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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-NCX1 250OHM SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,544
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Product details
Overview
MAX4503EUK-T from Maxim Integrated is a low-voltage, dual-supply, single-pole/single-throw (SPST), normally open (NO) CMOS analog switch in SOT23-5 package. It operates from ±1V to ±6V supplies, supports rail-to-rail analog signals up to ±4.5V, delivers 250Ω on-resistance at ±5V, and exhibits only 1nA off-leakage at +25°C - enabling precision signal routing in battery-powered portable instrumentation.
For engineers reviewing the MAX4503EUK-T datasheet, MAX4503EUK-T pinout, MAX4503EUK-T application, or MAX4503EUK-T equivalent, key selection criteria include guaranteed on-resistance flatness over temperature, ultra-low charge injection (≤10pC), fast switching (tON = 150ns), dual-supply logic compatibility without ground reference, and -40°C to +85°C industrial temperature rating.
Technical Context
The MAX4503EUK-T uses a fully differential CMOS transmission gate architecture with independent V+ and V− supply pins-no ground connection required. Its logic input stage includes an internal voltage-referenced comparator and level translator that converts CMOS-compatible inputs into full-rail analog gate drive signals referenced to V+ and V−.
Analog terminals (COM, NO, IN) feature ESD protection diodes to both V+ and V−, defining absolute signal limits and contributing to leakage current behavior. Leakage is specified per terminal (ICOM(OFF), INO(OFF)) and varies with temperature and common-mode voltage, with worst-case 10nA at +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | ±1V to ±6V dual supply - enables operation from low-voltage battery rails (e.g., ±1.5V) up to industrial ±5V systems |
| On-Resistance (RON) | 250Ω max at ±5V, TA = +25°C - ensures minimal signal attenuation and gain error in precision sensor/ADC front-ends |
| Off-Leakage Current | 1nA max at +25°C, 10nA max at +85°C - preserves accuracy in high-impedance sample-and-hold or multiplexer applications |
| Charge Injection | 10pC max - limits voltage glitch on sampled nodes, critical for 12-bit+ data acquisition systems |
| Switching Speed | tON = 150ns, tOFF = 100ns - supports multiplexing of audio-band and low-MHz control signals |
| Analog Signal Range | Rail-to-rail: V− to V+ - allows full utilization of ±4.5V signal swing with ±5V supplies |
| Logic Compatibility | CMOS-input with no ground pin - accepts logic high ≥(V+ − 1.5V) and logic low ≤(V− + 0.4V) when V+ = ±3V to ±5V |
Pinout & Package
SOT23-5 surface-mount package (3.0mm × 1.7mm × 1.3mm body, 0.95mm pitch); RoHS-compliant, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - COM | Analog Common Terminal | Signal path midpoint; bidirectional - connects to either NO or NC depending on logic state |
| 2 - NO | Normally Open Terminal | Open-circuit when IN = LOW; closed to COM when IN = HIGH - defines SPST-NO function |
| 3 - V− | Negative Analog Supply | Sets lower analog rail limit and powers internal logic translator; reverse ESD diodes clamp signals below V− |
| 4 - IN | Digital Control Input | CMOS-compatible logic input; no ground reference - threshold scales with V+ and V− |
| 5 - V+ | Positive Analog & Digital Supply | Sets upper analog rail limit and powers internal logic; also serves as reference for input comparator |
Key Features
| Feature | Design Value |
|---|---|
| No ground pin required | Enables floating dual-supply operation in isolated subsystems or split-rail battery designs without shared ground reference |
| Guaranteed RON flatness | ≤250Ω across -40°C to +85°C and full analog signal range - maintains channel matching in multi-channel muxes |
| Low charge injection | ≤10pC - minimizes settling error in switched-capacitor circuits and sample-and-hold amplifiers |
| Ultra-low off-leakage | 1nA at +25°C - prevents DC offset drift in high-Z sensor interfaces (e.g., piezoelectric, pH electrodes) |
| Fast turn-on/turn-off | 150ns/100ns - supports >5MHz multiplexing rates in data-acquisition systems with minimal timing skew |
Applications
| Battery-Powered Portable Instrumentation | Audio Signal Routing in Handheld Devices |
|---|---|
Use Scenario: Multiplexing thermocouple, RTD, or strain gauge inputs into a single ADC channel in handheld multimeters or field sensors. IC Role / Device Role / Timing Role: SPST analog switch isolating high-impedance sensor outputs; controlled by microcontroller GPIO during sequential sampling. Use Value: 1nA off-leakage prevents measurement drift; rail-to-rail ±4.5V range accommodates amplified sensor outputs without level-shifting. |
Use Scenario: Selecting between microphone input, line-in, or headset output paths in Bluetooth headsets or voice-enabled wearables. IC Role / Device Role / Timing Role: Low-distortion analog switch routing AC-coupled audio signals; toggled during mode transitions or call handover. Use Value: 250Ω RON and <10pC charge injection preserve SNR and prevent pop/click artifacts in 20Hz–20kHz band. |
