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参数资料
| 型号： | LTC1799CS5 |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 模拟信号调理 |
| 英文描述： | 1kHz to 30MHz Resistor Set SOT-23 Oscillator |
| 中文描述： | SPECIALTY ANALOG CIRCUIT, PDSO5 |
| 封装： | PLASTIC, MO-193, TSOT-23, 5 PIN |
| 文件页数： | 4/4页 |
| 文件大小： | 120K |
| 代理商： | LTC1799CS5 |
LTC1799
4
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
G
FAX: (408) 434-0507
G
www.linear-tech.com
LINEAR TECHNOLOGY CORPORATION 2001
1799i LT/TP 0101 2K PRINTED IN USA
PACKAGE DESCRIPTIO
U
Dimensions in inches (millimeters) unless otherwise noted.
S5 Package
5-Lead Plastic SOT-23
(LTC DWG # 05-08-1633)
APPLICATIU
W
U
U
Selecting the Divider Setting and Resistor
The LTC1799’s master oscillator has a frequency range
spanning 0.1MHz to 30MHz. However, accuracy may
suffer if the master oscillator is operated at greater than
10MHz with a supply voltage lower than 4V. A program-
mable divider extends the frequency range to greater than
three decades. Table 1 describes the recommended fre-
quencies for each divider setting. Note that the ranges
overlap; at some frequencies there are two divider/resistor
combinations that result in the desired frequency.
In general, any given oscillator frequency (f
OSC
) should be
obtained using the lowest master oscillator frequency.
Lower master oscillator frequencies use less power and
are more accuate. For instance, f
OSC
= 100kHz can be
obtained by either R
SET
= 10k, N = 100, master oscillator
= 10MHz or R
SET
= 100k, N = 10, master oscillator = 1MHz.
The R
SET
= 100k is preferred for lower power and better
accuracy.
Table 1. Frequency Range vs Divider Setting
DIVIDER SETTING
÷
1
DIV (Pin 4) = GND
÷
10
DIV (Pin 4) = Floating
÷
100
DIV (Pin 4) = V
+
*
At master oscillator frequencies greater than 10MHz (R
SET
< 10k
), the
LTC1799 may suffer reduced accuracy with a supply voltage less than 4V.
After choosing the proper divider setting, determine the
correct frequency-setting resistor. Because of the linear
correspondence between oscillation period and resis-
tance, a simple equation relates resistance with frequency.
R
SET
= 10k [10MHz/(N f
OSC
)], N = 1, 10, 100
(R
SETMIN
= 3.32k (5V Supply), 5k (3V Supply),
R
SETMAX
= 1M)
Any resistor, R
SET
, tolerance adds to the inaccuracy of the
oscillator, f
OSC
.
FREQUENCY RANGE
>500kHz
*
50kHz to 1MHz
< 100kHz
Settling Time
The settling time is proportional to R
SET
and is approxi-
mately t
SETTLE
≈
R
SET
(5
μ
s/k
). This parameter is
guaranteed by design and not 100% tested.
1.50 – 1.75
(0.059 – 0.069)
0.35 – 0.55
(0.014 – 0.022)
0.35 – 0.50
(0.014 – 0.020)
FIVE PLACES (NOTE 2)
S5 SOT-23 0599
0.90 – 1.45
(0.035 – 0.057)
0.90 – 1.30
(0.035 – 0.051)
0.00 – 0.15
(0.00 – 0.006)
0.09 – 0.20
(0.004 – 0.008)
(NOTE 2)
2.60 – 3.00
(0.102 – 0.118)
NOTE:
1. DIMENSIONS ARE IN MILLIMETERS
2. DIMENSIONS ARE INCLUSIVE OF PLATING
3. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR
4. MOLD FLASH SHALL NOT EXCEED 0.254mm
5. PACKAGE EIAJ REFERENCE IS SC-74A (EIAJ)
0.95
(0.037)
REF
2.80 – 3.00
(0.110 – 0.118)
(NOTE 3)
1.90
(0.074)
REF
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC1799CS5#PBF | 制造商:Linear Technology 功能描述:1KHZ TO 33MHZ RESISTOR SET SOT-23 OSCILLATOR 制造商:Linear Technology 功能描述:Silicon Oscillator 5-Pin TSOT-23 制造商:Linear Technology 功能描述:OSCILLATOR 1KHZ TO 33MHZ 5.5 制造商:Linear Technology 功能描述:OSCILLATOR, 1KHZ TO 33MHZ, 5.5V, TSOT-23 制造商:Linear Technology 功能描述:OSCILLATOR, 1KHZ TO 33MHZ, 5.5V, TSOT-23-5; Operating Mode:-; Frequency:33MHz; Supply Voltage Min:2.7V; Supply Voltage Max:5.5V; Digital IC Case Style:TSOT-23; No. of Pins:5; Clock External Input:No; Operating Temperature Min:0C ;RoHS Compliant: Yes |
| LTC1799CS5#TR | 功能描述:IC OSC SILICON 33MHZ TSOT23-5 RoHS:否 类别:集成电路 (IC) >> 时钟/计时 - 可编程计时器和振荡器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:45 系列:- 类型:温度 - 补偿晶体振荡器（TCXO） 计数:- 频率:25MHz 电源电压:3.135 V ~ 3.465 V 电流 - 电源:1.5mA 工作温度:-40°C ~ 85°C 封装/外壳:16-SOIC（0.295"，7.50mm 宽） 包装:管件 供应商设备封装:16-SOIC W 安装类型:表面贴装 |
| LTC1799CS5#TRM | 功能描述:IC OSC SILICON 33MHZ TSOT23-5 RoHS:否 类别:集成电路 (IC) >> 时钟/计时 - 可编程计时器和振荡器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:45 系列:- 类型:温度 - 补偿晶体振荡器（TCXO） 计数:- 频率:25MHz 电源电压:3.135 V ~ 3.465 V 电流 - 电源:1.5mA 工作温度:-40°C ~ 85°C 封装/外壳:16-SOIC（0.295"，7.50mm 宽） 包装:管件 供应商设备封装:16-SOIC W 安装类型:表面贴装 |
| LTC1799CS5#TRMPBF | 功能描述:IC OSC SILICON 33MHZ TSOT23-5 RoHS:是 类别:集成电路 (IC) >> 时钟/计时 - 可编程计时器和振荡器 系列:- 标准包装:3,000 系列:- 类型:振荡器 - 晶体 计数:- 频率:- 电源电压:2.3 V ~ 5.5 V 电流 - 电源:1.07mA 工作温度:-30°C ~ 80°C 封装/外壳:SOT-665 包装:带卷 (TR) 供应商设备封装:SS迷你型-5D 安装类型:表面贴装 其它名称:AN8955SSMTXLTR |
| LTC1799CS5#TRMPBF (CUT REEL) | 制造商:Linear Technology 功能描述: |
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