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Analog Devices Inc./Maxim Integrated MAX4644EUT+TG077
- Part No.:
- MAX4644EUT+TG077
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- -
- Datasheet:
-
MAX4644EUT+TG077.pdf
- Description:
- INTEGRATED CIRCUIT
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Product details
Overview
The MAX4644EUT+TG077 from Maxim Integrated is a single-pole/double-throw (SPDT) CMOS analog switch operating from a single +1.8V to +5.5V supply, delivering 4Ω max on-resistance at +5V, 18ns typical turn-on time, and rail-to-rail analog signal range - deployed in audio routing, battery-powered data acquisition, and sample-and-hold circuits.
For engineers reviewing the MAX4644EUT+TG077 datasheet, MAX4644EUT+TG077 pinout, MAX4644EUT+TG077 application, or MAX4644EUT+TG077 equivalent, key selection criteria include guaranteed RON flatness (≤0.75Ω), break-before-make timing (≤8ns), sub-0.35nA leakage over –40°C to +85°C, and SOT23-6 package compatibility with space-constrained portable designs.
Technical Context
The MAX4644EUT+TG077 uses BiCMOS process technology to achieve low RON and high-speed switching while maintaining TTL/CMOS-compatible logic inputs. Its internal logic-level translators drive analog gates directly from V+ and GND, enabling rail-to-rail signal handling without external level-shifting.
ESD protection diodes are integrated between each analog pin (COM, NO, NC) and both V+ and GND, defining the absolute maximum analog voltage range as –0.3V to (V+ + 0.3V). Leakage current originates solely from these diodes - not inter-channel paths - ensuring channel isolation remains unaffected by signal polarity or magnitude.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +1.8V to +5.5V single supply - enables direct integration into Li-ion–powered systems and 3.3V/5V mixed-signal boards without regulators. |
| On-Resistance (RON) | 4Ω max at +5V - ensures minimal signal attenuation and distortion in precision analog paths up to 10mA load. |
| RON Flatness | 0.75Ω typ at +5V - maintains consistent gain and linearity across full 0V to V+ analog input range. |
| Switching Speed | tON = 18ns typ, tOFF = 12ns typ - supports >20MHz digital control rates and fast multiplexing in real-time sampling systems. |
| Leakage Current | <0.35nA over –40°C to +85°C - preserves accuracy in high-impedance sensor interfaces and ultra-low-power sleep modes. |
| Off-Isolation | –80dB at 1MHz - suppresses crosstalk between active and inactive channels in multi-source audio/video routing. |
| Charge Injection | 5pC - limits voltage glitch on COM during switching, critical for sample-and-hold hold-step integrity. |
Pinout & Package
MAX4644EUT+TG077 is packaged in a RoHS-compliant 6-pin SOT23 (U6+4) with 1.6mm × 2.9mm footprint and 0.95mm height - optimized for PCB area-constrained portable electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN | Digital Control Input | TTL/CMOS-compatible logic signal controlling SPDT state; drives internal gate drivers referenced to V+ and GND. |
| 2 - GND | Analog & Digital Ground Reference | Common return path for supply current, logic thresholds, and analog signal bias - must be low-impedance for THD & leakage performance. |
| 3 - NO | Normally Open Analog Terminal | Connects to COM only when IN = high; bidirectional signal path with 12pF off-capacitance and matched RON to NC. |
| 4 - COM | Common Analog Terminal | Central signal node routed to either NO or NC; handles ±50mA continuous current and supports rail-to-rail AC/DC signals. |
| 5 - NC | Normally Closed Analog Terminal | Connects to COM only when IN = low; identical RON, flatness, and leakage specs as NO - enables symmetric signal routing. |
| 6 - V+ | Positive Supply Input | +1.8V to +5.5V analog/digital supply; requires local 0.1μF ceramic bypass to GND for stable switching and low noise. |
Key Features
| Feature | Design Value |
|---|---|
