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Analog Devices Inc./Maxim Integrated MAX4735ETE
- Part No.:
- MAX4735ETE
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
MAX4735ETE.pdf
- Description:
- IC SW SPDT-NO/NCX2 400MOHM 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:697
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Product details
Overview
MAX4735ETE from Maxim Integrated is a low-voltage, quad-SPDT analog switch optimized for audio signal routing in portable electronics. It delivers 0.31Ω typical on-resistance, 0.015Ω on-resistance matching, and <0.02% THD into 8Ω loads, enabling high-fidelity speaker switching in space-constrained designs.
For engineers reviewing the MAX4735ETE datasheet, MAX4735ETE pinout, MAX4735ETE application, or MAX4735ETE equivalent, key selection criteria include guaranteed RON and RON matching (design-verified only for MAX4735ETE), break-before-make timing, rail-to-rail analog signal range (0V to VCC), and TQFN-16 package compatibility with 1.6V–3.6V supply operation.
Technical Context
The MAX4735ETE implements four independent SPDT switches grouped into two control pairs: INA governs switches 1 and 2; INB governs switches 3 and 4. Each channel supports fully bidirectional, rail-to-rail analog signal routing with guaranteed break-before-make timing (2ns min) and 0.06Ω on-resistance flatness over 0–VCC.
It operates across -40°C to +85°C using a single 1.6V–3.6V supply, with digital inputs compatible down to 1.8V logic. Internal diode clamping protects NO/NC/COM pins against signals exceeding VCC or falling below GND, while leakage currents remain ≤100nA across temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (RON) | 0.31Ω typical at VCC = 2.7V, 100mA - enables <0.02% THD into 8Ω speakers without external buffering |
| RON Matching (∆RON) | 0.015Ω typical - ensures balanced channel gain in stereo or differential audio paths |
| Supply Voltage Range | 1.6V to 3.6V - supports direct integration with Li-ion battery rails and low-power SoC I/O |
| THD+N | 0.02% at 20Hz–20kHz into 8Ω - meets fidelity requirements for ringtone and melody IC interfaces |
| Turn-On/Off Time | 40ns/20ns typical - supports fast audio path reconfiguration without audible click/pop |
| Off-Isolation | -66dB at 100kHz - suppresses crosstalk between active and inactive audio channels |
| Logic Compatibility | 1.8V input threshold - allows direct interface with 1.8V GPIO without level shifters |
Pinout & Package
MAX4735ETE is packaged in a 16-pin, 3mm × 3mm × 0.8mm TQFN (package code T1633-4) with exposed paddle connected to GND for thermal and EMI performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (TQFN) | INA | Select Input A - controls COM1↔NO1/NC1 and COM2↔NO2/NC2 simultaneously |
| 2 (TQFN) | NC1 | Normally Closed Terminal, Switch 1 - connects to COM1 when INA = low |
| 3 (TQFN) | COM1 | Common Terminal, Switch 1 - bidirectional audio path hub for Switch 1 |
| 4 (TQFN) | NO1 | Normally Open Terminal, Switch 1 - connects to COM1 when INA = high |
| 5 (TQFN) | NC2 | Normally Closed Terminal, Switch 2 - connects to COM2 when INA = low |
| 6 (TQFN) | COM2 | Common Terminal, Switch 2 - bidirectional audio path hub for Switch 2 |
| 7 (TQFN) | NO2 | Normally Open Terminal, Switch 2 - connects to COM2 when INA = high |
| 8 (TQFN) | GND | Ground reference - also connects to exposed paddle for thermal dissipation |
| 9 (TQFN) | INB | Select Input B - controls COM3↔NO3/NC3 and COM4↔NO4/NC4 simultaneously |
| 10 (TQFN) | NO3 | Normally Open Terminal, Switch 3 - connects to COM3 when INB = high |
| 11 (TQFN) | COM3 | Common Terminal, Switch 3 - bidirectional audio path hub for Switch 3 |
| 12 (TQFN) | NC3 | Normally Closed Terminal, Switch 3 - connects to COM3 when INB = low |
| 13 (TQFN) | NO4 | Normally Open Terminal, Switch 4 - connects to COM4 when INB = high |
