Overview
The AD7938BSU-6 is a high-performance, 12-bit successive approximation (SAR) analog-to-digital converter (ADC) manufactured by Analog Devices Inc. This component is designed for high-speed, low-power applications and operates from a single 2.7 V to 5.25 V power supply. It features a low noise, wide bandwidth differential track-and-hold amplifier and supports throughput rates up to 625 kSPS. The ADC includes eight analog input channels with a user-programmable channel sequencer, allowing for flexible configuration of input channels.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 12 bits |
| Throughput Rate | Up to 625 kSPS |
| Power Supply | 2.7 V to 5.25 V |
| Analog Input Channels | 8 channels (configurable as single-ended, fully differential, or pseudo differential) |
| Input Frequency Range | Up to 50 MHz |
| Reference Voltage | On-chip 2.5 V reference |
| Output Coding | Straight binary or twos complement |
| Package | 32-lead LFCSP or TQFP |
Key Features
- High-speed conversion with throughput rates up to 625 kSPS
- Low noise, wide bandwidth differential track-and-hold amplifier
- Eight analog input channels with user-programmable channel sequencer
- Flexible power management options
- On-chip 2.5 V reference voltage
- Support for single-ended, fully differential, and pseudo differential analog inputs
- Standard control inputs for easy interfacing with microprocessors and DSPs
Applications
The AD7938BSU-6 is suitable for a variety of applications requiring high-speed and accurate analog-to-digital conversion. These include:
- Industrial automation and control systems
- Medical devices and patient monitoring systems
- Aerospace and defense systems
- Telecommunications and data acquisition systems
- Automotive electronics and sensor systems
Q & A
- What is the resolution of the AD7938BSU-6 ADC?
The AD7938BSU-6 has a resolution of 12 bits. - What is the maximum throughput rate of the AD7938BSU-6?
The maximum throughput rate is up to 625 kSPS. - What is the power supply range for the AD7938BSU-6?
The power supply range is from 2.7 V to 5.25 V. - How many analog input channels does the AD7938BSU-6 have?
The AD7938BSU-6 has eight analog input channels. - What types of analog input configurations are supported by the AD7938BSU-6?
The AD7938BSU-6 supports single-ended, fully differential, and pseudo differential analog input configurations. - What is the maximum input frequency that the track-and-hold amplifier can handle?
The track-and-hold amplifier can handle input frequencies up to 50 MHz. - Does the AD7938BSU-6 have an on-chip reference voltage?
Yes, the AD7938BSU-6 has an on-chip 2.5 V reference voltage. - What are the output coding options for the AD7938BSU-6?
The output coding options are straight binary or twos complement. - What package options are available for the AD7938BSU-6?
The AD7938BSU-6 is available in 32-lead LFCSP or TQFP packages. - How is the conversion process initiated in the AD7938BSU-6?
The conversion process is initiated on the falling edge of the CONVST signal.
