Overview
The ADG738BRU-REEL7, produced by Analog Devices Inc., is a CMOS analog matrix switch featuring a serially-controlled 3-wire interface. This device is an 8-channel matrix switch, designed for low voltage operations and is compatible with various serial interface standards such as SPI, QSPI, MICROWIRE, and some DSP interfaces. The ADG738 is known for its closely matched on-resistance between switches and its flat on-resistance over the full signal range, making it suitable for both multiplexing and demultiplexing applications.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Number of Channels | 8 | |
| On Resistance | Typically 4 Ω | VDD = 5 V, VSS = 0 V, VA = VB = 2.5 V |
| On Resistance Flatness | ±0.25 Ω | VDD = 5 V, VSS = 0 V, VA = VB = 0 V to 5 V |
| Break-Before-Make Time Delay | 12 ns typ, 25 ns max | RL = 300 Ω, CL = 35 pF, VS = 2 V |
| Off Isolation | -55 dB typ at 10 MHz, -75 dB typ at 1 MHz | RL = 50 Ω, CL = 5 pF |
| Channel-to-Channel Crosstalk | -55 dB typ at 10 MHz, -75 dB typ at 1 MHz | RL = 50 Ω, CL = 5 pF |
| -3 dB Bandwidth | 65 MHz typ | RL = 50 Ω, CL = 5 pF |
| Power Supply Range | 2.7 V to 5.5 V | |
| Package Type | 16-Lead TSSOP |
Key Features
- Serially-controlled 3-wire interface compatible with SPI, QSPI, MICROWIRE, and some DSP interfaces.
- Closely matched on-resistance between switches and very flat over the full signal range.
- Break-before-make switching action to prevent momentary shorting when switching channels.
- Each switch conducts equally well in both directions when on, suitable for both multiplexing and demultiplexing applications.
- Daisy-chain capability through the output of the input shift register (DOUT).
- Low voltage operation from 2.7 V to 5.5 V.
Applications
The ADG738 is versatile and can be used in a variety of applications, including:
- Multiplexing and demultiplexing in data acquisition systems.
- Audio and video signal routing.
- Medical and industrial instrumentation.
- Automotive and aerospace systems where low voltage and high reliability are required.
Q & A
- What is the ADG738BRU-REEL7?
The ADG738BRU-REEL7 is an 8-channel CMOS analog matrix switch with a serially-controlled 3-wire interface, produced by Analog Devices Inc.
- What is the on-resistance of the ADG738?
The on-resistance of the ADG738 is typically 4 Ω, with a flatness of ±0.25 Ω over the full signal range.
- What is the break-before-make time delay of the ADG738?
The break-before-make time delay is typically 12 ns, with a maximum of 25 ns under specified conditions.
- What is the off-isolation of the ADG738?
The off-isolation is typically -55 dB at 10 MHz and -75 dB at 1 MHz.
- What is the -3 dB bandwidth of the ADG738?
The -3 dB bandwidth is typically 65 MHz.
- What power supply range does the ADG738 operate within?
The ADG738 operates within a power supply range of 2.7 V to 5.5 V.
- What package type is the ADG738 available in?
The ADG738 is available in a 16-Lead TSSOP package.
- Can the ADG738 be daisy-chained?
- What are some common applications of the ADG738?
The ADG738 is commonly used in multiplexing and demultiplexing in data acquisition systems, audio and video signal routing, medical and industrial instrumentation, and automotive and aerospace systems.
- Is the ADG738 compatible with various serial interface standards?
