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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:2,276
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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. It operates with ±1V to ±6V supplies, supports rail-to-rail analog signals up to ±5.5V, delivers 250Ω on-resistance at ±5V, and exhibits only 1nA off-leakage at +25°C - ideal for 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, this page provides verified technical context, real-world switching performance metrics, thermal leakage behavior across temperature, SOT23-5 terminal mapping, and functionally comparable alternatives for low-voltage analog path control.
Technical Context
The MAX4503CUK-T uses a fully differential CMOS switch architecture with no ground pin, relying solely on V+ and V− to define analog signal rails and bias internal logic-level translators. Its digital input is referenced to V+, enabling CMOS compatibility without external level-shifting even under asymmetric supply conditions.
Each switch channel features matched ESD diodes to V+ and V− on COM, NO, and IN pins, with leakage current determined by the voltage differential across those diodes - explaining the specified 1nA (25°C) and 10nA (85°C) off-leakage limits. Charge injection is tightly controlled at ≤10pC, critical for sample-hold and multiplexer accuracy.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | ±1V to ±6V dual supply - enables operation from ultra-low-voltage battery rails (e.g., ±1.2V Li-ion) up to industrial ±5V systems |
| On-Resistance (RON) | 250Ω max at ±5V, +25°C - ensures minimal signal attenuation and THD impact in audio and sensor paths |
| Off-Leakage Current | 1nA max at +25°C, 10nA max at +85°C - preserves DC accuracy in high-impedance sensor front-ends and precision integrators |
| Charge Injection | ≤10pC - limits voltage glitch on sampled nodes, supporting <12-bit accuracy in data-acquisition multiplexers |
| Switching Speed | tON = 150ns, tOFF = 100ns - suitable for multiplexing up to ~1MHz analog signals with minimal settling delay |
| Analog Signal Range | Rail-to-rail: V− to V+ - allows full utilization of supply headroom for ±4.5V signal swing with ±5V supplies |
| Logic Compatibility | CMOS-input referenced to V+ - eliminates need for external level shifters when driving from same-supply microcontrollers |
Pinout & Package
SOT23-5 package: 5-pin, surface-mount, 1.6mm × 2.9mm body, 0.95mm height, lead pitch 0.95mm. 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 control state |
| 2 - NO | Normally open analog terminal | Open-circuit when IN = LOW; closed to COM when IN = HIGH - defines default-off signal path |
| 3 - V− | Negative analog supply | Sets lower rail for analog signal range and biases internal ESD diodes and switch transistors |
| 4 - IN | Digital control input | CMOS-compatible logic input referenced to V+; no ground connection required |
| 5 - V+ | Positive analog/digital supply | Sets upper rail for analog signals and powers internal logic translator and gate drivers |
Key Features
| Feature | Design Value |
|---|---|
| No ground pin required | Enables true floating dual-supply operation - simplifies PCB layout in isolated or split-rail systems |
| Guaranteed 250Ω RON | Ensures predictable gain error and channel matching in multi-channel analog mux designs |
| 10pC max charge injection | Reduces hold-step error in sample-and-hold circuits, supporting 12-bit+ resolution without trimming |
| 1nA off-leakage at 25°C | Maintains >1GΩ effective off-isolation for DC-coupled sensor interfaces and medical electrode monitoring |
| 150ns turn-on time | Supports time-multiplexed signal acquisition at up to 1 MSPS with <1 LSB settling in 12-bit systems |
Applications
| Battery-Powered Audio Routing | Low-Voltage Data Acquisition |
|---|---|
|
Use Scenario: Selecting between microphone inputs or headphone outputs in portable audio devices powered by single-cell Li-ion with ±2.5V charge-pump rails. IC Role / Device Role / Timing Role: SPST analog switch controlling signal path continuity; timing-critical during mode transitions to avoid pop/click artifacts. Use Value: 150ns tON and rail-to-rail ±2.5V operation enable clean, fast audio path switching without external biasing or level shifters. |
Use Scenario: Multiplexing thermocouple, RTD, or bridge sensor outputs into a 16-bit SAR ADC in handheld test equipment. IC Role / Device Role / Timing Role: Precision analog switch isolating high-impedance sensor nodes; off-leakage directly impacts offset drift and long-term stability. Use Value: 1nA off-leakage at 25°C and guaranteed 250Ω RON minimize gain/offset errors and ensure consistent channel-to-channel matching. |
