AD536A
ABSOLUTE MAXIMUM RATINGS1
STANDARD CONNECTION
Supply Voltage
The AD536A is simple to connect for the majority of high accu-
racy rms measurements, requiring only an external capacitor to
set the averaging time constant. The standard connection is
shown in Figure 1. In this configuration, the AD536A will mea-
sure the rms of the ac and dc level present at the input, but will
show an error for low frequency inputs as a function of the filter
capacitor, CAV, as shown in Figure 5. Thus, if a 4 µF capacitor
is used, the additional average error at 10 Hz will be 0.1%, at
3 Hz it will be 1%. The accuracy at higher frequencies will be
according to specification. If it is desired to reject the dc input, a
capacitor is added in series with the input, as shown in Figure 3,
the capacitor must be nonpolar. If the AD536A is driven with
power supplies with a considerable amount of high frequency
ripple, it is advisable to bypass both supplies to ground with
0.1 µF ceramic discs as near the device as possible.
Dual Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 V
Single Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +36 V
Internal Power Dissipation2 . . . . . . . . . . . . . . . . . . . . 500 mW
Maximum Input Voltage . . . . . . . . . . . . . . . . . . . . 25 V Peak
Buffer Maximum Input Voltage . . . . . . . . . . . . . . . . . . . . . VS
Maximum Input Voltage . . . . . . . . . . . . . . . . . . . . 25 V Peak
Storage Temperature Range . . . . . . . . . . . . –55°C to +150°C
Operating Temperature Range
AD536AJ/K . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to +70°C
AD536AS . . . . . . . . . . . . . . . . . . . . . . . . –55°C to +125°C
Lead Temperature Range
(Soldering 60 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . +300°C
ESD Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1000 V
NOTES
1Stresses above those listed under Absolute Maximum Ratings may cause perma-
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.
210-Pin Header: θJA = 150°C/W; 20-Leadless LCC: θJA = 95°C/W; 14-Lead Size
Brazed Ceramic DIP: θJA = 95°C/W.
C
AV
ABSOLUTE
VALUE
+V
V
14
13
12
11
10
9
1
2
3
4
5
6
7
S
IN
AD536A
SQUARER
DIVIDER
–V
S
CHIP DIMENSIONS AND PAD LAYOUT
Dimensions shown in inches and (mm).
CURRENT
MIRROR
V
OUT
25k⍀
BUF
25k⍀
8
25k⍀
25k⍀
AD536A
V
CURRENT
MIRROR
OUT
BUF
SQUARER
DIVIDER
+V
S
ABSOLUTE
VALUE
V
IN
C
AV
–V
S
ORDERING GUIDE
V
C
+V
S
IN
AV
Temperature
Range
Package
Description
Package
Option
Model
3
2
1
20 19
AD536AJD
AD536AKD
AD536AJH
AD536AKH
AD536AJQ
AD536AKQ
AD536ASD
AD536ASD/883B
AD536ASE/883B
AD536ASH
AD536ASH/883B
AD536AJCHIPS
AD536AKH/+
AD536ASCHIPS
5962-89805012A
5962-8980501CA
5962-8980501IA
0°C to +70°C
Side Brazed Ceramic DIP D-14
Side Brazed Ceramic DIP D-14
ABSOLUTE
VALUE
4
5
6
7
8
18
17
16
15
14
–V
0°C to +70°C
S
AD536A
0°C to +70°C
Header
Header
Cerdip
Cerdip
H-10A
H-10A
Q-14
SQUARER
DIVIDER
0°C to +70°C
0°C to +70°C
25k⍀
0°C to +70°C
Q-14
CURRENT
MIRROR
–55°C to +125°C
–55°C to +125°C
–55°C to +125°C
–55°C to +125°C
–55°C to +125°C
0°C to +70°C
Side Brazed Ceramic DIP D-14
Side Brazed Ceramic DIP D-14
25k⍀
dB
BUF
9
LCC
E-20A
H-10A
H-10A
10 11 12
13
Header
Header
Die
V
OUT
Figure 1. Standard RMS Connection
0°C to +70°C
Header
Die
LCC
H-10A
E-20A
–55°C to +125°C
–55°C to +125°C
–55°C to +125°C
–55°C to +125°C
Side Brazed Ceramic DIP D-14
Header H-10A
REV. B
–3–
ADI [ ADI ]
