BLOCK DIAGRAM
Successive Approximation Register and Control Logic
Clock
CDAC
Output
Latches
and
Three
State
BUSY
575Ω
±2.5V Input
Three
State
Parallel
Data
2.5kΩ
Comparator
Drivers
Bus
Cap
Buffer
18kΩ
4.8kΩ
8.6kΩ
Internal
Ref
2.5V Ref Out
PACKAGE AND ORDERING INFORMATION(1)
ABSOLUTE MAXIMUM RATINGS
PACKAGE DRAWING
NUMBER
Analog Inputs: VIN .............................................................................. ±25V
REF ..................................... +VANA +0.3V to AGND2 –0.3V
MODEL
PACKAGE
CAP ........................................... Indefinite Short to AGND2
ADS7831P
ADS7831U
28-Pin Plastic DIP
28-Pin SOIC
246
217
Momentary Short to +VANA
Ground Voltage Differences: DGND, AGND1, AGND2 ................... ±0.3V
+VANA .................................................................................................... +7V
+VDIG to +VANA ................................................................................... +0.3V
+VDIG ...................................................................................................... 7V
–VANA .................................................................................................... –7V
Digital Inputs ............................................................. –0.3V to +VDIG +0.3V
Maximum Junction Temperature ................................................... +165°C
Internal Power Dissipation ............................................................. 825mW
Lead Temperature (soldering, 10s) ................................................ +300°C
NOTE: (1) For detailed drawing and dimension table, please see end of data
sheet, or Appendix D of Burr-Brown IC Data Book.
ELECTROSTATIC
DISCHARGE SENSITIVITY
Electrostatic discharge can cause damage ranging from
performance degradation to complete device failure. Burr-
BrownCorporationrecommendsthatallintegrated circuitsbe
handled and stored using appropriate ESD protection
methods.
The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes
no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject to change
without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant
any BURR-BROWN product for use in life support devices and/or systems.
®
3
ADS7831
BB [ BURR-BROWN CORPORATION ]
