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PDF AM462 Data sheet ( Hoja de datos )
| Número de pieza | AM462 | |
| Descripción | Industrial V/I Converter and Protector IC | |
| Fabricantes | Analog Microelectronics | |
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Industrial V/I Converter and Protector IC
AM462
PRINCIPLE FUNCTION
Conversion of input voltage referenced to ground to output current
Integrated protection for IC and external components
Integrated, adjustable current/voltage sources for external components
VCC = 6...35V
Single-ended
input voltage
0...VCC-5V
AM462
IOUT = e.g. 0/4...20mA
VREF = 5/10V ICC = up to 10mA
TYPICAL APPLICATIONS
• Adjustable voltage-to-current (V/I) converter
• Adjustable voltage and current source (supply unit)
• Voltage regulator with additional functions
• Industrial protector and output IC for microprocessors (the Frame ASIC concept [1])
• Peripheral processor IC
• For examples of typical applications see Example Applications
analog microelectronics
Analog Microelectronics GmbH
An der Fahrt 13, D – 55124 Mainz
Internet: http://www.analogmicro.de
Phone: +49 (0)6131/91 073 - 0
Fax: +49 (0)6131/91 073 – 30
Email: info@analogmicro.de
December2006
1/20
Rev. 2.4
Datasheet pdf - http://www.DataSheet4U.net/
1 page  
www.DataSheet.co.kr
Industrial V/I Converter and Protector IC
AM462
Parameter
Symbol
Conditions
Operational Amplifier Gain Stage (OP1) (cont.)
VOS vs. Temperature
Input Bias Current
IB vs. Temperature
Output Voltage Limitation
Output Voltage Range
Load Capacitance
dVOS/dT
IB
dIB/dT
VLIM
VOUTAD
VOUTAD
CL
VCC < 10V
VCC ≥ 10V
V/I Converter
Internal Gain
Trim Range
Voltage Range at R0 FS
Offset Voltage
VOS vs. Temperature
Input Resistance
RIN vs. Temperature
Output Offset Current
IOUTOS vs. Temperature
Output Offset Current
IOUTOS vs. Temperature
Output Control Current
IOUTC vs. Temperature
Output Voltage Range
Output Current Range FS
Output Resistance
Load Capacitance
GVI
VR0FS
VOS
dVOS/dT
RIN
dRIN/dT
IOUTOS
dIOUTOS/dT
IOUTOS
dIOUTOS/dT
IOUTC
dIOUTC/dT
VOUT
VOUT
IOUTFS
ROUT
CL
Adjustable by R0
F ≥ 100
F ≥ 100
3-wire operation
3-wire operation
2-wire operation
2-wire operation
2-wire operation, VR0/100mV
2-wire operation
VOUT = RL IOUT, VCC < 18V
VOUT = RL IOUT, VCC ≥ 18V
IOUT = VR0/R0, 3-wire operation
SET Stage
Internal Gain
Input Voltage
Offset Voltage
VOS vs. Temperature
Input Bias Current
IB vs. Temperature
GSET
VSET
VOS
dVOS/dT
IB
dIB/dT
Protection Functions
Voltage Limitation at R0
Protection against reverse polarity
VLIMR0
Current in the event of reverse polarity
VINDAI = 0, VR0 = GSET VSET
Ground vs. VS vs. VOUT
Ground vs. VS vs. IOUT
Ground = 35V, VS = IOUT = 0
System Parameters
Nonlinearity
Ideal input
* In 2-wire operation a maximum current of IOUTmin – ICC is valid
Min.
Typ. Max.
Unit
±3 ±7 µV/°C
10 25 nA
7 20 pA/°C
VREF
V
0
VCC – 5
V
0
VREF
V
250 pF
0,12 0.125 0,13
0.75 1.00 1.25
350 750 mV
±2 ±4 mV
±7 ±14 µV/°C
120 160
kΩ
0.2 0.3
kΩ/°C
–25 –35
µA
16 26 nA/°C
9.5 14 µA
6 8 nA/°C
6 8 µA
–10 –15 nA/°C
0
VCC – 6
V
0 12 V
20 mA
0.5 1.0
MΩ
0 500 nF
0.5
0 1.15 V
±0.5 ±1.5
mV
±1.6 ±5 µV/°C
8 20 nA
7 18 pA/°C
580 635 690 mV
35 V
35 V
4.5 mA
0.05 0.15 %FS
analog microelectronics
Analog Microelectronics GmbH
An der Fahrt 13, D – 55124 Mainz
Internet: http://www.analogmicro.de
Phone: +49 (0)6131/91 073 - 0
Fax: +49 (0)6131/91 073 – 30
Email: info@analogmicro.de
December2006
5/20
Rev. 2.4
Datasheet pdf - http://www.DataSheet4U.net/
5 Page 
www.DataSheet.co.kr
Industrial V/I Converter and Protector IC
AM462
Using OP2 as a voltage reference
In addition to the integrated voltage reference OP2 can also be used to supply voltage to external
components, such as A/D converters and microprocessors, for example. Lower voltages can be
generated (e.g. 3.3V) which with the increasing miniaturization of devices and need for ever lower
levels of power dissipation in digital components is today of growing importance.
VCVREF
µP R6
R7
OP2 connected as
voltage reference
AM462
2
VBG
OP2
1
Figure 6: Using OP2 as a voltage reference
The additional operational amplifier OP2 can easily be connected up as a voltage reference. Using
the circuit in Figure 6 the following applies:
V CVREF
= V BG
1 +
R6
R7
=
1.27 V
1 +
R6
R7
(9)
Example : OP2 as voltage reference
A voltage of VCVREF = 3.3V is to be set. Using Equation 9 the following ratio is calculated for
external resistors R6 and R7:
R6
R7
=
VCVREF
V BG
− 1 ≈ 2,6 − 1 = 1,6
The following example values are produced for the resistors:
R7 = 10kΩ
R6 = 16kΩ
analog microelectronics
Analog Microelectronics GmbH
An der Fahrt 13, D – 55124 Mainz
Internet: http://www.analogmicro.de
Phone: +49 (0)6131/91 073 - 0
Fax: +49 (0)6131/91 073 – 30
Email: info@analogmicro.de
December2006
11/20
Rev. 2.4
Datasheet pdf - http://www.DataSheet4U.net/
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet AM462.PDF ] | |
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