Datasheet

LTC6990
6
6990fc
For more information www.linear.com/LTC6990
TYPICAL PERFORMANCE CHARACTERISTICS
Peak-to-Peak Jitter vs Frequency
OE Threshold Voltage
vs Supply Voltage
Supply Current vs Frequency, 5V
Supply Current vs Frequency, 2.5V Supply Current vs OE Pin Voltage
V
+
= 3V, unless otherwise noted.
Output Resistance
vs Supply Voltage
FREQUENCY (kHz)
POWER SUPPLY CURRNET (µA)
6990 G10
400
300
350
200
250
150
100
50
0
0.1 1 1000 1000010010
V
+
= 5V
T
A
= 25°C
÷128
÷1
÷2
RECOMMENDED RANGE
EXTENDED RANGE
FREQUENCY (kHz)
POWER SUPPLY CURRNET (µA)
6990 G11
400
300
350
200
250
150
100
50
0
0.1 1 1000 1000010010
V
+
= 2.5V
T
A
= 25°C
RECOMMENDED RANGE
EXTENDED RANGE
÷128
÷1
÷2
V
OE
/V
+
(%)
POWER SUPPLY CURRENT (µA)
6990 G12
200
100
125
75
150
175
50
0 604020 80 100
5V, OE RISING
T
A
= 25°C
R
SET
= 800k
DIVCODE = 7
5V, OE FALLING
3.3V,
OE RISING
3.3V, OE FALLING
SUPPLY VOLTAGE (V)
OE PIN VOLTAGE (V)
6990 G14
3.5
1.0
2.0
3.0
0.5
1.5
2.5
0
2 43 5 6
T
A
= 25°C
POSITIVE-GOING
NEGATIVE-GOING
FREQUENCY (kHz)
JITTER (%
P-P
)
6990 G13
0.50
0.25
0.30
0.40
0.20
0.10
0.05
0.15
0.35
0.45
0
0.1 10 1001 1000
T
A
= 25°C
V
+
= 5V
PEAK-TO-PEAK PERIOD
DEVIATION MEASURED
OVER 30sec INTERVALS
÷1
÷2
÷4
÷128
Typical V
SET
Distribution Supply Current vs Supply Voltage Supply Current vs Temperature
V
SET
(V)
NUMBER OF UNITS
6990 G07
300
150
100
200
250
50
0
0.986 1.0020.994 1.010 1.018
T
A
= 25°C
2 LOTS
DFN AND SOT-23
1416 UNITS
SUPPLY VOLTAGE (V)
POWER SUPPLY CURRENT (µA)
6990 G05
250
150
100
50
200
0
2 43 5 6
T
A
= 25°C
R
SET
= 800k, ÷1
R
SET
= 800k, ÷128
R
SET
= 50k, ÷1
R
SET
= 50k, ÷2
R
SET
= 50k, ÷128
TEMPERATURE (°C)
POWER SUPPLY CURRENT (µA)
6990 G09
250
100
50
150
200
0
–50 75500 25–25 100 125
5.5V, R
SET
= 800k, ÷1
2.25V, R
SET
= 800k, ÷128
5.5V, R
SET
= 50k, ÷1
2.25V, R
SET
= 50k, ÷1
5.5V, R
SET
= 50k, ÷128
SUPPLY VOLTAGE (V)
OUTPUT RESISTANCE (Ω)
6990 G15
50
25
20
35
45
5
10
15
30
40
0
2 43 5 6
T
A
= 25°C
OUTPUT SOURCING CURRENT
OUTPUT SINKING CURRENT