SPT7730
8-BIT, 3.0 MSPS, SERIAL OUTPUT A/D CONVERTER
FEATURES
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8-Bit, 1 kHz to 3.0 MSPS Analog-to-Digital Converter
Monolithic CMOS
Serial Output
Internal Sample-and-Hold
Analog Input Range: 0 to 2 V Nominal; 3.3 V Max
Power Dissipation (Excluding Reference Ladder)
45 mW at +5 V
16 mW at +3 V
• Single Power Supply: +3 V to +5 V Range
• High ESD Protection: 3,000 V Minimum
APPLICATIONS
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Handheld and Desktop Scanners
DSP Interface Applications
Portable Digital Radios
Portable and Handheld Applications
Automotive Applications
Remote Sensing
GENERAL DESCRIPTION
The CADEKA 8-bit, 3.0 MSPS, serial analog-to-digital con-
verter delivers excellent high speed conversion performance
with low cost and low power. The serial port protocol is
compatible with the serial peripheral interface (SPI) or
MICROWIRE™ industry standard, high-speed synchronous
MPU interfaces. The large input bandwidth and fast transient
response time allow for CCD applications operating up to
3.0 MSPS.
The device can operate with a power supply range from +3 V
to +5 V with very low power dissipation. The small package
size makes this part excellent for handheld applications
where board space is a premium. The SPT7730 is available
in an 8-lead SOIC package over the commercial tempera-
ture range. Contact the factory for availability of die and
industrial temperature range versions.
BLOCK DIAGRAM
Ground
VDD
Track-and-Hold
SAR
Analog Input
8-Bit
A/D
Serial
Output
Logic
Data Out
Clock
Timing And Control
Start Convert
VREF+
VREF-
CADEKA [ CADEKA MICROCIRCUITS LLC. ]
