LTC6990 Linear Technology, LTC6990 Datasheet - Page 3

• Manufacturer Part Number: LTC6990
• Description: TimerBlox: Voltage Controlled Silicon Oscillator
• Manufacturer: Linear Technology

ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifi cations are at T
(N
SYMBOL
f
Δf
Δf
Δf
BW
t
Analog Inputs
V
ΔV
ΔV
ΔV
R
V
ΔV
Power Supply
V
I
OUT
S
S
SET
SET
DIV
+
OUT
OUT
OUT
DIV
SET
SET
SET
DIV
/ΔT
/ΔV
/V
= 1 to 128), R
/ΔT
/ΔV
/ΔI
+
SET
+
+
PARAMETER
Output Frequency
Frequency Accuracy (Note 4)
Frequency Drift Over Temperature
Frequency Drift Over Supply
Period Jitter (Note 10)
Duty Cycle
Frequency Modulation Bandwidth
Frequency Change Settling Time
(Note 9)
Voltage at SET Pin
V
V
V
Frequency-Setting Resistor
DIV Pin Voltage
DIV Pin Valid Code Range (Note 5)
DIV Pin Input Current
Operating Supply Voltage Range
Power-On Reset Voltage
Supply Current
SET
SET
SET
Drift Over Temperature
Drift Over Supply
Droop with I
SET
= 50k to 800k, R
SET
LOAD
= 5k, C
CONDITIONS
Recommended Range: R
Extended Range: R
Recommended Range
R
Extended Range
R
V
V
N
N
N
N
N
t
Recommended Range
Extended Range
Deviation from Ideal V
R
R
R
R
R
MASTER
+
+
SET
SET
DIV
DIV
DIV
DIV
DIV
SET
L
L
L
L
= 4.5V to 5.5V
= 2.25V to 4.5V
= ∞, N
= ∞, N
= ∞, N
= ∞, N
= 1
= 2
= 128
= 1, R
> 1, R
= 50k to 800k
= 25k to 800k
= 25k to 800k
LOAD
A
= t
= 25°C. Test conditions are V
DIV
DIV
DIV
DIV
SET
SET
OUT
= 5pF unless otherwise noted.
= 1, R
= 1 R
= 128, R
= 128, R
/N
= 25k to 800k
= 25k to 800k
The
DIV
SET
SET
SET
l
SET
SET
DIV
denotes the specifi cations which apply over the full operating
= 800k
= 25k to 800k
= 50k
SET
/V
= 50k
= 800k
+
= 50k to 800k
= (DIVCODE + 0.5)/16
V
V
V
V
V
V
V
V
+
+
+
+
+
+
+
+
= 5.5V
= 2.25V
= 5.5V
= 2.25V
= 5.5V
= 2.25V
= 5.5V
= 2.25V
+
= 2.25V to 5.5V, OE = V
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
0.488
0.488
0.97
2.25
MIN
47
48
50
25
0
6•t
0.4•f
±0.005
+
0.027
0.022
0.004
–150
±0.8
0.23
0.06
0.38
0.22
1.00
, DIVCODE = 0 to 15
TYP
MASTER
±75
235
145
137
106
50
50
–7
71
59
66
56
OUT
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LTC6990
1000
2000
MAX
±1.5
±2.2
±2.4
±3.2
0.55
0.16
1.03
±1.5
1.95
800
800
±10
283
183
105
180
145
100
5.5
53
52
V
92
90
+
UNITS
%
%
μV/°C
%/°C
3
%
%
%
6990p
μV/V
%/V
%/V
RMS
RMS
kHz
kHz
kHz
P-P
P-P
P-P
kΩ
kΩ
nA
μA
μA
μA
μA
μA
μA
μA
μA
μs
%
%
%
%
%
%
%
Ω
V
V
V
V