- 您现在的位置：买卖IC网 > PDF目录69323 > RTC-4543SB:B-0 REAL TIME CLOCK, PDSO18 PDF资料下载
参数资料
| 型号： | RTC-4543SB:B-0 |
| 元件分类： | 时钟/数据恢复及定时提取 |
| 英文描述： | REAL TIME CLOCK, PDSO18 |
| 封装： | SOP-18 |
| 文件页数： | 6/16页 |
| 文件大小： | 224K |
RTC - 4543 SA/SB
Page
11
ETM09E-02
11. Reference Data
(1) Example of Frequency-Temperature Characteristics
θT = +25 °C Typ.
α = -0.035 × 10-6/ °C 2 Typ.
Temperature [°C]
-150
-140
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
+10
-50 -40 -30 -20 -10
0
+10 +20 +30 +40 +50 +60 +70 +80 +90+100
F
req
ue
nc
y
fT
Δ
× 10-6
Determining the frequency stability (clock accuracy)
1.The
frequency-temperature
characteristics
can
be
approximated by the following equation:
ΔfT = α(θT-θX)2
ΔfT
: Frequency deviation at any given temperature
α( /°C2)
: Second-order temperature
: Highest temperature(+25
°C±5 °C)
: Any given temperature
θT(°C)
θX(°C)
((-0.035
±0.005)×10-6/°C2)
2. In order to determine the clock accuracy, add in the
frequency tolerance and the voltage characteristics.
Δf/f = Δf/f0 + ΔfT + Δfv
Δf
: Clock accuracy at any given temperature
and voltage (frequency stability)
: Frequency accuracy
Δ T
Δ v
: Frequency deviation at any given temperature
: Frequency deviation at any given voltage
/f
Δf/f 0
f
3. Determining the daily error
Daily error =
Δf/f × 86400 (seconds)
With error of 11.574
× 10-6, the error of the clock is
about one second per day.
(2)Example of Frequency-Voltage Characteristics
Frequency [
×10-6 ]
-1.0
0.0
+1.0
23
45
Conditions
5 V reference Voltage,
Ta=+25
°C
-2.0
Supply voltage (VDD)[V]
(3)Example of Current Consumption-Voltage
Characteristics
Current consumpiton[
μA ]
1.0
2.0
3.0
4.0
5.0
Conditions
No load, Ta=+25
°C
Supply voltage (VDD) [V]
0.0
Note : This data shows values obtained from a sample lot.
相关PDF资料 |
PDF描述 |
|---|---|
| RTC-4543SBB-3 | 0 TIMER(S), REAL TIME CLOCK, PDSO18 |
| RTC-4543SBB-0 | 0 TIMER(S), REAL TIME CLOCK, PDSO18 |
| RTC-4574NBB | 0 TIMER(S), REAL TIME CLOCK, PDSO22 |
| RTC-4574SAB-0 | 0 TIMER(S), REAL TIME CLOCK, PDSO14 |
| RTC-4574SAB-3 | 0 TIMER(S), REAL TIME CLOCK, PDSO14 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| RTC4553 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:SERIAL-INTERFACE REAL TIME CLOCK MODULE |
| RTC-4553 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:SERIAL-INTERFACE REAL TIME CLOCK MODULE |
| RTC4553A | 制造商:未知厂家 制造商全称:未知厂家 功能描述:IC SMD |
| RTC-4553A | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Real-Time Clock |
| RTC-4553A2 | 功能描述:IC REAL TIME CLOCK 14-SOIC RoHS:否 类别:集成电路 (IC) >> 时钟/计时 - 实时时钟 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:- 类型:时钟/日历 特点:警报器，闰年，SRAM 存储容量:- 时间格式:HH:MM:SS（12/24 小时） 数据格式:YY-MM-DD-dd 接口:SPI 电源电压:2 V ~ 5.5 V 电压 - 电源，电池:- 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-WDFN 裸露焊盘 供应商设备封装:8-TDFN EP 包装:管件 |
发布紧急采购，3分钟左右您将得到回复。