AD538–SPECIFICATIONS
(V =
S
15 V, T
A
= +25 C unless otherwise noted)
Max
Min
AD538BD
Typ
Max
Min
AD538SD
Typ
Max
Units
Parameters
MULTIPLIER DIVIDER
PERFORMANCE
Nominal Transfer
Function
Conditions
Min
AD538AD
Typ
10 V
≥
V
X
, V
Y
, V
Z
≥
0
V
Z
V
O
= V
Y
V
X
m
V
Z
V
O
= Vy
V
X
m
m
V
Z
V
O
= V
Y
V
X
m
m
400
µA ≥
I
X
, I
Y,
I
Z
≥
0
Total Error Terms
100:1 Input Range
1
100 mV
≤
V
X
≤
10 V
100 mV
≤
V
Y
≤
10 V
100 mV
≤
V
Z
≤
10 V
V
Z
≤
10 V
X
, m = 1.0
T
A
= T
MIN
to T
MAX
10 mV
≤
V
X
≤
10 V
1 mV
≤
V
Y
≤
10 V
0 mV
≤
V
Z
≤
10 V
V
Z
≤
10 V
X
, m = 1.0
T
A
= T
MIN
to T
MAX
I
Z
V
O
= 25 kΩ
×
I
Y
I
X
±0.5
±200
±1
±450
±1
±200
±100
±1
±450
±450
0.2
5
I
V
O
= 25 kΩ
×
I
Y
Z
I
X
±
0.25
±
100
±
0.5
±
350
±
0.5
±
100
±
750
±
1
±
350
±
350
0.2
5
I
Z
V
O
= 25 kΩ
×
I
Y
I
X
±
0.5
±
200
±
1.25
±
750
±
1
±
200
±
200
±
2
±
750
±
750
0.2
5
m
1
500
0.5
250
1
500
% of Reading +
µV
2
750
2
500
250
3
750
750
1
500
1
250
150
2
500
500
2.5
1000
2
500
250
4
1000
1000
% of Reading +
µV
% of Reading +
µV
+
µV ×
(V
Y
+ V
Z
)/V
X
% of Reading +
µV
+
µV ×
(V
Y
+ V
Z
)/V
X
Wide Dynamic Range
2
Exponent (m) Range
OUTPUT
CHARACTERISTICS
Offset Voltage
Output Voltage Swing
Output Current
T
A
= T
MIN
to T
MAX
V
Y
= 0, V
C
= –600 mV
T
A
= T
MIN
to T
MAX
R
L
= 2 kΩ
–11
5
±200
±450
10
1.4
400
500
750
+11
±
100
±
350
–11
5
10
1.4
400
250
500
+11
±
200
±
750
–11
5
10
1.4
400
500
1000
+11
µV
µV
V
mA
V/µs
kHz
FREQUENCY RESPONSE
Slew Rate
Small Signal Bandwidth 100 mV
≤
10 V
Y
, V
Z
,
V
X
≤
10 V
VOLTAGE REFERENCE
Accuracy
Additional Error
Output Current
Power Supply Rejection
+2 V = V
REF
+10 V = V
REF
POWER SUPPLY
Rated
Operating Range
3
PSRR
V
REF
= 10 V or 2 V
T
A
= T
MIN
or T
MAX
V
REF
= 10 V to 2 V
±4.5
V
≤
V
S
≤ ±
18 V
±13
V
≤
V
S
≤ ±18
V
R
L
= 2 kΩ
4.5
±4.5
V < V
S
<
±18
V
V
X
= V
Y
= V
Z
= 1 V
V
OUT
= 1 V
1
±25
±20
2.5
300
200
±15
0.5
50
30
1
600
500
±
15
±
20
2.5
300
200
±
15
25
30
1
600
500
±
25
±
30
2.5
300
200
±
15
50
50
mV
mV
mA
µV/V
µV/V
V
V
%/V
600
500
18
0.1
4.5
0.05
18
0.1
4.5
0.5
18
0.1
Quiescent Current
TEMPERATURE RANGE
Rated
Storage
PACKAGE OPTIONS
Ceramic (D-18)
Chips
–25
–65
4.5
7
+85
+150
–25
–65
4.5
7
+85
+150
–55
–65
4.5
7
+125
+150
mA
°C
°C
AD538AD
AD538ACHIPS
AD538BD
AD538SD
AD538SD/883B
NOTES
1
Over the 100 mV to 10 V operating range total error is the sum of a percent of reading term and an output offset. With this input dynamic range the input offset
contribution to total error is negligible compared to the percent of reading error. Thus, it is specified indirectly as a part of the percent of reading error.
2
The most accurate representation of total error with low level inputs is the summation of a percent of reading term, an output offset and an input offset multiplied by
the incremental gain (V
Y
+ V
Z
) V
X
.
3
When using supplies below
±
13 V, the 10 V reference pin
must
be connected to the 2 V pin in order for the AD538 to operate correctly.
Specifications subject to change without notice.
Specifications shown in
boldface
are tested on all production units at final electrical test. Results from those tests are used to calculate outgoing quality levels. All min
and max specifications are guaranteed, although only those shown in boldface are tested on all production units.
–2–
REV. C
AD [ ANALOG DEVICES ]
