m62301sp Mitsumi Electronics, Corp., m62301sp Datasheet - Page 7

• Manufacturer Part Number: m62301sp
• Description: 10~12-bit 4ch Integrating A-d Converter
• Manufacturer: Mitsumi Electronics, Corp.

TO MICROCOMPUTER
CONTROL PIN
2.4-channel 12-bit A-D converter system
TO MICROCOMPUTER
5V POWER SUPPLY
Separate power supplies to analog section and digital section,
analog input voltage range mode wider up to V
reference voltage for integration.
Recommended operational settings according to clock frequency,resolution,and time required for
discharge(decoder mode 1)
Because separate power supplies are provided for the
analog are digital sections,the M62301 has two supply
voltage Vcc and V
range V
more than the difference between Vcc-2.5V as well as
V
application is 0V to 5V.
Counter clock
TO COUNTER
DD
Note 1.Discharge time Tdi=(C
,therefore,the analog input voltage range in this
16MHz
TO RESET
8MHz
IA
The values in this table apply when V
.The upper limit of the range is required to be no
C
6800pF
I
DD
,enabling a wide analog input voltage
Resolution
C
680pF
10-bit
11-bit
12-bit
10-bit
12-bit
11-bit
INT
10k 10k
50µA
I
X
10
2
3
4
5
6
7
8
9
1
V
IA
1mA
max+0.49 )
Change current
I
100
100
100
100
100
100
I
50
50
50
50
50
50
(µA)
DD
IA
V
max is 5V.
,external
A1
A3
A4
A2
DD
20
19
18
17
16
15
14
13
12
11
10~12-BIT 4CH INTEGRATING A-D CONVERTER
MITSUBISHI
R
ELECTRIC
Resistance to determine
constant current R
I
C
2.5V
REF
TO MICROCOMPUTER 5V POWER SUPPLY
24k
I
I
=50µA
An A-D converter system with resolution of approximately
12 bits can be formed.
When the counter clock frequency is 8MHz,resolution is:
8V
4700pF
12
24
12
24
12
24
12
24
12
24
12
24
INPUT ANALOG
VOLTAGE
6800pF X
I
(k )
MITSUBISHI<Dig.Ana.INTERFACE>
M62301SP,FP
8M
1
(5 + 0.13)
capacitance C
50µA
C
Integration
C
Use CI that leaks as slight current
as possible.To prevent leak to the
circuit board,we recommend providing
girdling 7 , 9
12000pF
INT
REF
1400pF
2800pF
2800pF
5600pF
5600pF
1400pF
1400pF
2800pF
2800pF
5600pF
700pF
:We suggest that this capacitance
:To stabilize reference voltage,
be connected to prevent
malfunction due to noise.
be sure to connect
capacitance of approximately
4700pF.
.
=
. 2
I
12
(
Discharge time
7
Tdi(µs)
15.4
15.4
30.7
30.7
65.9
15.4
15.4
30.7
7.7
3.9
7.7
7.7
/ 9 )