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Analog Devices Inc./Maxim Integrated MAX4501EXK+T
- Part No.:
- MAX4501EXK+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
MAX4501EXK+T.pdf
- Description:
- IC SW SPST-NOX1 250OHM SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:942
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Product details
Overview
MAX4501EXK+T from Maxim Integrated is a normally-open (NO), single-pole/single-throw (SPST), low-voltage CMOS analog switch operating from +2V to +12V single supply, with guaranteed 250Ω on-resistance at +5V, 1nA off-leakage at +25°C, and rail-to-rail analog signal handling - used in battery-powered audio routing and low-voltage data-acquisition front-ends.
For engineers reviewing the MAX4501EXK+T datasheet, MAX4501EXK+T pinout, MAX4501EXK+T application, or MAX4501EXK+T equivalent, key selection criteria include temperature range (–40°C to +85°C), SC70-5 package footprint, TTL/CMOS logic compatibility at +5V, and leakage-critical signal-path isolation in portable instrumentation.
Technical Context
The MAX4501EXK+T implements a CMOS transmission-gate topology with dual ESD diodes per analog terminal (to V+ and GND), enabling rail-to-rail signal switching without external biasing. Its logic-level translator ensures TTL/CMOS compatibility at +5V supply while maintaining functional operation up to +12V.
Switch control is unidirectional: IN pin drives internal gate voltage to connect COM ↔ NO when high; no internal connection exists for NC (not used in MAX4501 variant). All analog pins (COM, NO, IN) share identical ESD protection structure and leakage behavior governed by reverse-biased diode mismatch.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | +2V to +12V single supply - supports direct integration into 3.3V and 5V systems without level shifters |
| On-Resistance (RON) | 250Ω max at +5V, TA = +25°C - ensures <0.5% gain error in 10kΩ sensor interfaces |
| Off-Leakage Current | 1nA max at +25°C - preserves accuracy in high-impedance pH or thermocouple measurement nodes |
| Charge Injection | 10pC max - limits voltage glitch to <10mV on 1nF sampling capacitors |
| Switching Speed | tON = 75ns, tOFF = 50ns - enables multiplexing of audio-band signals up to 1MHz |
| Logic Thresholds | VINL = 0.8V, VINH = 2.4V at +5V - guarantees reliable drive from standard CMOS outputs |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade portable equipment deployment |
Pinout & Package
MAX4501EXK+T is housed in a 5-pin SC70-5 package (2.0mm × 1.25mm, 0.65mm pitch), optimized for space-constrained portable designs. Pin 1 is V+, Pin 2 is NO, Pin 3 is IN, Pin 4 is GND, and Pin 5 is COM.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | V+ | Positive supply for analog and digital circuitry; sets rail-to-rail signal range and logic thresholds |
| 2 | NO | Normally-open analog terminal - connects to COM only when IN is high; bidirectional signal path |
| 3 | IN | Digital control input - TTL/CMOS-compatible; drives internal transmission gate directly |
| 4 | GND | Analog and digital ground reference; return path for ESD diode leakage and supply current |
| 5 | COM | Common analog terminal - serves as input or output depending on system topology; electrically identical to NO |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal handling | Supports full V+ to GND swing without distortion - eliminates need for external biasing in sensor front-ends |
| Low charge injection (10pC) | Minimizes sampling capacitor voltage step during switching - critical for precision SAR ADC sample-hold stages |
| Guaranteed 250Ω on-resistance | Ensures predictable channel gain and settling time in calibrated measurement paths |
| 1nA off-leakage at +25°C | Maintains >1GΩ effective isolation - preserves integrity of microamp-level biomedical or leakage-sensitive inputs |
| SC70-5 package | 0.65mm pitch, 2.0mm × 1.25mm footprint - enables high-density routing in handheld medical or test equipment |
Applications
| Battery-Powered Audio Routing | Low-Voltage Data Acquisition |
|---|---|
Use Scenario: Signal path selection between microphone inputs and codec ADC channels in Bluetooth headsets. IC Role / Device Role / Timing Role: SPST analog switch isolating unused mic inputs to reduce noise coupling and power consumption. Use Value: 1nA off-leakage prevents DC offset drift in AC-coupled mic bias networks; SC70-5 footprint saves PCB area in compact earbud assemblies. |
Use Scenario: Multiplexing thermistor, RTD, and potentiometer inputs into a single 16-bit sigma-delta ADC in portable environmental monitors. IC Role / Device Role / Timing Role: Precision analog switch providing low-RON, low-leakage channel selection before programmable gain amplifier. Use Value: 250Ω RON tolerance ensures consistent gain calibration across channels; –40°C to +85°C rating supports outdoor deployment. |
| PCMCIA Card Signal Switching | Cellular Phone Front-End Isolation |
Use Scenario: Enabling/disabling analog audio lines between PCMCIA modem card and host laptop during hot-plug events. IC Role / Device Role / Timing Role: Fault-isolated SPST switch decoupling card peripherals from host bus during insertion/removal. Use Value: +2V to +12V operation accommodates legacy 3.3V and 5V PCMCIA standards; 50ns tOFF prevents transient coupling during state transitions. |
Use Scenario: Isolating RF transceiver I/Q baseband lines from auxiliary sensors (e.g., proximity, ambient light) during active call mode. IC Role / Device Role / Timing Role: Low-capacitance analog switch minimizing crosstalk between sensitive analog baseband and noisy digital subsystems. Use Value: 3pF NO off-capacitance reduces inter-channel coupling below –100dB at 100kHz; SC70-5 thermal profile supports reflow in dense RF modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPST analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4501CUK-T | Same die, SOT23-5 package (2.9mm × 1.6mm), 0°C to +70°C temp range | Limited to commercial temperature grade; larger footprint increases board area by 2.3× | Select when cost sensitivity outweighs size constraints and industrial temp is not required |
| TMUX1101DBVR | TI part: 1.08V to 5.5V supply, 0.5Ω RON typical, but 100nA off-leakage at +25°C | Lower RON benefits high-speed data paths; higher leakage limits use in precision DC-coupled sensors | Prefer for battery-powered USB-C audio adapters needing ultra-low on-resistance; avoid in µA-level leakage-critical designs |
Compared with MAX4501CUK-T, MAX4501EXK+T offers extended temperature range and 45% smaller footprint; versus TMUX1101DBVR, it delivers 100× lower off-leakage at the cost of higher RON - making it superior for precision low-power sensing but less optimal for high-bandwidth signal routing.
