Datasheet

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