
LTC6900
4
6900fa
TYPICAL PERFORMANCE CHARACTERISTICS
Supply Current
vs Output Frequency
Output Resistance
vs Supply Voltage
LTC6900 Output Operating at
20MHz, VS = 5V
LTC6900 Output Operating at
10MHz, VS = 3V
Frequency Variation vs RSET
Frequency Variation Over
Temperature
Peak-to-Peak Jitter
vs Output Frequency
RSET (Ω)
1k
V
ARIA
TION
(%)
4
3
2
1
0
–1
–2
–3
–4
10k
100k
1M
6900 G01
TYPICAL LOW
TYPICAL HIGH
TA = 25°C
GUARANTEED LIMITS APPLY OVER
20kΩ ≤ RSET ≤ 400kΩ
TEMPERATURE (°C)
–40
VARIATION
(%)
1.00
0.75
0.50
0.25
0
–0.25
–0.50
–0.75
–1.00
6900 G02
–20
0
20
40
60
80
TYPICAL
LOW
RSET = 63.4k
÷1 OR ÷10 OR ÷100
TYPICAL
HIGH
OUTPUT FREQUENCY (Hz)
JITTER
(%
P-P
)
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
6900 G03
1k
100k
1M
10k
10M
÷1, VA = 3V
÷1, VA = 5V
÷10
÷100
SUPPLY VOLTAGE (V)
2.5
3.0
40
OUTPUT
RESISTANCE
(Ω)
80
140
3.5
4.5
5.0
6900 G05
60
120
100
4.0
5.5
6.0
OUTPUT SINKING CURRENT
OUTPUT SOURCING CURRENT
TA = 25°C
12.5ns/DIV
0V
6900 G06
1V/DIV
V+ = 5V, RSET = 10k, CL = 10pF
25ns/DIV
0V
6900 G07
1V/DIV
V+ = 3V, RSET = 20k, CL = 10pF
OUTPUT FREQUENCY (Hz)
SUPPLY
CURRENT
(mA)
2.0
1.5
1.0
0.5
0
6900 G04
÷100, 3V
÷10, 3V
÷1, 3V
÷100, 5V
÷10, 5V
÷1, 5V
TA = 25°C
CL = 5pF
0
1k
10k
100k
1M
10M