參數(shù)資料
型號(hào): LTC6992CDCB-2#TRMPBF
廠商: Linear Technology
文件頁(yè)數(shù): 8/34頁(yè)
文件大?。?/td> 0K
描述: IC OSC SILICON 1MHZ 6-DFN
產(chǎn)品培訓(xùn)模塊: TimerBlox Family Timing Devices
產(chǎn)品目錄繪圖: LTC699_DFN
特色產(chǎn)品: LTC?6992 TimerBlox?
TimerBlox?
標(biāo)準(zhǔn)包裝: 1
系列: TimerBlox®
類型: 振蕩器 - 硅
頻率: 3.81Hz ~ 1MHz
電源電壓: 2.25 V ~ 5.5 V
電流 - 電源: 365µA
工作溫度: 0°C ~ 70°C
封裝/外殼: 6-WFDFN 裸露焊盤
包裝: 標(biāo)準(zhǔn)包裝
供應(yīng)商設(shè)備封裝: 6-DFN-EP(2x3)
安裝類型: 表面貼裝
配用: DC1562A-C-ND - BOARD EVAL LTC6992-1
其它名稱: LTC6992CDCB-2#TRMPBFDKR
LTC6992-1/LTC6992-2/
LTC6992-3/LTC6992-4
16
69921234fc
Pulse Width (Duty Cycle) Modulation
The MOD pin is a high impedance analog input providing
direct control of the output duty cycle. The duty cycle is
proportional to the voltage applied to the MOD pin, VMOD.
Duty Cycle = D =
VMOD
0.8 VSET
1
8
The PWM duty cycle accuracy
D specifies that the above
equation is valid to within ±4.5% for VMOD between 0.2
VSET and 0.8 VSET (12.5% to 87.5% duty cycle).
Since VSET = 1V ±30mV, the duty cycle equation may be
approximated by the following equation.
Duty Cycle = D
VMOD 100mV
800mV
The VMOD control range is approximately 0.1V to 0.9V.
Driving VMOD beyond that range (towards GND or V+) will
have no further affect on the duty cycle.
Duty Cycle Limits
The only difference between the four versions of the
LTC6992 is the limits, or clamps, placed on the output
duty cycle. The LTC6992-1 generates output duty cycles
ranging from 0% to 100%. At 0% or 100% the output
will stop oscillating and rest at GND or V+, respectively.
The LTC6992-2 will never stop oscillating, regardless of
the VMOD level. Internal clamping circuits limit its duty
cycle to a 5% to 95% range (1% to 99% guaranteed).
Therefore, its VMOD control range is 0.14 VSET to 0.86
VSET (approximately 0.14V to 0.86V).
The LTC6992-3 and LTC6992-4 complete the family by
providing one-sided clamping. The LTC6992-3 allows
0% to 95% duty cycle, and the LTC6992-4 allows 5% to
100% duty cycle.
Output Polarity (POL Bit)
The duty cycle equation describes a proportional transfer
function, where duty cycle increases as VMOD increases.
The LTC6992 includes a POL bit (determined by the
DIVCODE as described earlier) that inverts the output
signal. This makes the duty cycle gain negative, reducing
duty cycle as VMOD increases.
operaTion
Figure 3. POL Bit Functionality
6992 F03
OUT
POL = 1
tOUT
DtOUT
OUT
POL = 0
tOUT
DtOUT
D
=
VMOD
0.8 VSET
1
8
D
= 1
VMOD
0.8 VSET
1
8
相關(guān)PDF資料
PDF描述
LTC6992CS6-4#TRMPBF IC OSC SILICON 1MHZ TSOT23-6
M83723/78R10028 CONN PLUG 2POS STRAIGHT W/PINS
V110A28M300BF3 CONVERTER MOD DC/DC 28V 300W
V110A28M300BF2 CONVERTER MOD DC/DC 28V 300W
MAX1058BETM+ IC ADC/DAC 10BIT 48-TQFN-EP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC6992CDCB-3#PBF 制造商:Linear Technology 功能描述:TIMERBLOX: VOLTAGE-CONTROLLED PULSE WIDTH MODULATOR (PWM) 制造商:Linear Technology 功能描述:Silicon Oscillator 6-Pin DFN EP
LTC6992CDCB-3#TRMPBF 功能描述:IC OSC SILICON 1MHZ 6-DFN 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® 標(biāo)準(zhǔn)包裝:3,000 系列:- 類型:振蕩器 - 晶體 計(jì)數(shù):- 頻率:- 電源電壓:2.3 V ~ 5.5 V 電流 - 電源:1.07mA 工作溫度:-30°C ~ 80°C 封裝/外殼:SOT-665 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:SS迷你型-5D 安裝類型:表面貼裝 其它名稱:AN8955SSMTXLTR
LTC6992CDCB-3#TRPBF 功能描述:IC OSC SILICON 1MHZ 6-DFN 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
LTC6992CDCB-4#TRMPBF 功能描述:IC OSC SILICON 1MHZ 6-DFN 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® 標(biāo)準(zhǔn)包裝:3,000 系列:- 類型:振蕩器 - 晶體 計(jì)數(shù):- 頻率:- 電源電壓:2.3 V ~ 5.5 V 電流 - 電源:1.07mA 工作溫度:-30°C ~ 80°C 封裝/外殼:SOT-665 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:SS迷你型-5D 安裝類型:表面貼裝 其它名稱:AN8955SSMTXLTR
LTC6992CDCB-4#TRPBF 功能描述:IC OSC SILICON 1MHZ 6-DFN 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