- 您现在的位置：买卖IC网 > PDF目录1908 > CPC5712U (IXYS Integrated Circuits Division)PHONE LINE MON W/DETECTOR 16QSOP PDF资料下载
参数资料
| 型号： | CPC5712U |
| 厂商： | IXYS Integrated Circuits Division |
| 文件页数： | 10/11页 |
| 文件大小： | 0K |
| 描述： | PHONE LINE MON W/DETECTOR 16QSOP |
| 标准包装： | 100 |
| 功能： | 电话线监控器，带检测器（PLMD） |
| 电路数： | 1 |
| 电源电压： | 3 V ~ 5.5 V |
| 电流 - 电源： | 1.72mA |
| 功率（瓦特）： | 50mW |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SOP |
| 包装： | 管件 |
| 包括： | 固定电平极性检测器，电平检测器 |
INTEGRATED CIRCUITS DIVISION
CPC5712
8
www.ixysic.com
R02
3.1 Line Interface
Between the CPC5712 and the TIP/RING line is a
high impedance resistive divider network that provides
sufficient impedance to meet the barrier insulation
specifications in safety regulations and comply with
the on-hook DC leakage to ground requirements from
the various network compatibility specifications.
To ensure regulatory compliance, a 20M
or greater
resistance is required from the individual TIP and
RING leads to the IN+ and IN- inputs. For most
applications where the tip and ring interface does not
have a ground referenced surge protector, Clare
recommends using two 1206-size 10M
resistors in
series to provide the minimum impedance and to meet
surge requirements. Resistors having a smaller
physical footprint may be used when ground
referenced surge protection is available.
In practice, each 1206-size resistor is capable of
withstanding the 2000V peak waveforms typical of
lightning surges on the phone line. Hence, two 1206
resistors can withstand 4000V lightning pulses.
3.2 Differential Input Resistor
The differential input resistor placed across the IN+
and IN- inputs provides two functions.
From the application perspective, this component
provides a scaled down representation of the tip and
ring line voltage to the CPC5712 inputs. The voltage
applied to the inputs is easily calculated because it is
derived from a simple resistive divider comprising the
tip and ring input resistors and the differential input
resistor.
For improved performance, the CPC5712 signal path
is trimmed at the factory to reduce comparator
detection errors caused by offset currents and
voltages. The CPC5712’s input offset effects are
reduced by trimming the device with an 806k
input
resistor. Using any other value resistor at the inputs
negates the trim and introduces offset errors.
3.3 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
3.3.1 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
, R5=137k. See Figure 1.
相关PDF资料 |
PDF描述 |
|---|---|
| CPC7220W | IC ANALOG SWITCH 8CH HV 28-PLCC |
| CPC7232W | IC ANALOG SWITCH 8CH HV 28-PLCC |
| CPC7514Z | IC LINE CARD ACCESS SWITC 20SOIC |
| CS4121ENF16G | IC TACH/SPEEDO DRIVER 16-DIP |
| CS4122XDWF24G | IC DRIVER AIR CORE TRPL 24-SOIC |
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。