ADS7843

2

SBAS090B

www.ti.com

PIN

NAME

DESCRIPTION

Power Supply, 2.7V to 5V.

2

X+

X+ Position Input. ADC input Channel 1.

3

Y+

Y+ Position Input. ADC input Channel 2.

4X–

X– Position Input

5Y–

Y– Position Input

6

GND

Ground

7

IN3

Auxiliary Input 1. ADC input Channel 3.

8

IN4

Auxiliary Input 2. ADC input Channel 4.

Voltage Reference Input

10

Power Supply, 2.7V to 5V.

11

PENIRQ

Pen Interrupt. Open anode output (requires 10k

Ω

to 100k

Ω pull-up resistor externally).

12

DOUT

Serial Data Output. Data is shifted on the falling

edge of DCLK. This output is high impedance

when CS is HIGH.

13

BUSY

Busy Output. This output is high impedance when

CS is HIGH.

14

DIN

Serial Data Input. If CS is LOW, data is latched on

rising edge of DCLK.

15

CS

Chip Select Input. Controls conversion timing and

enables the serial input/output register.

16

DCLK

External Clock Input. This clock runs the SAR con-

version process and synchronizes serial data I/O.

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.

ELECTROSTATIC

DISCHARGE SENSITIVITY

This integrated circuit can be damaged by ESD. Texas Instru-

ments 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

specifications.

1

2

3

4

5

6

7

8

+V

CC

X+

Y+

X–

Y–

GND

IN3

IN4

DCLK

CS

DIN

BUSY

DOUT

PENIRQ

+V

CC

V

REF

16

15

14

13

12

11

10

9

ADS7843

PIN CONFIGURATION

Top View

SSOP

PIN DESCRIPTION

MAXIMUM

INTEGRAL

SPECIFIED

LINEARITY

PACKAGE

TEMPERATURE

PACKAGE

ORDERING

TRANSPORT

PRODUCT

ERROR (LSB)

PACKAGE-LEAD

RANGE

MARKING

NUMBER

MEDIA, QUANTITY

ADS7843E

±2

SSOP-16

DBQ

–40

°C to +85°C

ADS7843E

ADS7843E

Rails, 100

""

"

"

"

ADS7843E

ADS7843E/2K5

Tape and Reel, 2500

NOTES: (1) For the most current specifications and package information, refer to our web site at www.ti.com.

PACKAGE/ORDERING INFORMATION