Datasheet Texas Instruments ADS774H — 数据表

AD
S7 74x ADS774H AD S7 74x www.ti.com . SBAS443 – AUGUST 2009 Microprocessor-Compatible Sampling
CMOS ANALOG-TO-DIGITAL CONVERTER
FEATURES DESCRIPTION 1 Drop-In Replacement for the ADS774 Complete Sampling ADC with Reference,
Clock, and Microprocessor Interface Fast Acquisition and Conversion: 8.5Вµs Max
Over Temperature Eliminates External Sample/Hold in Most
Applications Ensured AC and DC Performance Single +5V Supply Operation Low Power: 120mW Max Package Options: SO, 0.6in and 0.3in DIPs(1)
2 APPLICATIONS The ADS774H is a 12-bit, successive-approximation
analog-to-digital converter (ADC) that uses an
innovative capacitor array (CDAC) implemented in
low-power CMOS technology. This device is a drop-in
replacement for the ADS774, with internal sampling,
much lower power consumption, and the ability to
operate from a single +5V supply.
The ADS774H is complete with an internal clock,
microprocessor interface, three-state outputs, and
internal scaling resistors for input ranges of 0V to
+10V, 0V to +20V, В±5V, or В±10V. The maximum
throughput time is 8.5Вµs over the full operating
temperature range, including both acquisition and
conversion.
Complete user control over the internal sampling
function facilitates elimination of external sample/hold …