Overview
The ADG451BR, produced by Analog Devices Inc., is a monolithic CMOS device that features four independently selectable, single-pole/single-throw (SPST) switches. This component is designed using an enhanced LC2MOS process, which offers low power dissipation, high switching speed, and low on-resistance. Each switch can conduct equally well in both directions when on and has an input signal range that extends to the supplies. The ADG451BR is particularly useful in applications requiring low charge injection and minimal transients when switching digital inputs.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Circuits | 4 |
| Switch Type | SPST - NC |
| On-State Resistance (Max) | 5 Ω |
| Operating Temperature | -40°C to +85°C |
| Voltage - Supply, Dual (V±) | ±4.5V to ±20V |
| Voltage - Supply, Single (V+) | 12 V |
| Input High Voltage, VINH | 2.4 V min |
| Input Low Voltage, VINL | 0.8 V max |
| Input Current, IINL or IINH | 0.005 μA typ, ±0.5 μA max |
| Switch Time (Ton, Toff) | 180 ns max, 140 ns max |
| Charge Injection | 20 pC typ |
| Off Isolation | 65 dB typ at 1 MHz |
| Package / Case | 16-SOIC (0.154", 3.90mm Width) |
Key Features
- Four independent SPST switches with low on-resistance (5 Ω max)
- Low power dissipation and high switching speed
- Low charge injection for minimal transients when switching digital inputs
- Break-before-make switching action suitable for multiplexer applications
- Input signal range extends to the supplies
- Conducts equally well in both directions when on
- Digital control logic: switches turn on with a logic low input (ADG451)
Applications
The ADG451BR is suitable for a variety of applications, including:
- Multiplexer and demultiplexer circuits
- Signal routing and switching in audio and video systems
- Medical and industrial instrumentation
- Communication systems requiring low distortion and high isolation
Q & A
- What is the on-state resistance of the ADG451BR?
The on-state resistance of the ADG451BR is 5 Ω max. - How many independent switches does the ADG451BR contain?
The ADG451BR contains four independent SPST switches. - What is the operating temperature range of the ADG451BR?
The operating temperature range is -40°C to +85°C. - What is the input signal range for each switch?
The input signal range for each switch extends to the supplies. - How does the digital control logic work for the ADG451BR?
The switches turn on with a logic low input. - What is the charge injection of the ADG451BR?
The charge injection is 20 pC typ. - What is the off isolation of the ADG451BR at 1 MHz?
The off isolation is 65 dB typ at 1 MHz. - In what package is the ADG451BR available?
The ADG451BR is available in a 16-SOIC package. - What are some common applications of the ADG451BR?
Common applications include multiplexer and demultiplexer circuits, signal routing in audio and video systems, medical and industrial instrumentation, and communication systems. - What is the switch time (Ton, Toff) for the ADG451BR?
The switch time is 180 ns max for Ton and 140 ns max for Toff.
