Datasheet

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 NUMBER
(1)
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
1+V
CC
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.
8V
REF
Voltage Reference Input
9+V
CC
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.
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 +6V
Power Dissipation .......................................................................... 250mW
Maximum Junction Temperature ................................................... +150°C
Operating Temperature Range .................................. –40°C to +125°C
(2)
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.