SPT7935

SPT7935 12-BIT, 20 MSPS, 79 mW A/D CONVERTER FEATURES 12-Bit, 20 MSPS Analog-to-Digital Converter Monolithic CMOS Internal Track-and-Hold Low Input Capacitance: 1.4 pF Low Power Dissipation: 79 mW 2.8 – 3.6 V Power Supply Range TTL-Compatible Outputs APPLICATIONS CCD Imaging Cameras and Sensors Medical Imaging RF Communications Document and Film Scanners Electro-Optics Transient Signal Analysis Handheld Equipment GENERAL DESCRIPTION The SPT7935 12-bit, 20 MSPS analog-to-digital converter has a pipelined converter architecture built in a CMOS process. It delivers high performance with a typical power dissipation of only 79 mW. With low distortion and high dynamic range, this device offers the performance needed for imaging, multimedia, telecommunications and instrumentation applications. The SPT7935 is available in a 44-lead Thin Quad Flat Pack (TQFP) package in the industrial temperature range (–40 to +85 °C). BLOCK DIAGRAM ADC DAC + – G=2 D<1…0> Pipeline Stage VIN+ VIN– VREF+ VREF– CLK Clock Driver Digital Delays, Error Correction and Output 12 Stage 1 Stage 2 Stage 9 Stage 10 2-Bit ADC Digital Output (D0 – D11) ABSOLUTE MAXIMUM RATINGS (Beyond which damage may occur)1 25 °C Supply Voltages VDD1 .................................................................... –0.5 V to +6 V VDD2 .................................................................... –0.5 V to +6 V VDD3 .....................................................................