Overview
The ADG738BRUZ-REEL, manufactured by Analog Devices Inc., is a CMOS analog matrix switch featuring an 8-channel configuration. This device utilizes a serially-controlled 3-wire interface compatible with SPI™, QSPI™, MICROWIRE®, and some DSP interface standards. On power-up, the internal input shift register contains all zeros, and all switches are in the off state. The ADG738 is suitable for both multiplexing and demultiplexing applications due to its bidirectional switch conductivity.
Key Specifications
| Parameter | Typical Value | Maximum Value | Unit | Test Conditions/Comments |
|---|---|---|---|---|
| Analog Signal Range | 0 V to VDD | V | ||
| On Resistance (RON) | 6 Ω | 11 Ω (at 25°C), 16 Ω (at -40°C to +85°C) | Ω | VS = 0 V to VDD, IS = 10 mA |
| On-Resistance Match Between Channels (∆RON) | 0.4 Ω | 1.2 Ω (at 25°C), 1.4 Ω (at -40°C to +85°C) | Ω | VS = 0 V to VDD, IS = 10 mA |
| On-Resistance Flatness (RFLAT(ON)) | 3.5 Ω | Ω | VS = 0 V to VDD, IS = 10 mA | |
| Source Off Leakage (IS (Off)) | ±0.01 nA | ±0.1 nA | nA | VDD = 3.3 V, VS1 = 2 V |
| Turn-Off Time (tOFF) | 14 ns | 40 ns | ns | RL = 300 Ω, CL = 35 pF, VS1 = 2 V |
| Break-Before-Make Time Delay (tD) | 12 ns | 25 ns | ns | RL = 300 Ω, CL = 35 pF, VS = 2 V |
| Charge Injection | ±3 pC | pC | VS = 1.5 V, RS = 0 Ω, CL = 1 nF | |
| Off Isolation | -55 dB (at 10 MHz), -75 dB (at 1 MHz) | dB | RL = 50 Ω, CL = 5 pF | |
| Channel-to-Channel Crosstalk | -55 dB (at 10 MHz), -75 dB (at 1 MHz) | dB | RL = 50 Ω, CL = 5 pF | |
| -3 dB Bandwidth | 65 MHz | MHz | RL = 50 Ω, CL = 5 pF | |
| Supply Voltage (VDD) | 2.7 V to 5.5 V | V | ||
| Package Type | 16-lead TSSOP |
Key Features
- 3-Wire Serial Interface: Compatible with SPI™, QSPI™, MICROWIRE®, and some DSP interface standards.
- Single Supply Operation: Fully specified and guaranteed with 3 V and 5 V supply rails.
- Low On Resistance: 6 Ω typical, closely matched between switches and very flat over the full signal range.
- Break-Before-Make Switching: Prevents momentary shorting when switching channels.
- TTL/CMOS-Compatible Inputs: Ensures compatibility with a wide range of digital systems.
- Qualified for Automotive Applications: Meets the stringent requirements for automotive use).
Applications
- Data Acquisition Systems: Ideal for multiplexing and demultiplexing in data acquisition environments).
- Communication Systems: Used in various communication systems for signal routing and switching).
- Relay Replacement: Offers a solid-state alternative to mechanical relays).
- Audio and Video Switching: Suitable for switching audio and video signals due to its low on-resistance and high off-isolation).
Q & A
- What is the ADG738BRUZ-REEL used for?
The ADG738BRUZ-REEL is used as an 8-channel analog matrix switch in various applications such as data acquisition systems, communication systems, relay replacement, and audio/video switching.
- What type of interface does the ADG738BRUZ-REEL use?
The ADG738BRUZ-REEL uses a 3-wire serial interface compatible with SPI™, QSPI™, MICROWIRE®, and some DSP interface standards.
- What is the typical on-resistance of the ADG738BRUZ-REEL?
The typical on-resistance is 6 Ω.
- What is the supply voltage range for the ADG738BRUZ-REEL?
The supply voltage range is from 2.7 V to 5.5 V.
- What package type is the ADG738BRUZ-REEL available in?
The ADG738BRUZ-REEL is available in a 16-lead TSSOP package.
- Is the ADG738BRUZ-REEL qualified for automotive applications?
Yes, it is qualified for automotive applications.
- What is the -3 dB bandwidth of the ADG738BRUZ-REEL?
The -3 dB bandwidth is typically 65 MHz.
- Does the ADG738BRUZ-REEL support daisy-chaining?
Yes, the output of the input shift register, DOUT, enables daisy-chaining of multiple parts.
- What is the turn-off time (tOFF) of the ADG738BRUZ-REEL?
The turn-off time is typically 14 ns and a maximum of 40 ns.
- What is the charge injection of the ADG738BRUZ-REEL?
The charge injection is typically ±3 pC.
