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Analog Devices Inc./Maxim Integrated MAX4503CUK+T
- Part No.:
- MAX4503CUK+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX4503CUK+T.pdf
- Description:
- IC SW SPST-NOX1 250OHM SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:12,395
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Product details
Overview
MAX4503CUK+T from Maxim Integrated is a low-voltage, dual-supply, normally-open (NO) SPST CMOS analog switch in SOT23-5 package, rated for 0°C to +70°C operation. It supports rail-to-rail analog signal switching across ±1V to ±6V dual supplies, delivers 250Ω on-resistance at ±5V, and exhibits only 1nA off-leakage at +25°C - enabling precision signal routing in battery-powered audio and data-acquisition systems.
For engineers reviewing the MAX4503CUK+T datasheet, MAX4503CUK+T pinout, MAX4503CUK+T application, or MAX4503CUK+T equivalent, key selection criteria include guaranteed on-resistance flatness over temperature, ultra-low charge injection (≤10pC), CMOS-logic compatibility without ground reference, and validated performance in ±3V/±5V dual-supply configurations.
Technical Context
The MAX4503CUK+T implements a fully differential CMOS transmission-gate architecture with independent ESD diodes on COM, NO, IN, V+, and V− pins - enabling bidirectional rail-to-rail analog conduction and intrinsic overvoltage clamping. Its logic-level translator references VIN thresholds to V+, eliminating need for ground connection while maintaining CMOS compatibility across supply voltages.
Switching dynamics are defined by 150ns turn-on and 100ns turn-off times into 1kΩ/1nF loads, with off-isolation exceeding −90dB at 100kHz and on-capacitance of 9pF at 1MHz. Analog leakage paths are strictly confined between signal pins and V+/V− supplies - no internal ground path exists, ensuring isolation integrity in floating or split-rail systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | ±1V to ±6V dual supply - enables operation from low-voltage battery rails up to industrial ±5V systems |
| On-Resistance | 250Ω max at ±5V - ensures minimal signal attenuation and THD impact in audio/data paths |
| Off-Leakage Current | 1nA max at +25°C - preserves accuracy in high-impedance sensor front-ends and sample-hold circuits |
| Charge Injection | 10pC max - limits voltage glitch on sampled nodes, critical for precision ADC input multiplexing |
| Switching Speed | tON = 150ns, tOFF = 100ns - supports >1MHz multiplexing rates in data-acquisition applications |
| Analog Signal Range | Rail-to-rail (V− to V+) - allows full utilization of supply headroom without clipping |
| Logic Compatibility | CMOS-input with V+ referenced thresholds - eliminates external level-shifting in single-supply logic domains |
Pinout & Package
SOT23-5 surface-mount package (3.0mm × 1.7mm × 1.3mm), RoHS-compliant, tape-and-reel packaged for automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - COM | Analog common terminal | Bidirectional signal path hub; connects to NO when enabled; supports equal forward/reverse conduction |
| 2 - NO | Normally-open analog terminal | Open-circuit when IN = LOW; closed to COM when IN = HIGH; no internal connection to NC |
| 3 - V− | Negative analog supply | Sets lower analog rail limit; powers internal ESD diodes and logic translator; no ground reference required |
| 4 - IN | Digital control input | CMOS-compatible logic input referenced to V+; drives internal gate bias; no external pull-up needed |
| 5 - V+ | Positive analog/digital supply | Sets upper analog rail limit and logic threshold reference; supplies internal translator and ESD protection |
Key Features
| Feature | Design Value |
|---|---|
| No ground pin required | Enables true floating operation in isolated or split-rail systems without reference node constraints |
| Guaranteed 250Ω RON | Ensures predictable channel gain error and settling behavior in precision instrumentation designs |
| 10pC max charge injection | Reduces sampling error in switched-capacitor circuits and ADC front-end multiplexers |
| 1nA max off-leakage at +25°C | Maintains DC accuracy in high-Z sensor interfaces and low-power standby modes |
| 150ns/100ns switching | Supports real-time multiplexing of multi-channel audio or sensor data at >1MSPS effective rate |
Applications
| Audio Signal Routing | Low-Voltage Data Acquisition |
|---|---|
|
Use Scenario: Multiplexing microphone inputs or headphone outputs in portable media players. IC Role / Device Role / Timing Role: SPST analog switch controlling signal path between codec and transducers. Use Value: Rail-to-rail ±3V operation preserves full dynamic range; 10pC charge injection prevents audible pop/click during switching. |
Use Scenario: Channel selection for 12-bit SAR ADC in handheld test equipment. IC Role / Device Role / Timing Role: Precision analog multiplexer front-end with low leakage and flat RON vs. voltage. Use Value: 1nA off-leakage avoids input bias current errors; 250Ω RON ensures consistent gain calibration across channels. |
| Battery-Powered Modems | PCMCIA Interface Switching |
|
Use Scenario: Isolating line-driver and line-receiver paths during sleep/wake transitions. IC Role / Device Role / Timing Role: Low-quiescent-current analog switch enabling fast wake-up with minimal power penalty. Use Value: ±1V minimum supply allows direct use of single-cell Li-ion (2.7–4.2V) with charge-pump biasing; 100ns tOFF reduces wake latency. |
