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ADS7812PBBN/a5000avaiLow-Power/ Serial 12-Bit Sampling ANALOG-TO-DIGITAL CONVERTER
ADS7812UTIN/a8avaiLow-Power/ Serial 12-Bit Sampling ANALOG-TO-DIGITAL CONVERTER
ADS7812UBBBN/a61avaiLow-Power/ Serial 12-Bit Sampling ANALOG-TO-DIGITAL CONVERTER


ADS7812P ,Low-Power/ Serial 12-Bit Sampling ANALOG-TO-DIGITAL CONVERTERSPECIFICATIONS (Cont.)At T = –40°C to +85°C, f = 40kHz, V = +5V ±5%, using internal reference, unle ..
ADS7812U ,Low-Power/ Serial 12-Bit Sampling ANALOG-TO-DIGITAL CONVERTERPIN CONFIGURATIONPIN # NAME DESCRIPTION1R1 Analog Input. See Tables I and IV.IN2 GND Ground3R2 Anal ..
ADS7812UB ,Low-Power/ Serial 12-Bit Sampling ANALOG-TO-DIGITAL CONVERTERFEATURES DESCRIPTION* 20µ s max CONVERSION TIME The ADS7812 is a low-power, single +5V supply, 12-b ..
ADS7813P ,Low-Power/ Serial 16-Bit Sampling ANALOG-TO-DIGITAL CONVERTERPIN CONFIGURATIONPIN # NAME DESCRIPTION1R1 Analog Input. See Tables I and IV.IN2 GND Ground3R2 Anal ..
ADS7813P ,Low-Power/ Serial 16-Bit Sampling ANALOG-TO-DIGITAL CONVERTERMAXIMUM RATINGSELECTROSTATICAnalog Inputs: R1 . ±16.5VIN DISCHARGE SENSITIVITYR2 ... GND – 0.3V to ..
ADS7813PB ,Low-Power/ Serial 16-Bit Sampling ANALOG-TO-DIGITAL CONVERTERELECTRICAL CHARACTERISTICSAt T = –40°C to +85°C, f = 40kHz, V = +5V ±5%, using internal reference, ..
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ADS7812P-ADS7812U-ADS7812UB
Low-Power, Serial 12-Bit Sampling Analog-To-Digital Converter 16-SOIC -40 to 85
Low-Power, Serial 12-Bit Sampling
ANALOG-TO-DIGIT AL CONVERTER
DESCRIPTION

The ADS7812 is a low-power, single +5V supply, 12-bit
sampling analog-to-digital converter. It contains a complete
12-bit capacitor-based SAR A/D with a sample/hold, clock,
reference, and serial data interface.
The converter can be configured for a variety of input ranges
including ±10V, ±5V, 0V to 10V, and 0.5V to 4.5V. A high
impedance 0.3V to 2.8V input range is also available (input
impedance > 10MΩ). For most input ranges, the input
voltage can swing to +16.5V or –16.5V without damage to
the converter.
A flexible SPI compatible serial interface allows data to be
synchronized to an internal or external clock. The ADS7812
is specified at a 40kHz sampling rate over the –40°C to
+85°C temperature range. It is available in a 0.3" DIP-16 or
an SO-16 package.
FEA TURES
20μs max CONVERSION TIME SINGLE +5V SUPPLY OPERATION PIN-COMPATIBLE WITH 16-BIT ADS7813 EASY-TO-USE SERIAL INTERFACE 0.3" DIP-16 AND SO-16 ±0.5LSB max INL AND DNL 72dB min SINAD USES INTERNAL OR EXTERNAL
REFERENCE
MULTIPLE INPUT RANGES 35mW max POWER DISSIPATION NO MISSING CODES 50μW POWER DOWN MODE
8kΩ(1)
40kΩ(1)
EXT/INT
DATACLK
DATA
BUSY PWRD CONV
R1IN
R3IN
REF
BUF
CAP
R2IN
NOTE: (1) Actual value may vary ±30%.
APPLICATIONS
DATA ACQUISITION SYSTEMS INDUSTRIAL CONTROL TEST EQUIPMENT DIGITAL SIGNAL PROCESSING
ADS7812

SBAS042A – MARCH 1997 – REVISED SEPTEMBER 2003
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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