SPT7810
10-BIT, 20 MSPS, ECL OUTPUT A/D CONVERTER
FEATURES
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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
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Medical Imaging
Professional Video
Radar Receivers
Instrumentation
Electronic Warfare
Digital Communications
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
Analog
Input
Coarse
A/D
4
Analog
Prescaler
T/H Amplifier
Bank
Decoding Network
Digital
Output
10
Successive Interpolation
Stage i
Successive Interpolation
Stage i+1
Successive Interpolation
Stage N
CADEKA [ CADEKA MICROCIRCUITS LLC. ]
