Overview
The AD9251BCPZ-65 is a high-performance, dual-channel, 14-bit analog-to-digital converter (ADC) produced by Analog Devices Inc. This monolithic ADC operates from 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. It is designed using a multistage differential pipeline architecture with output error correction logic, ensuring 14-bit accuracy at data rates up to 80 MSPS and guaranteeing no missing codes over the full operating temperature range of −40°C to +85°C.
Key Specifications
| Parameter | Value | Description |
|---|---|---|
| Number of Bits | 14 | Resolution of the ADC |
| Sampling Rate | 20 MSPS, 40 MSPS, 65 MSPS, 80 MSPS | Maximum sampling rates per channel |
| Number of Inputs | 2 | Dual-channel differential inputs |
| Input Type | Differential | Type of analog input |
| Input Bandwidth | 700 MHz | Bandwidth of the differential input |
| Analog Supply Voltage | 1.7 V ~ 1.9 V | Voltage range for the analog supply |
| Digital Supply Voltage | 1.7 V ~ 3.6 V | Voltage range for the digital output driver supply |
| Power Consumption | 33 mW per channel at 20 MSPS, 73 mW per channel at 80 MSPS | Power consumption at different sampling rates |
| Package | 64-lead LFCSP (9mm x 9mm x 0.75mm w/ EP) | Package type and dimensions |
| Operating Temperature Range | −40°C to +85°C | Industrial temperature range |
Key Features
- High Performance Sample-and-Hold Circuit: Maintains excellent performance for input frequencies up to 200 MHz.
- Low Power Consumption: 33 mW per channel at 20 MSPS and 73 mW per channel at 80 MSPS.
- Programmable Clock and Data Alignment: Allows for flexible system design and minimizes system cost.
- Digital Test Pattern Generation: Built-in deterministic and pseudorandom patterns, as well as custom user-defined test patterns via SPI.
- Optional Duty Cycle Stabilizer (DCS): Compensates for wide variations in the clock duty cycle.
- Energy-Saving Power-Down Modes: Reduces power consumption during idle periods.
- Support for Multiple Data Formats: Output data presented in offset binary, gray code, or twos complement format.
- Data Output Multiplex Option: Output data can be multiplexed onto a single output bus.
Applications
The AD9251BCPZ-65 is suitable for a variety of high-performance applications, including:
- Medical Imaging: High-resolution imaging systems require precise and fast ADCs like the AD9251.
- Industrial Automation: Used in high-speed data acquisition systems for monitoring and control.
- Communications Systems: Ideal for baseband processing in wireless communication systems.
- Aerospace and Defense: Applications requiring high accuracy and reliability in data conversion.
Q & A
- What is the resolution of the AD9251BCPZ-65 ADC?
The AD9251BCPZ-65 is a 14-bit analog-to-digital converter.
- What are the available sampling rates for the AD9251BCPZ-65?
The ADC supports sampling rates of 20 MSPS, 40 MSPS, 65 MSPS, and 80 MSPS.
- What type of input does the AD9251BCPZ-65 support?
The ADC supports differential analog inputs with a bandwidth of 700 MHz.
- What is the power consumption of the AD9251BCPZ-65 at different sampling rates?
The power consumption is 33 mW per channel at 20 MSPS and 73 mW per channel at 80 MSPS.
- What is the operating temperature range of the AD9251BCPZ-65?
The operating temperature range is −40°C to +85°C.
- Does the AD9251BCPZ-65 support multiple data formats?
Yes, it supports offset binary, gray code, and twos complement data formats).
- What is the purpose of the optional duty cycle stabilizer (DCS) in the AD9251BCPZ-65?
The DCS compensates for wide variations in the clock duty cycle while maintaining excellent overall ADC performance).
- Can the output data of the AD9251BCPZ-65 be multiplexed?
Yes, the output data can be multiplexed onto a single output bus).
- What package type is the AD9251BCPZ-65 available in?
The ADC is available in a 64-lead LFCSP package).
- Is the AD9251BCPZ-65 RoHS compliant?
Yes, the AD9251BCPZ-65 is RoHS compliant).
