Overview
The AD9255BCPZ-80 is a 14-bit, 125 MSPS analog-to-digital converter (ADC) designed by Analog Devices Inc. This ADC is optimized for high-performance applications requiring low power consumption, small size, and versatility. It features a multistage, differential pipelined architecture with integrated output error correction logic, ensuring 14-bit accuracy and no missing codes over the full operating temperature range. The device is suitable for various applications, including communications, instrumentation, and medical imaging.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 14 | Bits |
| Sample Rate | 125 | MSPS |
| SNR | 78.3 dBFS @ 70 MHz and 125 MSPS | dBFS |
| SFDR | 93 dBc @ 70 MHz and 125 MSPS | dBc |
| Power Consumption | 371 mW @ 125 MSPS | mW |
| Analog Supply Voltage | 1.8 V | V |
| Digital Output Supply Voltage | 1.8 V CMOS or LVDS | V |
| Input Impedance | 200 Ω @ 70 MHz and 125 MSPS | Ω |
| Operating Temperature Range | −40°C to +85°C | °C |
| Package | 48-Lead LFCSP (7mm x 7mm x 0.85mm) |
Key Features
- Proprietary differential input maintaining excellent SNR performance for input frequencies up to 300 MHz.
- On-chip dither option for improved SFDR performance with low power analog input signals.
- Operation from a single 1.8 V supply and a separate digital output driver supply accommodating 1.8 V CMOS or LVDS outputs.
- Standard serial port interface (SPI) supporting various product features and functions, such as data formatting, enabling the clock DCS, power-down, test modes, and voltage reference mode.
- Integrated ADC sample-and-hold inputs and programmable internal ADC voltage reference.
- Flexible power-down options for significant power savings.
- Pin compatibility with the AD9265, allowing a simple migration up to 16 bits.
Applications
- Communications: Multimode digital receivers (3G), GSM, EDGE, W-CDMA, LTE, CDMA2000, WiMAX, and TD-SCDMA.
- Smart antenna systems and general-purpose software radios.
- Broadband data applications.
- Ultrasound equipment.
- Instrumentation and medical imaging.
Q & A
- What is the resolution and sample rate of the AD9255BCPZ-80? The AD9255BCPZ-80 has a resolution of 14 bits and a sample rate of 125 MSPS.
- What is the SNR and SFDR of the AD9255BCPZ-80 at 70 MHz and 125 MSPS? The SNR is 78.3 dBFS, and the SFDR is 93 dBc at 70 MHz and 125 MSPS.
- What is the power consumption of the AD9255BCPZ-80 at 125 MSPS? The power consumption is 371 mW at 125 MSPS.
- What are the supported output formats for the AD9255BCPZ-80? The ADC output data format is either parallel 1.8 V CMOS or LVDS (DDR).
- How is the setup and control of the AD9255BCPZ-80 accomplished? Programming for setup and control is accomplished using a 3-wire SPI-compatible serial interface.
- What is the operating temperature range of the AD9255BCPZ-80? The operating temperature range is −40°C to +85°C.
- What package type is the AD9255BCPZ-80 available in? The AD9255BCPZ-80 is available in a Pb-free, 48-lead LFCSP.
- Does the AD9255BCPZ-80 support on-chip dither? Yes, the AD9255BCPZ-80 has an optional on-chip dither function to improve SFDR performance with low power analog input signals.
- Is the AD9255BCPZ-80 pin-compatible with other ADC models? Yes, it is pin-compatible with the AD9265, allowing a simple migration up to 16 bits.
- What are some of the key applications of the AD9255BCPZ-80? Key applications include communications, smart antenna systems, broadband data applications, ultrasound equipment, instrumentation, and medical imaging.