| Break-Before-Make Timing | Guaranteed ≤8ns - prevents momentary shorting between NO and NC during state transitions, eliminating signal glitches in critical routing paths. |
| RON Matching | 0.1Ω typ between NO and NC channels at +5V - ensures balanced insertion loss and phase response in differential or dual-path applications. |
| Low THD | 0.018% at 20Hz–20kHz - preserves audio fidelity in headphone amplifiers and line-level switching without audible artifacts. |
| High Off-Isolation & Low Crosstalk | –80dB off-isolation and –82dB crosstalk at 1MHz - isolates unused signal sources in multi-input AV receivers and test equipment backplanes. |
| Ultra-Low Quiescent Power | <0.01μW - draws negligible current in standby, extending battery life in always-on IoT sensors and wearable health monitors. |
Applications
| Portable Audio Switching | Low-Voltage Data Acquisition |
|---|---|
|
Use Scenario: Routing microphone, line-in, and headset signals in Bluetooth earbuds and voice-controlled wearables. IC Role / Device Role / Timing Role: SPDT analog switch selecting between multiple audio sources while maintaining signal integrity and power efficiency. Use Value: 4Ω RON and 0.018% THD prevent volume loss and distortion; 0.35nA leakage avoids DC offset drift during long-duration voice capture. |
Use Scenario: Multiplexing thermistor, RTD, and potentiometer inputs into a 16-bit SAR ADC in handheld multimeters. IC Role / Device Role / Timing Role: Precision analog front-end switch enabling sequential sensor sampling with minimal channel-to-channel error. Use Value: 0.1Ω RON match and 0.75Ω flatness ensure <±0.01% gain error across all channels; 5pC charge injection limits hold-step error to <1 LSB. |
| Sample-and-Hold Circuits | Communications Signal Routing |
|
Use Scenario: Controlling hold capacitor connection in precision ADC front-ends for industrial process monitoring. IC Role / Device Role / Timing Role: Fast, low-leakage switch isolating the hold capacitor during acquisition and connecting it during hold phase. Use Value: 12ns tOFF enables rapid hold initiation; sub-0.35nA leakage prevents capacitor discharge over 100ms hold periods. |
Use Scenario: Selecting between RF transceiver I/Q paths and calibration loops in 4G/LTE small-cell baseband modules. IC Role / Device Role / Timing Role: High-isolation analog switch managing signal flow in FDD/TDD reconfigurable radio architectures. Use Value: –80dB off-isolation suppresses LO feedthrough; 18ns tON supports dynamic antenna tuning within 100ns control windows. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPDT analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG849BRMZ-REEL | Higher RON (6.5Ω max at +5V), slower tON/tOFF (35ns/25ns), same SOT23-6 package. | Lower bandwidth suitability; less ideal for >10MHz switching or ultra-low-distortion audio. | Choose ADG849BRMZ-REEL where cost sensitivity outweighs speed/THD requirements and layout reuse is prioritized. |
| TS5A23157DCKR | Lower supply range (+1.65V to +5.5V), higher leakage (1nA typ), no guaranteed RON flatness spec. | Acceptable for general-purpose routing but unsuitable for precision measurement or long-hold sample-and-hold. | Choose TS5A23157DCKR for non-critical consumer interfaces where leakage and flatness are not design constraints. |
Compared with ADG849BRMZ-REEL and TS5A23157DCKR, the MAX4644EUT+TG077 delivers superior RON flatness, lower leakage, and faster switching - making it the preferred choice for high-fidelity audio, precision data acquisition, and time-critical hold functions where signal integrity is non-negotiable.
Availability
MAX4644EUT+TG077 is available at Aetrix Electronics and suitable for battery-operated equipment, audio/video signal routing, and low-voltage data-acquisition systems requiring stable component supply across extended production lifecycles.
Supply support for MAX4644EUT+TG077 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 communications applications.