Use Scenario: Enabling/disabling analog I/O lines between PCMCIA card and host controller. IC Role / Device Role / Timing Role: Hot-swap-safe signal gate with ESD-protected terminals and no ground dependency. Use Value: Internal V+/V− referenced ESD diodes (±10kV HBM) protect against insertion transients; SOT23-5 footprint saves board space. |
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 | Pin-for-pin equivalent but single-supply only (1.8V to 12V); lacks dual-supply capability and rail-to-rail negative swing | Restricted to unipolar signal chains; cannot replace MAX4503CUK+T in ±3V audio or bipolar sensor interfaces | Select only when system uses single-ended supplies and analog signals remain ≥0V |
| ADG1419BRMZ | Single-supply 5V operation; 3.8Ω on-resistance; requires ground reference; higher 25pC charge injection | Better for low-RON digital signal switching; unsuitable for low-leakage, floating, or dual-rail analog paths | Prefer for high-speed digital multiplexing where leakage and charge injection are secondary concerns |
Compared with MAX4503CUK+T, MAX4501CUK+T sacrifices dual-supply flexibility for simpler supply architecture, while ADG1419BRMZ trades ultra-low leakage and ground-free operation for lower on-resistance - making MAX4503CUK+T uniquely suited for precision, floating, bipolar analog routing.
Availability
MAX4503CUK+T is available at Aetrix Electronics and suitable for battery-operated equipment, audio signal routing, and low-voltage data-acquisition systems requiring stable component supply across commercial temperature range (0°C to +70°C).
Supply support for MAX4503CUK+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, communications, and consumer applications.
The MAX4503CUK+T belongs to Maxim's low-voltage analog switch product line, engineered specifically for rail-to-rail signal integrity, ultra-low leakage, and ground-free operation in portable and isolated systems.
FAQ
What is the maximum dual-supply voltage range supported by the MAX4503CUK+T?
The MAX4503CUK+T operates continuously with dual supplies from ±1V up to ±6V. At ±5V, it guarantees 250Ω on-resistance and 1nA off-leakage at +25°C. Operation beyond ±6V violates absolute maximum ratings and risks permanent damage. The device's internal ESD diodes clamp signals exceeding V+ or V−, limiting safe analog input to the supply rails.
Does the MAX4503CUK+T require a ground connection to function?
No - the MAX4503CUK+T has no ground pin and does not require a ground reference. Its logic input is internally referenced to V+, and analog signal paths are isolated between V+ and V−. This enables true floating operation in isolated systems, such as battery-powered equipment with split-rail supplies or galvanically separated signal chains.
How does the MAX4503CUK+T achieve CMOS-logic compatibility without a ground pin?
The MAX4503CUK+T uses an internal logic-level translator that references VINH and VINL thresholds to V+. With V+ = +5V, VINH ≥ 3.5V and VINL ≤ 1.5V meet standard CMOS logic levels. This architecture eliminates dependence on ground while maintaining compatibility with microcontrollers and FPGAs powered from the same V+ rail - a key feature confirmed in the device's Electrical Characteristics table.
What is the significance of 10pC maximum charge injection in the MAX4503CUK+T?
The 10pC maximum charge injection specification for the MAX4503CUK+T quantifies the transient voltage glitch induced on a sampled capacitor when the switch turns off. In precision applications like ADC input multiplexing or sample-and-hold circuits, this low value minimizes settling error and avoids corruption of high-resolution measurements - a parameter rigorously tested and guaranteed per the datasheet's Note 4.
Can the MAX4503CUK+T be used in place of the MAX4504CUK+T?
No - the MAX4503CUK+T is normally open (NO), while the MAX4504CUK+T is normally closed (NC). Their switch states are complementary: MAX4503CUK+T conducts only when IN = HIGH, whereas MAX4504CUK+T conducts when IN = LOW. Substituting one for the other would invert control logic and disrupt system functionality unless firmware and circuit timing are redesigned accordingly.
MAX4503CUK+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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX4503CUK+T FAQ
1.How can I place an order for MAX4503CUK+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4503CUK+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 MAX4503CUK+T reliable?
The price and inventory of MAX4503CUK+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4503CUK+T is usually 5 days.
3.What payment methods are accepted for MAX4503CUK+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4503CUK+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4503CUK+T?
MAX4503CUK+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4503CUK+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 MAX4503CUK+T?
For technical support, including MAX4503CUK+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4503CUK+T requirements.
6.How does Aetrix verify that MAX4503CUK+T is sourced from the original manufacturer or authorized distributors?
All MAX4503CUK+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 MAX4503CUK+T meets industry standards.
7.What is the process for return or replacement of MAX4503CUK+T?
All MAX4503CUK+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4503CUK+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 MAX4503CUK+T part is unused and in its original packaging.
Return procedure for MAX4503CUK+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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