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参数资料
| 型号： | LTC6991CS6#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/24页 |
| 文件大小： | 0K |
| 描述： | IC OSC SILICON 977HZ TSOT23-6 |
| 产品培训模块： | TimerBlox Family Timing Devices |
| 产品目录绘图： | LTC699_TSOT-23 |
| 特色产品： | TimerBlox? |
| 标准包装： | 2,500 |
| 系列： | TimerBlox® |
| 类型： | 振荡器 - 硅 |
| 频率： | 29.1µHz ~ 977Hz |
| 电源电压： | 2.25 V ~ 5.5 V |
| 电流 - 电源： | 135µA |
| 工作温度： | 0°C ~ 70°C |
| 封装/外壳： | SOT-23-6 细型，TSOT-23-6 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | TSOT-23-6 |
| 安装类型： | 表面贴装 |
| 配用： | DC1562A-B-ND - BOARD EVAL LTC6991 |
LTC6991
1
6991fb
TYPICAL APPLICATION
FEATURES
DESCRIPTION
TimerBlox: Resettable, Low
Frequency Oscillator
The LTC6991 is a silicon oscillator with a programmable
period range of 1.024ms to 9.54 hours (29.1μHz to 977Hz),
specifically intended for long duration timing events. The
LTC6991 is part of the TimerBlox family of versatile silicon
timing devices.
A single resistor, RSET, programs the LTC6991’s internal
master oscillator frequency. The output clock period
is determined by this master oscillator and an internal
frequency divider, NDIV, programmable to eight settings
from 1 to 221.
tOUT =
NDIV RSET
50k
Ω
1.024ms, NDIV = 1,8,64,...,221
In normal operation, the LTC6991 oscillates with a 50%
duty cycle. A reset function is provided to truncate the
pulse (reducing the duty cycle). The reset pin can also be
used to prevent the output from oscillating.
The RST and OUT pins can be configured for active-low
or active-high operation using a polarity function.
POL BIT
RST PIN
OUTPUT STATE
0
Oscillating
0
1
0 (reset)
1
0
1 (reset)
1
Oscillating
For easy configuration of the LTC6991, download the
TimerBlox Designer tool at www.linear.com/timerblox.
APPLICATIONS
n Period Range: 1ms to 9.5 Hours
n Configured with 1 to 3 Resistors
n <1.5% Maximum Frequency Error
n Output Reset Function
n 2.25V to 5.5V Single Supply Operation
n 55μA to 80μA Supply Current
(2ms to 9.5hr Clock Period)
n 500μs Start-Up Time
n CMOS Output Driver Sources/Sinks 20mA
n –55°C to 125°C Operating Temperature Range
n Available in Low Profile (1mm) SOT-23 (ThinSOT)
and 2mm × 3mm DFN Packages
n “Heartbeat” Timers
n Watchdog Timers
n Intervalometers
n Periodic “Wake-Up” Call
n High Vibration, High Acceleration Environments
n Portable and Battery-Powered Equipment
L, LT, LTC, 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.
Low Frequency Pulse Generator
Clock Period Range over Eight Divider Settings
DIV PIN VOLTAGE, VDIV (V)
0
CLOCK
PERIOD
(LOG
SCALE)
10Sec
10Min
2.5
6991 TA01b
100ms
1ms
0.625
1.25
1.875
10Hr
1Sec
1Min
10ms
1Hr
LTC6991
5V
0.1μF
OUT
R1
1M
R2
392k
RSET
715k
RST
GND
SET
OUT
V+
DIV
CPW
470pF
RPW
2.26k
6991 TA01a
60 SECONDS
1μs PULSE WIDTH
tPULSE ≈ RPW
PW ≈ 1μs
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| LTC6991HDCB#TRMPBF | 功能描述:IC OSC SILICON 977HZ 6-DFN 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:TimerBlox® 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 |
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| LTC6991HS6#TRMPBF | 功能描述:IC OSC SILICON 977HZ TSOT23-6 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:TimerBlox® 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 |
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