Overview
The AD7939BCPZ-REEL7 is a high-performance, 10-bit, 8-channel successive approximation (SAR) analog-to-digital converter (ADC) manufactured by Analog Devices Inc. This component is designed for high-speed data acquisition and features a low power consumption profile, making it suitable for a variety of applications requiring precise and efficient analog-to-digital conversion.
The AD7939BCPZ-REEL7 operates from a single 2.7 V to 5.25 V power supply and supports throughput rates up to 1.5 MSPS. It includes a low noise, wide bandwidth, differential track-and-hold amplifier capable of handling input frequencies up to 50 MHz. The device is packaged in a 32-lead LFCSP (Lead Frame Chip Scale Package) with an exposed pad, enhancing thermal performance and reducing package size.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 10-bit |
| Number of Channels | 8 |
| Conversion 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, or external reference (0.1 V to VDD) |
| Package Type | 32-Lead LFCSP (5mm x 5mm w/ EP) |
| Operating Temperature | –40°C to +85°C |
| SINAD at 50 kHz | 69 dB |
| Power Dissipation | Low power, full shutdown mode: 2 µA maximum |
Key Features
- High-Speed Conversion: Throughput rates up to 1.5 MSPS.
- Flexible Input Configurations: Supports single-ended, fully differential, and pseudo differential analog inputs.
- Accurate On-Chip Reference: 2.5 V reference with ±0.2% maximum accuracy at 25°C and 25 ppm/°C maximum temperature coefficient.
- Low Power Consumption: Advanced design techniques for low power dissipation, with a full shutdown mode consuming 2 µA maximum.
- Channel Sequencer: Allows preprogrammed selection of channels to be converted sequentially.
- Easy Interfacing: Standard control inputs for easy interfacing with microprocessors and DSPs.
- High Speed Parallel Interface: Supports word/byte modes with no pipeline delays.
Applications
- Digital Signal Processing: Suitable for various digital signal processing tasks due to its high speed and accuracy.
- High Speed Data Acquisition: Ideal for applications requiring rapid and precise data acquisition.
- Digital Storage Oscilloscope: Used in digital storage oscilloscopes for capturing high-frequency signals accurately.
- Industrial Automation: Can be used in industrial automation systems for precise measurement and control.
- Medical Devices: Suitable for medical devices requiring high accuracy and low power consumption.
Q & A
- What is the resolution of the AD7939BCPZ-REEL7 ADC?
The AD7939BCPZ-REEL7 is a 10-bit ADC.
- How many analog input channels does the AD7939BCPZ-REEL7 have?
The AD7939BCPZ-REEL7 has 8 analog input channels.
- What is the maximum conversion rate of the AD7939BCPZ-REEL7?
The maximum conversion rate is up to 1.5 MSPS.
- What types of analog inputs can the AD7939BCPZ-REEL7 support?
The device supports single-ended, fully differential, and pseudo differential analog inputs.
- What is the operating voltage range of the AD7939BCPZ-REEL7?
The device operates from a single 2.7 V to 5.25 V power supply.
- What is the package type of the AD7939BCPZ-REEL7?
The package type is 32-Lead LFCSP (5mm x 5mm w/ EP).
- What is the temperature range for the AD7939BCPZ-REEL7?
The operating temperature range is –40°C to +85°C.
- Does the AD7939BCPZ-REEL7 have an on-chip reference voltage?
Yes, it has an accurate on-chip 2.5 V reference voltage.
- How does the channel sequencer work in the AD7939BCPZ-REEL7?
The channel sequencer allows a preprogrammed selection of channels to be converted sequentially.
- What is the power consumption in full shutdown mode?
In full shutdown mode, the power consumption is 2 µA maximum.
