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ADG507AKN from AD,Analog Devices

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ADG507AKN

Manufacturer: AD

CMOS 8-/16-Channel Analog Multiplexers

Partnumber Manufacturer Quantity Availability
ADG507AKN AD 325 In Stock

Description and Introduction

CMOS 8-/16-Channel Analog Multiplexers The ADG507AKN is a monolithic CMOS analog multiplexer manufactured by Analog Devices. It features 8 channels and is designed for applications requiring high performance and reliability. Key specifications include:

- **Number of Channels**: 8
- **On-Resistance (Ron)**: 85 Ω (typical)
- **On-Resistance Match (ΔRon)**: 5 Ω (typical)
- **On-Resistance Flatness (Ron Flatness)**: 15 Ω (typical)
- **Supply Voltage Range**: ±4.5 V to ±18 V (dual supply), 9 V to 36 V (single supply)
- **Operating Temperature Range**: -40°C to +85°C
- **Package**: 28-Lead PLCC (Plastic Leaded Chip Carrier)
- **Switching Time (tON)**: 250 ns (typical)
- **Off Isolation**: -80 dB (typical) at 1 MHz
- **Crosstalk**: -80 dB (typical) at 1 MHz
- **Power Consumption**: 1.5 mW (typical)

The ADG507AKN is suitable for use in data acquisition systems, audio and video switching, and communication systems.

Application Scenarios & Design Considerations

CMOS 8-/16-Channel Analog Multiplexers# ADG507AKN Technical Documentation

## 1. Application Scenarios

### Typical Use Cases
The ADG507AKN is a monolithic CMOS analog multiplexer featuring  8-channel single-ended  configuration with break-before-make switching action. Typical applications include:

-  Data Acquisition Systems : Channel selection for multi-sensor inputs in industrial monitoring equipment
-  Automated Test Equipment : Signal routing between multiple instruments and devices under test
-  Communication Systems : Audio/video signal switching in broadcast and telecommunications equipment
-  Medical Instrumentation : Patient monitoring system signal routing with low leakage requirements
-  Process Control Systems : Multi-point measurement and control signal distribution

### Industry Applications
-  Industrial Automation : PLC I/O expansion, sensor array management
-  Aerospace/Avionics : Flight data acquisition, navigation system signal routing
-  Automotive Electronics : Diagnostic equipment, infotainment system switching
-  Consumer Electronics : Professional audio equipment, high-end measurement instruments
-  Laboratory Equipment : Precision measurement systems, calibration equipment

### Practical Advantages and Limitations

 Advantages: 
-  Low Power Consumption : Typical supply current of 0.3μA (max 5μA) enables battery-operated applications
-  High Reliability : 1000V ESD protection per MIL-STD-883 Method 3015.7
-  Fast Switching : Turn-on time of 250ns max, turn-off time of 150ns max
-  Low On-Resistance : 300Ω maximum at ±15V supplies
-  Wide Voltage Range : Operates with ±4.5V to ±18V dual supplies or +9V to +36V single supply

 Limitations: 
-  Channel-to-Channel Matching : ±4Ω maximum difference may affect precision applications
-  Temperature Dependency : On-resistance increases by approximately 0.5%/°C
-  Charge Injection : 10pC typical may affect sensitive analog circuits
-  Bandwidth Limitation : -3dB bandwidth of 15MHz may not suit high-frequency applications

## 2. Design Considerations

### Common Design Pitfalls and Solutions

 Pitfall 1: Supply Sequencing Issues 
-  Problem : Applying analog signals before power supplies can cause latch-up
-  Solution : Implement power-on reset circuits and ensure supplies stabilize before signal application

 Pitfall 2: Signal Level Exceedance 
-  Problem : Input signals exceeding supply rails can damage internal protection diodes
-  Solution : Add external clamping diodes or series resistors for overvoltage protection

 Pitfall 3: Charge Injection Effects 
-  Problem : Switching transients corrupting sensitive analog signals
-  Solution : Use low-pass filtering on output, implement dummy switches for charge cancellation

 Pitfall 4: Crosstalk Between Channels 
-  Problem : High-frequency signals coupling between adjacent channels
-  Solution : Proper grounding, physical separation of sensitive traces, use of guard rings

### Compatibility Issues with Other Components

 Digital Interface Compatibility: 
-  TTL/CMOS Logic : Directly compatible with standard 5V CMOS/TTL logic levels
-  Microcontroller Interfaces : 3.3V systems may require level shifting for reliable operation
-  Power Sequencing : Ensure digital control signals don't exceed analog supply voltages during power-up

 Analog Circuit Integration: 
-  Op-Amp Loading : 300Ω on-resistance affects high-precision op-amp circuits
-  ADC Interfaces : Consider multiplexer settling time in ADC acquisition period calculations
-  High-Impedance Sources : 5pA leakage current may affect very high-impedance sensor interfaces

### PCB Layout Recommendations

 Power Supply Decoupling: 
- Place 0.1μF ceramic capacitors within 5mm of VDD and VSS pins
- Add

Alternative Part Number

  • DG507ACJ+ --: Pin-compatible CMOS analog multiplexer with the same 8-channel differential configuration and similar on-resistance, available in a DIP package.
  • CD4051BE --: Widely available 8-channel analog multiplexer/demultiplexer in DIP, usable as a lower-cost functional substitute where lower precision is acceptable.
  • DG508ACJ+ --: Similar CMOS 8-channel analog multiplexer family with comparable switching characteristics and DIP footprint for direct board replacement.
  • DG507AEN --: Equivalent CMOS analog multiplexer offering the same channel count and switching function, suitable as a drop-in alternative in most ADG507AKN applications.
  • HI-507A --: Analog multiplexer with matching 16-channel single-ended / 8-channel differential architecture and comparable electrical characteristics, usable as a functional substitute.

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