The MAX4644EUT+TG077 belongs to Maxim's high-speed analog switch product line, engineered specifically for low-voltage, low-power, high-fidelity signal routing in portable and space-constrained systems.
FAQ
What is the maximum analog signal voltage range supported by the MAX4644EUT+TG077?
The MAX4644EUT+TG077 supports a rail-to-rail analog signal range from 0V to V+, where V+ is set between +1.8V and +5.5V. Absolute maximum analog pin voltage is –0.3V to (V+ + 0.3V) due to internal ESD diodes. This allows the MAX4644EUT+TG077 to handle both unipolar and bipolar AC signals when V+ and GND are appropriately biased - critical for audio and sensor interfaces.
Does the MAX4644EUT+TG077 support true break-before-make operation, and what is its guaranteed timing?
Yes, the MAX4644EUT+TG077 guarantees break-before-make (BBM) operation with tBBM ≤ 8ns at +5V and +25°C, and ≤15ns over –40°C to +85°C. This is achieved via internal timing control circuitry that delays turn-on of the newly selected path until the previously active path is fully disconnected - preventing momentary shorts in the MAX4644EUT+TG077's SPDT configuration.
What is the leakage current specification for the MAX4644EUT+TG077 over temperature?
The MAX4644EUT+TG077 specifies total analog leakage (COM, NO, NC) of < ±0.35nA over the full –40°C to +85°C operating range. This includes both on-state and off-state leakage, dominated by ESD diode reverse currents. The MAX4644EUT+TG077 maintains this performance without external biasing, enabling reliable use in high-impedance sensor nodes and long-hold sample-and-hold circuits.
Can the MAX4644EUT+TG077 operate with a +3.3V supply, and how does RON change?
Yes, the MAX4644EUT+TG077 is fully specified at +3.3V (within its +2.7V to +3.3V range), with RON ≤ 8Ω max and RON flatness ≤ 3Ω. At +3.3V, typical RON is ~6Ω - higher than the +5V spec but still suitable for most portable applications. The MAX4644EUT+TG077 retains all timing, leakage, and isolation specs at +3.3V, ensuring consistent behavior across dual-voltage system designs.
Is the MAX4644EUT+TG077 pin-compatible with other SOT23-6 analog switches like the MAX4642 or MAX4643?
No - the MAX4644EUT+TG077 has a unique pinout among Maxim's SOT23-6 SPDT switches. While MAX4642/MAX4643 share the same package, their IN, COM, NO, and NC assignments differ. Using the MAX4644EUT+TG077 in an existing MAX4642 layout would cause incorrect switching behavior. Always verify pin mapping using the MAX4644EUT+TG077 top-mark "AAHQ" and official land pattern U6+4 before PCB integration.
MAX4644EUT+TG077 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- 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:
- -
MAX4644EUT+TG077 FAQ
1.How can I place an order for MAX4644EUT+TG077 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4644EUT+TG077 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 MAX4644EUT+TG077 reliable?
The price and inventory of MAX4644EUT+TG077 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4644EUT+TG077 is usually 5 days.
3.What payment methods are accepted for MAX4644EUT+TG077?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4644EUT+TG077 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4644EUT+TG077?
MAX4644EUT+TG077 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4644EUT+TG077 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 MAX4644EUT+TG077?
For technical support, including MAX4644EUT+TG077 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4644EUT+TG077 requirements.
6.How does Aetrix verify that MAX4644EUT+TG077 is sourced from the original manufacturer or authorized distributors?
All MAX4644EUT+TG077 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 MAX4644EUT+TG077 meets industry standards.
7.What is the process for return or replacement of MAX4644EUT+TG077?
All MAX4644EUT+TG077 units undergo pre-shipment inspection (PSI). If there is an issue with MAX4644EUT+TG077, 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 MAX4644EUT+TG077 part is unused and in its original packaging.
Return procedure for MAX4644EUT+TG077:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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