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AD538 Datasheet(PDF) 2 Page - Analog Devices

Part # AD538
Description  Real-Time Analog Computational Unit ACU
PDF  11 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD538 Datasheet(HTML) 2 Page - Analog Devices

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



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