- 您现在的位置：买卖IC网 > PDF目录26506 > CPC5712U (CLARE INC) PDF资料下载
参数资料
| 型号： | CPC5712U |
| 厂商： | CLARE INC |
| 元件分类： | 通信及网络 |
| 中文描述： | SPECIALTY TELECOM CIRCUIT, PDSO16 |
| 封装： | ROHS COMPLIANT, QSOP-16 |
| 文件页数： | 9/10页 |
| 文件大小： | 387K |
| 代理商： | CPC5712U |
CPC5712
R00G
www.clare.com
8
3.2 Voltage Detector Design
From the application requirements given above, the
desired LIU detector threshold voltages are therefore:
V
H2 = 15V
V
L2 = 12V
and the detector thresholds for the LOOP detector are:
V
H1 = 5V
V
L1 = 3V
3.2.1 Calculate Resistor Values
From the design equations provided in
page 6 this gives:
R1=R1
R2=0.666667 R1
R3=2.333333 R1
R4=R1
R5=5.125558 R1
Summing these equations provides the following
result:
R1+R2+R3+R4+R5 = 10.12556 R1
and since this sum is bound by:
20k
< (R1 + R2 + R3 + R4 + R5) < 1M
this reduces to: 20k
< (10.12556 R1) < 1M.
Taking into account the additional constraint of resistor
tolerance, 1% in this example, the range of allowable
values for R1 is further reduced and becomes:
1.995k
< R1 < 97.782k permitting a value
for R1 to be chosen.
Selecting a standard value from the E96, 1% table for
R1 of 26.7k
, the calculated values for the remaining
resistors becomes:
R2=17.8k
R3=62.3k
R4=26.7k
R5=136.85k
Since the calculated values of R3 and R5 are not
standard values, a reasonable compromise for these
resistors is: R3=61.9k
and R5=137k. See
3.2.2 Verify Resistor Selection
Once the resistor values are chosen it is necessary to
back calculate the nominal detector thresholds.
To do this the following equations are provided for two
variables:
where R∑ is the sum of the resistive interface network
and RREF is the sum of the resistor divider network on
the reference voltage output.
The following values are also needed to perform the
threshold calculations. They are:
V
REF = 1.5V
R
IN1 = RIN2 = 2 x 10M = 20M
R
DIFF = 806k
G=2.5
which gives:
R∑ = 40.806M
and
R
REF = 270.1k
The threshold equations are:
1.
2.
3.
4.
Using the selected standard 1% resistor values, and
back calculating to the threshold voltages produces
these results:
V
L1 = 3.00280V
V
H1 = 5.00467V
V
L2 = 11.9662V
V
H2 = 14.9690V
As can be seen, the error from using standard value
resistors is less than 0.1% for VL1 and VH1 and is less
than 0.3% for VL2 and VH2.
RΣ
RIN1 RIN2 RDIFF
++
=
RREF
R1 R2 R3 R4 R5
++++
=
VL1
VREF RΣ R1
GRDIFF RREF
----------------------------------------
=
VH1
VREF RΣ R1 R2
+
()
GRDIFF RREF
-----------------------------------------------------
=
VL2
VREF RΣ R1 R2 R3
++
()
GRDIFF RREF
------------------------------------------------------------------
=
VH2
VREF RΣ R1 R2 R3 R4
+++
()
GRDIFF RREF
--------------------------------------------------------------------------------
=
相关PDF资料 |
PDF描述 |
|---|---|
| CPC7220K | |
| CPC7220KTR | |
| CPC7220WTR | |
| CPC7232WTR | |
| CPC7232W | |
相关代理商/技术参数 |
参数描述 |
|---|---|
| CPC5712UTR | 功能描述:固态继电器-PCB安装 Phone Line Monitor,T/R RoHS:否 制造商:Omron Electronics 控制电压范围: 负载电压额定值:40 V 负载电流额定值:120 mA 触点形式:1 Form A (SPST-NO) 输出设备:MOSFET 封装 / 箱体:USOP-4 安装风格:SMD/SMT |
| CPC5750U | 功能描述:Telecom IC CODEC 24-SSOP 制造商:ixys integrated circuits division 系列:- 包装:管件 零件状态:有效 功能:CODEC 接口:SPI 电路数:1 电压 - 电源:3 V ~ 3.6 V 电流 - 电源:7.5mA 功率（W）:- 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:24-SSOP（0.154"，3.90mm 宽） 供应商器件封装:24-SSOP 包括:- 标准包装:50 |
| CPC5750UTR | 功能描述:IC VOICE BAND CODEC 24SSOP 制造商:ixys integrated circuits division 系列:- 包装:带卷（TR） 零件状态:在售 功能:CODEC 接口:SPI 电路数:1 电压 - 电源:3 V ~ 3.6 V 电流 - 电源:7.5mA 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:24-SSOP（0.154"，3.90mm 宽） 供应商器件封装:24-SSOP 包括:- 标准包装:2,000 |
| CPC5902G | 功能描述:ISOLAT 3.75KVRMS 2CH BIDIR 8DIP RoHS:是 类别:隔离器 >> 光隔离器 - 逻辑输出 系列:- 标准包装:1,000 系列:- 电压 - 隔离:3750Vrms 通道数:1，单向 电流 - 输出 / 通道:50mA 数据速率:15MBd 传输延迟高 - 低 @ 如果:50ns @ 7.5mA 电流 - DC 正向(If):20mA 输入类型:DC 输出类型:开路集电极 安装类型:表面贴装 封装/外壳:8-SMD，鸥翼型 供应商设备封装:8-DIP 鸥翼型 包装:带卷 (TR) |
| CPC5902G_5903G-EVAL | 功能描述:CPC5902, CPC5903 - Interface, Buffer/Repeater Evaluation Board 制造商:ixys integrated circuits division 系列:- 零件状态:有效 主要用途:接口，缓冲器/中继器 嵌入式:- 使用的 IC/零件:CPC5902，CPC5903 主要属性:隔离 辅助属性:- 所含物品:板 标准包装:1 |
发布紧急采购，3分钟左右您将得到回复。