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Datasheet Linear Technology LT3042HDD#PBF

Производитель	Linear Technology
Серия	LT3042
Модель	LT3042HDD#PBF

20V, 200mA, Ultralow Noise, Ultrahigh PSRR RF Linear Regulator

Datasheets

Скачать » Datasheet, PDF, 1.2 Мб, Версия: B, Файл закачен 27-03-2018
LT3042 - 20V, 200mA, Ultralow Noise, Ultrahigh PSRR RF Linear Regulator
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LT3042
20V, 200mA, Ultralow Noise,
Ultrahigh PSRR RF Linear Regulator
FEATURES DESCRIPTION Ultralow RMS Noise: 0.8ВµVRMS (10Hz to 100kHz)
nn Ultralow Spot Noise: 2nV/в€љHz at 10kHz
nn Ultrahigh PSRR: 79dB at 1MHz
nn Output Current: 200mA
nn Wide Input Voltage Range: 1.8V to 20V
nn Single Capacitor Improves Noise and PSRR
nn 100ВµA SET Pin Current: В±1% Initial Accuracy
nn Single Resistor Programs Output Voltage
nn High Bandwidth: 1MHz
nn Programmable Current Limit
nn Low Dropout Voltage: 350mV
nn Output Voltage Range: 0V to 15V
nn Programmable Power Good
nn Fast Start-Up Capability
nn Precision Enable/UVLO
nn Parallelable for Lower Noise and Higher Current
nn Internal Current Limit with Foldback
nn Minimum Output Capacitor: 4.7ВµF Ceramic
nn Reverse Battery and Reverse Current Protection
nn 10-Lead MSOP and 3mm Г— 3mm DFN Packages The LTВ®3042 is a high performance low dropout linear ...

Цены

LT3042HDD#PBF на РадиоЛоцман.Цены

Поставщик	Производитель	Наименование	Цена
Элитан	Linear Technology	LT3042HDD	317 руб.
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Цены » Профессиональная электроника и электротехника

Корпус / Упаковка / Маркировка

Корпус	3x3 DFN-10
Код корпуса	DD
Индекс корпуса	05-08-1699

Параметры

Demo Boards	DC2246B,DC2429A
Design Tools	LTspice File
Discrete Pass Element	нет
Dropout Voltage	0.35 В
Экспортный контроль	нет
Основные особенности	Ultralow Noise, Ultrahigh PSRR, Current Source Reference, Output Current Monitor, Power Good, Shutdown
Ishutdown	0.3 мкА
Isupply	2 мА
LDO Output Current	0.2 A
Max Junction Temp	150 Deg
Количество выходов	1
Рабочий диапазон температур	от -40 до 125 °C
Выходной ток	0.2 A
Выходное напряжение	Adj
PSRR	117 дБ
RMS Noise	0.8 µV
Theta JA	34В°C/W (DD), 33В°C/W (MSE)
Тип	PNP
Vin Max	20 В
Vin Min	1.8 В
Vout Max	15 В

Экологический статус

RoHS	Совместим

Application Notes

Скачать » Application Notes - AN159, PDF, 1.1 Мб, 02-02-2016
Measuring 2nV/в€љHz Noise and 120dB Supply Rejection on Linear Regulators
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Application Note 159
February, 2016
Measuring 2nV/в€љHz Noise and 120dB Supply Rejection
on Linear Regulators
The Quest for Quiet
Todd Owen and Amit Patel
Introduction MEASURING OUTPUT VOLTAGE NOISE A quiet, well regulated supply is important for optimum
performance with a number of circuit applications. Voltage controlled oscillators (VCOs) and precision voltage
controlled crystal oscillators (VCXOs) respond to small
changes in their supply very quickly. Phase-locked loops
(PLLs) require a stable supply as signal on the supply
translates directly to phase noise in the output. RF amplifiers require quiet supplies as they have little to no ability
to reject supply variations and regulator variation will
appear as unwanted side bands and lower the signal-tonoise ratio. Low noise amplifiers and analog-to-digital
converters (ADCs) do not have infinite supply rejection
and the cleaner the regulator output is, the higher their
performance. These are just a few applications where linear
regulators are required to provide quiet power supply rails,
but how does one ensure that the regulator is performing
as advertised? Being Quiet is Nothing New Once fully built, one can determine if the supply being
used has low enough noise for the application. Oscillator
phase noise is measured and compared against results
achieved with a known good supply, ADCs are checked ...

Статьи

Скачать » Статьи - LT Journal, PDF, 1.1 Мб, 07-04-2015
Industry's First 0.8µVRMS Noise LDO Has 79dB Power Supply Rejection Ratio at 1MHz
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April 2015 I N T H I S I S S U E patent-pending boost-buck
LED driver topology 8 I2C programmable
supervisors with EEPROM
12 Volume 25 Number 1 IndustryвЂ™s First 0.8ВµVRMS Noise
LDO Has 79dB Power Supply
Rejection Ratio at 1MHz
Amit Patel 18V buck-boost converter
with intelligent PowerPath
control delivers >2A 16 advantages of 75W boost
mode LED driver 22 how to design an isolated,
high frequency, push-pull
DC/DC converter 25 When it comes to powering noise-sensitive analog/RF applications,
low dropout (LDO) linear regulators are generally preferred over their
switching counterparts. Low noise LDOs power a wide range of
analog/RF designs, including frequency synthesizers (PLLs/VCOs),
RF mixers and modulators, high speed and high resolution data
converters (ADCs and DACs) and precision sensors. Nevertheless,
these applications have reached capabilities and sensitivities
that are testing the limits of conventional low noise LDOs.
For instance, in many high end VCOs, power supply noise
directly affects the VCO output phase noise (jitter). Moreover,
to meet overall system efficiency requirements, the LDO
usually post-regulates the output of a relatively noisy ...