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Analog Devices Inc./Maxim Integrated MAX4736ETC+
- Part No.:
- MAX4736ETC+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 12-WFQFN Exposed Pad
- Datasheet:
-
MAX4736ETC+.pdf
- Description:
- IC SWITCH SPDTX2 800MOHM 12TQFN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
The MAX4736ETC+ from Maxim Integrated is a low-voltage, dual SPDT analog switch operating from a single 1.6V to 4.2V supply, featuring 0.6Ω typical on-resistance (at 3V), 25ns turn-on time, break-before-make switching, and rail-to-rail analog signal handling-designed for precision signal routing in battery-powered cellular phones and audio systems.
For engineers reviewing the MAX4736ETC+ datasheet, MAX4736ETC+ pinout, MAX4736ETC+ application, or MAX4736ETC+ equivalent, this device supports high-fidelity, low-distortion switching in space-constrained portable electronics where low quiescent power (<4μW) and 1.8V CMOS logic compatibility are critical selection criteria.
Technical Context
The MAX4736ETC+ implements two independent CMOS-based SPDT switches with break-before-make timing (5ns typical), enabling safe signal path reconfiguration without momentary shorting. Each switch features separate digital control inputs (IN1/IN2) and bidirectional analog paths between COM, NO, and NC terminals.
Its architecture supports rail-to-rail analog signals (0V to V+) with minimal RON variation (0.05Ω flatness at 3V), low charge injection (60pC), and high off-isolation (–52dB at 1MHz), making it suitable for low-noise data-acquisition and communications circuits requiring minimal signal corruption.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.6V to 4.2V - enables direct integration into Li-ion battery-powered systems (2.7–4.2V) and 1.8V logic domains. |
| On-Resistance (RON) | 0.6Ω typ at 3V - minimizes voltage drop and power loss in high-current analog paths (±300mA continuous). |
| RON Matching | 0.1Ω max at 3V - ensures matched gain/attenuation across dual channels in differential or stereo signal routing. |
| Switching Speed | tON = 25ns, tOFF = 20ns - supports high-speed multiplexing in audio DAC outputs and modem baseband interfaces. |
| Logic Compatibility | 1.8V CMOS input threshold at 3V supply - allows direct interfacing with 1.8V microcontrollers without level shifters. |
| Off-Isolation | –52dB at 1MHz - suppresses crosstalk between active and inactive signal paths in multi-channel audio/video routing. |
| Charge Injection | 60pC - limits DC offset error in precision ADC front-ends and sample-hold circuits. |
Pinout & Package
MAX4736ETC+ uses a 12-pin TQFN package (3mm × 3mm) with exposed pad connected to GND for thermal and noise performance. Pin numbering follows top-view orientation per Maxim's standard TQFN outline.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN1) | Digital Control Input - Switch 1 | Active-high logic input controlling connection between COM1 and NO1 or NC1. |
| 2 (COM1) | Analog Common Terminal - Switch 1 | Bidirectional signal port; connects to either NO1 or NC1 based on IN1 state. |
| 3 (N.C.) | No Connection | Unbonded pin; must be left floating or tied to GND per layout best practice. |
| 4 (NC1) | Analog Normally Closed Terminal - Switch 1 | Connected to COM1 when IN1 = LOW; open when IN1 = HIGH. |
| 5 (V+) | Positive Supply Input | Single supply rail (1.6–4.2V); powers internal CMOS switch array and logic interface. |
| 6 (NC2) | Analog Normally Closed Terminal - Switch 2 | Connected to COM2 when IN2 = LOW; open when IN2 = HIGH. |
| 7 (IN2) | Digital Control Input - Switch 2 | Independent active-high logic input for second SPDT switch. |
| 8 (COM2) | Analog Common Terminal - Switch 2 | Bidirectional signal port for second independent analog path. |
