Overview
The ADG439FBRZ is a high-performance CMOS analog multiplexer produced by Analog Devices Inc. This device features four differential channels, providing robust fault protection and reliable signal switching. It utilizes a series n-channel, p-channel, and n-channel MOSFET structure to protect both the device and the signal source from overvoltage or power loss. The multiplexer can switch one of four differential inputs to a common differential output based on 2-bit binary address lines (A0 and A1) and includes an enable (EN) input to control the device's operation.
Key Specifications
| Parameter | Value | Unit | Comments |
|---|---|---|---|
| Number of Channels | 4 | - | Differential channels |
| Switch Time (tON, tOFF) | 180ns (tON), 100ns (tOFF) | ns | Typical values |
| On-Resistance (RON) | 270 Ω | Ω | Typical value at 25°C |
| Max Dual Supply Voltage | ±15 V | V | Dual supply operation |
| Operating Temperature | -40°C to +125°C | °C | - |
| Package Style | 16-lead NSOIC | - | Surface mount package |
| Interface | Parallel | - | TTL and CMOS-compatible inputs |
| Channel-to-Channel Crosstalk | 93 dB | dB | Typical value |
| Off Isolation | 93 dB | dB | Typical value |
Key Features
- Fault and overvoltage protection up to -40V to +55V
- Latch-up proof construction
- Fast switching times: tON = 180ns, tOFF = 100ns (typical)
- Break-before-make construction
- TTL and CMOS-compatible inputs
- All switches off with power supply off
- Low on-resistance (RON) of 270 Ω (typical)
- High channel-to-channel crosstalk and off isolation of 93 dB (typical)
Applications
- Data acquisition systems
- Industrial and process control systems
- Avionics test equipment
- Signal routing between systems
- High reliability control systems
Q & A
- What is the ADG439FBRZ used for?
The ADG439FBRZ is used as a CMOS analog multiplexer, particularly in applications requiring fault protection and reliable signal switching.
- How many differential channels does the ADG439FBRZ have?
The ADG439FBRZ has four differential channels.
- What is the typical switching time for the ADG439FBRZ?
The typical switching times are tON = 180ns and tOFF = 100ns.
- What is the maximum dual supply voltage for the ADG439FBRZ?
The maximum dual supply voltage is ±15 V.
- What is the operating temperature range for the ADG439FBRZ?
The operating temperature range is -40°C to +125°C.
- What type of package does the ADG439FBRZ come in?
The ADG439FBRZ comes in a 16-lead NSOIC package.
- Does the ADG439FBRZ have fault protection?
Yes, the ADG439FBRZ provides fault and overvoltage protection up to -40V to +55V.
- Is the ADG439FBRZ compatible with TTL and CMOS inputs?
Yes, the ADG439FBRZ is TTL and CMOS-compatible.
- What is the typical on-resistance (RON) of the ADG439FBRZ?
The typical on-resistance (RON) is 270 Ω.
- What are some common applications of the ADG439FBRZ?
Common applications include data acquisition systems, industrial and process control systems, avionics test equipment, signal routing between systems, and high reliability control systems.
