For more information www.linear.com/LTC6990 ELECTRICAL CHARACTERISTICS SYMBOL PARAMETE" />
參數(shù)資料
型號(hào)： SC-KIT-TBX
廠商： Linear Technology
文件頁(yè)數(shù)： 23/30頁(yè)
文件大?。?/td> 0K
描述： TIMERBLOX SAMPLE KIT
設(shè)計(jì)資源： TimerBlox Designer
特色產(chǎn)品： TimerBlox?
標(biāo)準(zhǔn)包裝： 1
系列： TimerBlox®
主要目的： 計(jì)時(shí)，時(shí)鐘振蕩器
嵌入式： 否
已用 IC / 零件： LTC6990，LTC6991，LTC6992-1，LTC6993-2，LTC6994-1
已供物品： 裸板，樣品 IC
LTC6990
3
6990fc
For more information www.linear.com/LTC6990
ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
fOUT
Output Frequency
Recommended Range: RSET = 50k to 800k
Extended Range: RSET = 25k to 800k
0.488
1000
2000
kHz
fOUT
Frequency Accuracy (Note 4)
Recommended Range
RSET = 50k to 800k
l
±0.8
±1.5
±2.2
%
Extended Range
RSET = 25k to 800k
l
±2.4
±3.2
%
fOUT/T
Frequency Drift Over Temperature
l
±0.005
%/°C
fOUT/V+
Frequency Drift Over Supply
V+ = 4.5V to 5.5V
V+ = 2.25V to 4.5V
l
0.23
0.06
0.55
0.16
%/V
Long-Term Frequency Stability
(Note 11)
90
ppm/√kHr
Period Jitter (Note 10)
NDIV = 1
0.38
%P-P
NDIV = 2
0.22
0.027
%P-P
%RMS
NDIV = 128
0.022
0.004
%P-P
%RMS
Duty Cycle
NDIV = 1, RSET = 25k to 800k
NDIV > 1, RSET = 25k to 800k
l
47
48
50
53
52
%
BW
Frequency Modulation Bandwidth
0.4fOUT
kHz
tS
Frequency Change Settling Time
(Note 9)
tMASTER = tOUT/NDIV
6tMASTER
s
Analog Inputs
VSET
Voltage at SET Pin
l
0.97
1.00
1.03
V
VSET/T
VSET Drift Over Temperature
l
±75
V/°C
VSET/V+ VSET Drift Over Supply
–150
V/V
VSET/ISET VSET Droop with ISET
–7
Ω
RSET
Frequency-Setting Resistor
Recommended Range
Extended Range
l
50
25
800
kΩ
VDIV
DIV Pin Voltage
l
0
V+
V
VDIV/V+
DIV Pin Valid Code Range (Note 5) Deviation from Ideal VDIV/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
RSET = 25k to 800k
l
1.95
V
IS
Supply Current
RL = ∞, NDIV = 1, RSET = 50k
V+ = 5.5V
V+ = 2.25V
l
235
145
283
183
A
RL = ∞, NDIV = 1 RSET = 800k
V+ = 5.5V
V+ = 2.25V
l
71
59
105
92
A
RL = ∞, NDIV = 128, RSET = 50k
V+ = 5.5V
V+ = 2.25V
l
137
106
180
145
A
RL = ∞, NDIV = 128, RSET = 800k
V+ = 5.5V
V+ = 2.25V
l
66
56
100
90
A
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. Test conditions are V+ = 2.25V to 5.5V, OE = V+, DIVCODE = 0 to 15
(NDIV = 1 to 128), RSET = 50k to 800k, RLOAD = 5k, CLOAD = 5pF unless otherwise noted.
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