| 9 (NO1) | Analog Normally Open Terminal - Switch 1 | Connected to COM1 only when IN1 = HIGH; isolated otherwise. |
| 10 (NO2) | Analog Normally Open Terminal - Switch 2 | Connected to COM2 only when IN2 = HIGH; isolated otherwise. |
| 11 (GND) | Ground Reference | Primary return path for analog signals and supply current; connects to exposed pad. |
| EP (Exposed Pad) | Thermal & Electrical Ground | Must be soldered to PCB ground plane for thermal dissipation (1176mW max PD) and EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Break-Before-Make Timing | 5ns typical - prevents transient short-circuits during channel switching in power routing applications. |
| Rail-to-Rail Analog Signal Handling | 0V to V+ range - preserves full dynamic range of audio, sensor, and DAC signals without clipping. |
| Low Quiescent Power | <4μW - extends battery life in always-on mobile peripherals and wearable sensors. |
| High Off-Isolation / Low Crosstalk | –52dB isolation, –78dB crosstalk - maintains signal integrity in multi-source video/audio matrix routing. |
| 1.8V Logic-Compatible Inputs | VIH = 1.4V, VIL = 0.5V at 3V supply - eliminates external level-shifting circuitry for modern low-voltage MCUs. |
Applications
| Cellular Phone Audio Routing | Low-Voltage Data Acquisition |
|---|---|
Use Scenario: Selecting between earpiece, speaker, and headset outputs in a 3.3V/1.8V smartphone baseband IC. IC Role / Device Role / Timing Role: Dual SPDT analog switch providing independent, glitch-free path selection for stereo audio channels. Use Value: 0.6Ω RON and 0.05Ω flatness preserve SNR >95dB; 25ns switching enables fast mode transitions without audible pop. |
Use Scenario: Multiplexing multiple sensor outputs (thermistor, accelerometer, mic) into a shared 12-bit ADC input. IC Role / Device Role / Timing Role: Low-leakage (±2nA COMON) analog switch minimizing measurement error in high-impedance sensor nodes. Use Value: 60pC charge injection prevents baseline shift in precision sample-and-hold stages; rail-to-rail support accommodates ±2.5V sensor ranges. |
| PCMCIA Card Interface | Modem Line-Switching |
Use Scenario: Isolating legacy PCMCIA card I/O lines during hot-insertion to prevent bus contention. IC Role / Device Role / Timing Role: Dual SPDT switch acting as configurable signal gate between host controller and card edge connector. Use Value: Break-before-make operation ensures no momentary short between VCC and GND; 1.6V minimum supply supports low-power suspend states. |
Use Scenario: Routing analog line signals between POTS, DSL, and VoIP codecs in a multi-standard broadband modem. IC Role / Device Role / Timing Role: High-bandwidth (130MHz –3dB) analog switch enabling clean transition between telephony signal paths. Use Value: –78dB crosstalk prevents interference between voice and data channels; 130MHz bandwidth supports V.92/V.90 modulation schemes. |
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 |
|---|---|---|---|
| TMUX1574RTER | Higher RON (1.5Ω typ at 3.3V), no break-before-make, 1.2V logic compatible | Targeted at industrial PLC I/O modules; lacks guaranteed BBM timing for safety-critical reconfiguration | Choose when lower cost and wider temp range (–40°C to +125°C) outweigh need for sub-10ns BBM. |
| ADG732BRUZ | 32-channel, serial-controlled; higher RON (4Ω), 5V-only supply, no 1.8V logic support | Designed for dense test equipment multiplexing, not portable battery-powered signal routing | Choose only for high-channel-count, SPI-configurable systems where single-supply flexibility is secondary. |
Compared with TMUX1574RTER and ADG732BRUZ, the MAX4736ETC+ uniquely delivers sub-10ns break-before-make timing, 0.6Ω RON, and 1.8V logic compatibility in a 3mm × 3mm TQFN-making it optimal for compact, low-power, high-fidelity portable audio and communication systems.
