Overview
The AD9251BCPZ-40, produced by Analog Devices Inc., is a monolithic, dual-channel, 1.8 V supply, 14-bit analog-to-digital converter (ADC). It operates at sample rates of 20 MSPS, 40 MSPS, 65 MSPS, and 80 MSPS, making it versatile for various high-speed applications. The ADC features a high-performance sample-and-hold circuit and an on-chip voltage reference. It uses a multistage differential pipeline architecture with output error correction logic to ensure 14-bit accuracy and guarantee no missing codes over the full operating temperature range of −40°C to +85°C.
Key Specifications
| Parameter | Description |
|---|---|
| Resolution | 14-bit |
| Sample Rates | 20 MSPS, 40 MSPS, 65 MSPS, 80 MSPS |
| Analog Supply Voltage | 1.8 V |
| Digital Output Driver Supply | 1.8 V to 3.3 V |
| Input Frequency Range | Up to 200 MHz |
| Output Data Format | Offset binary, gray code, or twos complement |
| Package Type | 64-lead RoHS Compliant LFCSP (9mm x 9mm x 0.75mm) |
| Operating Temperature Range | −40°C to +85°C |
Key Features
- High-Performance Sample-and-Hold Circuit: Maintains excellent performance for input frequencies up to 200 MHz and is designed for low cost, low power, and ease of use.
- Programmable Clock and Data Alignment: Allows for flexible system design and minimizes system cost.
- Programmable 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 while maintaining excellent overall ADC performance.
- Serial Port Interface (SPI): Supports various product features and functions, such as data output formatting, internal clock divider, power-down, DCO/DATA timing and offset adjustments, and voltage reference modes.
- Output Data Multiplexing: Output data can be multiplexed onto a single output bus, supporting both 1.8 V and 3.3 V CMOS levels.
Applications
The AD9251BCPZ-40 is suitable for a variety of high-speed data acquisition applications, including:
- Medical Imaging: Such as MRI and CT scanners, where high-resolution and fast sampling rates are critical.
- Wireless Infrastructure: Including base stations and other communication equipment requiring high-speed ADCs.
- Industrial and Scientific Instruments: Such as oscilloscopes, spectrum analyzers, and other measurement instruments.
- Aerospace and Defense: For applications requiring high reliability and performance in harsh environments.
The AD9251-80EBZ evaluation board is available for evaluating the AD9251, providing all necessary support circuitry and software interfaces like VisualAnalog and SPI controller software.
Q & A
- What is the resolution of the AD9251BCPZ-40 ADC?
The AD9251BCPZ-40 has a 14-bit resolution.
- What are the available sample rates for the AD9251BCPZ-40?
The sample rates available are 20 MSPS, 40 MSPS, 65 MSPS, and 80 MSPS.
- What is the analog supply voltage for the AD9251BCPZ-40?
The analog supply voltage is 1.8 V.
- What types of output data formats are supported by the AD9251BCPZ-40?
The output data formats supported are offset binary, gray code, and twos complement.
- Does the AD9251BCPZ-40 support differential clock input?
Yes, it supports differential clock input with an optional duty cycle stabilizer (DCS).
- What is the operating temperature range of the AD9251BCPZ-40?
The operating temperature range is −40°C to +85°C.
- Is the AD9251BCPZ-40 RoHS compliant?
Yes, the AD9251BCPZ-40 is RoHS compliant.
- What type of package does the AD9251BCPZ-40 come in?
The AD9251BCPZ-40 comes in a 64-lead LFCSP package.
- Does the AD9251BCPZ-40 support SPI interface?
Yes, it supports a standard serial port interface (SPI) for setup and control.
- What evaluation board is available for the AD9251BCPZ-40?
The AD9251-80EBZ evaluation board is available for evaluating the AD9251.
