参数资料
型号: AD737-EVALZ
厂商: Analog Devices Inc
文件页数: 16/24页
文件大小: 0K
描述: BOARD EVALUATION FOR AD737
标准包装: 1
主要目的: 接口,RMS 到 DC 转换器
已用 IC / 零件: AD737
已供物品:
相关产品: AD737JRZ-RL-ND - IC CONV TRUE RMS-DC LP 8SOIC
AD737ARZ-ND - IC TRUE RMS/DC CONV LP 8SOIC
AD737ANZ-ND - IC TRUE RMS/DC CONV LP 8-DIP
AD737JRZ-5-ND - IC TRUE RMS/DC CONV LP 8-SOIC
AD737JRZ-R7-ND - IC TRUE RMS/DC CONV LP 8-SOIC
AD737JRZ-5-R7-ND - IC TRUE RMS/DC CONV LP 8-SOIC
AD737JRZ-5-RL-ND - IC TRUE RMS/DC CONV LP 8-SOIC
AD737JRZ-ND - IC TRUE RMS/DC CONV LP 8-SOIC
AD737JNZ-ND - IC TRUE RMS/DC CONV LP 8-DIP
AD737KR-REEL7-ND - IC AC RMS TO DC CONV 5V 8-SOIC
更多...
AD737
Data Sheet
SWITCH CLOSED
ACTIVATES
POWER-DOWN
C C
10μF
+
1μF
20k?
9M?
47k?
V IN
MODE. AD737 DRAWS
JUST 40μA IN THIS MODE
1PRV
0.01μF
200mV
1N4148
2V
900k?
+
C C
1
V IN
2
8 k?
INPUT
AD737
FULL-WAVE
RECTIFIER
8k?
AD589
1.23V
COM
8
+V S
7 +V
200k?
50k?
+V S
3 1 / 2 DIGIT ICL7136
TYPE CONVERTER
REF HIGH
REF LOW
COMMON
20V
1W
AMPLIFIER
90k?
10k?
200V
1N4148
1μF
+
3
POWER
DOWN
–V S
4
BIAS
SECTION
RMS
CORE
OUTPUT
6
C AV
5
+
33μF
1 M ?
0.1μF
LOW
ANALOG
HIGH
–V S
+
9V
Figure 27. 3? Digit DVM Circuit
INPUT SCALE FACTOR ADJ
INPUT
C1
0.47μF
R1 R2
69.8k? 5k?
1%
1
C C
COM 8 NC
C F
0.47μF
2
V IN
+V S 7
5V
R3
78.7k?
R4
5k?
R5
80.6k?
OUTPUT 6
C2
0.01μF
3
AD737
POWER
DOWN
OUTPUT ZERO
ADJUST
2
1
7
AD8541AR
5V
0.01μF
6
OUTPUT
3
5
4
–V S
C AV 5
C3
4
0.01μF
+
5V
C AV
33μF
C4
2.2μF
C5 +
1μF
R7
100k?
R8
100k?
2.5V
NC = NO CONNECT
Figure 28. Battery-Powered Operation for 200 mV Maximum RMS Full-Scale Input
C C
10μF
+
1 00 ?
SCALE FACTOR
C C
1
8 k?
AD737
COM
8
ADJUST
200?
FULL-WAVE
V IN
2
INPUT
RECTIFIER
8k?
7
+V S
C F
10μF
+
AMPLIFIER
OUTPUT
POWER
DOWN
3
BIAS
SECTION
6
V OUT
–V S
C AV
4
RMS
CORE
5
+
C AV
33μF
Figure 29. External Scale Factor Trim
Rev. I | Page 16 of 24
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