±1nA) power path switch enabling µA-level standby current preservation. Use Value: 0.5Ω NC path minimizes voltage drop in main power rail; UCSP footprint saves space in constrained wearable PCBs. |
Use Scenario: Managing multiple peripheral interfaces (USB, SD card, sensors) in handheld test equipment powered by rechargeable batteries. IC Role / Device Role / Timing Role: Bidirectional analog switch isolating unused signal lines to reduce system-wide leakage and noise coupling. Use Value: -64dB off-isolation and -68dB crosstalk prevent interference between sensitive analog and noisy digital subsystems. |
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 |
|---|---|---|---|
| MAX4685EBC+T | 0.8Ω max RON for both NC and NO paths - symmetrical resistance vs. MAX4684EBC+T's asymmetry. | Better suited for balanced dual-path applications (e.g., stereo channel swapping) where matched RON is required. | Select MAX4685EBC+T when NC/NO load impedances are identical; MAX4684EBC+T remains optimal for speaker/headset asymmetry. |
| TMUX1574RTER | 0.5Ω typical RON (both paths), 1.08V–4.5V supply, ±100nA leakage - wider voltage range but higher leakage than MAX4684EBC+T. | Targeted at industrial I/O modules requiring extended supply range; lacks UCSP footprint and 1.8V logic compatibility. | Choose TMUX1574RTER for 1.08V–4.5V systems needing lower RON tolerance; MAX4684EBC+T preferred for ultra-low-leakage, space-constrained portable designs. |
Compared with MAX4685EBC+T and TMUX1574RTER, the MAX4684EBC+T uniquely combines asymmetrical RON, 1.8V logic compatibility, 2.0mm × 1.50mm UCSP packaging, and ±1nA leakage - making it the only option optimized for high-fidelity, low-power headset switching in space-limited consumer audio devices.
Availability
MAX4684EBC+T is available at Aetrix Electronics and suitable for speaker headset switching, MP3 player audio routing, and battery-operated equipment requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX4684EBC+T 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 MAX4684EBC+T belongs to Maxim's low-voltage analog switch product line, engineered specifically for space-constrained, battery-powered audio and signal routing applications demanding ultra-low on-resistance and minimal distortion.
FAQ
What is the maximum supply voltage rating for MAX4684EBC+T?
The MAX4684EBC+T has an absolute maximum supply voltage (V+) of +6V, but its specified operating range is +1.8V to +5.5V. Operation above +5.5V risks permanent damage, and the device is fully characterized only within the 1.8V–5.5V range per Maxim's datasheet Rev 5. Always observe proper power sequencing - apply V+ before analog signals - to avoid latch-up or overstress conditions in the MAX4684EBC+T.
Does MAX4684EBC+T support rail-to-rail analog signal operation?
Yes, the MAX4684EBC+T supports rail-to-rail analog signal handling: signals on NO_, NC_, and COM_ pins can swing from GND to V+ without clipping or significant RON degradation. This is confirmed in the datasheet's "Analog Signal Range" specification (0 to V+) and validated by RON flatness data (0.15Ω max variation over full range). The feature enables direct interfacing with DACs, ADCs, and op-amps operating at the same supply rail in the MAX4684EBC+T application.
What is the logic voltage compatibility of MAX4684EBC+T digital inputs?
The MAX4684EBC+T digital inputs (IN1, IN2) are 1.8V logic-compatible with VIH = +1.4V (min) and VIL = +0.5V (max) when V+ is +2.7V to +3.3V. Critically, they tolerate up to +5.5V regardless of supply voltage - allowing direct connection to 5V GPIOs without level shifters. This dual-voltage tolerance is explicitly guaranteed in the "Digital I/O" section of the MAX4684EBC+T datasheet and applies to all operating conditions.
How does the UCSP package of MAX4684EBC+T affect PCB assembly?
The MAX4684EBC+T uses a 12-bump UCSP package requiring JEDEC J-STD-020A-compliant infrared or vapor-phase reflow with preheating; hand or wave soldering is prohibited. Bump temperature limits are +220°C (IR, 15s) and +215°C (vapor phase, 60s). PCB layout must follow Maxim's land pattern guidelines (document 21-0104), and mechanical stress management is critical due to direct die-to-board attachment. These constraints are defined in the MAX4684EBC+T package notes and reliability section.
What is the typical total harmonic distortion (THD) performance of MAX4684EBC+T?
The MAX4684EBC+T delivers 0.03% THD (typical) under standard test conditions: RL = 600Ω, input = 2Vp-p, frequency = 20Hz–20kHz, at +25°C. This value is measured and guaranteed in the "Dynamic Characteristics" table of the official datasheet and reflects the device's suitability for high-fidelity audio routing. THD remains stable across temperature and supply voltage variations, as shown in Figure MAX4684/5 toc18 of the MAX4684EBC+T datasheet.
MAX4684EBC+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- 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:
- 12-UCSP
MAX4684EBC+T FAQ
1.How can I place an order for MAX4684EBC+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4684EBC+T 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 MAX4684EBC+T reliable?
The price and inventory of MAX4684EBC+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4684EBC+T is usually 5 days.
3.What payment methods are accepted for MAX4684EBC+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4684EBC+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4684EBC+T?
MAX4684EBC+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4684EBC+T 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 MAX4684EBC+T?
For technical support, including MAX4684EBC+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4684EBC+T requirements.
6.How does Aetrix verify that MAX4684EBC+T is sourced from the original manufacturer or authorized distributors?
All MAX4684EBC+T 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 MAX4684EBC+T meets industry standards.
7.What is the process for return or replacement of MAX4684EBC+T?
All MAX4684EBC+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4684EBC+T, 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 MAX4684EBC+T part is unused and in its original packaging.
Return procedure for MAX4684EBC+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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