ADI AD9245BCPZ-20

The AD9245 is a monolithic, single 3V supply, 14-bit, 20 MSPS/40 MSPS/65 MSPS/80 MSPS analog-to-digital converter (ADC) featuring a high performance sample-and-hold amplifier (SHA) and voltage reference. The AD9245 uses a multistage differential pipelined architecture with output error correction logic to provide 14-bit accuracy and guarantee no missing codes over the full operating temperature range. The wide bandwidth, truly differential SHA allows a variety of user-selectable input ranges and common modes, including single-ended applications. It is suitable for multiplexed systems that switch full-scale voltage levels in successive channels and for sampling single-channel inputs at frequencies well beyond the Nyquist rate. Combined with power and cost savings over previously available analog-to-digital converters, the AD9245 is suitable for applications in communications, imaging, and medical ultrasound.

• Single 3 V supply operation (2.7 V to 3.6 V)
• SNR = 72.7 dBc to Nyquist
• SFDR = 83.0 dBc to Nyquist
• Low power
• 366 mW at 80 MSPS
• 300 mW at 65 MSPS
• 165 mW at 40 MSPS
• 90 mW at 20 MSPS
• Differential input with 500 MHz bandwidth
• On-chip reference and sample-and-hold
• DNL = ±0.5 LSB
• Flexible analog input: 1 V p-p to 2 V p-p range
• Offset binary or twos complement data format
• Clock duty-cycle stabilizer

• Medical imaging equipment
• IF sampling in communications receivers
• WCDMA, CDMA-One, CDMA-2000, and TDS-CDMA
• Battery-powered instruments
• Hand-held scopemeters
• Spectrum analyzers