NJU9214FG1 New Japan Radio Co., Ltd., NJU9214FG1 Datasheet - Page 12

• Manufacturer Part Number: NJU9214FG1
• Description: 4 3/4 DIGIT Single Chip Digital Multimeter LSI
• Manufacturer: New Japan Radio Co., Ltd.

NJU9214
Sw4 and SW8 is used
into the rectifier circuit
block shown
Example of application
circuit.
(3) Example of the Latching Relay Driver Circuit
in
RD1 to RD4 are normally " H ". ( Active " L " )
DCV, ACV,
DCmA, ACmA,
FRQ, rpm, ADP
the
GND
SW1
SW2
SW8
SW7
SW3
SW5
SW4
,
SW Changing coil of latching relay
,
RESET
SET
, CAP,
COM
10A
VDDA
VSSA
VSSD
SW2
DCmA,
ACmA
SW7
VDDD
SW7
ACV,ACmA,
FRQ,rpm
others
Rectifier Circuit
0.022uF
SW1
Ω,CAP
Block
,
1k
SW3
,
SW5
0.1uF
14
RMS-DC Converter
Power source SW
others
DC400mV,ADP
PTC 500
VSSD
100k
100
1k
10k
1M
100k
100k
10M
VDDD
74HC138
33k
33k
VDDD
ACOUT
RMSIN
RD1 RD2 RD3 RD4
SGND2
OVX
OVH
VR7
VR6
VR5
VR3
VR2
VI
SGND1
AGND
ADP
VR4
IVSH
IVSL
74HC138
VDDD