to-digital converter. It features low power operation
with automatic power down, a synchronous serial
interface, and a differential input. The reference volt-
age can be varied from 100mV to 5V, with a corre-
sponding resolution from 24µV to 1.22mV.
Low power, automatic power down, and small size
make the ADS7816 ideal for battery operated systems
or for systems where a large number of signals must be
acquired simultaneously. It is also ideal for remote
and/or isolated data acquisition. The ADS7816 is
available in an 8-pin plastic mini-DIP, an 8-lead SOIC,
or an 8-lead MSOP package.
APPLICATIONS
q
BATTERY OPERATED SYSTEMS
q
REMOTE DATA ACQUISITION
q
ISOLATED DATA ACQUISITION
SAR
Control
V
REF
D
OUT
+In
CDAC
–In
S/H Amp
Comparator
Serial
Interface
DCLOCK
CS/SHDN
International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111 • Twx: 910-952-1111
Analog Input ........................................................... –0.3V to (+V
CC
+ 0.3V)
Logic Input ............................................................. –0.3V to (+V
CC
+ 0.3V)
Case Temperature ......................................................................... +100°C
Junction Temperature .................................................................... +150°C
Storage Temperature ..................................................................... +125°C
External Reference Voltage .............................................................. +5.5V
NOTE: (1) Stresses above these ratings may permanently damage the device.
ELECTROSTATIC
DISCHARGE SENSITIVITY
Electrostatic discharge can cause damage ranging from per-
formance degradation to complete device failure. Burr-
Brown Corporation recommends that all integrated circuits
be handled and stored using appropriate ESD protection
methods.
ESD damage can range from subtle performance degrada-
tion 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
published specifications.
PIN CONFIGURATION
V
REF
+In
–In
GND
1
2
ADS7816
3
4
8-Pin PDIP,
8-Lead SOIC,
8-Lead MSOP
8
7
6
5
+V
CC
DCLOCK
D
OUT
CS/SHDN
PIN ASSIGNMENTS
PIN
1
2
3
4
5
6
7
8
NAME
V
REF
+In
–In
GND
CS/SHDN
D
OUT
DCLOCK
+V
CC
DESCRIPTION
Reference Input.
Non Inverting Input.
Inverting Input. Connect to ground or to remote ground sense point.
Ground.
Chip Select when LOW, Shutdown Mode when HIGH.
The serial output data word is comprised of 12 bits of data. In operation the data is valid on the falling edge of DCLOCK. The
second clock pulse after the falling edge of CS enables the serial output. After one null bit the data is valid for the next 12 edges.
Data Clock synchronizes the serial data transfer and determines conversion speed.
Power Supply.
PACKAGE/ORDERING INFORMATION
MAXIMUM
INTEGRAL
LINEARITY ERROR
(LSB)
±2
±2
±2
±2
±2
±2
±1
±1
±1
MAXIMUM
DIFFERENTIAL
LINEARITY ERROR
(LSB)
±2
±2
±2
±1
±1
±1
±0.75
±0.75
±0.75
PACKAGE
DRAWING
NUMBER
(1)
006
182
337
006
182
337
006
182
337
PRODUCT
ADS7816P
ADS7816U
ADS7816E
ADS7816PB
ADS7816UB
ADS7816EB
ADS7816PC
ADS7816UC
ADS7816EC
TEMPERATURE
RANGE
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
PACKAGE
Plastic DIP
SOIC
MSOP
Plastic DIP
SOIC
MSOP
Plastic DIP
SOIC
MSOP
NOTE: (1) For detailed drawing and dimension table, please see end of data sheet, or Appendix C of Burr-Brown IC Data Book.
The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN
assumes no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject
to change without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not
authorize or warrant any BURR-BROWN product for use in life support devices and/or systems.
