Overview
The AD9251BCPZ-20, produced by Analog Devices Inc., is a monolithic, dual-channel, 14-bit analog-to-digital converter (ADC) that operates from a single 1.8 V analog power supply. It features a high-performance sample-and-hold circuit and an on-chip voltage reference. The ADC uses a multistage differential pipeline architecture with output error correction logic to ensure 14-bit accuracy at data rates up to 80 MSPS and guarantees no missing codes over the full operating temperature range of −40°C to +85°C.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Resolution | 14 bits | |
| Sample Rates | 20 MSPS, 40 MSPS, 65 MSPS, 80 MSPS | |
| Analog Supply Voltage | 1.8 V | |
| Digital Output Supply Voltage | 1.8 V to 3.3 V | |
| Signal-to-Noise Ratio (SNR) | 74.3 dBFS at 9.7 MHz input, 71.5 dBFS at 200 MHz input | AVDD = 1.8 V, DRVDD = 1.8 V, maximum sample rate, 2 V p-p differential input |
| Spurious-Free Dynamic Range (SFDR) | 93 dBc at 9.7 MHz input, 80 dBc at 200 MHz input | AVDD = 1.8 V, DRVDD = 1.8 V, maximum sample rate, 2 V p-p differential input |
| Power Consumption | 33 mW per channel at 20 MSPS, 73 mW per channel at 80 MSPS | |
| Input Bandwidth | 700 MHz | |
| Input Range | 2 V p-p differential analog input | |
| Package | 64-Lead RoHS Compliant LFCSP (9mm x 9mm x 0.75mm w/ EP) |
Key Features
- High-performance sample-and-hold circuit with excellent performance for input frequencies up to 200 MHz.
- On-chip voltage reference and sample-and-hold circuit.
- Differential input with 700 MHz bandwidth and 2 V p-p differential analog input.
- Low power consumption: 33 mW per channel at 20 MSPS and 73 mW per channel at 80 MSPS.
- Programmable clock and data alignment, and programmable digital test pattern generation.
- Optional clock duty cycle stabilizer (DCS) to compensate for wide variations in the clock duty cycle.
- Integer 1-to-8 input clock divider and data output multiplex option.
- Energy-saving power-down modes.
- Support for offset binary, gray code, or twos complement data format.
- Standard serial port interface (SPI) for various product features and functions.
Applications
The AD9251BCPZ-20 is suitable for a variety of high-speed data acquisition applications, including:
- Medical imaging and diagnostics
- Radar and electronic warfare systems
- High-speed data acquisition systems
- Test and measurement equipment
- Wireless communication systems
Q & A
- What is the resolution of the AD9251BCPZ-20 ADC?
The AD9251BCPZ-20 has a resolution of 14 bits.
- What are the available sample rates for the AD9251BCPZ-20?
The available sample rates are 20 MSPS, 40 MSPS, 65 MSPS, and 80 MSPS.
- What is the analog supply voltage for the AD9251BCPZ-20?
The analog supply voltage is 1.8 V.
- What are the supported digital output supply voltages?
The digital output supply voltages range from 1.8 V to 3.3 V.
- What is the signal-to-noise ratio (SNR) of the AD9251BCPZ-20?
The SNR is 74.3 dBFS at 9.7 MHz input and 71.5 dBFS at 200 MHz input.
- What is the spurious-free dynamic range (SFDR) of the AD9251BCPZ-20?
The SFDR is 93 dBc at 9.7 MHz input and 80 dBc at 200 MHz input.
- How much power does the AD9251BCPZ-20 consume?
The power consumption is 33 mW per channel at 20 MSPS and 73 mW per channel at 80 MSPS.
- What is the input bandwidth of the AD9251BCPZ-20?
The input bandwidth is 700 MHz.
- What is the package type of the AD9251BCPZ-20?
The package is a 64-Lead RoHS Compliant LFCSP (9mm x 9mm x 0.75mm w/ EP).
- Does the AD9251BCPZ-20 support multiple data formats?
Yes, it supports offset binary, gray code, and twos complement data formats.
- What interface is used for configuring the AD9251BCPZ-20?
A standard serial port interface (SPI) is used for configuring various product features and functions.
