Datasheet

4
LT1431
1413fc
Voltage Gain and Phase
vs Frequency
Transconductance and Phase
vs Frequency (REF to COLL)
Transconductance and Phase
vs Frequency (Ref to Comp)
Dynamic Impedance vs Frequency
V
COMP
vs Temperature vs I
COLL
I
COMP
vs V
COMP
vs V
REF
Noise vs Frequency
0.1Hz to 10Hz Noise
Propagation Delay vs Overdrive
TYPICAL PERFOR A CE CHARACTERISTICS
UW
OVERDRIVE (mV)
0
PROPAGATION DELAY (µs)
90
120
150
200
LT1431 • TPC07
60
30
0
50
100
150
250
75
105
135
45
15
3 1
1k
OUTPUT
56
5V
LT1431
V
REF
± OVERDRIVE
OUTPUT HIGH-TO-LOW
OUTPUT LOW-TO-HIGH
FREQUENCY (Hz)
20
REF-TO-COLL 1k LOAD A
V
(dB)
40
80
120
140
100 10k 100k 10M
LT1431 • TPC08
0
1k
1M
100
60
–20
–90
–45
45
135
180
–135
90
0
–180
PHASE (DEG)
PHASE
A
V
FREQUENCY (Hz)
10
10
100 10k 100k 10M
LT1431 • TPC09
1k 1M
–90
–45
45
135
180
–135
90
0
–180
PHASE (DEG)
10
9
10
8
10
7
10
6
10
5
10
4
10
3
10
2
REF-TO-COLL g
m
(µ )
Ω
PHASE
g
m
FREQUENCY (Hz)
10
4
100 10k 100k 10M
LT1431 • TPC10
1k 1M
–100
–80
–40
0
20
–120
–20
–60
–140
PHASE (DEG)
3 × 10
3
10
3
0.1
REF-TO-COLL g
m
(µ )
Ω
PHASE
g
m
3 × 10
2
FREQUENCY (Hz)
100
0.8
1.0
1.2
1.4
1k 10k 100k
LT1431 • TPC11
0.6
0.4
0.2
0
I
K
≤ 100mA
Z
KA
(Ω)
TEMPERATURE (°C)
–50
V
COMP
(V)
2.0
2.5
3.0
25 75
LT1431 • TPC12
1.5
1.0
–25 0
50 100 125
0.5
0
I
COLL
= 100mA
I
COLL
= 10mA
V
COMP
(V)
0
I
COMP
(µA)
400
500
600
1.5 2.5
LT1431 • TPC13
300
200
0.5 1.0
2.0 3.0 3.5
100
0
V
REF
= 5V
V
REF
= 4V
V
REF
= 3V
V
REF
= 2.53V
FREQUENCY (Hz)
NOISE (nV/√Hz)
1000
1 100 1k 100k
LT1431 • G14
10 10k
500
0
TIME (MINUTES)
035
LT1431 • TPC15
12
46
NOISE VOLTAGE (50µV/DIV)