LT1620 Linear Technology, LT1620 Datasheet - Page 9

• Manufacturer Part Number: LT1620
• Description: Rail-to-Rail Current Sense Amplifier
• Manufacturer: Linear Technology

Figure 5c. Typical Comparator Threshold Voltage (V
Changes Slightly Depending Upon the Programmed Differential
Input Voltage (V
APPLICATIONS
Figure 5a. Typical Setpoint Voltage (V
Depending Upon the Amount of Current Sinked by the I
–20
–40
–60
–80
–10
–20
–30
–40
40
20
40
30
20
10
0
0
0
ID
0
)
V
V
I
OUT
V
V
V
CC
CM
CC
ID
CM
20
= 5V
= 80mV
= 16.8V
= 130 A
= 5V
U
= 16.8V
50
IN
I
40
+
OUT
– IN
INFORMATION
SINK CURRENT ( A)
100
–
U
60
(V
ID
) INPUT (mV)
80
150
Figure 5e. Typical Setpoint Voltages for V
Change Slightly Depending Upon the Supply Voltage (V
100
W
PROG
LT1620/21 • F05c
200
LT1620/21 • F05a
120
) Changes Slightly
–10
140
–5
10
250
5
0
4.50
PROG2
U
V
PROG
OUT
)
4.75
Pin
V
PROG2
V
5.00
CC
Figure 5b. Typical Setpoint Voltage (V
Depending Upon the Programmed Differential Input Voltage (V
Figure 5d. Sense Amplifier Input Offset Tolerence Degrades for
Input Common Mode Voltage (V
Affects the SENSE, AVG and AVG2 Amplifier Outputs
(V)
V
V
I
OUT
ID
CM
5.25
= 80mV
= 16.8mV
= 130 A
LT1620/21 • F05e
PROG
–10
–20
–30
–40
20
10
14
12
10
0
0
8
2
6
4
5.50
and V
0
0
IN
V
V
I
+
OUT
CC
CM
, IN
20
1
PROG2
= 5V
= 16.8V
= 130 A
–
COMMON MODE VOLTAGE (V
IN
CC
40
+
)
– IN
2
–
60
(V
CM
ID
3
) INPUT (mV)
) Below (V
LT1620/LT1621
80
PROG
4
100
V
V
I
OUT
CC
ID
) Changes Slightly
= 80mV
LT1620/21 • F05d
LT1620/21 • F05b
= 5V
= 130 A
120
5
CM
CC
) (V)
– 0.5V). This
140
36
9
ID
)