| PCMCIA Card Signal Switching | Cellular RF Front-End Control |
|
Use Scenario: Isolating legacy parallel interface lines (e.g., I/O, address) during hot-plug insertion of PCMCIA cards in industrial laptops. IC Role / Device Role / Timing Role: Voltage-tolerant analog switch protecting host controller from transient overvoltage during card insertion/removal. Use Value: ±6V absolute maximum rating and internal ESD diodes to V+/V− provide robust protection without external clamps. |
Use Scenario: Routing antenna diversity paths or band-select signals in GSM/UMTS handset RF modules operating from ±2.75V LDO rails. IC Role / Device Role / Timing Role: Low-capacitance SPST switch minimizing insertion loss and harmonic distortion in 800–2100MHz receive chains. Use Value: 3pF typical COFF and -65dB off-isolation at 100kHz support clean RF signal separation without added filtering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPST analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4503EUK-T | Same circuit, extended temperature range (-40°C to +85°C) vs. MAX4503CUK-T (0°C to +70°C); identical SOT23-5 pinout and electrical specs | Suitable for automotive cabin modules or industrial controllers requiring wider thermal margin | Select MAX4503EUK-T when ambient operating temperature exceeds +70°C or requires AEC-Q200 alignment |
| ADG1201BRMZ-REEL7 | Single-supply only (up to +12V), 180Ω RON at +5V, 0.5pC charge injection, but requires ground reference and lacks dual-supply capability | Applicable only in unipolar systems; cannot replace MAX4503CUK-T in true bipolar ±V applications | Choose ADG1201BRMZ-REEL7 only for cost-sensitive, single-rail designs where dual-supply operation is unnecessary |
Compared with MAX4503CUK-T, MAX4503EUK-T offers identical functionality with enhanced thermal reliability, while ADG1201BRMZ-REEL7 trades dual-supply flexibility for lower charge injection and single-rail simplicity - making it unsuitable as a drop-in replacement in ±V signal chains.
Availability
MAX4503CUK-T is available at Aetrix Electronics and suitable for battery-operated equipment, low-voltage data-acquisition systems, and cellular phone signal routing requiring stable component supply across commercial temperature grades.
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 demanding industrial, medical, and communications applications.
The MAX4503CUK-T belongs to Maxim's low-voltage analog switch family, engineered specifically for rail-to-rail signal integrity in dual-supply portable systems where groundless operation and nanoscale leakage control are essential.
FAQ
What is the maximum allowable supply voltage for MAX4503CUK-T?
The MAX4503CUK-T supports dual supplies from ±1V to ±6V. Absolute maximum ratings specify V+ up to +13V relative to V−, but continuous operation beyond ±6V violates the guaranteed specifications and risks exceeding safe junction temperature. For reliable long-term use, stay within the ±1V to ±6V operating range documented in the datasheet.
Does MAX4503CUK-T require a ground connection?
No, the MAX4503CUK-T has no ground pin. Its digital input is internally referenced to V+, and analog signal rails are defined solely by V+ and V−. This enables true floating operation in isolated or split-rail systems - a key differentiator from most single-supply analog switches that mandate a ground reference.
Can MAX4503CUK-T be used with single-supply systems?
The MAX4503CUK-T is designed for dual-supply operation. For single-supply applications, Maxim recommends the pin-for-pin compatible MAX4501/MAX4502 series. Attempting single-supply use with MAX4503CUK-T (e.g., tying V− to GND) violates its specified operating conditions and may cause undefined logic behavior or excessive leakage.
What is the guaranteed on-resistance for MAX4503CUK-T at ±3V supplies?
At ±3V supplies, the MAX4503CUK-T guarantees an on-resistance of 400Ω maximum (typical 100Ω) at +25°C. This is higher than the 250Ω spec at ±5V due to reduced gate overdrive - a critical consideration when designing low-distortion audio paths or precision sensor interfaces at lower voltages.
How does charge injection affect system performance with MAX4503CUK-T?
With ≤10pC guaranteed charge injection, the MAX4503CUK-T introduces minimal voltage glitch on sampled nodes: ΔV = Q/CL. For example, with a 100pF hold capacitor, the step error is ≤100mV - manageable in 10-bit systems but requiring careful capacitor sizing or calibration in 12-bit+ data acquisition. Layout minimization of stray capacitance further reduces effective error.
MAX4503CUK-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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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