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Analog Devices Inc./Maxim Integrated MAX4503EUK+T
- Part No.:
- MAX4503EUK+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX4503EUK+T.pdf
- Description:
- IC SW SPST-NOX1 250OHM SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:8,258
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Product details
Overview
MAX4503EUK+T from Maxim Integrated is a low-voltage, dual-supply, normally-open (NO) SPST CMOS analog switch in SOT23-5 package. It operates from ±1V to ±6V supplies, delivers rail-to-rail signal switching, guarantees 250Ω on-resistance at ±5V, and exhibits only 1nA off-leakage at +25°C - ideal for precision low-power signal routing in portable instrumentation.
For engineers reviewing the MAX4503EUK+T datasheet, MAX4503EUK+T pinout, MAX4503EUK+T application, or MAX4503EUK+T equivalent, key selection criteria include its dual-supply operation without ground pin, guaranteed charge injection ≤10pC, fast tON/tOFF (150ns/100ns), and -40°C to +85°C industrial temperature rating.
Technical Context
The MAX4503EUK+T implements a fully differential CMOS transmission gate architecture with independent ESD diodes on COM, NO, IN, V+, and V− pins. Its logic input uses an internal comparator referenced to V+, enabling CMOS-compatible control without a ground connection - critical for floating-bus or isolated supply systems.
Signal integrity is maintained via matched on-resistance flatness (<±10% over ±4.5V signal range at +25°C), low 3pF COM off-capacitance, and high off-isolation (>−90dB at 100kHz). All leakage currents are 100% tested at maximum operating temperature and correlated to +25°C per production test flow.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | ±1V to ±6V dual supply - supports ultra-low-voltage battery operation down to ±1V without performance degradation |
| On-Resistance | 250Ω max at ±5V - ensures minimal signal attenuation and gain error in precision sensor front-ends |
| Off-Leakage Current | 1nA max at +25°C - preserves accuracy in high-impedance measurement paths (e.g., pH probes, photodiode amps) |
| Charge Injection | 10pC max - limits voltage glitch on sampled-hold capacitors, enabling <12-bit settling in data-acquisition systems |
| Switching Speed | tON = 150ns, tOFF = 100ns - supports multiplexing of audio-band signals up to ~1MHz with minimal timing skew |
| Analog Signal Range | Rail-to-rail (V− to V+) - allows full utilization of supply headroom in single-ended or differential signal chains |
| Logic Compatibility | CMOS-input with no ground pin - simplifies interface to isolated microcontrollers or level-shifted FPGA I/O banks |
Pinout & Package
SOT23-5 package: 2.9mm × 1.6mm × 1.1mm body, gull-wing leads, JEDEC MO-178 compatible, tape-and-reel packaging (3000 pcs/reel).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - COM | Analog common terminal | Signal path hub; bidirectional - connects to either NO or NC depending on control state |
| 2 - NO | Normally open analog terminal | Open-circuit when IN = LOW; closed to COM when IN = HIGH - defines SPST-NO function |
| 3 - V− | Negative analog supply | Sets lower rail for analog signal range and powers internal ESD protection diodes |
| 4 - IN | Digital control input | CMOS-compatible logic input referenced to V+; no external pull-up required |
| 5 - V+ | Positive analog/digital supply | Powers analog switch core, internal logic translator, and serves as logic reference |
Key Features
| Feature | Design Value |
|---|---|
| No ground pin required | Enables operation in floating, isolated, or split-rail systems without ground-loop risk or layout constraints |
| Guaranteed 250Ω RON | Ensures predictable channel gain and THD in audio routing and sensor multiplexing applications |
| 1nA off-leakage at +25°C | Maintains DC accuracy in µA-level current-sensing circuits and high-Z biomedical front-ends |
| 10pC max charge injection | Reduces hold-step error in 12-bit SAR ADC sample-and-hold stages without external correction |
| 150ns turn-on time | Supports >1 MSPS channel scanning in multi-sensor data loggers with deterministic timing |
Applications
| Battery-Powered Medical Sensors | Portable Audio Signal Routing |
|---|---|
Use Scenario: Multiplexing ECG electrode inputs into a single low-noise instrumentation amplifier with auto-zero calibration. IC Role / Device Role / Timing Role: SPST analog switch isolating each electrode path during calibration cycles while maintaining DC-coupled signal integrity. Use Value: 1nA off-leakage prevents baseline drift; rail-to-rail operation preserves full ±2.5V ECG dynamic range across varying battery voltage. | Use Scenario: Routing microphone, line-in, and headset output signals in a Bluetooth-enabled voice recorder with dual ±3V supplies. IC Role / Device Role / Timing Role: Low-distortion signal path selector enabling simultaneous record/playback with minimal crosstalk. Use Value: 250Ω RON and <3pF off-capacitance ensure flat frequency response to 20kHz; 10pC charge injection avoids pop/click artifacts. |
| Low-Voltage Data Acquisition | Industrial Modem Interface |
Use Scenario: Switching between thermocouple, RTD, and strain gauge inputs to a 16-bit sigma-delta ADC in a handheld multimeter. IC Role / Device Role / Timing Role: Precision analog multiplexer with guarded guard drive capability using COM as driven shield node. Use Value: Guaranteed RON matching enables ratiometric measurements; ±1V min supply allows operation from single Li-ion cell with boost converter. | Use Scenario: Isolating RS-232 TX/RX lines from modem IC during power-down sequences in embedded telematics units. IC Role / Device Role / Timing Role: Fail-safe signal disconnect device preventing backfeed into powered-down UART peripherals. Use Value: Dual-supply operation matches RS-232 voltage levels (±3V to ±6V); 100ns tOFF ensures clean break-before-make timing during reset. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPST analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4503CUK+ | 0°C to +70°C temperature range; same SOT23-5 package and pinout | Limited to commercial-grade environments; unsuitable for automotive or extended-temperature industrial use | Select MAX4503CUK+ only for cost-sensitive consumer devices with ambient temperature control |
| ADG1419BRMZ | Single +5V supply only; 4.7Ω typical RON; requires ground reference; SOIC-8 package | Cannot operate from dual ± supplies; incompatible with floating-bus architectures requiring no ground pin | Choose ADG1419BRMZ when ultra-low on-resistance is critical and system uses single-rail +5V with grounded logic |
Compared with MAX4503CUK+, the MAX4503EUK+T adds industrial temperature support and tighter leakage specs; versus ADG1419BRMZ, it trades lower RON for dual-supply flexibility and groundless operation - making it uniquely suited for battery-powered, isolated, or bipolar-signal systems.
