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MAX4519CSD from MAXIM,MAXIM - Dallas Semiconductor

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MAX4519CSD

Manufacturer: MAXIM, MAX

Precision, 4-Channel/Dual 2-Channel, Low-Voltage, CMOS Analog Multiplexers

Partnumber Manufacturer Quantity Availability
MAX4519CSD MAXIM, MAX 44 In Stock

Description and Introduction

Precision, 4-Channel/Dual 2-Channel, Low-Voltage, CMOS Analog Multiplexers The MAX4519CSD is a high-speed, low-voltage, CMOS analog multiplexer (MUX) manufactured by Maxim Integrated. Below are its key specifications, descriptions, and features:

### **Manufacturer:**  
Maxim Integrated  

### **Part Number:**  
MAX4519CSD  

### **Package:**  
SOIC-14  

### **Description:**  
The MAX4519CSD is a high-speed, low-voltage, CMOS analog multiplexer designed for precision signal routing in low-voltage systems. It provides low on-resistance and fast switching speeds, making it suitable for data acquisition, audio/video switching, and communication systems.  

### **Key Features:**  
- **Low On-Resistance:** Typically **5Ω** (max **20Ω**) at **V+ = 5V**  
- **Low Voltage Operation:** **±2V to ±6V Dual Supply** or **+2V to +12V Single Supply**  
- **Fast Switching Speed:** **tON = 150ns**, **tOFF = 100ns**  
- **Low Power Consumption:** **<1μA** supply current  
- **Break-Before-Make Switching:** Prevents signal overlap during switching  
- **High Off-Isolation:** **-80dB at 1MHz**  
- **Low Charge Injection:** **10pC**  
- **TTL/CMOS-Compatible Logic Inputs**  
- **ESD Protection:** **≥2000V Human Body Model (HBM)**  

### **Applications:**  
- Data acquisition systems  
- Audio and video signal routing  
- Communication systems  
- Test and measurement equipment  
- Battery-powered devices  

This device is designed for high-performance signal switching in low-voltage applications, ensuring minimal distortion and fast response times.

Application Scenarios & Design Considerations

Precision, 4-Channel/Dual 2-Channel, Low-Voltage, CMOS Analog Multiplexers# Technical Documentation: MAX4519CSD Precision, Low-Voltage, SPST Analog Switch

 Manufacturer : Maxim Integrated (now part of Analog Devices Inc.)
 Component : MAX4519CSD
 Description : Precision, Low-Voltage, Single-Pole/Single-Throw (SPST) Analog Switch
 Package : 14-Pin SOIC (CSD)

---

## 1. Application Scenarios

### Typical Use Cases
The MAX4519CSD is a precision, monolithic, CMOS analog switch designed for low-voltage, high-accuracy signal routing applications. Its primary use cases involve the switching and multiplexing of analog signals in systems where signal integrity and low power consumption are critical.

*    Signal Multiplexing:  The device is ideal for multiplexing multiple analog input signals (e.g., from sensors, transducers, or audio sources) onto a single analog-to-digital converter (ADC) input channel. This is common in data acquisition systems (DAQs) where channel count must be maximized without compromising accuracy.
*    Sample-and-Hold Circuits:  Its low charge injection (5 pC, typ) and low on-resistance (35 Ω, typ) make it suitable for the switching element in precision sample-and-hold amplifiers, minimizing errors during the acquisition phase.
*    Audio and Video Signal Routing:  Used in low-voltage audio/video equipment for routing signals between different processing blocks, such as selecting inputs for an amplifier or routing signals to record/playback circuits.
*    Battery-Powered System Switching:  Its low supply voltage operation (as low as ±2.7V or +2.7V to +12V) and low power consumption make it a prime candidate for portable, handheld medical devices, test equipment, and communication devices where power budgets are tight.
*    Automatic Test Equipment (ATE) & Instrumentation:  Employed in relay replacement modules for switching test signals to devices under test (DUTs), benefiting from faster switching speeds, longer lifespan, and smaller footprint compared to mechanical relays.

### Industry Applications
*    Portable Medical Electronics:  Glucose meters, portable monitors, and diagnostic pods use the MAX4519CSD for sensor signal multiplexing and low-leakage current switching.
*    Industrial Process Control:  In 4-20mA current loop monitoring, PLC analog input modules, and environmental sensor arrays where reliable, precision switching under varying conditions is required.
*    Communications Infrastructure:  Low-voltage signal routing in RF front-end modules and baseband processing units.
*    Consumer Audio/Video:  Signal source selection in battery-operated mixers, portable media players, and conference systems.
*    Automotive Sensor Interfaces:  Non-critical sensor signal multiplexing in infotainment or comfort control systems (note: not typically for safety-critical applications unless specifically qualified).

### Practical Advantages and Limitations
 Advantages: 
*    High Precision:  Features very low on-resistance flatness (4 Ω, typ) and low charge injection, preserving signal fidelity.
*    Wide Voltage Range:  Operates from a single +2.7V to +12V supply or dual ±2.7V to ±6V supplies, offering design flexibility.
*    Low Power Consumption:  Typically draws <0.5 µA of supply current, ideal for battery-powered applications.
*    Fast Switching:  Turn-on/turn-off times of 150 ns (max) enable use in moderate-speed data acquisition.
*    TTL/CMOS Logic Compatible:  Digital control inputs are compatible with standard logic levels, simplifying interface design.

 Limitations: 
*    Signal Range Constraint:  The analog signal must remain within the supply rails (V+ and V-). Signals exceeding these rails can cause latch-up or damage.
*    Bandwidth Limitation:  On-resistance and off-capacitance form

Alternative Part Number

  • DG409DY --: Pin-compatible dual 4:1 analog multiplexer with similar on-resistance and supply range, widely available and often used as a drop-in replacement.
  • ADG409BRZ --: Dual 4:1 CMOS analog multiplexer with comparable Ron and switching characteristics, suitable for the same signal-routing applications.
  • CD4052BE --: Low-cost dual 4-channel analog multiplexer/demultiplexer with similar function, though with higher on-resistance; acceptable for less critical designs.

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