參數(shù)資料
型號(hào)： LTC6990CDCB#TRPBF
廠商： Linear Technology
文件頁(yè)數(shù)： 1/30頁(yè)
文件大?。?/td> 0K
描述： IC OSC SILICON 1MHZ 6DFN
產(chǎn)品培訓(xùn)模塊： TimerBlox Family Timing Devices
特色產(chǎn)品： TimerBlox?
標(biāo)準(zhǔn)包裝： 2,500
系列： TimerBlox®
類型： 振蕩器 - 硅
頻率： 488Hz ~ 1MHz
電源電壓： 2.25 V ~ 5.5 V
電流 - 電源： 235µA
工作溫度： 0°C ~ 70°C
封裝/外殼： 6-WFDFN 裸露焊盤
包裝： 帶卷 (TR)
供應(yīng)商設(shè)備封裝： 6-DFN-EP（2x3）
安裝類型： 表面貼裝
配用： DC1562A-A-ND - BOARD EVAL LTC6990
LTC6990
1
6990fc
For more information www.linear.com/LTC6990
TYPICAL APPLICATION
DESCRIPTION
TimerBlox: Voltage
Controlled Silicon Oscillator
The LTC6990 is a precision silicon oscillator with a pro-
grammable frequency range of 488Hz to 2MHz. It can be
used as a fixed-frequency or voltage-controlled oscillator
(VCO). The LTC6990 is part of the TimerBlox family of
versatile silicon timing devices.
A single resistor, RSET, programs the LTC6990’s internal
masteroscillatorfrequency.Theoutputfrequencyisdeter-
mined by this master oscillator and an internal frequency
divider,NDIV,programmabletoeightsettingsfrom1to128.
fOUT =
1MHz
NDIV
50k
RSET
, NDIV = 1, 2, 4 …128
Optionally, a second resistor at the SET input provides
linear voltage control of the output frequency and can be
used for frequency modulation. A narrow or wide VCO
tuning range can be configured by the appropriate selec-
tion of the two resistors.
The LTC6990 includes an enable function that is synchro-
nized with the master oscillator to ensure clean, glitch-free
output pulses. The disabled output can be configured to
be high impedance or forced low.
For easy configuration of the LTC6990, download the
TimerBlox Designer tool at www.linear.com/timerblox.
Voltage Controlled Oscillator with 16:1 Frequency Range
L
, LT, LTC and LTM, Linear Technology, TimerBlox and the Linear logo are registered
trademarks and ThinSOT is a trademark of Linear Technology Corporation. All other trademarks
are the property of their respective owners. Protected by U.S. Patents, including 6342817,
6614313.
FEATURES
APPLICATIONS
n
Fixed-Frequency or Voltage-Controlled Operation
– Fixed: Single Resistor Programs Frequency
with <1.5% Max Error
– VCO: Two Resistors Set VCO Center
Frequency and Tuning Range
n
Frequency Range: 488Hz to 2MHz
n
2.25V to 5.5V Single Supply Operation
n
72A Supply Current at 100kHz
n
500s Start-Up Time
n
VCO Bandwidth >300kHz at 1MHz
n
CMOS Logic Output Sources/Sinks 20mA
n
50% Duty Cycle Square Wave Output
n
Output Enable (Selectable Low or Hi-Z When Disabled)
n
–55°C to 125°C Operating Temperature Range
n
Available in Low Profile (1mm) SOT-23 (ThinSOT)
and 2mm × 3mm DFN Package
n
Low Cost Precision Programmable Oscillator
n
Voltage-Controlled Oscillator
n
High Vibration, High Acceleration Environments
n
Replacement for Fixed Crystal and Ceramic Oscillators
n
Portable and Battery-Powered Equipment
VCO Transfer Function
VCTRL (V)
0
f OUT
(kHz)
1000
750
250
500
0
0.5
6990 TA01b
2
1
1.5
6990 TA01a
LTC6990
OE
GND
SET
OUT
V+
DIV
C1
0.1F
RSET
100k
V+
VCTRL
RVCO
100k
fOUT = 1MHz VCTRL 0.5
MHz
V
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LTC6990CS6#PBF 制造商:Linear Technology 功能描述:TIMERBLOX: VOLTAGE CONTROLLED SILICON OSCILLATOR 制造商:Linear Technology 功能描述:IC VOLTAGE CONTROLLED OSCILLATOR SOT23-6 制造商:Linear Technology 功能描述:IC VOLTAGE CONTROLLED OSCILLATOR SOT23-6; Operating Mode:-; Frequency:2MHz; Supply Voltage Min:2.25V; Supply Voltage Max:5.5V; Digital IC Case Style:SOT-23; No. of Pins:6; Clock External Input:Yes; Operating Temperature Min:0C ;RoHS Compliant: Yes
LTC6990CS6#TRMPBF 功能描述:IC OSC SILICON 1MHZ TSOT23-6 RoHS:是 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 可編程計(jì)時(shí)器和振蕩器 系列:TimerBlox® 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:45 系列:- 類型:溫度 - 補(bǔ)償晶體振蕩器（TCXO） 計(jì)數(shù):- 頻率:25MHz 電源電壓:3.135 V ~ 3.465 V 電流 - 電源:1.5mA 工作溫度:-40°C ~ 85°C 封裝/外殼:16-SOIC（0.295"，7.50mm 寬） 包裝:管件 供應(yīng)商設(shè)備封裝:16-SOIC W 安裝類型:表面貼裝
LTC6990CS6#TRPBF 功能描述:IC OSC SILICON 1MHZ TSOT23-6 RoHS:是 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 可編程計(jì)時(shí)器和振蕩器 系列:TimerBlox® 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:45 系列:- 類型:溫度 - 補(bǔ)償晶體振蕩器（TCXO） 計(jì)數(shù):- 頻率:25MHz 電源電壓:3.135 V ~ 3.465 V 電流 - 電源:1.5mA 工作溫度:-40°C ~ 85°C 封裝/外殼:16-SOIC（0.295"，7.50mm 寬） 包裝:管件 供應(yīng)商設(shè)備封裝:16-SOIC W 安裝類型:表面貼裝
LTC6990CS6PBF 制造商:LINER 制造商全稱:Linear Technology 功能描述:TimerBlox: Voltage Controlled Silicon Oscillator
LTC6990CS6-PBF 制造商:LINER 制造商全稱:Linear Technology 功能描述:TimerBlox: Voltage Controlled Silicon Oscillator
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