LT1620 View Datasheet(PDF) - Linear Technology
Part Name
Description
Manufacturer
LT1620 Datasheet PDF : 12 Pages
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LT1620/LT1621
APPLICATIONS INFORMATION
40
VCC = 5V
30 VID = 80mV
VCM = 16.8V
20
10
0
–10
–20
–30
–40
0
50 100 150 200 250
IOUT SINK CURRENT (µA)
LT1620/21 • F05a
Figure 5a. Typical Setpoint Voltage (VPROG) Changes Slightly
Depending Upon the Amount of Current Sinked by the IOUT Pin
40
VCC = 5V
20
VCM = 16.8V
IOUT = 130µA
0
–20
–40
–60
–80
0
20 40 60 80 100 120 140
IN+ – IN– (VID) INPUT (mV)
LT1620/21 • F05c
Figure 5c. Typical Comparator Threshold Voltage (VPROG2)
Changes Slightly Depending Upon the Programmed Differential
Input Voltage (VID)
20
VCC = 5V
10
VCM = 16.8V
IOUT = 130µA
0
–10
–20
–30
–40
0
20 40 60 80 100 120 140
IN+ – IN– (VID) INPUT (mV)
LT1620/21 • F05b
Figure 5b. Typical Setpoint Voltage (VPROG) Changes Slightly
Depending Upon the Programmed Differential Input Voltage (VID)
±14
VCC = 5V
±12
VID = 80mV
IOUT = 130µA
±10
±8
±6
±4
±2
0
01
2
3
4 5 36
IN+, IN– COMMON MODE VOLTAGE (VCM) (V)
LT1620/21 • F05d
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
10
5
VPROG2
VPROG
0
VID = 80mV
VCM = 16.8mV
IOUT = 130µA
–5
–10
4.50
4.75
5.00
VCC (V)
5.25
5.50
LT1620/21 • F05e
Figure 5e. Typical Setpoint Voltages for VPROG and VPROG2
Change Slightly Depending Upon the Supply Voltage (VCC)
9
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