| 14 (TQFN) | COM4 | Common Terminal, Switch 4 - bidirectional audio path hub for Switch 4 |
| 15 (TQFN) | NC4 | Normally Closed Terminal, Switch 4 - connects to COM4 when INB = low |
| 16 (TQFN) | VCC | Positive power supply - bypass with 0.1µF ceramic capacitor near pin for stable audio performance |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed RON and ∆RON | Specified and design-verified exclusively for MAX4735ETE - eliminates need for post-production screening in audio-critical paths |
| Rail-to-rail analog signal range | 0V to VCC - supports full-swing audio signals without clipping or distortion in battery-powered systems |
| Break-before-make timing | 2ns minimum - prevents momentary short-circuits during audio path switching, eliminating audible artifacts |
| Low THD+N into 8Ω/32Ω | 0.02%/0.015% - meets consumer-grade audio fidelity requirements for speaker and headphone outputs |
| 1.8V logic-compatible inputs | VIH = 1.4V, VIL = 0.5V - enables direct connection to 1.8V microcontroller GPIO without level translation |
Applications
| Cell Phone Audio Routing | Digital Still Camera Speaker Switching |
|---|---|
|
Use Scenario: Dynamically routes ringtone, voice call, and media playback signals between internal speaker, earpiece, and headset jack. IC Role / Device Role / Timing Role: Quad-SPDT analog switch providing four independent audio path selections with break-before-make timing to prevent pop/click. Use Value: 0.31Ω RON minimizes insertion loss; 0.015Ω RON matching ensures stereo balance; TQFN-16 footprint saves PCB area in ultra-thin form factors. |
Use Scenario: Switches between built-in mono speaker and external stereo headphones during photo review or video playback. IC Role / Device Role / Timing Role: Dual DPDT-configured analog switch managing two independent audio output pairs with rail-to-rail signal handling. Use Value: 0.02% THD+N preserves audio clarity; 1.6V–3.6V operation matches camera SoC voltage rails; low 1µA supply current extends battery life. |
| MP3 Player Output Multiplexing | PDA Audio Path Selection |
|
Use Scenario: Selects between line-out, headphone amplifier, and internal speaker based on accessory detection and user settings. IC Role / Device Role / Timing Role: 8:4 multiplexer/demultiplexer formed by cascading all four SPDT sections to consolidate multiple analog outputs. Use Value: -66dB off-isolation prevents crosstalk between unused outputs; 20MHz bandwidth supports full audio spectrum without roll-off. |
Use Scenario: Routes audio codec output to either integrated speaker or 3.5mm jack depending on docking status and application context. IC Role / Device Role / Timing Role: Bidirectional analog switch enabling both multiplexing (codec → output) and demultiplexing (mic → codec) functions. Use Value: 0.06Ω RON flatness ensures consistent frequency response across signal amplitude; ±300mA continuous current handles peak speaker drive demands. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4735EUE | TSSOP-16 package (4.4mm × 5mm); higher θJA (106°C/W); same electrical specs | Preferred where manual soldering or legacy board layouts require SOIC-compatible footprint | Choose MAX4735EUE if TQFN assembly infrastructure is unavailable or thermal budget permits larger package |
| TS5A23157DCUR | 0.9Ω RON; 2-channel SPDT; 1.65V–5.5V supply; no guaranteed RON matching spec | Suitable for non-audio general-purpose switching where THD and channel matching are not critical | Choose TS5A23157DCUR only for cost-sensitive, non-fidelity applications - not a drop-in replacement for MAX4735ETE audio paths |
Compared with MAX4735EUE, the MAX4735ETE offers superior thermal performance (64°C/W vs. 106°C/W) and 38% smaller PCB area; compared with TS5A23157DCUR, it provides 3× lower RON, guaranteed matching, and proven THD performance essential for portable audio.
