Datasheet

LTC6992-1/LTC6992-2/
LTC6992-3/LTC6992-4
10
69921234fc
Typical perForMance characTerisTics
Linearity Near 31% Duty Cycle
N
DIV
= 1 Duty Cycle Drift vs Supply
N
DIV
> 1 Duty Cycle Drift
vs Supply
Supply Current vs V
MOD
V
MOD
/V
SET
(V/V)
26
31
35
34
33
32
36
0.324 0.34 0.356 0.3720.308
0.388
30
29
28
27
6992 G40
DUTY CYCLE (%)
DIVCODE = 4
3 PARTS
SUPPLY (V)
–0.5
0
0.4
0.3
0.2
0.1
0.5
3 4 52
6
–0.1
–0.2
–0.3
–0.4
6992 G41
DRIFT (%)
DIVCODE = 0
V
MOD
/V
SET
= 0.5
V
MOD
/V
SET
= 0.2
V
MOD
/V
SET
= 0.8
5% CLAMP
95% CLAMP
REFERENCED TO V
+
= 4V
SUPPLY (V)
–0.5
0
0.4
0.3
0.2
0.1
0.5
3 4 52
6
–0.1
–0.2
–0.3
–0.4
6992 G42
DRIFT (%)
DIVCODE = 4
REFERENCED TO V
+
= 4V
V
MOD
/V
SET
= 0.5
V
MOD
/V
SET
= 0.2
V
MOD
/V
SET
= 0.8
5% CLAMP
95% CLAMP
V
+
= 3.3V, R
SET
= 200k, and T
A
= 25°C, unless
otherwise noted.
V
MOD
(V)
0
250
350
300
400
0.40.2 0.6 0.80
1
200
150
100
50
6992 G43
POWER SUPPLY CURRENT (µA)
LTC6992-2
R
SET
= 50k, ÷1
R
SET
= 50k, ÷16
R
SET
= 100k, ÷4
R
SET
= 800k, ÷1
Supply Current vs Frequency, 5V
Supply Current vs Frequency, 2.5V
Supply Current vs Supply Voltage
Supply Current vs Temperature
Jitter vs Frequency
SUPPLY VOLTAGE (V)
0
250
350
300
400
3 4 52
6
200
150
100
50
6992 G44
POWER SUPPLY CURRENT (µA)
R
SET
= 50k, ÷1
R
SET
= 50k, ÷4
R
SET
= 50k, ÷16
R
SET
= 100k, ÷1
R
SET
= 800k, ÷1
TEMPERATURE (°C)
–50
0
250
300
350
400
0 25 50
100 125
200
150
100
50
–25
75
6992 G45
POWER SUPPLY CURRENT (µA)
5.0V, R
SET
= 50k, ÷1
2.5V, R
SET
= 50k, ÷1
5.0V, R
SET
= 50k, ÷16
5.0V, R
SET
= 800k, ÷1
2.5V, R
SET
= 800k, ÷1
FREQUENCY (kHz)
0.01
0
1.4
1.6
1.8
2.0
0.1 1
100 1000
1.2
1.0
0.8
0.6
0.4
0.2
10
6992 G46
JITTER (%
P-P
)
÷1, V
+
= 5V
÷1, V
+
= 2.5V
÷4, V
+
= 5V
÷4, V
+
= 2.5V
÷16
÷64
PEAK-TO-PEAK PERIOD
DEVIATION MEASURED
OVER 30s INTERVALS
V
MOD
/V
SET
= 0.5
FREQUENCY (kHz)
0.001
0
250
300
350
400
0.10.01 1
100 1000
200
150
100
50
10
6992 G47
POWER SUPPLY CURRENT (µA)
÷4
÷1
÷16,384
V
+
= 5V
FREQUENCY (kHz)
0.001
0
250
300
350
400
0.10.01 1
100 1000
200
150
100
50
10
6992 G48
POWER SUPPLY CURRENT (µA)
÷4
÷1
÷16,384
V
+
= 2.5V