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Analog Devices Inc./Maxim Integrated MAX4758ETX+T
- Part No.:
- MAX4758ETX+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 36-WFQFN Exposed Pad
- Datasheet:
-
MAX4758ETX+T.pdf
- Description:
- IC SWITCH DPDTX4 850MOHM 36TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,765
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Product details
Overview
MAX4758ETX+T from Maxim Integrated is a quad double-pole/double-throw (DPDT) analog switch IC designed for high-fidelity audio and low-distortion data signal routing in portable electronics. It features eight 0.5Ω on-resistance switches, rail-to-rail signal handling from +1.8V to +5.5V, and operates across –40°C to +85°C. Its 36-pin thin QFN (6mm × 6mm) package supports compact headset-swap and USB signal-switching applications.
For engineers reviewing the MAX4758ETX+T datasheet, MAX4758ETX+T pinout, MAX4758ETX+T application, or MAX4758ETX+T equivalent, this page delivers verified electrical specs, terminal-level design meaning, thermal and timing behavior under real supply conditions, and validated alternatives for audio/data multiplexing designs requiring <0.03% THD and sub-1ns skew control.
Technical Context
The MAX4758ETX+T implements eight independent DPDT analog switches controlled by four logic inputs (INA–IND), each pair sharing one control line. All switches are bidirectional CMOS transmission gates with guaranteed 0.5Ω on-resistance (V+ = 2.7V, ICOM = 10mA) and 0.2Ω flatness over 0–V+ signal range.
It supports rail-to-rail analog signals up to V+, handles ±300mA continuous current per channel, and achieves 50MHz on-channel bandwidth with –95dB off-isolation at 100kHz. Charge injection is limited to 50pC (typ), and turn-on/turn-off times are 150ns/60ns (max) at V+ = 2.7V with 35pF load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-resistance (RON) | 0.5Ω max at V+ = 2.7V, 10mA - ensures minimal insertion loss in audio paths and preserves SNR in line-level routing. |
| On-resistance flatness | 0.2Ω max - maintains consistent gain and frequency response across full analog input range (0V to V+). | Channel matching (ΔRON) | 0.1Ω max - enables precise stereo balance and differential signal integrity in dual-channel audio switching. |
| Total harmonic distortion | 0.03% typ at 20Hz–20kHz - meets high-end portable audio fidelity requirements without post-processing. |
| Supply voltage range | +1.8V to +5.5V - supports direct integration with Li-ion battery rails (3.0–4.2V) and 3.3V/5V system logic. |
| Operating temperature | –40°C to +85°C - qualified for industrial-grade handheld and automotive infotainment environments. |
| Turn-on time (tON) | 150ns max - enables fast audio path reconfiguration during call-state transitions in cellular handsets. |
Pinout & Package
MAX4758ETX+T uses a 36-pin thin QFN package (6mm × 6mm, 0.5mm pitch) with exposed thermal pad (EP) connected to GND. Pin numbering follows standard top-view orientation; EP improves thermal dissipation and reduces ground impedance.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | NC1 | Analog switch 1 normally closed terminal - connects to COM1 when INA = LOW; used for default audio path selection. |
| 2 | COM2 | Analog switch 2 common terminal - bidirectional node shared between NO2 and NC2; carries routed audio/data signal. |
| 4 | INA | Digital control input for switches 1 & 2 - TTL/CMOS-compatible; accepts up to +5.5V regardless of V+ supply level. |
| 5 | V+ | Positive supply rail - must be bypassed with 0.1µF capacitor to GND near pin to suppress switching noise coupling. |
| 23 | GND | Ground reference - all analog and digital returns converge here; low-impedance connection critical for THD performance. |
| 36 | COM1 | Analog switch 1 common terminal - primary signal entry/exit point for first DPDT pair; supports rail-to-rail swing. |
| EP | Exposed Pad | Thermal and electrical ground - must be soldered to PCB ground plane for thermal stability and EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail signal handling | Supports analog inputs from 0V to V+ without clipping - eliminates need for level-shifting in battery-powered audio systems. |
| 0.03% THD | Measured at 20Hz–20kHz, 1VP-P into 32Ω - preserves dynamic range and harmonic accuracy in headphone driver circuits. |
| 0.2Ω on-resistance flatness | Ensures <0.1dB gain variation across full audio band - critical for matched left/right channel performance in stereo switching. |
| Break-before-make timing | 2ns min - prevents momentary short-circuits during path transition, protecting downstream amplifiers and DACs. |
| Mixed-voltage logic inputs | IN_ pins tolerate up to +5.5V with V+ as low as +1.8V - simplifies interface with 5V microcontrollers in 3.3V systems. |
Applications
| Speaker-Headset Switching | Audio-Signal Routing |
|---|---|
|
Use Scenario: Seamless switching between built-in speaker and 3.5mm headset jack during voice calls on smartphones. IC Role / Device Role / Timing Role: Quad DPDT analog switch managing four independent audio paths (left/right speaker + left/right headset) with simultaneous mute/unmute control. Use Value: Enables zero-pop switching via break-before-make architecture and <0.03% THD, eliminating audible artifacts during call state transitions. |
Use Scenario: Dynamic reconfiguration of audio sources (e.g., Bluetooth codec, FM tuner, baseband processor) to shared amplifier or codec inputs. IC Role / Device Role / Timing Role: High-fidelity signal router selecting among multiple analog inputs while preserving wideband frequency response (50MHz BW) and low crosstalk (–100dB). Use Value: Maintains signal integrity across mixed-source audio systems without external buffering or gain compensation. |
| Cellular Phones | Notebook Computers |
|
Use Scenario: Dual-mic selection and speakerphone path management in LTE/5G handsets with space-constrained layouts. IC Role / Device Role / Timing Role: Low-on-resistance (0.5Ω), low-capacitance (284pF COM on-cap) switch enabling compact RF-adjacent audio routing without signal degradation. Use Value: Reduces PCB area vs. discrete MOSFET solutions while meeting stringent ESD (±2kV) and thermal (1221mW @ +70°C) requirements. |
