AD737AQ Analog Devices Inc, AD737AQ Datasheet - Page 16

• Manufacturer Part Number: AD737AQ
• Description: IC AC RMS TO DC CONV 5V 8-CDIP
• Manufacturer: Analog Devices Inc

Specifications of AD737AQ

• Rohs Status: RoHS non-compliant
• Current - Supply: 170mA
• Voltage - Supply: ±5.0V
• Mounting Type: Through Hole
• Package / Case: 8-CDIP (0.300", 7.62mm)
• For Use With: AD737-EVALZ - BOARD EVALUATION FOR AD737

AD737
V
IN
JUST 40µA IN THIS MODE
0.01µF
1PRV
900kΩ
MODE. AD737 DRAWS
90kΩ
10kΩ
9MΩ
INPU
NC = NO CONNECT
SWITCH CLOSED
POWER-DOWN
T
ACTIVATES
0.47µF
200mV
2V
20V
200V
C1
INPUT SCALE FACTOR ADJ
1µF
69.8kΩ
1N4148
1N4148
47kΩ
1%
R1
1W
+
Figure 29. Battery-Powered Operation for 200 mV Maximum RMS Full-Scale Input
0.01µF
5kΩ
R2
C2
POWER
POWER
DOWN
V
DOWN
IN
C
C
–V
–V
V
10µF
C
S
C
IN
1
2
3
4
1
2
3
4
C
1
2
3
S
4
C
+
POWER
DOWN
–V
C
V
8kΩ
8kΩ
IN
C
S
SECTION
SECTION
BIAS
BIAS
AMPLIFIER
AMPLIFIER
AD737
Figure 30. External Scale Factor Trim
33µF
INPUT
INPUT
C
Figure 28. 3½ Digit DVM Circuit
AV
+
OUTPUT
Rev. H | Page 16 of 24
COM
FULL-WAVE
FULL-WAVE
RECTIFIER
RECTIFIER
+V
CORE
CORE
C
10µF
+
33µF
RMS
RMS
C
C
AV
+
AV
S
C
+
8
7
6
5
1µF
AD737
AD737
NC
5V
OUTPUT ZERO
100Ω
78.7kΩ
ADJUST
R3
8kΩ
8kΩ
COM
OUTPUT
C
8
7
6
5
COM
8
7
OUTPUT
6
C
5
0.01µF
+V
5kΩ
R4
2.2µF
AV
AV
SCALE FACTOR
+V
1µF
S
C5
C3
C4
AD589
S
+
ADJUST
200Ω
+V
1.23V
+
33µF
10µF
C
F
2
3
AD8541AR
100kΩ
100kΩ
+
1MΩ
200kΩ
0.1µF
20kΩ
50kΩ
80.6kΩ
1
4
R7
R8
0.47µF
V
OUT
R5
C
F
2.5V
7
5
5V
5V
6
REF HIGH
0.01µF
REF LOW
COMMON
LOW
HIGH
3
TYPE CONVERTER
1
ANALOG
/
2
DIGIT ICL7136
+V
–V
S
S
OUTPUT
+
9V