LTC6902 Linear Technology, LTC6902 Datasheet - Page 4

• Manufacturer Part Number: LTC6902
• Description: Multiphase Oscillator
• Manufacturer: Linear Technology

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ELECTRICAL CHARACTERISTICS
LTC6902
Note 1: Absolute Maximum Ratings are those values beyond which the life
of the device may be impaired.
Note 2: Frequencies near 100kHz and 1MHz may be generated using two
different values of R
frequencies, the error is specified under the following assumption:
20k < R
Note 3: Frequency accuracy is defined as the deviation from the f
equation.
Note 4: Jitter is the ratio of the peak-to-peak distribution of the period to
the mean of the period. This specification is based on characterization and
is not 100% tested.
Note 5: Guaranteed by 5V test.
Note 6: To conform with the Logic IC Standard convention, current out of
a pin is arbitrarily given as a negative value.
4
TYPICAL PERFOR A CE CHARACTERISTICS
–1
–2
–3
–4
4
3
2
1
0
1k
Frequency Variation vs R
SET
T
GUARANTEED LIMITS APPLY OVER
20k
A
= 25 C
400k for 5kHz f
R
SET
10k
SET
400k
R
3.5
3.0
2.5
2.0
1.5
1.0
0.5
(see Applications Information). For these
SET
0
1k
TYPICAL HIGH
TYPICAL LOW
Supply Current vs Output
Frequency [SSFM Disabled,
2-Phase Mode (M = 1)]
( )
100k
100, 3V
OUT
10k
SET
OUTPUT FREQUENCY (Hz)
W
10MHz.
10, 3V
100, 5V
1M
6902 G01
100k
U
10, 5V
1M
–0.25
–0.50
–0.75
–1.00
1, 3V
1, 5V
1.00
0.75
0.50
0.25
0
–40
10M
6902 G04
Frequency Variation Over
Temperature
R
OUT
1 OR 10 OR 100
SET
–20
= 63.4k
TEMPERATURE ( C)
0
TYPICAL
TYPICAL
HIGH
LOW
20
Note 7: Output rise and fall times are measured between the 10% and the
90% power supply levels with no output loading. These specifications are
based on characterization.
Note 8: f
the f
excursion.
Note 9: The LTC6902CMS and LTC6902IMS are guaranteed functional
over the operating temperature range of –40 C to 85 C.
Note 10: The LTC6902CMS is guaranteed to meet 0 C to 70 C specifica-
tions and are designed, characterized and expected to meet the specified
performance from –40 C to 85 C but is not tested or QA sampled at these
temperatures. The LTC6902IMS is guaranteed to meet specified perfor-
mance from –40 C to 85 C.
OUT
40
140
120
100
40
80
60
frequency set by the R
MAX
2.5
60
Output Resistance
vs Supply Voltage
OUTPUT SINKING CURRENT
is defined as the highest frequency excursion and is equal to
3.0
6902 G02
80
3.5
OUTPUT SOURCING CURRENT
SUPPLY VOLTAGE (V)
4.0
SET
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
4.5
0
1k
resistor. f
Peak-to-Peak Jitter vs Output
Frequency (M = 1, 2-Phase Mode)
100
5.0
T
A
10k
5.5
OUTPUT FREQUENCY (Hz)
= 25 C
MIN
6902 G05
1, V
10
is the lowest frequency
6.0
A
= 3V
100k
1, V
A
1M
= 5V
6902 G03
10M
6902f