am457 AME, Inc., am457 Datasheet - Page 5

• Manufacturer Part Number: am457
• Description: Precision Amplifier For Bridge Circuits - Analog Microelectronics
• Manufacturer: AME, Inc.

Precision amplifier for bridge circuits
Table 1: Specifications
Currents flowing into the IC are negative. Positive input of the o
V
CIRCUIT
Table 2: Circuit Components
analog microelectronics
Analog Microelectronics GmbH
An der Fahrt 13, D – 55124 Mainz
Internet: www.analogmicro.de
Parameter
AMP Output Capacitor
Compensation Capacitor
DIAG Output Capacitor (optional)
OP Output Capacitor (optional)
Stabilization Capacitor (optional)
EMV Protection Capacitor (optional)
Load Resistor
CM
Error Monitoring (Diagnosis)
Output Voltage on Error (high)
Output Voltage without Error (low)
Output Current on Error
Output Current without Error
Threshold for Temperature Error Monitor-
ing
Threshold for Output Current (AMP) Error
Monitoring
Threshold for Supply Voltage Error
Monitoring
Threshold for High Input Voltage (AMP)
Error Monitoring
Threshold for Low Input Voltage (AMP)
Error Monitoring
Operational Amplifier (OP)
Offset Voltage
V
V
Input Bias Current
I
Input Resistance
Input Capacitance
Common Mode Input Range
Open Loop Gain
Output Voltage Range
Output Source Current
Output Load Capacitance
Gain Bandwidth Product
Slew Rate
B
OS
OS
vs. Temperature
Input Common Mode Voltage
vs. Temperature
vs. Temperature
V
V
I
I
T
I
V
V
V
V
dV
dV
I
dI
R
C
CMIR
G
G
V
I
C
GBW
SR
C
C
C
C
C
C
R
ERR
NOERR
IA,ERR
B
OUT
ERR
DIAG
DIAG
CC,ERR
IN,high,ERR
IN,low,ERR
OS
IN
OUT
Symbol
L
IN
0
0.2mA
1
1
2
3
4
5
6
B
OS
OS
/dT
/dT
/dT
Phone:
Fax:
Email:
Recommendation: Ceramic capacitor
V
V
With regard to the sensing element
T
T
T
V
I
I
PNP Open Collector Output
G
G
0ut
0ut
amb
amb
amb
DIAG
DIAG
CM
GAIN
GAIN
=0.1mA
=2mA
= -45…105°C
= 105…125°C
= -45…125°C
/ I
= 2.5V
= 2.5V
= 10; C
= 100; C
B,typ
+49 (0)6131/91 073 – 30
+49 (0)6131/91 073 – 0
[e-mail]
(V
perational amplifier (fixed internally): 0.1˜V
Conditions
CM
1
1
= 1nF; R
= 0.5V)
= 1nF; R
L
L
= 1.25k:
= 25k:
VCC – 1.8
Min.
105
250
1.5
3.8
0.4
0.9
0.2
90
75
-6
20
0
0
1
1
1
GND+
VCC – 0.2
Typ.
6.25
-3.5
±10
100
110
100
100
470
3.5
0.5
1.4
0.7
3.3
±4
80
30
90
CC
0.2
VCC – 0.8
VCC – 0.2
±320
Max.
-1.5
143
800
±40
300
400
4.3
0.9
±8
6
1
2
5
5
5
AM457
May 2005
Rev. 2.2
µV/°C
pA/°C
MHz
V/µs
M:
mV
mA
Unit
µA
µA
µA
µV
nA
dB
dB
°C
pF
nF
k:
V
V
V
V
V
V
V
nF
pF
nF
nF
nF
pF
5/10