Overview
The AD9681BBCZ-125 is an octal, 14-bit analog-to-digital converter (ADC) produced by Analog Devices Inc. This device is designed for low cost, low power, small size, and ease of use, making it ideal for various high-performance applications. The AD9681 operates at a conversion rate of up to 125 million samples per second (MSPS) and features an on-chip sample-and-hold circuit. It requires a single 1.8 V power supply and an LVPECL-, CMOS-, or LVDS-compatible sample rate clock for full performance operation. The device is packaged in a 144-ball Chip Scale Package Ball Grid Array (CSP-BGA) with a small footprint of 10 mm x 10 mm x 1.7 mm, and it is specified over the industrial temperature range of −40°C to +85°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Channels | 8 | |
| Resolution | 14-bit | |
| Sample Rate | Up to 125 MSPS | |
| Power Consumption per Channel | 110 mW at 125 MSPS | |
| Signal-to-Noise Ratio (SNR) | 74 dBFS (to Nyquist) | |
| Spurious Free Dynamic Range (SFDR) | 90 dBc (to Nyquist) | |
| Differential Nonlinearity (DNL) | ±0.8 LSB (typical) | |
| Integral Nonlinearity (INL) | ±1.2 LSB (typical) | |
| Analog Input Voltage Range | 2 V p-p differential | |
| Supply Voltage | 1.8 V | |
| Package Type | 144-Ball CSP-BGA | |
| Operating Temperature Range | −40°C to +85°C |
Key Features
- Small Footprint: The device is packaged in a small 10 mm x 10 mm x 1.7 mm CSP-BGA, making it suitable for space-constrained applications.
- Low Power: The AD9681 dissipates 110 mW per channel at 125 MSPS with scalable power options, reducing overall system power consumption.
- Ease of Use: Data clock outputs (DCO±1, DCO±2) operate at frequencies of up to 500 MHz and support double data rate (DDR) operation, simplifying data capture.
- User Flexibility: SPI control offers a wide range of flexible features, including programmable clock and data alignment, power-down and standby modes, and custom digital test pattern generation.
- High Dynamic Performance: The device features high SNR and SFDR, ensuring excellent dynamic performance in various applications.
Applications
- Medical Imaging: The AD9681 is suitable for medical imaging applications due to its high resolution and dynamic performance.
- Communications Receivers: It is used in communications receivers where high-speed, low-power ADCs are required.
- Multichannel Data Acquisition: The device is ideal for multichannel data acquisition systems where multiple channels of high-speed ADCs are necessary.
Q & A
- What is the maximum sample rate of the AD9681BBCZ-125?
The maximum sample rate of the AD9681BBCZ-125 is up to 125 MSPS.
- How many channels does the AD9681BBCZ-125 have?
The AD9681BBCZ-125 has 8 channels.
- What is the resolution of the AD9681BBCZ-125?
The resolution of the AD9681BBCZ-125 is 14-bit.
- What is the power consumption per channel at 125 MSPS?
The power consumption per channel at 125 MSPS is 110 mW.
- What is the signal-to-noise ratio (SNR) of the AD9681BBCZ-125?
The SNR of the AD9681BBCZ-125 is 74 dBFS (to Nyquist).
- What is the spurious free dynamic range (SFDR) of the AD9681BBCZ-125?
The SFDR of the AD9681BBCZ-125 is 90 dBc (to Nyquist).
- What is the operating temperature range of the AD9681BBCZ-125?
The operating temperature range of the AD9681BBCZ-125 is −40°C to +85°C.
- What type of package does the AD9681BBCZ-125 use?
The AD9681BBCZ-125 is packaged in a 144-Ball CSP-BGA.
- Does the AD9681BBCZ-125 support power-down and standby modes?
Yes, the AD9681BBCZ-125 supports power-down and standby modes.
- Can the AD9681BBCZ-125 generate custom digital test patterns?
Yes, the AD9681BBCZ-125 can generate custom digital test patterns via the serial port interface (SPI).
