Product Details
●The AD9243 is a 3 MSPS, single supply, 14-bit analog-to- digital 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 full operating temperature range.
●The input of the AD9243 is highly flexible, allowing for easy interfacing to imaging, communications, medical, and data- acquisition systems. A truly differential input structure allows for both single-ended and differential input interfaces of varying input spans. The sample-and-hold amplifier (SHA) is equally suited for both multiplexed systems that switch full-scale voltage levels in successive channels as well as sampling single-channel inputs at frequencies up to and beyond the Nyquist rate. Also, the AD9243 performs well in communication systems employing Direct-IF Down Conversion since the SHA in the differential input mode can achieve excellent dynamic performance _well beyond_ its specified Nyquist frequency of 1.5 MHz.
●A single clock input is used to control all internal conversion cycles. The digital output data is presented in straight binary output format. An out-of-range (OTR) signal indicates an over-flow condition which can be used with the most significant bit to determine low or high overflow.
●### Features and Benefits
● Low Power Dissipation: 110 mW
● Single +5 V Supply
● Integral Nonlinearity Error: 2.5 LSB
● Differential Nonlinearity Error: 0.6 LSB
● Input Referred Noise: 0.36 LSB
● On-Chip Sample-and-Hold Amplifier and Voltage Reference
● Signal-to-Noise and Distortion
●Ratio: 79.0 dB
● Spurious-Free Dynamic
●Range: 91.0 dB
● Out-of-Range Indicator
● Straight Binary Output Data
● 44-Lead MQFP
