12-BIT / 20 MSPS / 79 mW A/D CONVERTER
SPT7935
12-BIT, 20 MSPS, 79 mW A/D CONVERTER
FEATURES
• • • • • • • 12-Bit, 20 MSPS Analog-to-Digital Converter Monolith...
Description
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 .....................................................................
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