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MAX4501CUK-T from MAXIM,MAXIM - Dallas Semiconductor

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MAX4501CUK-T

Manufacturer: MAXIM, MAX

Low-Voltage, SPST, CMOS Analog Switches

Partnumber Manufacturer Quantity Availability
MAX4501CUK-T,MAX4501CUKT MAXIM, MAX 93051 In Stock

Description and Introduction

Low-Voltage, SPST, CMOS Analog Switches The MAX4501CUK-T is a high-speed, low-voltage, CMOS analog switch manufactured by Maxim Integrated. Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:

### **Manufacturer:**  
Maxim Integrated  

### **Part Number:**  
MAX4501CUK-T  

### **Description:**  
The MAX4501CUK-T is a single-pole/single-throw (SPST) analog switch designed for high-speed, low-voltage applications. It is optimized for precision signal switching in portable and battery-powered systems.  

### **Key Features:**  
- **Low On-Resistance:** Typically 5Ω (max 10Ω) at +5V supply.  
- **Low Voltage Operation:** Operates from +2V to +12V single supply or ±2V to ±6V dual supply.  
- **Fast Switching Speed:**  
  - Turn-On Time: 35ns (typical)  
  - Turn-Off Time: 25ns (typical)  
- **Low Power Consumption:**  
  - Supply Current: <1μA (max)  
- **Break-Before-Make Switching:** Ensures no signal overlap during switching.  
- **High Off-Isolation:** -60dB at 1MHz.  
- **Low Charge Injection:** 10pC (typical).  
- **ESD Protection:** ±2000V (Human Body Model).  
- **Package:** SOT-23-5 (UCSP).  

### **Applications:**  
- Battery-Powered Systems  
- Audio and Video Signal Routing  
- Data Acquisition Systems  
- Communication Systems  
- Test Equipment  

This information is based solely on the manufacturer's datasheet and technical specifications.

Application Scenarios & Design Considerations

Low-Voltage, SPST, CMOS Analog Switches# Technical Documentation: MAX4501CUKT Precision, Low-Voltage, SPST Analog Switch

 Manufacturer : Maxim Integrated (now part of Analog Devices Inc.)

## 1. Application Scenarios

### Typical Use Cases
The MAX4501CUKT is a precision, single-pole/single-throw (SPST), normally open (NO) analog switch designed for low-voltage, high-accuracy signal routing applications. Its primary function is to connect or disconnect analog or digital signals under digital control with minimal distortion.

*    Signal Multiplexing & Routing:  In systems where a single analog-to-digital converter (ADC) or amplifier must sample multiple signal sources, the MAX4501CUKT acts as a precise selector. This is common in data acquisition systems, sensor arrays, and medical monitoring equipment.
*    Automatic Test Equipment (ATE):  Used for routing calibration signals, test stimuli, or measurement points with high repeatability and low error. Its low on-resistance flatness ensures signal integrity across the input range.
*    Battery-Powered/Portable Devices:  Its operation down to +1.8V and ultra-low power consumption make it ideal for handheld instruments, wearable health monitors, and IoT sensor nodes where power efficiency is critical.
*    Audio Signal Switching:  The device can be used for routing low-voltage audio signals (e.g., in headsets, portable audio players) with low distortion, thanks to its low total harmonic distortion (THD) and off-isolation.
*    Power Supply Gating:  Can be used to connect or disconnect low-voltage power rails or reference voltages to subsystems, enabling power sequencing or sleep modes.

### Industry Applications
*    Industrial Automation & Control:  Signal conditioning modules, PLC analog input cards, and process control instrumentation for switching sensor signals (thermocouples, RTDs, pressure transducers).
*    Communications:  Low-voltage RF signal routing in the front-end of software-defined radios (SDR) or for gain control path selection.
*    Medical Electronics:  Patient monitoring systems for lead-off detection, signal calibration, and multiplexing bio-potential signals (ECG, EEG) before amplification.
*    Consumer Electronics:  Feature selection in portable devices, internal diagnostic routing, and power management in smartphones/tablets.
*    Automotive (Non-Safety Critical):  Infotainment system signal routing and low-voltage sensor interfaces in cabin environments.

### Practical Advantages and Limitations
 Advantages: 
*    Low On-Resistance:  Typically 25Ω, minimizing signal attenuation and error.
*    Low On-Resistance Flatness:  Ensures consistent performance across the signal range, critical for precision applications.
*    Wide Analog Signal Range:  Handles signals from GND to V+ (rail-to-rail), maximizing dynamic range in low-supply systems.
*    Low Power Consumption:  Quiescent current is typically <0.1µA, ideal for battery operation.
*    Fast Switching:  Turn-On/Turn-Off times <150ns enable use in moderate-speed data acquisition.
*    Small Form Factor:  Available in a SOT23-5 package (MAX4501CUKT), saving board space.

 Limitations: 
*    SPST Configuration:  Offers only a single switch channel. Systems requiring multiplexing (e.g., 4:1) need multiple devices or a different part.
*    Current Handling:  Not suitable for switching high currents; absolute maximum continuous current is 30mA.
*    Voltage Range:  Limited to a maximum supply voltage of +5.5V. Not suitable for industrial ±15V signal levels.
*    Charge Injection:  While low (~5pC typical), it can introduce glitches in very high-impedance or high-precision sample-and-hold circuits.

## 2. Design Considerations

Alternative Part Number

  • TS12A4514DBVR --: Pin-compatible SPST analog switch in SOT-23-5 with similar low on-resistance and single-supply operation, widely available and cost-effective.
  • ADG419BRMZ --: Low on-resistance SPDT analog switch usable as a drop-in functional replacement in small packages, with comparable signal range and low leakage.
  • DG419LDY --: Similar analog switch function with low charge injection and low on-resistance, suitable for signal routing where the MAX4501 is used.
  • ADG419BRTZ-REEL7 --: Pin-compatible SPDT analog switch in SOT-23-5 with similar low on-resistance and single-supply operation, widely available and a common drop-in replacement for the MAX4501.
  • TS5A3157DBVR --: Low-voltage SPDT analog switch in SOT-23-5 with comparable Ron and switching characteristics, offered by a second source at lower cost.
  • NLAS4157DFT2G --: SPDT analog switch in a small SOT-23 package with similar signal range and low on-resistance, suitable as a cost-effective alternate source.

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