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PDF M62301FP Data sheet ( Hoja de datos )
| Número de pieza | M62301FP | |
| Descripción | 10~12-BIT 4CH INTEGRATING A-D CONVERTER | |
| Fabricantes | Mitsubishi | |
| Logotipo |  |
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MITSUBISHI<Dig.Ana.INTERFACE>
M62301SP,FP
10~12-BIT 4CH INTEGRATING A-D CONVERTER
DESCRIPTION
M62301 semiconductor integrated circuit forms an integrating
A-D converter,being connected to a microcomputer unit.By
using selection signals and counter clock signals from the
unit,a 10~12-bit A-D converter can be created at a low cost.
The integration time and resolution can be set at the user‘s
option by changing external parameters.In addition,the built-in
circuit offset,delay time and temperature fluctuation are
adjustable,enabling a wide range of applications.
M62301 has a 3 input decoder circuit,high-precision
reference voltage(1.22V)generator,current supply and
comparator for integration,and voltage-monitoring reset circuit
for a 5V power supply.It is also equipped with girdling to
prevent current leak from integration capacitor.
FEATURES
•Separate power supplies for analog section and digital section.
•Low power dissipation.....................................2mA(typ)
(1mA for A-D conversion and the other 1mA for reset)
•Linear error......................................................±0.02%(typ)
•Conversion time...............................................526µs/ch(typ)
•Built-in system reset.........................................4.45V(typ)
PIN CONFIGURATION (TOP VIEW)
Vcc FOR RESET 1
C0 2
C1 3
C2 4
INT 5
RESET 6
GIRDLING 1 7
INTEGRATING
CAPACITOR
8
GIRDLING 2 9
ANALOG GND 10
20 DIGITAL GND
19 A1
18 A2
17 A3
16 A4
15 REFERENCE INPUT
14 DIGITAL VDD
13
REFERENCE
VOLTAGE
12
CONSTANT CURRENT
CONTROL
11 ANALOG Vcc
Outline 20P4B(SP)
20P2N-A(FP)
APPLICATION
High-precision control systems such as temperature control
and speed control
BLOCK DIAGRAM
A1 19
A2 18
A3 17
A4 16
REFERENCE 15
INPUT
A1
A2
A3
A4
VREF
GND
REFERENCE 13
VOLTAGE
VREF
1.22V
CONSTANT ANALOG
DIGITAL
CURRENT Vcc ANALOG GND DIGITAL
CONTROL
GND
VDD
12 11 10 20 14
0.49V
+
-
+
-
0.36V
DISCHARGE
DECODER
150µs
+ DELAY
- CIRCUIT
5 INT
1 Vcc FOR RESET
6 RESET
7 8 9 234
INTEGRATING
CAPACITOR
C0 C1 C2
GIRDLING 1 GIRDLING 2
MITSUBISHI
ELECTRIC
( 1 /9)
1 page  
MITSUBISHI<Dig.Ana.INTERFACE>
M62301SP,FP
10~12-BIT 4CH INTEGRATING A-D CONVERTER
(3)Constant current control
Integrating current II can be obtained based on the reference
voltage(1.22V)by the built-in high-precision generator and
resistance RI.
II= 1.22 (A)........................(1)
RI
Integration time TI can be calculated as follows;
CI
TI=(VIN+0.49)
II
.............(2)
(However,parameters such as built-in comparator offset
voltage,analog switch offset,voltage leak current and delay
time are not counted.)
VREF
13
1.22V
12
RI
II
8
CI
4.45V
RESET SUPPLY VOLTAGE
VRE
0.8V
50mA
t
RESET OUTPUT
OUTPUT
UNSETTLED
TDE
TDE
t
When voltage applied to pin VRE becomes less than
4.45V,the RESET output status becomes "L".If voltage
increases over 4.50V,the RESET status becomes "H"
within 150µsec.
MITSUBISHI
ELECTRIC
( 5 /9)
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet M62301FP.PDF ] | |
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