NJU9214FG1 Просмотр технического описания (PDF) - Japan Radio Corporation
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NJU9214FG1 Datasheet PDF : 28 Pages
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NJU9214
(6) Reference voltage
The resolution of NJU9214 is 25ppm ( 1/40000 ), and high precision is required for the reference power supply.
The reference voltage requires a high precision and a temperature compensated type like as a band-gap reference.
Reference voltages, VREF1 and VREF2 are about 0.2V, and VREF3 is about 1.4V.
(7) Example of Display Layout
(7-1) Connection of Common Line
BATT
REL
AC
COM4
DC
COM3
COM2
COM1
AUTO
0
HOLD
10
MAX
20
MIN
30
MEN
APF
°C °F
µmVA
n F rpm
M k Ω Hz
RS232C
40
(7-2) Connection of Segment Line
BATT
REL
AC
DC
AUTO
0
HOLD MAX
10
20
MIN
30
MEN APF
°C °F
µmV A
n F rpm
M k Ω Hz
RS232C
40
(7-3) Segment Assignment
COM1
COM2
COM3
COM4
COM1
COM2
COM3
COM4
COM1
COM2
COM3
COM4
SEG1
BPN
BP0
BP-
DC
SEG11
BP18
BP17
P3
HOLD
SEG21
BP35
d0
g0
a0
SEG2
BP2
BP1
-
BATT
SEG12
BP20
BP19
e2
f2
SEG22
BP37
BP36
c0
b0
SEG3
BP4
BP3
AUTO
AC
SEG13
BP21
d2
g2
a2
SEG23
BP39
BP38
µ
MEM
SEG4
BP6
BP5
e4
f4
SEG14
BP23
BP22
c2
b2
SEG24
BP40
n
m
APF
SEG5
BP7
d4
g4
a4
SEG15
BP25
BP24
P2
MAX
SEG25
M
F
V
SEG6
BP9
BP8
c4
b4
SEG16
BP27
BP26
e1
f1
SEG26
k
rpm
°F
°C
SEG7
PB11
BP10
P4
REL
SEG17
BP28
d1
g1
a1
SEG27
Hz
Ω
A
SEG8
PB13
BP12
e3
f3
SEG18
BP30
BP29
c1
b1
SEG28
RC232C
/
/
/
SEG9
BP14
d3
g3
a3
SEG19
BP32
BP31
P1
MIN
/
/
/
/
/
SEG10
BP16
BP15
c3
b3
SEG20
BP34
BP33
e0
f0
/
/
/
/
/
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