Availability
MAX4503EUK+T is available at Aetrix Electronics and suitable for battery-operated medical sensors, portable audio routing, low-voltage data acquisition, industrial modem interfaces, and precision instrumentation requiring stable component supply across extended temperature ranges.
Supply support for MAX4503EUK+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, communications, and computing applications.
The MAX4503EUK+T belongs to Maxim's high-performance analog switch family, engineered specifically for low-leakage, rail-to-rail signal routing in space-constrained, battery-sensitive, and dual-supply systems.
FAQ
What is the maximum dual-supply voltage range supported by the MAX4503EUK+T?
The MAX4503EUK+T supports dual-supply operation from ±1V up to ±6V. This means V+ can be as high as +6V and V− as low as −6V, enabling compatibility with standard ±5V systems as well as ultra-low-voltage ±1.5V or ±2V battery-powered designs. Operation outside this range risks permanent damage per absolute maximum ratings.
Does the MAX4503EUK+T require a ground connection for proper logic-level interfacing?
No, the MAX4503EUK+T does not require a ground connection. Its digital input uses an internal comparator referenced to V+, allowing CMOS-compatible logic control directly from a microcontroller powered by the same V+ supply - eliminating ground loops and simplifying design in isolated or floating systems where no system ground is available.
How does the MAX4503EUK+T achieve rail-to-rail analog signal handling?
The MAX4503EUK+T achieves rail-to-rail analog signal handling through its fully differential CMOS transmission gate structure and ESD diode clamping architecture tied to V+ and V−. As long as the analog signal stays within V− to V+, the internal switches remain fully enhanced, preserving linearity and low distortion - confirmed by guaranteed RON flatness across the full ±4.5V range at ±5V supplies.
Can the MAX4503EUK+T be used in single-supply configurations?
The MAX4503EUK+T is designed for dual-supply operation and is not characterized for reliable single-supply use. For single-supply applications, Maxim specifies the pin-for-pin compatible MAX4501/MAX4502 series - which feature dedicated GND and V+ pins optimized for 0V–V+ signal ranges and avoid potential latch-up or undefined behavior when V− is tied to ground.
What is the significance of the 'E' grade in MAX4503EUK+T?
The 'E' grade in MAX4503EUK+T denotes the industrial temperature range of −40°C to +85°C, verified by 100% testing at temperature extremes and correlation to +25°C data. This grade ensures guaranteed performance in harsh environments such as factory automation, outdoor telemetry, and automotive under-hood modules - unlike the 'C' grade (0°C to +70°C) intended for commercial applications.
MAX4503EUK+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+):
- -
- Voltage - Supply, Dual (V±):
- ±1V ~ 6V
- Switch Time (Ton, Toff) (Max):
- 150ns, 100ns
- -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:
- SOT-23-5
MAX4503EUK+T FAQ
1.How can I place an order for MAX4503EUK+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4503EUK+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 MAX4503EUK+T reliable?
The price and inventory of MAX4503EUK+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4503EUK+T is usually 5 days.
3.What payment methods are accepted for MAX4503EUK+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4503EUK+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4503EUK+T?
MAX4503EUK+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4503EUK+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 MAX4503EUK+T?
For technical support, including MAX4503EUK+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4503EUK+T requirements.
6.How does Aetrix verify that MAX4503EUK+T is sourced from the original manufacturer or authorized distributors?
All MAX4503EUK+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 MAX4503EUK+T meets industry standards.
7.What is the process for return or replacement of MAX4503EUK+T?
All MAX4503EUK+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4503EUK+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 MAX4503EUK+T part is unused and in its original packaging.
Return procedure for MAX4503EUK+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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