SPT1175

www.DataSheet4U.com SPT1175 8-BIT, 20 MSPS CMOS A/D CONVERTER FEATURES 20 MSPS Maximum Conversion Rate Internal Sample-and-Hold Function 90 mW Power Dissipation Internal Voltage Reference Single +5.0 V Power Supply Three-State TTL-Outputs CMOS Compatible Clock APPLICATIONS Video Digitizing Image Scanners Personal Computer Video Medical Ultrasound Multimedia Digital Television GENERAL DESCRIPTION The SPT1175 is a CMOS two-step A/D converter capable of digitizing full scale analog input signals into 8-bit digital words at a sample rate of 20 MSPS. For most applications, no external sample-and-hold or video driving amplifiers are required due to the device's narrow aperture time, wide bandwidth, and low input capacitance. The SPT1175 operates from a single +5.0 V power supply and has an internal voltage reference which eliminates the need for external reference circuitry. All digital inputs are CMOS compatible and the tri-state outputs are TTL-compatible. The SPT1175 is ideal for most video and image processing applications that require low power dissipation and low cost. The SPT1175 is available in 24-lead plastic SOIC, plastic DIP, and PLCC packages over the commercial temperature range (0 to +70 °C). It is also available in die form. BLOCK DIAGRAM VRB VRBS DVDD DGND OE Coarse Sampling Amplifier Latch Encoder DØ (LSB) D1 Error Correction Circuit Data Latches and 3-State Output Buffer D2 D3 D4 D5 D6 VIN Reference Matrix Fine Sampling Amplifier...