Overview
The AD7938BSUZ-REEL7 is a high-performance, 12-bit, 8-channel analog-to-digital converter (ADC) produced by Analog Devices Inc. This successive approximation (SAR) ADC operates from a single 2.7 V to 5.25 V power supply and features throughput rates up to 1.5 million samples per second (MSPS). It is designed for low power consumption and high-speed data acquisition, making it suitable for a variety of applications requiring precise and efficient analog-to-digital conversion.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 12-bit |
| Number of Channels | 8 channels |
| Throughput Rate | Up to 1.5 MSPS |
| Power Supply | 2.7 V to 5.25 V |
| Input Types | Single-ended, fully differential, pseudo differential |
| Reference Voltage | On-chip 2.5 V reference (±0.2% @ 25°C, 25 ppm/°C) |
| Package Type | 32-Lead TQFP (7mm x 7mm x 1mm) |
| Operating Temperature | –40°C to +85°C |
| Power Dissipation | Low power dissipation, full shutdown mode: 2 µA maximum |
Key Features
- Low noise, wide bandwidth, differential track-and-hold amplifier capable of handling input frequencies up to 50 MHz
- Channel sequencer for preprogrammed selection of channels to be converted sequentially
- Software-configurable analog inputs: 8-channel single-ended, 4-channel fully differential, 4-channel pseudo differential, or 7-channel pseudo differential inputs
- High-speed parallel interface in word/byte modes
- Flexible power management options including full shutdown mode
- Accurate on-chip 2.5 V reference with the option to use an external reference
Applications
The AD7938BSUZ-REEL7 is versatile and can be used in a wide range of applications, including:
- Medical devices: For precise data acquisition in medical imaging and diagnostic equipment.
- Industrial automation: For high-speed data conversion in control systems and sensors.
- Communications: In telecommunications equipment requiring fast and accurate analog-to-digital conversion.
- Entertainment: In audio and video processing systems where high fidelity and low latency are crucial.
- Automotive: For sensor data acquisition in automotive systems.
Q & A
- What is the resolution of the AD7938BSUZ-REEL7 ADC?
The AD7938BSUZ-REEL7 has a 12-bit resolution. - How many analog input channels does the AD7938BSUZ-REEL7 have?
The AD7938BSUZ-REEL7 has 8 analog input channels. - What is the maximum throughput rate of the AD7938BSUZ-REEL7?
The maximum throughput rate is up to 1.5 MSPS. - What types of analog inputs can the AD7938BSUZ-REEL7 handle?
The AD7938BSUZ-REEL7 can handle single-ended, fully differential, and pseudo differential analog inputs. - What is the operating voltage range of the AD7938BSUZ-REEL7?
The operating voltage range is from 2.7 V to 5.25 V. - What is the package type of the AD7938BSUZ-REEL7?
The package type is a 32-Lead TQFP (7mm x 7mm x 1mm). - What is the operating temperature range of the AD7938BSUZ-REEL7?
The operating temperature range is –40°C to +85°C. - Does the AD7938BSUZ-REEL7 have an on-chip reference voltage?
Yes, it has an on-chip 2.5 V reference voltage (±0.2% @ 25°C, 25 ppm/°C). - Can the AD7938BSUZ-REEL7 be powered down to reduce power consumption?
Yes, it features a full shutdown mode with a maximum current of 2 µA. - How is the conversion process controlled in the AD7938BSUZ-REEL7?
The conversion process is controlled using standard control inputs that allow easy interfacing with microprocessors and DSPs. The input signal is sampled on the falling edge of CONVST and the conversion is initiated at this point.
