PIN CONFIGURATION
PIN DESCRIPTION
PIN
NAME
DESCRIPTION
Top View
SSOP
1
2
+VCC
X+
Power Supply, 2.7V to 5V.
X+ Position Input. ADC input Channel 1.
Y+ Position Input. ADC input Channel 2.
X– Position Input.
3
Y+
+VCC
X+
1
2
3
4
5
6
7
8
16 DCLK
15 CS
4
X–
5
Y–
Y– Position Input.
6
GND
IN3
Ground
Y+
14 DIN
7
Auxiliary Input 1. ADC input Channel 3.
Auxiliary Input 2. ADC input Channel 4.
Voltage Reference Input
8
IN4
X–
13 BUSY
12 DOUT
11 PENIRQ
10 +VCC
9
VREF
+VCC
PENIRQ
ADS7843
Y–
10
11
Power Supply, 2.7V 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.
GND
IN3
IN4
12
DOUT
9
VREF
13
14
15
16
BUSY
DIN
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.
CS
Chip Select Input. Controls conversion timing and
enables the serial input/output register.
ABSOLUTE MAXIMUM RATINGS(1)
DCLK
External Clock Input. This clock runs the SAR con-
version process and synchronizes serial data I/O.
+VCC to GND ........................................................................ –0.3V to +6V
Analog Inputs to GND ............................................ –0.3V to +VCC + 0.3V
Digital Inputs to GND ............................................. –0.3V to +VCC + 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
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.
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.
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
PACKAGE
DRAWING
NUMBER(1)
SPECIFICATION
TEMPERATURE
RANGE
ORDERING
NUMBER(2)
TRANSPORT
MEDIA
PRODUCT
ERROR (LSB)
PACKAGE
ADS7843E
±2
16-Lead SSOP
322
–40°C to +85°C
ADS7843E
Rails
"
"
"
"
"
ADS7843E/2K5
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 “ADS7843E/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
ADS7843
BB [ BURR-BROWN CORPORATION ]
