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MAX4524CUB from MAXIM,MAXIM - Dallas Semiconductor

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MAX4524CUB

Manufacturer: MAXIM, MAX

Low-Voltage / Single-Supply Multiplexer and Switch

Partnumber Manufacturer Quantity Availability
MAX4524CUB MAXIM, MAX 7933 In Stock

Description and Introduction

Low-Voltage / Single-Supply Multiplexer and Switch The MAX4524CUB is a high-speed, low-voltage, single-supply analog switch manufactured by Maxim Integrated (now part of Analog Devices). Below are its specifications, descriptions, and features based on Ic-phoenix technical data files:

### **Specifications:**  
- **Manufacturer:** Maxim Integrated (now Analog Devices)  
- **Part Number:** MAX4524CUB  
- **Type:** High-Speed, Low-Voltage, Single-Supply Analog Switch  
- **Configuration:** Single SPDT (Single-Pole Double-Throw)  
- **Supply Voltage Range:** +2.7V to +12V (Single Supply)  
- **On-Resistance (RON):** 25Ω (typical at +5V supply)  
- **On-Resistance Matching:** 2Ω (typical)  
- **Charge Injection:** 10pC (typical)  
- **Bandwidth (-3dB):** 200MHz (typical)  
- **Switching Time (tON / tOFF):** 35ns / 20ns (typical)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 10-pin µMAX (UCSP)  

### **Descriptions:**  
The MAX4524CUB is a high-performance, single-pole double-throw (SPDT) analog switch designed for low-voltage, high-speed signal switching applications. It features low on-resistance, fast switching times, and minimal charge injection, making it suitable for precision signal routing in data acquisition, communication systems, and test equipment.  

### **Features:**  
- **Single-Supply Operation:** Works from +2.7V to +12V.  
- **Low On-Resistance:** 25Ω (typical at +5V).  
- **High Bandwidth:** 200MHz (-3dB) for high-speed signal switching.  
- **Fast Switching:** 35ns turn-on, 20ns turn-off.  
- **Low Charge Injection:** 10pC reduces glitches in sensitive circuits.  
- **TTL/CMOS-Compatible Logic Inputs:** Ensures easy interfacing with digital controllers.  
- **ESD Protection:** Up to 2kV (Human Body Model).  
- **Compact Package:** 10-pin µMAX (UCSP) for space-constrained applications.  

This information is strictly based on the manufacturer's datasheet and technical documentation.

Application Scenarios & Design Considerations

Low-Voltage / Single-Supply Multiplexer and Switch# Technical Documentation: MAX4524CUB Precision, Low-Voltage, SPST Analog Switch

 Manufacturer : Maxim Integrated (now part of Analog Devices)

## 1. Application Scenarios

### Typical Use Cases
The MAX4524CUB is a precision, single-pole/single-throw (SPST), normally closed (NC) analog switch designed for low-voltage, high-accuracy signal routing applications. Its primary function is to connect or disconnect analog or digital signals in a circuit with minimal distortion and power consumption.

*    Signal Multiplexing & Routing:  Frequently used to select between multiple sensor inputs (e.g., thermocouples, strain gauges) for a single analog-to-digital converter (ADC) channel in data acquisition systems (DAQs).
*    Automatic Test Equipment (ATE):  Employed in channel switching, load switching, and signal conditioning paths where low on-resistance (\(R_{ON}\)) and high off-isolation are critical for measurement fidelity.
*    Battery-Powered/Portable Devices:  Ideal for power management functions such as connecting backup batteries, selecting power sources, or disabling unused circuit blocks to conserve energy, thanks to its low operating voltage (down to +2V) and minimal supply current.
*    Audio Signal Routing:  Used in low-voltage audio equipment for input selection, mute functions, or effects loop switching, benefiting from its low charge injection which minimizes audible clicks and pops.
*    Programmable Gain Amplifiers (PGAs):  Serves as a precision element in feedback networks to switch between different gain-setting resistors.

### Industry Applications
*    Industrial Automation & Control:  Sensor interface modules, PLC analog input cards, and process control instrumentation.
*    Medical Electronics:  Portable diagnostic devices, patient monitoring equipment, and low-power biomedical sensor interfaces.
*    Communications Systems:  Low-voltage RF signal switching in handheld radios and baseband processing units.
*    Consumer Electronics:  Smartphones, tablets, and wearables for audio/power management and accessory detection circuits.
*    Automotive Electronics:  Non-critical sensor interfaces and infotainment systems within its specified temperature range.

### Practical Advantages and Limitations
 Advantages: 
*    Low On-Resistance:  Typically 25Ω (max) ensures minimal signal attenuation and voltage error.
*    Low Power Consumption:  Operates from a single +2V to +12V supply or dual ±2V to ±6V supplies with very low quiescent current.
*    High Precision:  Low charge injection (<5 pC) and fast switching speeds (tON <150ns) preserve signal integrity.
*    Rail-to-Rail Signal Handling:  The analog signal can swing from V- to V+, maximizing dynamic range in low-voltage systems.
*    TTL/CMOS Logic Compatible:  Digital control inputs are easy to interface with modern microcontrollers and FPGAs.

 Limitations: 
*    SPST Configuration:  The single switch channel limits functionality compared to multiplexer or multi-channel switch ICs.
*    Current Handling:  Not suitable for switching high currents; maximum continuous current is typically 30mA.
*    Voltage Range:  Limited to a maximum supply of ±6V or +12V, excluding it from higher-voltage industrial applications.
*    Charge Injection:  While low, it can still introduce glitches in very high-impedance or high-speed sampling circuits.

## 2. Design Considerations

### Common Design Pitfalls and Solutions
*    Pitfall 1: Inadequate Bypassing.  This leads to power supply noise coupling into the analog signal path, causing increased distortion or erroneous switching.
    *    Solution:  Place a 0.1µF ceramic capacitor as close as possible between the V+ and V- pins (or V+ and GND for single-supply). A larger

Alternative Part Number

  • ADG608BRUZ --: Pin-compatible CMOS analog multiplexer with similar on-resistance and supply range, widely available and a common drop-in replacement for MAX4524 designs.
  • DG408DJ --: 8-channel CMOS analog multiplexer with comparable Ron and switching characteristics, suitable for signal routing applications requiring the MAX4524 function.
  • CD4051BM --: Low-cost 8-channel analog multiplexer/demultiplexer with similar channel count and logic interface, usable where slightly higher on-resistance is acceptable.
  • ADG704BRMZ --: Pin-compatible CMOS analog multiplexer with similar on-resistance and supply range, widely available and a common drop-in substitute.
  • DG408DJZ --: 8-channel CMOS analog multiplexer offering comparable switching characteristics and a different series naming, suitable for similar signal routing.

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