Datasheet

®
ADS774 4
ABSOLUTE MAXIMUM RATINGS
V
EE
to Digital Common ....................................................... +V
DD
to –16.5V
V
DD
to Digital Common .............................................................. 0V to +7V
Analog Common to Digital Common .................................................... ±1V
Control Inputs (CE, CS, A
O
, 12/8, R/C)
to Digital Common .................................................. –0.5V to V
DD
+0.5V
Analog Inputs (Ref In, Bipolar Offset, 10V
IN
)
to Analog Common ...................................................................... ±16.5V
20V
IN
to Analog Common .................................................................. ±24V
Ref Out .......................................................... Indefinite Short to Common,
Momentary Short to V
DD
Max Junction Temperature ............................................................ +165°C
Power Dissipation ........................................................................ 1000mW
Lead Temperature (soldering,10s) ................................................. +300°C
Thermal Resistance,
θ
JA
: Plastic DIPs ........................................ 100°C/W
SOIC ................................................... 100°C/W
ELECTROSTATIC
DISCHARGE SENSITIVITY
This integrated circuit can be damaged by ESD. Burr-Brown
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 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 its
published specifications.
1
2
3
4
5
Power-Up Reset
Control
Logic
Clock
12 Bits
Succesive Approximation Register
12
Bits
Three-State Buffers and Control
Nibble A
Nibble BNibble C
–
+
CDAC
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
+5VDC Supply
(V )
DD
A
O
–
R/C
–
12/8
CE
NC*
2.5V Ref
Out
Analog
Common
2.5V Ref
In
V
EE
Bipolar
Offset
10V Range
20V Range
Digital
Common
DB0 (LSB)
DB1
DB2
DB3
DB4
DB5
DB6
DB7
DB8
DB9
DB10
DB11 (MSB)
STATUS
*Not Internall
y
Connected
2.5V
Reference
CS
PACKAGE/ORDERING INFORMATION
TEMPERATURE LINEARITY PACKAGE DRAWING
PRODUCT SINAD
(1)
RANGE ERROR PACKAGE NUMBER
(2)
ADS774JE 68dB 0°C to +70°C ±1LSB 28-Pin 0.3" Plastic DIP 246
ADS774KE 70dB 0°C to +70°C ±1/2LSB 28-Pin 0.3" Plastic DIP 246
ADS774JP 68dB 0°C to +70°C ±1LSB 28-Pin 0.6" Plastic DIP 215
ADS774KP 70dB 0°C to +70°C ±1/2LSB 28-Pin 0.6" Plastic DIP 215
ADS774JU 68dB 0°C to +70°C ±1LSB 28-Lead SOIC 217
ADS774KU 70dB 0°C to +70°C ±1/2LSB 28-Lead SOIC 217
NOTES: (1) SINAD is Signal-to-(Noise + Distortion) expressed in dB. (2) For detailed drawing and dimension table, please see end of data sheet, or Appendix C of Burr-
Brown IC Data Book.
CONNECTION DIAGRAM