AD9241

a FEATURES Monolithic 14-Bit, 1.25 MSPS A/D Converter Low Power Dissipation: 60 mW Single +5 V Supply Integral Nonlinearity Error: 2.5 LSB Differential Nonlinearity Error: 0.6 LSB Input Referred Noise: 0.36 LSB Complete: On-Chip Sample-and-Hold Amplifier and Voltage Reference Signal-to-Noise and Distortion Ratio: 78.0 dB Spurious-Free Dynamic Range: 88.0 dB Out-of-Range Indicator Straight Binary Output Data 44-Pin MQFP VINA VINB CML CAPT CAPB VREF SENSE Complete 14-Bit, 1.25 MSPS Monolithic A/D Converter AD9241 FUNCTIONAL BLOCK DIAGRAM CLK SHA MDAC1 GAIN = 16 A/D MDAC2 GAIN = 8 A/D MDAC3 GAIN = 8 A/D AVDD DVDD DRVDD 5 4 4 A/D 5 4 14 OUTPUT BUFFERS 4 4 DIGITAL CORRECTION LOGIC OTR BIT 1 (MSB) MODE SELECT 1V AD9241 REFCOM AVSS DVSS DRVSS BIT 14 (LSB) PRODUCT DESCRIPTION PRODUCT HIGHLIGHTS The AD9241 is a 1.25 MSPS, single supply, 14-bit analog-todigital converter (ADC). It combines a low cost, high speed CMOS process and a novel architecture to achieve the resolution and speed of existing hybrid implementations at a fraction of the power consumption and cost. It is a complete, monolithic ADC with an on-chip, high performance, low noise sample-and-hold amplifier and programmable voltage reference. An external reference can also be chosen to suit the dc accuracy and temperature drift requirements of the application. The device uses a multistage differential pipelined architecture with digital output error correction logic to guarantee no missing codes over the...