AD536A Analog Devices, AD536A Datasheet - Page 3

• Manufacturer Part Number: AD536A
• Description: Integrated Circuit True RMS-to-DC Converter
• Manufacturer: Analog Devices

ABSOLUTE MAXIMUM RATINGS
Supply Voltage
Internal Power Dissipation
Maximum Input Voltage . . . . . . . . . . . . . . . . . . . . ± 25 V Peak
Buffer Maximum Input Voltage . . . . . . . . . . . . . . . . . . . . . ± V
Maximum Input Voltage . . . . . . . . . . . . . . . . . . . . ± 25 V Peak
Storage Temperature Range . . . . . . . . . . . . –55°C to +150°C
Operating Temperature Range
Lead Temperature Range
ESD Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1000 V
NOTES
1
2
Model
AD536AJD
AD536AKD
AD536AJH
AD536AKH
AD536AJQ
AD536AKQ
AD536ASD
AD536ASD/883B
AD536ASE/883B
AD536ASH
AD536ASH/883B
AD536AJCHIPS
AD536AKH/+
AD536ASCHIPS
5962-89805012A
5962-8980501CA
5962-8980501IA
REV. B
Stresses above those listed under Absolute Maximum Ratings may cause perma-
10-Pin Header: θ
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.
Brazed Ceramic DIP: θ
Dual Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 18 V
Single Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +36 V
AD536AJ/K . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to +70°C
AD536AS . . . . . . . . . . . . . . . . . . . . . . . . –55°C to +125°C
(Soldering 60 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . +300°C
CHIP DIMENSIONS AND PAD LAYOUT
JA
Dimensions shown in inches and (mm).
= 150°C/W; 20-Leadless LCC: θ
Temperature
Range
0°C to +70°C
0°C to +70°C
0°C to +70°C
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
–55°C to +125°C
–55°C to +125°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
–55°C to +125°C
JA
ORDERING GUIDE
= 95°C/W.
2
. . . . . . . . . . . . . . . . . . . . 500 mW
Package
Description
Side Brazed Ceramic DIP D-14
Side Brazed Ceramic DIP D-14
Header
Header
Cerdip
Cerdip
Side Brazed Ceramic DIP D-14
Side Brazed Ceramic DIP D-14
LCC
Header
Header
Die
Header
Die
LCC
Side Brazed Ceramic DIP D-14
Header
1
JA
= 95°C/W; 14-Lead Size
Package
Option
H-10A
H-10A
Q-14
Q-14
E-20A
H-10A
H-10A
H-10A
E-20A
H-10A
S
–3–
STANDARD CONNECTION
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, C
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.
Figure 1. Standard RMS Connection
AV
+V
–V
, as shown in Figure 5. Thus, if a 4 µF capacitor
V
S
S
OUT
V
–V
IN
S
dB
V
OUT
V
C
4
5
6
7
8
IN
AV
C
AV
1
2
3
4
5
6
7
AD536A
AD536A
3
AD536A
9
BUF
CURRENT
25k
MIRROR
SQUARER
BUF
25k
DIVIDER
V
10
ABSOLUTE
2
ABSOLUTE
SQUARER
CURRENT
IN
25k
DIVIDER
MIRROR
VALUE
VALUE
C
–V
11
AV
1
ABSOLUTE
SQUARER
S
DIVIDER
CURRENT
VALUE
MIRROR
+V
12
20
25k
S
25k
25k
BUF
19
13
14
13
12
11
10
9
8
18
17
16
15
14
+V
V
AD536A
S
OUT