| Low-Voltage Data-Acquisition Front-Ends | PCMCIA/CompactFlash Card Interface Switching |
Use Scenario: Isolating unused channels in 16-bit SAR ADC evaluation boards powered from ±3V LDOs. IC Role / Device Role / Timing Role: Channel enable/disable element in programmable gain amplifier (PGA) input stage; synchronized with ADC conversion trigger. Use Value: Dual-supply operation from ±3V eliminates need for charge pumps; guaranteed RON flatness ensures consistent gain calibration across temperature. |
Use Scenario: Enabling/disabling I/O lines between host controller and PCMCIA card during hot-plug detection and power sequencing. IC Role / Device Role / Timing Role: Level-translating isolation switch for 3.3V/5V mixed-signal bus segments; driven by card-detect logic. Use Value: No ground pin simplifies isolation between host and card domains; ±1V min supply supports low-power suspend states. |
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+T | Same silicon, 0°C to +70°C temperature grade vs. -40°C to +85°C for MAX4503EUK-T | Not rated for extended industrial environments; unsuitable for automotive under-hood or outdoor deployments | Select MAX4503EUK-T for designs requiring guaranteed performance across -40°C to +85°C ambient. |
| ADG1201BRJZ-REEL7 | Single-supply only (10.8V to 13.2V), 125Ω RON, but requires ground pin and lacks dual-supply flexibility | Cannot replace MAX4503EUK-T in ±1.5V or ±3V split-rail systems; incompatible with ground-free architectures | Choose only if system uses single positive supply and ground reference is available; not a drop-in replacement. |
Compared with MAX4503CUK+T, the MAX4503EUK-T adds extended temperature support essential for industrial reliability; versus ADG1201BRJZ-REEL7, it provides unique dual-supply operation without ground-critical for isolated or battery-powered signal chains where supply asymmetry exists.
Availability
MAX4503EUK-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 industrial 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 consumer applications.
The MAX4503EUK-T belongs to Maxim's low-voltage analog switch family engineered for rail-to-rail signal integrity in space-constrained, battery-sensitive systems - emphasizing ultra-low leakage, minimal charge injection, and ground-free dual-supply operation.
FAQ
What is the maximum allowable analog signal voltage range for the MAX4503EUK-T?
The MAX4503EUK-T supports rail-to-rail analog signals from V− to V+, meaning the signal must stay within the bounds of its negative and positive supply voltages. With ±5V supplies, the valid range is −5V to +5V; with ±3V supplies, it is −3V to +3V. Exceeding these limits forward-biases internal ESD diodes and risks damage or increased leakage - the MAX4503EUK-T does not support overvoltage protection beyond its supply rails.
Does the MAX4503EUK-T require a ground connection to operate?
No, the MAX4503EUK-T has no ground pin and operates using only V+ and V− supply connections. Its digital input is internally referenced to V+, and logic thresholds scale accordingly - for example, with V+ = +3V and V− = −3V, a logic HIGH is ≥1.5V relative to V−. This architecture enables true floating operation in isolated or split-rail systems where ground is unavailable or noisy.
Can the MAX4503EUK-T be used with single-supply operation?
The MAX4503EUK-T is designed specifically for dual-supply operation (±1V to ±6V) and is not characterized for single-supply use. For single-supply applications, Maxim recommends the pin-compatible MAX4501/MAX4502 series. Attempting single-supply operation on the MAX4503EUK-T may result in undefined logic behavior, degraded RON, or excessive leakage due to unbalanced ESD diode biasing.
What is the guaranteed on-resistance (RON) specification for the MAX4503EUK-T across temperature?
The MAX4503EUK-T guarantees RON ≤250Ω at ±5V supplies and TA = +25°C. Over the full −40°C to +85°C operating range, RON increases but remains within 350Ω (typical curves show ~280Ω at +85°C). This specification ensures predictable channel resistance in precision gain-setting or filtering applications without requiring external calibration.
How does charge injection affect system performance when using the MAX4503EUK-T?
Charge injection in the MAX4503EUK-T is guaranteed ≤10pC, causing a voltage glitch ΔV = Q/CL on capacitive nodes (e.g., sample-and-hold capacitors). In a 1000pF hold capacitor, this results in ≤10mV step error - manageable with settling time or correction algorithms. The MAX4503EUK-T's low value minimizes distortion in audio paths and quantization errors in high-resolution ADC front-ends.
MAX4503EUK-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Switch Circuit:
- SPST - NC
- 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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