Overview
The AD9268BCPZ-125 is a dual, 16-bit, high-speed analog-to-digital converter (ADC) manufactured by Analog Devices Inc. This device is designed to support communications applications where high performance, combined with low cost, small size, and versatility, is desired. The AD9268 features a multistage, differential pipelined architecture with integrated output error correction logic and wide bandwidth, differential sample-and-hold analog input amplifiers. It supports a variety of user-selectable input ranges and includes an integrated voltage reference to ease design considerations. The device is available in a 64-lead Lead Frame Chip Scale Package (LFCSP) and is specified over the industrial temperature range of −40°C to +85°C.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (AVDD) | 1.7 | 1.8 | 1.9 | V |
| Supply Voltage (DRVDD) | 1.7 | 1.8 | 1.9 | V |
| Supply Current (IAVDD1) | 234 | 240 | 293 | mA |
| Supply Current (IDRVDD1) - 1.8 V CMOS | 35 | 45 | 55 | mA |
| Supply Current (IDRVDD1) - 1.8 V LVDS | 89 | 89 | 94 | mA |
| Power Consumption - DC Input | 420 | 450 | 565 | mW |
| Power Consumption - Sine Wave Input (DRVDD = 1.8 V CMOS Output Mode) | 485 | 608 | 800 | mW |
| Power Consumption - Sine Wave Input (DRVDD = 1.8 V LVDS Output Mode) | 582 | 685 | mW | |
| Conversion Rate (DCS Enabled) | 20 | 125 | MSPS | |
| Clock Input Rate | 625 | MHz | ||
| CLK Period—Divide-by-1 Mode (tCLK) | 8 | ns | ||
| CLK Pulse Width High (tCH) - Divide-by-1 Mode, DCS Enabled | 2.4 | 4 | 6.65 | ns |
Key Features
- SNR = 78.2 dBFS @ 70 MHz and 125 MSPS
- SFDR = 88 dBc @ 70 MHz and 125 MSPS
- Low power: 750 mW @ 125 MSPS
- 1.8 V analog supply operation
- 1.8 V CMOS or LVDS output supply
- Integer 1-to-8 input clock divider
- IF sampling frequencies up to 300 MHz
- −153.6 dBm/Hz small-signal input noise with 200 Ω input impedance @ 70 MHz and 125 MSPS
- Optional on-chip dither for improved SFDR performance with low power analog input
- Programmable internal ADC voltage reference
- Flexible power-down options for significant power savings
- 3-wire SPI-compatible serial interface for setup and control
- Pin compatibility with the AD9258, AD9251, AD9231, and AD9204 family of products
Applications
The AD9268 is primarily designed for communications applications where high performance, low cost, small size, and versatility are crucial. It is suitable for various high-speed data acquisition systems, including:
- Wireless communication systems
- Radar and surveillance systems
- Medical imaging and diagnostics
- High-speed data acquisition systems
- Instrumentation and test equipment
The AD9268-125EBZ evaluation board provides a comprehensive setup for evaluating the device in various configurations and is compatible with the HSC-ADC-EVALCZ data capture card and Visual Analog software package.
Q & A
- What is the sampling rate of the AD9268BCPZ-125?
The AD9268BCPZ-125 has a sampling rate of up to 125 MSPS.
- What is the resolution of the AD9268?
The AD9268 is a 16-bit analog-to-digital converter.
- What are the supported output formats for the AD9268?
The AD9268 supports 1.8 V CMOS or LVDS output formats.
- What is the power consumption of the AD9268 at 125 MSPS?
The power consumption at 125 MSPS is approximately 750 mW.
- Does the AD9268 have an integrated voltage reference?
Yes, the AD9268 features an integrated voltage reference.
- What is the temperature range for the AD9268?
The AD9268 is specified over the industrial temperature range of −40°C to +85°C.
- How is the AD9268 programmed?
Programming for setup and control is accomplished using a 3-wire SPI-compatible serial interface.
- What are some key applications for the AD9268?
The AD9268 is suitable for wireless communication systems, radar and surveillance systems, medical imaging, and high-speed data acquisition systems.
- Is the AD9268 pin-compatible with other ADC models?
Yes, the AD9268 is pin-compatible with the AD9258, AD9251, AD9231, and AD9204 family of products.
- What evaluation tools are available for the AD9268?
The AD9268-125EBZ evaluation board and the HSC-ADC-EVALCZ data capture card are available for evaluating the device.
