
LTC1799
4
1799fc
Typical perForMance characTerisTics
Peak-to-Peak Jitter vs Frequency
Supply Current
vs Output Frequency
Output Resistance
vs Supply Voltage
LTC1799 Output Operating at
20MHz, VS = 5V
LTC1799 Output Operating at
10MHz, VS = 3V
Frequency Variation
vs RSET
Frequency Variation
Over Temperature
4
3
2
1
0
–1
–2
–3
–4
1
10
100
1000
1799 G01
RSET (k)
VARIA
TION
(%)
TA = 25°C
GUARANTEED LIMITS APPLY
OVER 5k TO 200k RANGE
TYPICAL
HIGH
TYPICAL
LOW
TEMPERATURE (°C)
–40
VARIATION
(%)
0.50
0.25
0.75
1.00
20
60
1799 G02
0
–0.50
–0.25
–20
0
40
80
–0.75
–1.00
RSET = 31.6k
÷1 OR ÷10 OR ÷100
TYPICAL
HIGH
TYPICAL
LOW
OUTPUT FREQUENCY, fOUT (Hz)
0.2
JITTER
(%) 0.4
0.7
0.1
0.3
0.5
0.6
1k
100k
1M
10M
100M
1799 G03
0
10k
÷100
÷10
÷1
OUTPUT FREQUENCY, fOUT (Hz)
1.0
SUPPLY
CURRENT
(mA)
1.5
2.5
3.0
4.0
4.5
1k
100k
1M
100M
1799 G04
0.5
10k
10M
3.5
2.0
0
÷100 (5V)
÷10 (5V)
÷1 (5V)
÷1 (3V)
÷10 (3V)
÷100 (3V)
TA = 25°C
CL = 5pF
RL = 1M
SUPPLY VOLTAGE (V)
2.5
3.0
40
OUTPUT
RESISTANCE
()
80
140
3.5
4.5
5.0
1799 G05
60
120
100
4.0
5.5
6.0
OUTPUT SINKING CURRENT
OUTPUT SOURCING CURRENT
TA = 25°C
12.5ns/DIV
1V/DIV
1799 G06
V+ = 5V, RSET = 5k, CL = 10pF
25ns/DIV
1V/DIV
1799 G07
V+ = 3V, RSET = 10k, CL = 10pF