PIN CONFIGURATION
Top View
SSOP
PIN DESCRIPTION
PIN
1
2
3
4
5
6
7
8
9
10
11
12
NAME
+V
CC
UL
UR
LL
LR
GND
WIPER
AUXIN
V
REF
+V
CC
PENIRQ
DOUT
DESCRIPTION
Power Supply, 2.0V to 5V.
Upper Left Panel Driver (V
CC
ON/OFF)
Upper Right Panel Driver (switch between V
CC
and GND)
Lower Left Panel Driver (switch between GND
and V
CC
)
Lower Right Panel Driver (GND ON/OFF)
Ground
Panel Input
Auxiliary Input
Voltage Reference Input
Power Supply, 2.0V to 5V.
Pen Interrupt. Open anode output (requires 10kΩ
to 100kΩ pull-up resistor externally).
Serial Data Output. Data is shifted on the falling
edge of DCLK. This output is high impedance
when CS is HIGH.
Busy Output. This output is high impedance when
CS is HIGH.
Serial Data Input. If CS is LOW, data is latched on
rising edge of DCLK.
Chip Select Input. Controls conversion timing and
enables the serial input/output register.
External Clock Input. This clock runs the SAR con-
version process and synchronizes serial data I/O.
+V
CC
UL
UR
LL
LR
GND
WIPER
AUXIN
1
2
3
4
ADS7845
5
6
7
8
16
15
14
13
12
11
10
9
DCLK
CS
DIN
BUSY
DOUT
PENIRQ
+V
CC
V
REF
13
14
BUSY
DIN
CS
DCLK
ABSOLUTE MAXIMUM RATINGS
(1)
+V
CC
to GND ........................................................................ –0.3V to +6V
Analog Inputs to GND ............................................ –0.3V to +V
CC
+ 0.3V
Digital Inputs to GND ............................................. –0.3V to +V
CC
+ 0.3V
Power Dissipation .......................................................................... 250mW
Maximum Junction Temperature ................................................... +150°C
Operating Temperature Range ........................................ –40°C to +85°C
Storage Temperature Range ......................................... –65°C to +150°C
Lead Temperature (soldering, 10s) ............................................... +300°C
NOTE: (1) Stresses above those listed under “Absolute Maximum Ratings”
may cause permanent damage to the device. Exposure to absolute maximum
conditions for extended periods may affect device reliability.
15
16
ELECTROSTATIC
DISCHARGE SENSITIVITY
This integrated circuit can be damaged by ESD. Burr-Brown
recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling and
installation procedures can cause damage.
ESD damage can range from subtle performance degradation to
complete device failure. Precision integrated circuits may be
more susceptible to damage because very small parametric
changes could cause the device not to meet its published specifi-
cations.
PACKAGE/ORDERING INFORMATION
MAXIMUM
INTEGRAL
LINEARITY
ERROR (LSB)
±2
PACKAGE
DRAWING
NUMBER
(1)
322
SPECIFICATION
TEMPERATURE
RANGE
–40°C to +85°C
PRODUCT
ADS7845E
PACKAGE
16-Lead SSOP
ORDERING
NUMBER
(2)
ADS7845E
ADS7845E/2K5
TRANSPORT
MEDIA
Rails
Tape and Reel
"
"
"
"
"
NOTES: (1) For detailed drawing and dimension table, please see end of data sheet, or Appendix C of Burr-Brown IC Data Book. (2) Models with a slash (/) are
available only in Tape and Reel in the quantities indicated (e.g., /2K5 indicates 2500 devices per reel). Ordering 2500 pieces of “ADS7845E/2K5” will get a single
2500-piece Tape and Reel. For detailed Tape and Reel mechanical information, refer to Appendix B of Burr-Brown IC Data Book.
®
3
ADS7845
BURR-BROWN [ BURR-BROWN CORPORATION ]