Availability
MAX4735ETE is available at Aetrix Electronics and suitable for cell phone audio routing, digital still camera speaker switching, and MP3 player output multiplexing requiring stable component supply across production lifecycles.
Supply support for MAX4735ETE 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, medical, and portable applications.
The MAX4735 product line targets low-voltage, high-fidelity audio signal routing in battery-powered devices, emphasizing ultra-low on-resistance, tight matching, and minimal distortion in compact packages.
FAQ
What is the guaranteed RON matching specification for MAX4735ETE?
The MAX4735ETE guarantees 0.015Ω on-resistance matching (∆RON) across its four SPDT channels at VCC = 2.7V and TA = +25°C, with 0.03Ω max over -40°C to +85°C. This specification is explicitly design-verified only for the MAX4735ETE variant per Note 3 in the datasheet - other variants like MAX4735EUE do not carry this guarantee.
Can MAX4735ETE drive an 8Ω speaker directly?
Yes, the MAX4735ETE can drive an 8Ω speaker directly with <0.02% THD+N at 20Hz–20kHz, provided peak signal amplitude stays within ±2.3VRMS to avoid exceeding the 400mA peak current rating at 50% duty cycle. Its 0.31Ω typical RON ensures minimal insertion loss and thermal rise under continuous load.
What is the function of the exposed paddle on the MAX4735ETE TQFN package?
The exposed paddle on the MAX4735ETE TQFN package must be connected to GND. It serves dual purposes: improving thermal dissipation (enabling 1.25W power handling at +70°C) and reducing ground impedance for cleaner audio signal return paths - critical for maintaining low THD+N and minimizing crosstalk in sensitive analog circuits.
Does MAX4735ETE support rail-to-rail analog signal switching?
Yes, the MAX4735ETE supports true rail-to-rail analog signal switching from 0V to VCC. Its CMOS switch architecture allows signals spanning the full supply range without clipping or distortion, making it suitable for AC-coupled and DC-coupled audio paths in portable systems operating from 1.6V to 3.6V supplies.
How does break-before-make timing prevent audio artifacts in MAX4735ETE?
The MAX4735ETE guarantees ≥2ns break-before-make timing between switch transitions, ensuring no momentary short-circuit occurs when changing audio paths. This eliminates audible pop/click transients during dynamic speaker or headset switching - a critical requirement verified in typical application circuits driving 8Ω or 32Ω loads.
MAX4735ETE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Switch Circuit:
- SPDT
- Multiplexer/Demultiplexer Circuit:
- 4:2
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 400mOhm
- Channel-to-Channel Matching (ΔRon):
- 15mOhm
- Voltage - Supply, Single (V+):
- 1.6V ~ 3.6V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 200ns, 180ns
- -3db Bandwidth:
- 20MHz
- Charge Injection:
- 100pC
- Channel Capacitance (CS(off), CD(off)):
- 70pF
- Current - Leakage (IS(off)) (Max):
- 20nA
- Crosstalk:
- -86dB @ 100kHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TQFN-EP (3x3)
MAX4735ETE FAQ
1.How can I place an order for MAX4735ETE through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4735ETE 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 MAX4735ETE reliable?
The price and inventory of MAX4735ETE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4735ETE is usually 5 days.
3.What payment methods are accepted for MAX4735ETE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4735ETE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4735ETE?
MAX4735ETE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4735ETE 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 MAX4735ETE?
For technical support, including MAX4735ETE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4735ETE requirements.
6.How does Aetrix verify that MAX4735ETE is sourced from the original manufacturer or authorized distributors?
All MAX4735ETE 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 MAX4735ETE meets industry standards.
7.What is the process for return or replacement of MAX4735ETE?
All MAX4735ETE units undergo pre-shipment inspection (PSI). If there is an issue with MAX4735ETE, 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 MAX4735ETE part is unused and in its original packaging.
Return procedure for MAX4735ETE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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