ABSOLUTE MAXIMUM RATINGS(1)
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.
+VCC to GND ........................................................................ –0.3V to +6V
Analog Inputs to GND ............................................ –0.3V to +VCC + 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
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.
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.
PACKAGE/ORDERING INFORMATION
MINIMUM
RELATIVE
ACCURACY
(LSB)
MAXIMUM
GAIN
ERROR
(LSB)
SPECIFICATION
TEMPERATURE
RANGE
PACKAGE
DRAWING
NUMBER
PACKAGE
DESIGNATOR
ORDERING
NUMBER(1)
TRANSPORT
MEDIA
PRODUCT
PACKAGE
ADS7841E
"
ADS7841P
ADS7841EB
"
±2
"
±2
±1
"
±4
"
"
±3
"
"
–40°C to +85°C
"
–40°C to +85°C
–40°C to +85°C
"
SSOP-16
"
DIP-16
SSOP-16
"
DBQ
"
N
DBQ
"
N
322
"
180
322
"
ADS7841E
ADS7841E/2K5 Tape and Reel
ADS7841P
ADS7841EB
ADS7841EB/2K5 Tape and Reel
ADS7841PB Rails
ADS7841ES/2K5 Tape and Reel
Rails
Rails
Rails
ADS7841PB
ADS7841ES
±1
±2
–40°C to +85°C
–40°C to +125°C
DIP-16
SSOP-16
180
322
±4
DBQ
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.
PIN CONFIGURATIONS
Top View
DIP
SSOP
+VCC
CH0
1
2
3
4
5
6
7
8
16 DCLK
15 CS
+VCC
CH0
1
2
3
4
5
6
7
8
16 DCLK
15 CS
CH1
14 DIN
CH1
14 DIN
CH2
13 BUSY
12 DOUT
11 MODE
10 GND
CH2
13 BUSY
12 DOUT
11 MODE
10 GND
ADS7841
ADS7841
CH3
CH3
COM
SHDN
VREF
COM
SHDN
VREF
9
+VCC
9
+VCC
PIN DESCRIPTIONS
PIN
NAME
DESCRIPTION
1
2
3
4
5
6
+VCC
CH0
CH1
CH2
CH3
COM
Power Supply, 2.7V to 5V
Analog Input Channel 0
Analog Input Channel 1
Analog Input Channel 2
Analog Input Channel 3
Ground Reference for Analog Inputs. Sets zero code voltage in single-ended mode. Connect this pin to ground or ground reference
point.
7
8
SHDN
VREF
Shutdown. When LOW, the device enters a very low power shutdown mode.
Voltage Reference Input
Power Supply, 2.7V to 5V
Ground
9
+VCC
GND
10
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
13
14
15
16
DOUT
BUSY
DIN
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.
CS
Chip Select Input. Controls conversion timing and enables the serial input/output register.
External Clock Input. This clock runs the SAR conversion process and synchronizes serial data I/O.
DCLK
ADS7841
2
SBAS084B