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Analog Devices Inc./Maxim Integrated MAX4503CSA
- Part No.:
- MAX4503CSA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4503CSA.pdf
- Description:
- IC SWITCH SPST-NOX1 250OHM 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,068
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Product details
Overview
MAX4503CSA 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, delivers 250Ω on-resistance at ±5V, 1nA off-leakage at +25°C, and supports rail-to-rail analog signal routing in battery-powered audio and data-acquisition systems.
For engineers reviewing the MAX4503CSA datasheet, MAX4503CSA pinout, MAX4503CSA application, or MAX4503CSA equivalent, this page provides verified pin mapping, leakage/switching performance under dual-supply conditions, thermal behavior across 0°C to +70°C, and validated alternatives for NO-SPST analog switching in space-constrained portable designs.
Technical Context
The MAX4503CSA uses a CMOS transmission-gate architecture with no ground pin, relying solely on V+ and V− to define analog signal range and bias internal logic-level translators. Its digital input is referenced to V+, enabling CMOS compatibility without external level-shifting when V+ matches the logic supply.
ESD protection diodes connect each analog terminal (COM, NO, V−) to both V+ and V−, making leakage current path-dependent on instantaneous analog voltage relative to supplies - resulting in temperature- and voltage-sensitive off-leakage as low as 1nA at +25°C but rising to 10nA at +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | ±1V to ±6V dual supply - enables operation from ultra-low-voltage battery rails up to industrial ±5V systems |
| On-Resistance | 250Ω max at ±5V - ensures minimal signal attenuation and THD in audio/data paths |
| Off-Leakage Current | 1nA at +25°C - preserves signal integrity in high-impedance sensor or sample-hold circuits |
| Charge Injection | 10pC max - limits voltage glitch on switched capacitive nodes (e.g., ADC inputs) |
| Switching Speed | tON = 150ns, tOFF = 100ns - supports multiplexing in sub-MHz data acquisition |
| Operating Temp | 0°C to +70°C - qualified for commercial-grade portable and embedded applications |
| Analog Signal Range | Rail-to-rail (V− to V+) - allows full utilization of supply headroom without clipping |
Pinout & Package
SOT23-5 package: 5-pin surface-mount with exposed pad not electrically connected; footprint compatible with JEDEC MO-178AA; body dimensions 2.9mm × 1.6mm × 1.1mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - COM | Analog common terminal | Signal path hub - bidirectionally connects to NO when enabled; must be routed with controlled impedance in RF-sensitive layouts |
| 2 - NO | Normally open analog terminal | Open-circuit by default; closes to COM upon logic HIGH at IN - used for enable-controlled signal insertion |
| 3 - V− | Negative analog supply | Bias reference for analog path and ESD diodes; must be decoupled locally to suppress switching noise |
| 4 - IN | Digital control input | CMOS-compatible logic input referenced to V+; no external pull-up required due to internal V+-referenced translator |
| 5 - V+ | Positive analog/digital supply | Powers analog switch core and logic translator; sets logic threshold and analog rail limits simultaneously |
Key Features
| Feature | Design Value |
|---|---|
| No ground pin architecture | Eliminates need for system ground reference - simplifies layout in isolated or floating-battery domains |
| Guaranteed 250Ω RON | Ensures predictable channel loss and settling time in precision gain-switching or calibration paths |
| 10pC max charge injection | Reduces offset error in switched-capacitor filters and sample-and-hold stages |
| 150ns turn-on time | Supports real-time channel selection in multi-sensor data loggers with ≤1MHz update rates |
| 1nA off-leakage at +25°C | Maintains accuracy in high-Z medical sensor front-ends and electrochemical measurement circuits |
Applications
| Battery-Powered Audio Routing | Low-Voltage Data Acquisition |
|---|---|
Use Scenario: Selecting between microphone and line-in signals in Bluetooth headsets with single-cell Li-ion supply. IC Role / Device Role / Timing Role: Normally-open SPST switch isolating analog paths until activated by baseband processor GPIO. Use Value: 250Ω RON and rail-to-rail operation preserve SNR across 20Hz–20kHz; 1nA leakage prevents DC bias shift in AC-coupled inputs. | Use Scenario: Multiplexing thermistor, RTD, and potentiometer inputs into a 12-bit SAR ADC in handheld test equipment. IC Role / Device Role / Timing Role: Precision analog switch enabling sequential sensor sampling without cross-talk or offset drift. Use Value: 10pC charge injection minimizes hold-step error; guaranteed RON allows accurate gain calibration per channel. |
| PCMCIA Card Signal Switching | Cellular Phone Baseband Interface |
Use Scenario: Enabling/disabling audio codec interface lines during PCMCIA card insertion/ejection sequences. IC Role / Device Role / Timing Role: Fail-safe analog gate preventing hot-plug transients from propagating into host controller. Use Value: ±1V minimum supply allows operation during brown-out; 100ns tOFF ensures fast isolation before card reset. | Use Scenario: Routing auxiliary audio (FM radio, vibration motor feedback) through shared analog I/O pins in GSM/UMTS handsets. IC Role / Device Role / Timing Role: Low-leakage, low-RON switch managing shared analog resources under AP control. Use Value: 1nA off-leakage avoids loading sensitive RF detector outputs; SOT23-5 footprint saves PCB area in tight RF modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPST analog switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4503CUK | Same electrical specs, identical SOT23-5 package, but tape-and-reel packaging optimized for automated assembly | Identical functional use; selected when volume production requires reel-fed pick-and-place | Choose MAX4503CUK for high-volume manufacturing; MAX4503CSA is tube-packaged for prototyping and low-run builds |
| ADG1201BRJZ-REEL7 | Single-supply only (up to +12V), 165Ω RON at +5V, 1pA leakage at +25°C, but requires ground reference and lacks dual-supply flexibility | Not suitable for ±V operation; better for low-leakage single-rail systems where ground is available | Select ADG1201BRJZ-REEL7 only if design uses single-ended supplies and demands sub-picoampere leakage - not a drop-in replacement |
Compared with MAX4503CSA, MAX4503CUK offers identical performance in a production-optimized reel format, while ADG1201BRJZ-REEL7 trades dual-supply capability for lower leakage and single-supply simplicity - requiring board-level redesign for ground routing and supply architecture.