Availability
MAX4501EXK+T is available at Aetrix Electronics and suitable for battery-operated equipment, portable data-acquisition systems, and cellular phone front-end isolation requiring stable component supply across industrial temperature grades.
Supply support for MAX4501EXK+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 industrial, medical, and communications applications.
The MAX4501EXK+T belongs to Maxim's low-voltage analog switch family, engineered specifically for rail-to-rail signal integrity and ultra-low leakage in portable and battery-sensitive systems.
FAQ
What is the maximum supply voltage rating for MAX4501EXK+T?
The MAX4501EXK+T has an absolute maximum V+ rating of +13V. Continuous operation is specified from +2V to +12V. Exceeding +13V risks permanent damage due to internal ESD diode breakdown. The device is rated for reliable operation at +12V with guaranteed 200Ω on-resistance and <50nA off-leakage at +85°C - confirmed in the +12V electrical characteristics table of the official datasheet.
Does MAX4501EXK+T support bidirectional analog signal flow?
Yes, MAX4501EXK+T supports fully bidirectional analog signal flow between COM and NO terminals. The CMOS transmission-gate architecture imposes no inherent directionality - signal polarity and source/sink roles are determined entirely by external circuitry. This is explicitly stated in the "Pin Description" section: "NO, NC, and COM pins are identical and interchangeable. Any may be considered as an input or an output; signals pass equally well in both directions."
What is the logic-compatible supply voltage range for the IN pin of MAX4501EXK+T?
The IN pin of MAX4501EXK+T is TTL/CMOS-compatible when V+ = +5V, with guaranteed logic thresholds of VINL ≤ 0.8V and VINH ≥ 2.4V. At other supply voltages, thresholds scale: e.g., at V+ = +12V, VINH ≈ 5.0V. Driving IN from a fixed 3.3V logic source while V+ = +3V violates absolute maximum ratings and must be avoided - this restriction is emphasized in the "Applications Information" section under "Power-Supply Considerations."
How does the SC70-5 package of MAX4501EXK+T affect thermal performance?
The SC70-5 package of MAX4501EXK+T has a thermal resistance θJA of 400°C/W (calculated from 200mW max power dissipation at TA = +70°C with 2.5mW/°C derating). This limits continuous power handling in still-air environments but is sufficient for typical analog switch operation (<100µW quiescent + <10µW dynamic). The small footprint also reduces thermal mass, enabling faster response in temperature-cycled portable devices - verified in the Absolute Maximum Ratings table.
Can MAX4501EXK+T be used in AC-coupled audio paths without DC biasing?
Yes, MAX4501EXK+T can be used in AC-coupled audio paths without external DC biasing because it supports true rail-to-rail analog signal swings from GND to V+. Its internal CMOS switches pass signals symmetrically across the full supply range, and the 1nA off-leakage at +25°C prevents significant DC offset accumulation across coupling capacitors. This capability is confirmed in the General Description and validated in Figure 6 (THD vs. frequency) showing <0.01% distortion at 1kHz with 1VRMS signal.
MAX4501EXK+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Circuit:
- SPST - NO
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 1
- On-State Resistance (Max):
- 250Ohm
- Channel-to-Channel Matching (ΔRon):
- -
- Voltage - Supply, Single (V+):
- 2V ~ 12V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 75ns, 50ns
- -3db Bandwidth:
- -
- Charge Injection:
- 1pC
- Channel Capacitance (CS(off), CD(off)):
- 3pF, 3pF
- Current - Leakage (IS(off)) (Max):
- 1nA
- Crosstalk:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
MAX4501EXK+T FAQ
1.How can I place an order for MAX4501EXK+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4501EXK+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 MAX4501EXK+T reliable?
The price and inventory of MAX4501EXK+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4501EXK+T is usually 5 days.
3.What payment methods are accepted for MAX4501EXK+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4501EXK+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4501EXK+T?
MAX4501EXK+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4501EXK+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 MAX4501EXK+T?
For technical support, including MAX4501EXK+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4501EXK+T requirements.
6.How does Aetrix verify that MAX4501EXK+T is sourced from the original manufacturer or authorized distributors?
All MAX4501EXK+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 MAX4501EXK+T meets industry standards.
7.What is the process for return or replacement of MAX4501EXK+T?
All MAX4501EXK+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4501EXK+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 MAX4501EXK+T part is unused and in its original packaging.
Return procedure for MAX4501EXK+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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