AD574A
+5V SUPPLY
V
LOGIC
DATA MODE SELECT
12/8
CHIP SELECT
CS
BYTE ADDRESS/
SHORT CYCLE
A
O
READ/CONVERT
R/C
CHIP ENABLE
CE
+12/+15V SUPPLY
V
CC
+10V REFERENCE
REF OUT
ANALOG COMMON
AC
REFERENCE INPUT
REF IN
-12/-15V SUPPLY
V
EE
BIPOLAR OFFSET
BIP OFF
10V SPAN INPUT
10V
IN
1
2
3
4
5
6
7
COMP 12
8
9
10
19.95k
11
12
13
5k
9.95k
5k
DAC N
V
EE
10V
REF
I
DAC
I
DAC
=
4 x N x I
REF
I
REF
8k
CLOCK
3k
SAR
12
CONTROL
3
S
T
A
T
E
O
U
T
P
U
T
B
U
F
F
E
R
S
MSB
28
N
I
B
B
L
E
A
N
I
B
B
L
E
B
N
I
B
B
L
E
C
LSB
STATUS
STS
DB11
27
MSB
26 DB10
25 DB9
24 DB8
23 DB7
22 DB6
21 DB5
20 DB4
DIGITAL
DATA
OUTPUTS
19 DB3
18 DB2
17 DB1
DB0
16 LSB
15 DIGITAL COMMON
DC
20V SPAN INPUT 14
20V
IN
AD574A
12
AD574A Block Diagram and Pin Configuration
ABSOLUTE MAXIMUM RATINGS*
(Specifications apply to all grades, except where noted)
V
CC
to Digital Common . . . . . . . . . . . . . . . . . . 0 V to +16.5 V
V
EE
to Digital Common . . . . . . . . . . . . . . . . . . . 0 V to –16.5 V
V
LOGIC
to Digital Common . . . . . . . . . . . . . . . . . . 0 V to +7 V
Analog Common to Digital Common . . . . . . . . . . . . . . .
±
1 V
Control Inputs (CE,
CS,
A
O
12/8, R/C) to
Digital Common . . . . . . . . . . . . . . –0.5 V to V
LOGIC
+ 0.5 V
Analog Inputs (REF IN, BIP OFF, 10 V
IN
) to
Analog Common . . . . . . . . . . . . . . . . . . . . . . . . . V
EE
to V
CC
20 V
IN
to Analog Common . . . . . . . . . . . . . . . . . . . . . .
±
24 V
REF OUT . . . . . . . . . . . . . . . . . . Indefinite Short to Common
Momentary Short to V
CC
Chip Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175°C
Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 825 mW
Lead Temperature (Soldering, 10 sec). . . . . . . . . . . . . +300°C
Storage Temperature (Ceramic) . . . . . . . . . . –65°C to +150°C
(Plastic) . . . . . . . . . . . . . . . . . . . . . . . . . . . –25°C to +100°C
*Stresses above those listed under “Absolute Maximum Ratings” may cause
permanent damage to the device. This is a stress rating only and functional
operation of the device at these or any other conditions above those indicated in the
operational sections of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
ORDERING GUIDE
Model
1
Temperature
Range
0°C to +70°C
0°C to +70°C
0°C to +70°C
–55°C to +125°C
–55°C to +125°C
–55°C to +125°C
Linearity Error
Max (T
MIN
to T
MAX
)
±
1 LSB
±
1/2 LSB
±
1/2 LSB
±
1 LSB
±
1 LSB
±
1 LSB
Resolution
No Missing Codes
(T
MIN
to T
MAX
)
11 Bits
12 Bits
12 Bits
11 Bits
12 Bits
12 Bits
Max
Full Scale
T.C. (ppm/°C)
50.0
27.0
10.0
50.0
25.0
12.5
AD574AJ(X)
AD574AK(X)
AD574AL(X)
AD574AS(X)
2
AD574AT(X)
2
AD574AU(X)
2
NOTES
1
X = Package designator. Available packages are: D (D-28) for all grades. E (E-28A) for J and K grades and /883B processed S, T
and U grades. N (N-28) for J, K, and L grades. P (P-28A) for PLCC in J, K grades. Example: AD574AKN is K grade in plastic DIP.
2
For details on grade and package offerings screened in accordance with MIL-STD-883, refer to Analog Devices Military Products
Databook.
–4–
REV. B
AD [ ANALOG DEVICES ]