Availability
MAX4736ETC+ is available at Aetrix Electronics and suitable for cellular phone audio routing, low-voltage data-acquisition systems, and PCMCIA card interface designs requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for MAX4736ETC+ 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 MAX4736ETC+ belongs to Maxim's precision analog switch product line, engineered specifically for ultra-low-voltage, low-distortion signal routing in battery-powered portable electronics.
FAQ
What is the maximum continuous current rating for the MAX4736ETC+ analog switches?
The MAX4736ETC+ supports ±300mA continuous current through its COM, NO, and NC terminals under normal operating conditions. This rating applies across the full temperature range (–40°C to +85°C) and is validated for both 1.8V and 3V supply configurations. Exceeding this limit risks thermal degradation or parametric shift, especially in the 12-pin TQFN package where thermal resistance is optimized for up to 1176mW dissipation at +70°C ambient.
Does the MAX4736ETC+ support rail-to-rail analog signal switching?
Yes, the MAX4736ETC+ supports rail-to-rail analog signal switching from 0V to V+, with minimal RON variation over that range. At 3V supply, RON flatness is specified at 0.05Ω max, ensuring consistent signal integrity for audio, sensor, and DAC signals spanning the full supply range. This capability is enabled by its CMOS switch architecture and verified across –40°C to +85°C.
What is the purpose of the exposed pad on the MAX4736ETC+ TQFN package?
The exposed pad (EP) on the MAX4736ETC+ TQFN package must be connected to GND for optimal thermal performance and noise immunity. It provides a low-thermal-resistance path to dissipate up to 1176mW (at TA = +70°C), improves grounding for analog signal integrity, and reduces EMI susceptibility. Maxim explicitly requires soldering the EP to a solid PCB ground plane-floating or unconnected pads violate thermal and electrical specifications.
Can the MAX4736ETC+ operate from a 1.8V supply, and how does performance change?
Yes, the MAX4736ETC+ operates down to 1.6V and is fully specified at 1.8V. At 1.8V supply, RON increases to 1.5Ω typ (vs. 0.6Ω at 3V), tON/tOFF rise to 30ns/25ns, and logic thresholds adjust to VIH = 1.0V/VIL = 0.4V. All key parameters-including leakage, isolation, and charge injection-remain within guaranteed limits, enabling reliable use in ultra-low-power subsystems.
Is the MAX4736ETC+ pin-compatible with other packages in the MAX4736 family?
No, the MAX4736ETC+ (12-pin TQFN) is not pin-compatible with the MAX4736EUB+ (10-pin µMAX) or MAX4736ELB+ (10-pin µDFN). Pin counts, layouts, and terminal assignments differ significantly: the TQFN includes dedicated N.C. pins and reorders IN/COM/NC positions. Board redesign is required when substituting between packages-even though all share identical electrical functionality and logic behavior.
MAX4736ETC+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- 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):
- 100mOhm
- Voltage - Supply, Single (V+):
- 1.6V ~ 4.2V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 25ns, 20ns
- -3db Bandwidth:
- 130MHz
- Charge Injection:
- 60pC
- Channel Capacitance (CS(off), CD(off)):
- 33pF, 60pF
- Current - Leakage (IS(off)) (Max):
- 1nA
- Crosstalk:
- -78dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-TQFN (3x3)
MAX4736ETC+ FAQ
1.How can I place an order for MAX4736ETC+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4736ETC+ 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 MAX4736ETC+ reliable?
The price and inventory of MAX4736ETC+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4736ETC+ is usually 5 days.
3.What payment methods are accepted for MAX4736ETC+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4736ETC+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4736ETC+?
MAX4736ETC+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4736ETC+ 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 MAX4736ETC+?
For technical support, including MAX4736ETC+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4736ETC+ requirements.
6.How does Aetrix verify that MAX4736ETC+ is sourced from the original manufacturer or authorized distributors?
All MAX4736ETC+ 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 MAX4736ETC+ meets industry standards.
7.What is the process for return or replacement of MAX4736ETC+?
All MAX4736ETC+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4736ETC+, 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 MAX4736ETC+ part is unused and in its original packaging.
Return procedure for MAX4736ETC+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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