Datasheet

LTC6905
3
6905fd
ELECTRICAL CHARACTERISTICS
The l denotes the specifi cations which apply over the full specifi ed
temperature range, otherwise specifi cations are at T
A
= 25°C or as noted. V
+
= 2.7V to 5.5V, R
L
= 15k, C
L
= 5pF, Pin 4 = V
+
unless
otherwise noted. All voltages are with respect to GND.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Δf Frequency Accuracy (Notes 2, 9) V
+
= 2.7V, 17.225MHz < f < 170MHz
V
+
= 5V, 17.225MHz < f < 170MHz
LTC6905CS5
V
+
= 2.7V, 17.225MHz < f < 170MHz
V
+
= 5V, 17.225MHz < f < 170MHz
LTC6905MPS5 (25°C ≤ T ≤ 125°C),
LTC6905HS5 (25°C ≤ T ≤ 125°C),
LTC6905IS5 (25°C ≤ T ≤ 85°C)
V+ = 2.7V, 17.225MHz < f < 170MHz
V+ = 5V, 17.225MHz < f < 170MHz
LTC6905MPS5 (–55°C < T < 125°C),
LTC6905HS5 (–40°C ≤ T ≤ 125°C),
LTC6905IS5 (–40°C ≤ T ≤ 85°C)
V
+
= 2.7V, 17.225MHz < f < 170MHz
V
+
= 5V, 17.225MHz < f < 170MHz
l
l
l
l
±0.5 ±1.4
±2.2
±1.7
±2.5
±1.9
±2.9
±3.5
±3.5
%
%
%
%
%
%
%
%
Δf Frequency Accuracy (Notes 2, 9)
R
SET
Frequency-Setting Resistor Range 10 25 kΩ
f
MAX
Maximum Frequency Pin 4 = V
+
, N = 1 170 MHz
f
MIN
Minimum Frequency Pin 4 = 0V, N = 4 17.225 MHz
Δf/ΔT Freq Drift Over Temp (Note 2) R
SET
= 10k
l
±20 ppm/°C
Δf/ΔV Freq Drift Over Supply (Notes 2, 9) V
+
= 2.7V to 5.5V, R
SET
= 10k
l
0.5 %/V
Peak-to-Peak Timing Jitter (Note 3) 0.8 %
Long-Term Stability of Output Frequency 300 ppm/√kHr
Duty Cycle
l
47.5 50 52.5 %
V
+
Operating Supply Range
l
2.7 5.5 V
I
S
Power Supply Current R
SET
= 10k, N = 1, R
L
= ∞,
f
OSC
= 170MHz, C
L
= 5pF
V
+
= 5.5V
V
+
= 2.7V
l
l
14
7
20
12
mA
mA
R
SET
= 20k, N = 4, R
L
= ∞,
f
OSC
= 21.44MHz, C
L
= 5pF
V
+
= 5.5V
V
+
= 2.7V
l
l
5
3
7
5
mA
mA
V
IH
High Level DIV Input Voltage
l
V
+
– 0.15 V
V
IL
Low Level DIV Input Voltage
l
0.2 V
I
DIV
DIV Input Current (Note 4) Pin 4 = V
+
Pin 4 = 0V
V
+
= 5.5V
V
+
= 5.5V
l
–40
15
–11
40 μA
μA
V
OH
High Level Output Voltage (Note 4) V
+
= 5.5V, Pin 4 = 0V I
OH
= –1mA
I
OH
= –4mA
l
l
5.25
5.20
5.45
5.30
V
V
V
+
= 2.7V, Pin 4 = 0V I
OH
= –1mA
I
OH
= –4mA
l
l
2.5
2.4
2.6
2.4
V
V