Overview
The AD9249BBCZ-65, produced by Analog Devices Inc., is a 16-channel, 14-bit analog-to-digital converter (ADC) designed for low cost, low power, small size, and ease of use. This device operates at a conversion rate of up to 65 MSPS and is optimized for outstanding dynamic performance and low power consumption. It features an on-chip sample-and-hold circuit and requires a single 1.8 V power supply along with an LVPECL-/CMOS-/LVDS-compatible sample rate clock. The AD9249 is particularly suited for applications where a small package size is critical, such as medical imaging and communications receivers.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Channels | 16 |
| Resolution | 14-bit |
| Conversion Rate | Up to 65 MSPS |
| Power Supply | 1.8 V |
| Package Type | 144-Ball CSP-BGA (10mm x 10mm x 1.7mm) |
| Temperature Range | −40°C to +85°C |
| Power Consumption per Channel | 35 mW at 20 MSPS, 58 mW at 65 MSPS |
| Signal-to-Noise Ratio (SNR) | 75 dBFS (to Nyquist) |
| Spurious Free Dynamic Range (SFDR) | 90 dBc (to Nyquist) |
| Differential Non-Linearity (DNL) | ±0.6 LSB (typical) |
| Integral Non-Linearity (INL) | ±0.9 LSB (typical) |
| Input Voltage Range | 2 Vp-p |
| Data Interface | Serial LVDS (ANSI-644, default) |
Key Features
- Low Power Consumption: The AD9249 consumes 35 mW per channel at 20 MSPS and 58 mW per channel at 65 MSPS, with scalable power options.
- Small Footprint: The device is packaged in a small 10 mm x 10 mm x 1.7 mm 144-ball CSP-BGA, making it ideal for space-constrained applications.
- Ease of Use: Data clock outputs (DCO±1, DCO±2) operate at frequencies of up to 455 MHz and support double data rate (DDR) operation. Frame clock outputs (FCO±1, FCO±2) are also provided for signaling new output bytes.
- User Flexibility: SPI control offers a wide range of flexible features, including programmable clock and data alignment and programmable digital test pattern generation. Built-in deterministic and pseudorandom patterns, as well as custom user-defined test patterns, can be entered via the SPI interface.
- Individual Channel Power-Down: The device supports individual channel power-down, consuming less than 2 mW when all channels are disabled.
Applications
- Medical Imaging: The AD9249 is suitable for medical imaging applications due to its high dynamic performance and low power consumption.
- Communications Receivers: It is also used in communications receivers where high-speed data conversion is required.
- Multichannel Data Acquisition: The device is ideal for multichannel data acquisition systems where multiple channels need to be converted simultaneously).
Q & A
- What is the conversion rate of the AD9249BBCZ-65?
The AD9249BBCZ-65 operates at a conversion rate of up to 65 MSPS).
- How many channels does the AD9249BBCZ-65 have?
The device has 16 channels).
- What is the power supply requirement for the AD9249BBCZ-65?
The device requires a single 1.8 V power supply).
- What type of package does the AD9249BBCZ-65 come in?
The device is packaged in a 144-ball CSP-BGA (10mm x 10mm x 1.7mm)).
- What is the temperature range for the AD9249BBCZ-65?
The device is specified over the industrial temperature range of −40°C to +85°C).
- What is the power consumption per channel at 20 MSPS and 65 MSPS?
The power consumption is 35 mW per channel at 20 MSPS and 58 mW per channel at 65 MSPS).
- What is the signal-to-noise ratio (SNR) of the AD9249BBCZ-65?
The SNR is 75 dBFS (to Nyquist)).
- Does the AD9249BBCZ-65 support individual channel power-down?
Yes, the device supports individual channel power-down, consuming less than 2 mW when all channels are disabled).
- What types of digital test patterns can be generated by the AD9249BBCZ-65?
The device can generate built-in deterministic and pseudorandom patterns, as well as custom user-defined test patterns entered via the SPI interface).
- What applications is the AD9249BBCZ-65 commonly used in?
The device is commonly used in medical imaging, communications receivers, and multichannel data acquisition systems).
