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LT1620IGN Scheda tecnica(PDF) 9 Page - Linear Technology

Il numero della parte LT1620IGN
Spiegazioni elettronici  Rail-to-Rail Current Sense Amplifier
PDF  12 Pages
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Produttore elettronici  LINER [Linear Technology]
Homepage  http://www.linear.com
Logo LINER - Linear Technology

LT1620IGN Scheda tecnica(HTML) 9 Page - Linear Technology

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9
LT1620/LT1621
APPLICATIONS INFORMATION
Figure 5a. Typical Setpoint Voltage (VPROG) Changes Slightly
Depending Upon the Amount of Current Sinked by the IOUT Pin
IN+ – IN– (VID) INPUT (mV)
0
20
10
0
–10
–20
–30
–40
60
100
LT1620/21 • F05b
20
40
80
120
140
VCC = 5V
VCM = 16.8V
IOUT = 130µA
Figure 5b. Typical Setpoint Voltage (VPROG) Changes Slightly
Depending Upon the Programmed Differential Input Voltage (VID)
IOUT SINK CURRENT (µA)
0
150
250
LT1620/21 • F05a
50
100
200
40
30
20
10
0
–10
–20
–30
–40
VCC = 5V
VID = 80mV
VCM = 16.8V
Figure 5e. Typical Setpoint Voltages for VPROG and VPROG2
Change Slightly Depending Upon the Supply Voltage (VCC)
VCC (V)
4.50
0
5
5.50
LT1620/21 • F05e
–5
–10
4.75
5.00
5.25
10
VPROG
VPROG2
VID = 80mV
VCM = 16.8mV
IOUT = 130µA
IN+ – IN– (VID) INPUT (mV)
0
40
20
0
–20
–40
–60
–80
60
100
LT1620/21 • F05c
20
40
80
120
140
VCC = 5V
VCM = 16.8V
IOUT = 130µA
Figure 5c. Typical Comparator Threshold Voltage (VPROG2)
Changes Slightly Depending Upon the Programmed Differential
Input Voltage (VID)
Figure 5d. Sense Amplifier Input Offset Tolerence Degrades for
Input Common Mode Voltage (VCM) Below (VCC – 0.5V). This
Affects the SENSE, AVG and AVG2 Amplifier Outputs
IN+, IN– COMMON MODE VOLTAGE (VCM) (V)
0
±8
±10
±12
35
LT1620/21 • F05d
±6
±4
12
436
±2
0
±14
VCC = 5V
VID = 80mV
IOUT = 130µA



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