AD538–SPECIFICATIONS (VS = ؎15 V, TA = +25؇C unless otherwise noted)
Parameters
MULTIPLIER DIVIDER
PERFORMANCE
Nominal Transfer
Function
Conditions
AD538AD
Min Typ Max
VZ m
10 V ≥ VX, VY, VZ ≥ 0 VO = VY VX
AD538BD
Min Typ
Max
AD538SD
Min Typ Max
Units
VZ m
VO = Vy VX
VZ m
VO = VY VX
Total Error Terms
100:1 Input Range1
Wide Dynamic Range2
Exponent (m) Range
OUTPUT
CHARACTERISTICS
Offset Voltage
Output Voltage Swing
Output Current
400 µA ≥ IX, IY, IZ ≥ 0
100 mV ≤ VX ≤ 10 V
100 mV ≤ VY ≤ 10 V
100 mV ≤ VZ ≤ 10 V
VZ ≤ 10 VX, m = 1.0
TA = TMIN to TMAX
VO
=
25
kΩ
×
IY
IZ
IX
m
±0.5 ؎1
±200 ؎500
±1
± 450
؎2
؎750
10 mV ≤ VX ≤ 10 V
1 mV ≤ VY ≤ 10 V
0 mV ≤ VZ ≤ 10 V
VZ ≤ 10 VX, m = 1.0
TA = TMIN to TMAX
±1
± 200
± 100
±1
± 450
± 450
؎2
؎500
؎250
؎3
؎750
؎750
TA = TMIN to TMAX
0.2
5
VY = 0, VC = –600 mV
TA = TMIN to TMAX
RL = 2 kΩ
–11
5
± 200
± 450
10
؎500
؎750
+11
VO
=
25 kΩ
×
IY
IZ m
IX
± 0.25 ؎0.5
± 100
؎250
VO
=
25 kΩ
×
IY
IZ m
IX
± 0.5 ؎1
± 200 ؎500
% of Reading +
µV
± 0.5
± 350
؎1
؎500
± 1.25 ؎2.5 % of Reading +
± 750 ؎1000 µV
± 0.5
± 100
± 750
؎1
؎250
؎150
±1
± 200
± 200
؎2
؎500
؎250
% of Reading +
µV +
µV × (VY + VZ)/VX
±1
± 350
± 350
؎2
؎500
؎500
±2
± 750
± 750
؎4
؎1000
؎1000
% of Reading +
µV +
µV × (VY + VZ)/VX
0.2
5
0.2
5
± 100
؎250
± 200 ؎500 µV
± 350
؎500
± 750 ؎1000 µV
–11
+11
–11
+11
V
5
10
5
10
mA
FREQUENCY RESPONSE
Slew Rate
Small Signal Bandwidth
100 mV ≤ 10 VY, VZ,
VX ≤ 10 V
VOLTAGE REFERENCE
Accuracy
Additional Error
Output Current
Power Supply Rejection
+2 V = VREF
+10 V = VREF
VREF = 10 V or 2 V
TA = TMIN or TMAX
VREF = 10 V to 2 V
±4.5 V ≤ VS ≤ ± 18 V
±13 V ≤ VS ≤ ±18 V
POWER SUPPLY
Rated
Operating Range3
PSRR
Quiescent Current
RL = 2 kΩ
±4.5 V < VS < ±18 V
VX = VY = VZ = 1 V
VOUT = 1 V
TEMPERATURE RANGE
Rated
Storage
PACKAGE OPTIONS
Ceramic (D-18)
1.4
400
± 25
± 20
1
2.5
300
200
± 15
؎4.5
0.5
4.5
–25
–65
AD538AD
؎50
؎30
600
500
؎18
0.1
7
+85
+150
Chips
AD538ACHIPS
1.4
1.4
V/µs
400
400
kHz
± 15
± 20
1
2.5
300
200
± 15
؎4.5
0.05
؎25
؎30
1
600
500
± 25
؎50
mV
± 30
؎50
mV
2.5
mA
300
600
µV/V
200
500
µV/V
± 15
V
؎18
؎4.5
؎18
V
0.1
0.5
0.1
%/V
4.5
7
4.5
7
mA
–25
+85
–55
+125 °C
–65
+150 –65
+150 °C
AD538BD
AD538SD
AD538SD/883B
NOTES
1Over 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.
2The 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 (VY + VZ) VX.
3When 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