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Linear Technology LTC699X-X TimerBlox: Oscillators, One Shots, PWM, and Delay SC-KIT-TBX SC-KIT-TBX 데이터 시트

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LTC6990
3
6990fc
For more information 
www.linear.com/LTC6990
ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
f
OUT
Output Frequency
Recommended Range: R
SET
 = 50k to 800k 
Extended Range: R
SET
 = 25k to 800k
0.488 
0.488
1000 
2000
kHz 
kHz
∆f
OUT
Frequency Accuracy (Note 4)
Recommended Range 
R
SET
 = 50k to 800k
 
l
±0.8
±1.5 
±2.2
% 
%
Extended Range 
R
SET
 = 25k to 800k
 
l
±2.4 
±3.2
% 
%
∆f
OUT
/
∆T
Frequency Drift Over Temperature
l
±0.005
%/°C
∆f
OUT
/
∆V
+
Frequency Drift Over Supply
V
+
 = 4.5V to 5.5V 
V
+
 = 2.25V to 4.5V
l 
l
0.23 
0.06
0.55 
0.16
%/V 
%/V
Long-Term Frequency Stability
(Note 11)
90
ppm/√kHr
Period Jitter (Note 10)
N
DIV
 = 1
0.38
%
P-P
N
DIV
 = 2
0.22 
0.027
%
P-P 
%
RMS
N
DIV
 = 128
0.022 
0.004
%
P-P 
%
RMS
Duty Cycle
N
DIV
 = 1, R
SET
 = 25k to 800k 
N
DIV
 > 1, R
SET
 = 25k to 800k
l 
l
47 
48
50 
50
53 
52
% 
%
BW
Frequency Modulation Bandwidth
0.4•f
OUT
kHz
t
S
Frequency Change Settling Time 
(Note 9)
t
MASTER
 = t
OUT
/N
DIV
6•t
MASTER
µs
Analog Inputs
V
SET
Voltage at SET Pin
l
0.97
1.00
1.03
V
∆V
SET
/
∆T
V
SET
 Drift Over Temperature
l
±75
µV/°C
∆V
SET
/
∆V
+
V
SET
 Drift Over Supply
–150
µV/V
∆V
SET
/
∆I
SET
V
SET
 Droop with I
SET
–7
Ω
R
SET
Frequency-Setting Resistor
Recommended Range 
Extended Range
l 
l
50 
25
800 
800
kΩ 
kΩ
V
DIV
DIV Pin Voltage
l
0
V
+
V
∆V
DIV
/V
+
DIV Pin Valid Code Range (Note 5) Deviation from Ideal V
DIV
/V
+
 = (DIVCODE + 0.5)/16
l
±1.5
%
DIV Pin Input Current
l
±10
nA
Power Supply
V
+
Operating Supply Voltage Range
l
2.25
5.5
V
Power-On Reset Voltage
R
SET
 = 25k to 800k
l
1.95
V
I
S
Supply Current
R
L
 = ∞, N
DIV
 = 1, R
SET
 = 50k 
V
+
 = 5.5V 
  
V
+
 = 2.25V
l 
l
235 
145
283 
183
µA 
µA
R
L
 = ∞, N
DIV
 = 1 R
SET
 = 800k 
V
+
 = 5.5V 
  
V
+
 = 2.25V
l 
l
71 
59
105 
92
µA 
µA
R
L
 = ∞, N
DIV
 = 128, R
SET
 = 50k 
V
+
 = 5.5V 
  
V
+
 = 2.25V
l 
l
137 
106
180 
145
µA 
µA
R
L
 = ∞, N
DIV
 = 128, R
SET
 = 800k 
V
+
 = 5.5V 
  
V
+
 = 2.25V
l 
l
66 
56
100 
90
µA 
µA
 
The 
l
 denotes the specifications which apply over the full operating 
temperature range, otherwise specifications are at T
A
 = 25°C. Test conditions are V
+
 = 2.25V to 5.5V, OE = V
+
, DIVCODE = 0 to 15  
(N
DIV
 = 1 to 128), R
SET
 = 50k to 800k, R
LOAD
 = 5k, C
LOAD
 = 5pF unless otherwise noted.