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参数资料
| 型号： | LTC1799IS5#TRMPBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/14页 |
| 文件大小： | 0K |
| 描述： | IC OSC SILICON 33MHZ TSOT23-5 |
| 产品目录绘图： | TSOT23-5 Series Top |
| 标准包装： | 1 |
| 类型： | 振荡器 - 硅 |
| 频率： | 1kHz ~ 33MHz |
| 电源电压： | 2.7 V ~ 5.5 V |
| 电流 - 电源： | 7mA |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | SOT-23-5 细型，TSOT-23-5 |
| 包装： | 标准包装 |
| 供应商设备封装： | TSOT-23-5 |
| 安装类型： | 表面贴装 |
| 产品目录页面： | 1715 (CN2011-ZH PDF) |
| 其它名称： | LTC1799IS5#TRMPBFDKR |
LTC1799
1
1799fc
Typical applicaTion
FeaTures
DescripTion
1kHz to 33MHz
Resistor Set SOT-23 Oscillator
The LTC1799 is a precision oscillator that is easy to use
and occupies very little PC board space. The oscillator
frequency is programmed by a single external resistor
(RSET). The LTC1799 has been designed for high accuracy
operation (≤1.5% frequency error) without the need for
external trim components.
The LTC1799 operates with a single 2.7V to 5.5V power
supply and provides a rail-to-rail, 50% duty cycle square
wave output. The CMOS output driver ensures fast rise/
fall times and rail-to-rail switching. The frequency-setting
resistor can vary from 3k to 1M to select a master oscil-
lator frequency between 100kHz and 33MHz (5V supply).
The three-state DIV input determines whether the master
clock is divided by 1, 10 or 100 before driving the out-
put, providing three frequency ranges spanning 1kHz to
33MHz (5V supply). The LTC1799 features a proprietary
feedbackloopthatlinearizestherelationshipbetweenRSET
and frequency, eliminating the need for tables to calculate
frequency. The oscillator can be easily programmed using
the simple formula outlined below:
fOSC =10MHz
10k
N RSET
, N
=
100,
10,
1,
DIV Pin
= V +
DIV Pin
= Open
DIV Pin
= GND
applicaTions
n
One External Resistor Sets the Frequency
n
Fast Start-Up Time: <1ms
n
1kHz to 33MHz Frequency Range
n
Frequency Error ≤1.5% 5kHz to 20MHz
(TA = 25°C)
n
Frequency Error ≤2% 5kHz to 20MHz
(TA = 0°C to 70°C)
n
±40ppm/°C Temperature Stability
n
0.05%/V Supply Stability
n
50% ±1% Duty Cycle 1kHz to 2MHz
n
50% ±5% Duty Cycle 2MHz to 20MHz
n
1mA Typical Supply Current
n
100Ω CMOS Output Driver
n
Operates from a Single 2.7V to 5.5V Supply
n
Low Profile (1mm) SOT-23 (ThinSOT Package)
n
Low Cost Precision Oscillator
n
Charge Pump Driver
n
Switching Power Supply Clock Reference
n
Clocking Switched Capacitor Filters
n
Fixed Crystal Oscillator Replacement
n
Ceramic Oscillator Replacement
n
Small Footprint Replacement for Econ Oscillators
L
, LT, LTC, LTM, Linear Technology 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 and 6614313.
Basic Connection
Typical Distribution of Frequency Error,
TA = 25°C (5kHz ≤ fOSC ≤ 20MHz, V+ = 5V)
TSOT-23 Actual Size
V+
1
2
3
5
1kHz ≤ fOSC ≤ 33MHz
5V
3k ≤ RSET ≤ 1M
0.1F
1799 TA01
4
GND
LTC1799
SET
OUT
DIV
OPEN
÷10
÷100
÷1
UNITS
(%)
25
20
15
10
5
0
–1.25
–0.75
–0.25 0 0.25
0.75
1.25
FREQUENCY ERROR (%)
1799 TA02
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