Description

The AD9244BSTZ-65 is a monolithic, single 5 V supply, 14-bit, 40 MSPS/65 MSPS ADC for analog to digital conversion. It features an on-chip, high performance sample-and-hold amplifier (SHA) and voltage reference. The AD9244 uses a multistage differential pipelined architecture with output error correction logic to provide 14-bit accuracy at 40 MSPS/65 MSPS data rates. It guarantees no missing codes over the full operating temperature range and has an on-board programmable voltage reference. The ADC is fabricated on an advanced CMOS process and is available in a 48-lead LQFP package. It is specified for operation over the industrial temperature range of -40°C to +85°C.

Specifications and features

• 14-bit, 40 MSPS/65 MSPS ADC
• Low power - 550 mW at 65 MSPS, 300 mW at 40 MSPS
• On-chip reference and sample-and-hold
• 750 MHz analog input bandwidth
• SNR > 73 dBc to Nyquist @ 65 MSPS
• SFDR > 86 dBc to Nyquist @ 65 MSPS
• Differential nonlinearity error = ±0.7 LSB
• Guaranteed no missing codes over full temperature range
• 1 V to 2 V p-p differential full-scale analog input range
• Single 5 V analog supply, 3.3 V/5 V driver supply
• Out-of-range indicator
• Straight binary or twos complement output data
• Clock duty cycle stabilizer
• Output-enable function
• 48-lead LQFP package

Application Scenarios

• Communication subsystems (microcell, picocell)
• Medical and high-end imaging equipment
• Test and measurement equipment

Comparison

• High accuracy and no missing codes over full temperature range
• Wide analog input range
• Low power consumption
• On-chip reference and sample-and-hold for convenience
• Different output data formats available

• Specific to analog to digital conversion applications
• Limited to 14-bit resolution