SPT7810
10-BIT, 20 MSPS, ECL OUTPUT A/D CONVERTER
FEATURES
• Monolithic 20 MSPS Converter
• On-Chip Track/Hold
• Bipolar
±2.0 V Analog Input
• 60 dB SNR @ 1 MHz Input
• Low Power (1.3 W Typical)
• 5 pF input Capacitance
• ECL Outputs
APPLICATIONS
• Medical Imaging
• Professional Video
• Radar Receivers
• Instrumentation
• Electronic Warfare
• Digital Communications
Signal Processing Technologies, Inc.
4755 Forge Road, Colorado Springs, Colorado 80907, USA
Phone: (719) 528-2300
FAX: (719) 528-2370
Analog
Prescaler
10
Digital
Output
Successive Interpolation
Stage i
Successive Interpolation
Stage i+1
Successive Interpolation
Stage N
Analog
Input
4
Coarse
A/D
T/H Amplifier
Bank
GENERAL DESCRIPTION
The SPT7810 A/D converter is a 10-bit monolithic converter
capable of word rates of a minimum of 20 MSPS. On board
track/hold function assures excellent dynamic performance
without the need for external components. Drive require-
ment problems are minimized with an input capacitance of
only 5 pF.
Inputs and outputs are ECL to provide a higher level of noise
immunity in high speed system applications. An overrange
output signal is provided to indicate overflow conditions.
Output data format is straight binary. Power dissipation is
very low at only 1.3 watts with power supply voltages of +5.0
and -5.2 volts. The SPT7810 also provides a wide input
voltage swing of
±2.0 volts.
The SPT7810 is available in a 28-lead ceramic sidebrazed
DIP, PDIP, and die form. Commercial and industrial tempera-
ture ranges are currently offered. Contact the factory for
availability of military temperature range and /883 processed
units.
BLOCK DIAGRAM
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