Overview
The ADG438FBRZ from Analog Devices Inc. is a CMOS analog multiplexer designed to provide high reliability and robust fault protection in various electronic systems. This device is part of the ADG438F series, which includes eight single-channel multiplexers. It is particularly suited for applications requiring the switching of multiple analog signals while ensuring protection against overvoltages and power loss.
Key Specifications
| Parameter | Typical Value | Maximum Value | Unit | Conditions |
|---|---|---|---|---|
| Analog Signal Range | VSS + 1.4 V to VDD - 1.4 V | VSS + 2.2 V to VDD - 2.2 V | V | Output loaded, 1 mA |
| On-Resistance (RON) | 270 Ω | 450 Ω | Ω | −10 V ≤ VS ≤ +10 V, IS = 1 mA |
| On-Resistance Flatness (RFLAT) | 9% | 10% | % | −10 V ≤ VS ≤ +10 V, IS = 1 mA |
| Switching Times (tON/tOFF) | 250 ns / 150 ns | ns | ||
| Maximum Dual Supply Voltage | ±15 V | V | ||
| Maximum Operating Temperature | 105 °C | °C | ||
| Package Type | SOIC-16 |
Key Features
- Fault and Overvoltage Protection: The ADG438FBRZ can withstand continuous voltage inputs from −40 V to +55 V, protecting both the device and the signal source during fault conditions.
- Low RON and Fast Switching Times: The device features a low on-resistance of 270 Ω and fast switching times of 250 ns (tON) and 150 ns (tOFF).
- Break-Before-Make Construction: Ensures that the old channel is turned off before the new channel is turned on, preventing signal overlap.
- TTL- and CMOS-Compatible Inputs: Compatible with both TTL and CMOS logic levels, making it versatile for various system integrations.
- Small Charge Injection and Low Crosstalk: Features a small charge injection of 15 pC and low crosstalk of -93 dB @ 100 kHz, reducing signal distortion and noise.
Applications
- Data Acquisition Systems: Ideal for switching multiple analog signals in data acquisition systems.
- Industrial and Process Control Systems: Used in industrial settings for reliable signal routing and control.
- Avionics Test Equipment: Suitable for avionics due to its high reliability and fault protection features.
- Biometric Identification: Used in biometric identification functions such as fingerprint and iris recognition.
- Internet of Things (IoT): Facilitates communication between IoT devices like RFID and Bluetooth chips.
- Data Security: Used in security protection functions like encryption/decryption chips.
Q & A
- What is the primary function of the ADG438FBRZ?
The primary function of the ADG438FBRZ is to act as an 8:1 analog multiplexer, switching one of eight inputs to a common output. - What kind of fault protection does the ADG438FBRZ offer?
The ADG438FBRZ offers fault protection against continuous voltage inputs from −40 V to +55 V, ensuring the device and signal source are protected during fault conditions. - What is the typical on-resistance (RON) of the ADG438FBRZ?
The typical on-resistance (RON) is 270 Ω. - What are the switching times for the ADG438FBRZ?
The switching times are 250 ns (tON) and 150 ns (tOFF). - Is the ADG438FBRZ compatible with TTL and CMOS logic levels?
Yes, the ADG438FBRZ is compatible with both TTL and CMOS logic levels. - What is the maximum operating temperature of the ADG438FBRZ?
The maximum operating temperature is 105 °C. - What type of package does the ADG438FBRZ come in?
The ADG438FBRZ comes in a SOIC-16 package. - What are some common applications of the ADG438FBRZ?
Common applications include data acquisition systems, industrial and process control systems, avionics test equipment, biometric identification, IoT devices, and data security functions. - Does the ADG438FBRZ have any special features to reduce signal distortion?
Yes, it features small charge injection and low crosstalk, reducing signal distortion and noise. - Is the ADG438FBRZ RoHS compliant?
Yes, the ADG438FBRZ is RoHS compliant.
