LTC6905C(RevA) データシートの表示（PDF） - Linear Technology
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LTC6905C Datasheet PDF : 8 Pages
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LTC6905
ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full specified
temperature range, otherwise specifications are at TA = 25°C or as noted. V+ = 2.7V to 5.5V, RL= 15k, CL = 5pF, Pin 4 = V+ unless
otherwise noted. All voltages are with respect to GND.
SYMBOL
VIL
IDIV
PARAMETER
Low Level DIV Input Voltage
DIV Input Current (Note 4)
VOH
High Level Output Voltage (Note 4)
VOL
Low Level Output Voltage (Note 4)
tr, tf
OUT Rise/Fall Time (Note 5)
VSET
Voltage at RSET Pin
CONDITIONS
Pin 4 = V+
Pin 4 = 0V
V+ = 5.5V
V+ = 2.7V
V+ = 5.5V
V+ = 2.7V
V+ = 5.5V
V+ = 2.7V
IOH = – 1mA
IOH = – 4mA
IOH = – 1mA
IOH = – 4mA
IOL = 1mA
IOL = 4mA
IOL = 1mA
IOL = 4mA
MIN
●
V+ = 5.5V ●
V+ = 5.5V ● – 40
● 5.25
● 5.20
● 2.5
● 2.4
●
●
●
●
● 4.27
● 1.61
TYP
15
– 11
5.45
5.30
2.6
2.4
0.05
0.2
0.1
0.4
0.5
4.5
1.7
MAX
0.2
40
0.25
0.3
0.3
0.5
4.73
1.79
UNITS
V
µA
µA
V
V
V
V
V
V
V
V
ns
V
V
Note 1: Absolute Maximum Ratings are those values beyond which the life
of the device may be impaired.
Note 2: Frequency accuracy is defined as the deviation from the fOSC
equation. Accuracy is tested with DIV = V+, N = 1 and other divide ratios
are guaranteed by design.
Note 3: 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 4: To conform with the Logic IC Standard convention, current out of
a pin is arbitrarily given as a negative value.
Note 5: Output rise and fall times are measured between the 10% and
90% power supply levels.
Note 6: A heat sink may be required to keep the junction temperature
below the absolute maximum when the output is shorted indefinitely.
Note 7: The LTC6905C is guaranteed functional over the operating
temperature range.
Note 8: The LTC6905 is guaranteed to meet specified performance from
0°C to 70°C. The LTC6905C-XXX is designed, characterized and expected
to meet specified performance from –40°C to 85°C but is not tested or QA
sampled at these temperatures. The LTC6905I-XXX is guaranteed to meet
specified performance from –40°C to 85°C.
Note 9: The LTC6905 is optimized for the performance with a 3V power
supply voltage. Please consult LTC Marketing for parts optimized for 5V
operation.
TYPICAL PERFOR A CE CHARACTERISTICS
Supply Current vs Frequency
18
5.5V
16
2.7V
14
÷1
12
10
÷2
8
÷4
÷1
6
÷2
4 ÷4
2
0
0
50
100
150
200
FREQUENCY (MHz)
6905 G01
Frequency Error vs RSET
0.60
0.40
0.20
0
–0.20
–0.40
–0.60
–0.80
10 12 14 16 18 20 22 24
RSET (kΩ)
6905 G02
Frequency Error vs Supply Voltage
1.40
1.20
1.00
0.80
0.60
0.40
0.20
0
–0.20
–0.40
2.5
3 3.5 4 4.5
SUPPLY VOLTAGE (V)
5 5.5
6905 G03
6905fa
3
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