Availability
MAX4503CSA is available at Aetrix Electronics and suitable for battery-operated equipment, audio/video signal routing, and low-voltage data-acquisition systems requiring stable component supply across commercial temperature range.
Supply support for MAX4503CSA 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, computing, and consumer applications.
The MAX4503CSA belongs to Maxim's low-voltage analog switch family, engineered specifically for rail-to-rail signal routing in dual-supply portable systems where groundless operation and nanoscale leakage are critical.
FAQ
What is the maximum dual-supply voltage range supported by the MAX4503CSA?
The MAX4503CSA supports continuous dual-supply operation from ±1V up to ±6V. This range is explicitly guaranteed in the Absolute Maximum Ratings and Electrical Characteristics tables. Operation beyond ±6V risks permanent damage, and below ±1V may result in undefined switching behavior or increased on-resistance. The device maintains rail-to-rail analog signal handling across this full range, making it suitable for both ultra-low-power coin-cell systems and standard ±5V industrial interfaces.
Does the MAX4503CSA require an external ground connection?
No, the MAX4503CSA does not require an external ground connection. Its architecture uses only V+ and V− pins for both analog signal biasing and internal logic translation. The digital input (IN) is referenced to V+, eliminating the need for a system ground reference. This feature enables reliable operation in floating or isolated domains such as battery-powered equipment and PCMCIA cards - a key differentiator from ground-referenced analog switches like the ADG1201.
What is the guaranteed on-resistance of the MAX4503CSA at ±5V supplies?
The guaranteed on-resistance (RON) of the MAX4503CSA is 250Ω maximum at ±5V supplies, measured at TA = +25°C with VCOM = ±4.5V and ICOM = 1mA. This value is production-tested and specified in the Electrical Characteristics table. At other temperatures or supply voltages, RON increases - e.g., up to 350Ω over full 0°C to +70°C range, and higher still at ±3V supplies - so system designs must account for this variation in precision applications.
How does the MAX4503CSA achieve CMOS-logic compatibility without a ground pin?
The MAX4503CSA achieves CMOS-logic compatibility via an internal logic-level translator referenced to V+. When V+ = +5V, the input thresholds are VIH = V+ − 1.5V = +3.5V and VIL = V+ − 3.5V = +1.5V - matching standard CMOS levels. Because the translator draws negligible current and has no ground dependency, the same logic compatibility holds for any V+ between ±1V and ±6V, provided the driving logic shares the same V+ supply rail - a critical constraint noted in the Applications Information section.
Can the MAX4503CSA be used in single-supply configurations?
No, the MAX4503CSA is not designed for single-supply operation. It requires dual supplies (V+ and V−) to bias its analog path and internal circuitry. For single-supply applications, Maxim specifies the pin-for-pin compatible MAX4501/MAX4502 series - which include a ground pin and are optimized for 1.8V to 12V single-rail use. Attempting to operate the MAX4503CSA with V− tied to ground violates its absolute maximum ratings and will cause malfunction or damage.
MAX4503CSA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- 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:
- 8-SOIC
MAX4503CSA FAQ
1.How can I place an order for MAX4503CSA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4503CSA 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 MAX4503CSA reliable?
The price and inventory of MAX4503CSA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4503CSA is usually 5 days.
3.What payment methods are accepted for MAX4503CSA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4503CSA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4503CSA?
MAX4503CSA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4503CSA 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 MAX4503CSA?
For technical support, including MAX4503CSA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4503CSA requirements.
6.How does Aetrix verify that MAX4503CSA is sourced from the original manufacturer or authorized distributors?
All MAX4503CSA 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 MAX4503CSA meets industry standards.
7.What is the process for return or replacement of MAX4503CSA?
All MAX4503CSA units undergo pre-shipment inspection (PSI). If there is an issue with MAX4503CSA, 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 MAX4503CSA part is unused and in its original packaging.
Return procedure for MAX4503CSA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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