Use Scenario: USB-C alternate mode audio accessory detection and analog audio path enablement in ultrabooks. IC Role / Device Role / Timing Role: Signal gate controlling headset presence detection and analog audio pass-through during USB-C plug insertion/removal sequences. Use Value: Supports hot-plug compliance with <150ns tON and rail-to-rail operation across 3.3V system rails, minimizing firmware intervention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4759ETX+T | Four 0.5Ω audio switches + four 25pF/0.2Ω data switches; includes 0.2ns skew spec for high-speed data routing. | Supports mixed audio/data routing (e.g., USB 2.0 + headset); MAX4758ETX+T lacks dedicated low-capacitance data channels. | Select MAX4759ETX+T when routing both audio and high-speed digital signals (e.g., USB D+/D–) on same IC; MAX4758ETX+T is optimized purely for audio fidelity. |
| TMUX1574RTWR | Quad SPDT (not DPDT); 0.75Ω RON, 3.6V max supply, –40°C to +125°C rating; no UCSP option. | Higher temp range suits automotive cabin modules; lacks DPDT topology needed for true headset/speaker swap without external relays. | Choose TMUX1574RTWR only for extended-temperature industrial applications where DPDT functionality is not required and 0.5Ω RON is negotiable. |
Compared with MAX4759ETX+T, MAX4758ETX+T delivers superior audio-specific performance (lower THD, tighter RON matching) but no data-switch capability; versus TMUX1574RTWR, it offers true DPDT topology and lower on-resistance essential for consumer audio path integrity.
Availability
MAX4758ETX+T is available at Aetrix Electronics and suitable for speaker-headset switching, portable audio routing, and cellular phone signal management requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MAX4758ETX+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) designs precision analog, mixed-signal, and power management ICs for demanding industrial, communications, and consumer applications.
The MAX4758ETX+T belongs to Maxim's high-performance analog switch product line, engineered specifically for low-distortion, low-noise audio signal routing in battery-powered portable devices.
FAQ
What is the maximum continuous current rating per channel for MAX4758ETX+T?
The MAX4758ETX+T supports ±300mA continuous current on all NO_, NC_, and COM_ terminals. This rating applies across the full operating temperature range (–40°C to +85°C) and ensures reliable operation in headphone driver and speaker output switching applications without thermal derating under typical bias conditions.
Does MAX4758ETX+T support rail-to-rail analog signal switching?
Yes, MAX4758ETX+T fully supports rail-to-rail analog signal handling from 0V to V+. Its CMOS switch architecture maintains low on-resistance and minimal distortion across the entire input voltage range, enabling direct interface with DAC outputs and amplifier inputs without level-shifting circuitry.
What is the typical total harmonic distortion (THD) performance of MAX4758ETX+T?
The MAX4758ETX+T delivers 0.03% typical THD at 20Hz–20kHz with 1VP-P signal into a 32Ω load. This specification is measured at V+ = 3V and TA = +25°C, and reflects its optimization for high-fidelity audio path switching in portable media devices.
Can MAX4758ETX+T be used with mixed-voltage logic control signals?
Yes, MAX4758ETX+T logic inputs (INA–IND) accept voltages up to +5.5V regardless of V+ supply level - for example, they can be driven directly by 5V microcontrollers even when V+ = 1.8V or 3.3V. This eliminates level-shifters in heterogeneous logic systems.
What package type and thermal characteristics does MAX4758ETX+T use?
MAX4758ETX+T uses a 36-pin thin QFN package (6mm × 6mm) with exposed thermal pad (EP). At TA = +70°C, its continuous power dissipation is 2105mW, with derating of 26.3mW/°C above that temperature - ensuring robust thermal performance in dense portable PCB layouts.
MAX4758ETX+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Circuit:
- DPDT
- Multiplexer/Demultiplexer Circuit:
- 2:2
- Number of Circuits:
- 4
- On-State Resistance (Max):
- 850mOhm
- Channel-to-Channel Matching (ΔRon):
- 100mOhm
- Voltage - Supply, Single (V+):
- 1.8V ~ 5.5V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 140ns, 50ns
- -3db Bandwidth:
- 50MHz
- Charge Injection:
- 40pC
- Channel Capacitance (CS(off), CD(off)):
- 180pF, 300pF
- Current - Leakage (IS(off)) (Max):
- 4nA
- Crosstalk:
- -90dB @ 100kHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 36-TQFN (6x6)
MAX4758ETX+T FAQ
1.How can I place an order for MAX4758ETX+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4758ETX+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 MAX4758ETX+T reliable?
The price and inventory of MAX4758ETX+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4758ETX+T is usually 5 days.
3.What payment methods are accepted for MAX4758ETX+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4758ETX+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4758ETX+T?
MAX4758ETX+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4758ETX+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 MAX4758ETX+T?
For technical support, including MAX4758ETX+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4758ETX+T requirements.
6.How does Aetrix verify that MAX4758ETX+T is sourced from the original manufacturer or authorized distributors?
All MAX4758ETX+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 MAX4758ETX+T meets industry standards.
7.What is the process for return or replacement of MAX4758ETX+T?
All MAX4758ETX+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4758ETX+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 MAX4758ETX+T part is unused and in its original packaging.
Return procedure for MAX4758ETX+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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