SPT1175 Datasheet | SPT

FEATURES - - - - - - - 20 MSPS Maximum Conversion Rate Internal Sample-and-Hold Function 90 m W Power Dissipation Internal Voltage Reference Single +5.0 V Power Supply Three-State TTL-Outputs CMOS patible Clock APPLICATIONS - - - - - - Video Digitizing Image Scanners Personal puter 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 patible and the tri-state outputs are TTL-patible. 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 mercial 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 Reference Matrix Fine Sampling Amplifier Fine Sampling Amplifier D7 (MSB) Encoder Analog Mux Latch Timing Generator VRTS AGND AVD DVDD AGND Signal Processing Technologies, Inc. 4755 Forge Road, Colorado Springs, Colorado 80907, USA Phone: (719) 528-2300 FAX: (719) 528-2370 .. ABSOLUTE MAXIMUM RATINGS (Beyond which damage may occur)(1) 25 °C Temperature Operating Temperature 0 to +70 °C Junction Temperature 175 °C Lead Temperature, (soldering 10 seconds) 300 °C Storage Temperature...