Overview
The AD9251BCPZ-80, produced by Analog Devices Inc., is a high-performance, monolithic, dual-channel analog-to-digital converter (ADC). It operates on a single 1.8 V analog power supply and features a separate digital output driver supply that can accommodate 1.8 V to 3.3 V logic families. This 14-bit ADC supports sampling rates of 20 MSPS, 40 MSPS, 65 MSPS, and 80 MSPS, making it versatile for various high-speed applications. The device incorporates a patented sample-and-hold circuit designed for low cost, low power consumption, and ease of use, with excellent performance for input frequencies up to 200 MHz.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Resolution | 14-bit | |
| Sampling Rates | 20 MSPS, 40 MSPS, 65 MSPS, 80 MSPS | |
| Analog Power Supply | 1.8 V | |
| Digital Output Driver Supply | 1.8 V to 3.3 V | |
| Input Range | 2 V p-p differential input | AIN = −1.0 dBFS, DCS disabled |
| Operating Temperature Range | −40°C to +85°C | |
| Package | 64-Lead RoHS Compliant LFCSP | |
| Output Format | Offset binary, gray code, or twos complement |
Key Features
- High Performance Sample-and-Hold Circuit: Maintains excellent performance for input frequencies up to 200 MHz, designed for low cost, low power, and ease of use.
- Programmable Clock and Data Alignment: Allows for flexible system design and minimizes system cost.
- Digital Test Pattern Generation: Includes built-in deterministic and pseudorandom patterns, as well as custom user-defined test patterns via the SPI interface.
- Differential Clock Input with Duty Cycle Stabilizer (DCS): Compensates for wide variations in the clock duty cycle, ensuring excellent overall ADC performance.
- Serial Port Interface (SPI): Supports various product features such as data output formatting, internal clock divider, power-down, DCO/DATA timing and offset adjustments, and voltage reference modes.
- Output Data Formatting: Supports offset binary, gray code, or twos complement format, with both 1.8 V and 3.3 V CMOS levels and the option to multiplex output data onto a single output bus.
Applications
The AD9251BCPZ-80 is suitable for a variety of high-speed applications, including:
- Medical Imaging: Such as MRI and CT scanners, where high-resolution and high-speed data acquisition are critical.
- Industrial and Scientific Instruments: Including oscilloscopes, spectrum analyzers, and other measurement equipment requiring precise and fast data conversion.
- Communication Systems: For applications in wireless communication, radar, and other high-speed data acquisition systems.
- Aerospace and Defense: Where the ADC's performance and reliability are essential for various military and aerospace applications.
Q & A
- What is the resolution of the AD9251BCPZ-80 ADC?
The AD9251BCPZ-80 is a 14-bit analog-to-digital converter.
- What are the supported sampling rates for the AD9251BCPZ-80?
The supported sampling rates are 20 MSPS, 40 MSPS, 65 MSPS, and 80 MSPS.
- What is the analog power supply voltage for the AD9251BCPZ-80?
The analog power supply voltage is 1.8 V.
- What digital output driver supply voltages are supported by the AD9251BCPZ-80?
The device supports 1.8 V to 3.3 V digital output driver supply voltages.
- What is the operating temperature range for the AD9251BCPZ-80?
The operating temperature range is −40°C to +85°C.
- What package type is the AD9251BCPZ-80 available in?
The device is available in a 64-Lead RoHS Compliant LFCSP package.
- What output formats does the AD9251BCPZ-80 support?
The device supports offset binary, gray code, or twos complement output formats.
- Does the AD9251BCPZ-80 have a duty cycle stabilizer?
Yes, the AD9251BCPZ-80 includes an optional duty cycle stabilizer (DCS) to compensate for wide variations in the clock duty cycle.
- How does the AD9251BCPZ-80 support test pattern generation?
The device supports built-in deterministic and pseudorandom test patterns, as well as custom user-defined test patterns via the SPI interface.
- What software tools are available for evaluating the AD9251BCPZ-80?
The device can be evaluated using the VisualAnalog software package and the SPI controller software package.
