lt2940 Linear Technology Corporation, lt2940 Datasheet - Page 7

• Manufacturer Part Number: lt2940
• Description: Power And Current Monitor
• Manufacturer: Linear Technology Corporation

TYPICAL PERFORMANCE CHARACTERISTICS
–10
–20
–30
–40
–10
–20
–30
–40
80
60
40
20
10
10
0
0
0
100
100
100
SEE TEST CIRCUITS FOR LOADING CONDITIONS
SEE TEST CIRCUITS FOR LOADING CONDITIONS
Power Supply Rejection Ratio
vs Frequency
PMON Frequency Response
to Voltage Sense
IMON Frequency Response
to Current Sense
V
R
R
T
V
I
T
V
V
I
T
RELATIVE TO DC GAIN
RELATIVE TO DC GAIN
IMON
PMON
A
A
CC
PMON
IMON
A
I
V
I
= 200mV
= ±200mV
= 25°C
= 25°C
= ±2V
= 25°C
= 12V
= ±200μA
= 5k ON 2V
= ±200μA
1k
1k
1k
= 5k ON 2V
PK
IMON
DC
PK
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
PK
10k
10k
10k
PK
DC
(NOM)
DC
(NOM)
BIAS
BIAS
100k
100k
100k
PMON
1M
1M
1M
R
OUTPUT
OUTPUT
R
L
I-TO-V
R
I-TO-V
AMP
AMP
L
= 5k
L
R
= 2k
= 5k
L
2k
2940 G13
2940 G17
2940 G15
10M
10M
10M
=
–10
–20
–30
–40
–50
–60
–10
–20
–30
–40
25
10
20
15
10
0
0
5
0
100
100
SEE TEST CIRCUITS FOR LOADING CONDITIONS
0.1
PMON Frequency Response
to Current Sense
PMON Input Feedthrough
vs Frequency
SEE TEST CIRCUITS FOR LOADING CONDITIONS
Open Collector Current
vs Open Collector Voltage
RELATIVE TO ±1V
R
T
V
V
I
T
T
OUTPUT PULLING LOW
RELATIVE TO DC GAIN
PMON
A
A
A
V
I
PMON
= ±200mV
= 25°C
= 2V
= 25°C
= 25°C
V
V
V
V
V
I
I
V
OPEN COLLECTOR VOLTAGE (V)
= ±200μA
1k
1k
= 0mV, dV = 0
= ±200mV
= 5k ON 2V
DC
= ±2V
= 0V, dI = 0
PK
FREQUENCY (Hz)
FREQUENCY (Hz)
1
PK
10k
10k
PK
V
PK
V
PK
DC
CC
CC
(NOM)
= 80V
BIAS
= 6V
100k
100k
10
1M
1M
OUTPUT
I-TO-V
R
AMP
L
2940 G18
R
= 5k
L
2k
2940 G16
2940 G14
10M
10M
=
100
LT2940
7
2940f