ADS7841

2

SBAS084B

PIN CONFIGURATIONS

Top View

MINIMUM

MAXIMUM

RELATIVE

GAIN

SPECIFICATION

PACKAGE

ACCURACY

ERROR

TEMPERATURE

PACKAGE

DRAWING

ORDERING

TRANSPORT

PRODUCT

(LSB)

(LSB)

RANGE

PACKAGE

DESIGNATOR

NUMBER

MEDIA

ADS7841E

±2

±4

–40

°C to +85°C

SSOP-16

DBQ

322

ADS7841E

Rails

"

"

"

"

"

"

"

ADS7841E/2K5

Tape and Reel

ADS7841P

±2

"

–40

°C to +85°C

DIP-16

N

180

ADS7841P

Rails

ADS7841EB

±1

±3

–40

°C to +85°C

SSOP-16

DBQ

322

ADS7841EB

Rails

"

"

"

"

"

"

"

ADS7841EB/2K5

Tape and Reel

ADS7841PB

±1

"

–40

°C to +85°C

DIP-16

N

180

ADS7841PB

Rails

ADS7841ES

±2

±4

–40

°C to +125°C

SSOP-16

DBQ

322

ADS7841ES/2K5

Tape and Reel

NOTES: (1) 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 “ADS7841E/2K5” will get a single 2500-piece Tape and Reel.

PACKAGE/ORDERING INFORMATION

1

2

3

4

5

6

7

8

+V

CC

CH0

CH1

CH2

CH3

COM

SHDN

V

REF

DCLK

CS

DIN

BUSY

DOUT

MODE

GND

+V

CC

16

15

14

13

12

11

10

9

ADS7841

1

2

3

4

5

6

7

8

+V

CC

CH0

CH1

CH2

CH3

COM

SHDN

V

REF

DCLK

CS

DIN

BUSY

DOUT

MODE

GND

+V

CC

16

15

14

13

12

11

10

9

ADS7841

DIP

SSOP

PIN DESCRIPTIONS

PIN

NAME

DESCRIPTION

Power Supply, 2.7V to 5V

2

CH0

Analog Input Channel 0

3

CH1

Analog Input Channel 1

4

CH2

Analog Input Channel 2

5

CH3

Analog Input Channel 3

6

COM

Ground Reference for Analog Inputs. Sets zero code voltage in single-ended mode. Connect this pin to ground or ground reference

point.

7

SHDN

Shutdown. When LOW, the device enters a very low power shutdown mode.

Voltage Reference Input

Power Supply, 2.7V to 5V

10

GND

Ground

11

MODE

Conversion Mode. When LOW, the device always performs a 12-bit conversion. When HIGH, the resolution is set by the MODE bit in

the CONTROL byte.

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 conversion process and synchronizes serial data I/O.

Digital Inputs to GND ........................................................... –0.3V to +6V

Power Dissipation .......................................................................... 250mW

Maximum Junction Temperature ................................................... +150

°C

Operating Temperature Range .................................. –40

Storage Temperature Range ......................................... –65

°C to +150°C

Lead Temperature (soldering, 10s) ............................................... +300

°C

NOTES: (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. (2) ADS7841ES

0nly. All other grades are: –40

°C to +85°C.

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.