ad420-32-reel Analog Devices, Inc., ad420-32-reel Datasheet - Page 3

• Manufacturer Part Number: ad420-32-reel
• Description: Serial Input 16-bit 4 Ma-20 Ma, 0 Ma-20 Ma Dac
• Manufacturer: Analog Devices, Inc.

REV. F
ABSOLUTE MAXIMUM RATINGS*
V
I
Digital Inputs to GND . . . . . . . . . . . . . . . . . . . –0.5 V to +7 V
Digital Output to GND . . . . . . . . . . . . . –0.5 V to V
V
Storage Temperature . . . . . . . . . . . . . . . . . . –65 C to +150 C
Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . . +300 C
Thermal Impedance:
*Stresses above those listed under Absolute Maximum Ratings may cause perma-
Model
AD420AN-32 – 40 C to +85 C
AD420AR-32 – 40 C to +85 C
*N = Plastic DIP, R = Plastic SOIC.
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection.
Although the AD420 features proprietary ESD protection circuitry, permanent damage may
occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD
precautions are recommended to avoid performance degradation or loss of functionality.
OUT
nent damage to the device. This is a stress rating only; functional operation of the
device at these or any other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect device reliability.
CC
LL
AD420AR/AN-32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 V
SOIC (R) Package . . . . . . . . . . . . . . . . . . . . . .
PDIP (N) Package . . . . . . . . . . . . . . . . . . . . . .
and REF OUT: Outputs Safe for Indefinite Short to Ground
to GND
to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V
RANGE SELECT 2
RANGE SELECT 1
FAULT DETECT
Temperature
Range
DATA OUT
DATA IN
CLOCK
CLEAR
LATCH
PIN DESIGNATIONS
ORDERING GUIDE
GND
V
NC
NC
L L
NC = NO CONNECT
(Not to Scale)
TOP VIEW
AD420
Max Operating Package
Voltage
32 V
32 V
NC
V
NC
CAP2
CAP1
BOOST
I
V
OFFSET TRIM
REF IN
REF OUT
NC
OUT
CC
OUT
JA
JA
LL
= 75 C/W
= 50 C/W
Options*
N-24
R-24
+ 0.3 V
CC
–3–
CLEAR
0
1
X
X
X
X
DATA OUT
SELECT 1
SELECT 2
REF OUT
DATA IN
CLOCK
RANGE
RANGE
REF IN
CLEAR
LATCH
V
LL
15
14
10
6
8
2
7
9
5
4
Inputs
Range
Select 2
X
X
0
0
1
1
Figure 1. Functional Block Diagram
REGISTER
DATA I/P
Table I. Truth Table
REFERENCE
OFFSET
CLOCK
Range
Select 1
X
X
0
1
0
1
16-BIT
TRIM
DAC
16
AD420
CAP 1
SWITCHED
FILTERING
CURRENT
SOURCES
20
4k
AND
WARNING!
V
CAP 2
Operation
Normal Operation
Output at Bottom of Span
0 V–5 V Range
4 mA–20 mA Range
0 mA–20 mA Range
0 mA–24 mA Range
23
CC
21
GND
11
40
ESD SENSITIVE DEVICE
1.25k
AD420
19
18
17
3
BOOST
V
FAULT
DETECT
I
OUT
OUT