LTC6908-1 View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LTC6908-1' PDF : 16 Pages View PDF
LTC6908-1/LTC6908-2
ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. Test conditions are V+ = 2.7V to 5.5V, RL = 5k, CL = 5pF unless otherwise
noted. The modulation
from the SET pin to the
is turned
V+ pin.
off
(MOD
is
connected
to
OUT2)
unless
otherwise
specified.
RSET
is
defined
as
the
resistor
connected
SYMBOL PARAMETER
CONDITIONS
ΔfOUT
Frequency Accuracy (Note 4)
V+ = 2.7V
250kHz ≤ fOUT ≤ 5MHz
250kHz ≤ fOUT ≤ 5MHz
50kHz ≤ fOUT < 250kHz
V+ = 5V
250kHz ≤ fOUT ≤ 5MHz
250kHz ≤ fOUT ≤ 5MHz
50kHz ≤ fOUT < 250kHz
5MHz < fOUT ≤ 10MHz
RSET
Frequency Setting Resistor Range V+ = 2.7V
| ΔfOUT | ≤ 1.5%
| ΔfOUT | ≤ 2.5%
| ΔfOUT | ≤ 3.5%
V+ = 5V
| ΔfOUT | ≤ 2%
| ΔfOUT | ≤ 3%
| ΔfOUT | ≤ 4%
| ΔfOUT | ≤ 4.5%
ΔfOUT/ΔT Frequency Drift Over Temperature RSET = 100k
ΔfOUT/ΔV+ Frequency Drift Over Supply (Note 4) V+ = 2.7V to 3.6V, RSET = 100k
V+ = 4.5V to 5.5V, RSET = 100k
Period Variation
(Frequency Spreading)
RSET = 100k, MOD Pin = V+, GND or OPEN
Long-Term Stability of Output
Frequency (Note 8)
Duty Cycle (Note 5)
V+
Operating Supply Range
No Modulation, 250kHz ≤ fOUT ≤ 1MHz
IS
Power Supply Current
VR+SE=T
= 2000k,
5V
RL
=
∞,
fOUT
=
50kHz,
MOD
Pin
=
V+
V+ = 2.7V
RSET = 20k, RL = ∞, fOUT = 5MHz, MOD Pin = GND
V+ = 5V
V+ = 2.7V
VIH_MOD High Level MOD Input Voltage
VIL_MOD
IMOD
VOH
VOL
tr
tf
Low Level MOD Input Voltage
MOD Pin Input Current (Note 6)
High Level Output Voltage (Note 6)
(OUT1, OUT2)
Low Level Output Voltage (Note 6)
Output Rise Time (Note 7)
Output Fall Time (Note 7)
MOD Pin = V+, V+ = 5V
MOD Pin = GND, V+ = 5V
V+ = 5V
V+ = 2.7V
V+ = 5V
V+ = 2.7V
V+ = 5V
V+ = 2.7V
IOH = –0.3mA
IOH = –1.2mA
IOH = –0.3mA
IOH = –0.8mA
IOL = 0.3mA
IOL = 1.2mA
IOL = 0.3mA
IOL = 0.8mA
V+ = 5V
V+ = 2.7V
MIN TYP MAX
±0.5 ±1.5
●
±2
±2.5
●
±2.5 ±3.5
±1
±2
●
±2.5
±3
●
±3
±4
●
±3.5 ±4.5
20
400
● 20
400
● 400
2000
20
400
● 20
400
● 400
2000
● 10
20
●
±0.004
●
0.04 0.25
●
0.4
0.9
● ±7.5 ±10 ±12.5
UNITS
%
%
%
%
%
%
%
k
k
k
k
k
k
k
%/°C
%/V
%/V
%
300
ppm/√kHr
● 45
50
55
%
● 2.7
5.5
V
●
0.4
0.65
mA
●
0.4
0.6
mA
●
1.25
1.7
mA
●
0.9
1.3
mA
● V+ – 0.4
V
●
0.4
V
●
2
4
µA
● –4
–2
µA
● 4.75
4.9
V
● 4.4
4.7
V
● 2.35
2.6
V
● 1.85
2.2
V
●
0.05 0.15
V
●
0.2
0.5
V
●
0.1
0.3
V
●
0.4
0.7
V
6
ns
11
ns
5
ns
9
ns
690812fa
3
Share Link: 
