欢迎访问ic37.com |
会员登录 免费注册
会员中心
企业资讯   人才招聘  
电子百科

电子百科

Datasheet下载 IC品牌 缩略语 技术文章 IC型号

产品导航

ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789
产品
  • 产品
  • PDF

    • 最近搜索

    热门搜索

    搜索
    发布采购
    所在地： 型号： 精确
    • 批量询价
    •  
    • 供应商
    • 型号
    • 数量
    • 厂商
    • 封装
    • 批号
    • 交易说明
    • 询价
    更多
    • BL102-RED图

    • 上海金庆电子技术有限公司

       该会员已使用本站15年以上
    • BL102-RED
    • 数量1 
    • 厂家ALCOSWITCH/TYCO 
    • 封装 
    • 批号新 
    • 全新原装 货期两周
    • QQ:1484215649QQ：1484215649 复制
      QQ:729272152QQ：729272152 复制
    • 021-51872561 QQ:1484215649QQ:729272152

    产品型号BL1062A1的Datasheet PDF文件预览

    BL1062A1  
    Low voltage transmission circuits with dialer interface  
    1. GENERAL DESCRIPTION  
    The BL1062A1 is integrated circuits that perform all speech and line interface functions  
    required in fully electronic telephone sets. It performs electronic switching between dialling and  
    speech. The ICs operate at line voltage down to 1.6 V DC (with reduced performance) to facilitate  
    the use of more telephone sets connected in parallel. BL1062A1 improves the EMC performance  
    in-circuit that can enhance the telephone sets’ EMC.  
    2. FEATURES  
    ꢀ
    ꢀ
    ꢀ
    ꢀ
    Low DC line voltage; operates down to 1.6 V (excluding polarity guard)  
    Voltage regulator with adjustable static resistance  
    Provides a supply for external circuits  
    Symmetrical high-impedance inputs (64 Κ Ω ) for dynamic, magnetic or piezoelectric  
    microphones  
    ꢀ
    ꢀ
    ꢀ
    ꢀ
    ꢀ
    ꢀ
    ꢀ
    ꢀ
    ꢀ
    Asymmetrical high-impedance input (32 ΚΩ) for electret microphones  
    DTMF signal input with confidence tone  
    Mute input for pulse or DTMF dialling, active LOW (MUTE)  
    Receiving amplifier for dynamic, magnetic or piezoelectric earpieces  
    Large gain setting ranges on microphone and earpiece amplifiers  
    Line loss compensation (line current dependent) for microphone and earpiece amplifiers  
    Gain control curve adaptable to exchange supply  
    DC line voltage adjustment facility  
    Enhanced EMC performanc  
    3. BLOCK DIAGRAM  
    Fig. 1 Block Diagram  
    http://www.belling.com.cn  
    - 1 -  
    8/25/2006  
    Total 7 Pages  
    Wrote by 2006  
    BL1062A1  
    4. Pin Configurations, Definitions  
    SYMBOL  
    LN  
    PIN  
    1
    DESCRIPTION  
    positive line terminal  
    GAS1  
    2
    gain adjustment; transmitting  
    amplifier  
    GAS2  
    QR  
    3
    4
    5
    gain adjustment; transmitting  
    amplifier  
    non-inverting output; receiving  
    amplifier  
    gain adjustment; receiving  
    amplifier  
    GAR  
    6
    7
    8
    9
    Inverting microphone input  
    non-inverting microphone input  
    NC  
    MIΧ−  
    MIC+  
    NC  
    V
    EE  
    Negative line terminal  
    IR  
    10 Receiving amplifier input  
    DTMF  
    MUTE  
    11 dual-tone multi-frequency input  
    12 mute input (see note 1)  
    V
    CC  
    13 positive supply decoupling  
    14 voltage regulator decoupling  
    15 automatic gain control input  
    16 slope (DC resistance) adjustment  
    REG  
    AGC  
    SLPE  
    5. Function Description  
    Supplies VCC , LN, SLPE, REG  
    Power for the IC and its peripheral circuits is usually obtained from the telephone line. The  
    supply voltage is derived from the line via a dropping resistor and regulated by the IC. The supply  
    voltage VCC may also be used to supply external circuits e.g. dialling and control circuits.  
    Decoupling of the supply voltage is performed by a capacitor between VCC and VEE . The internal  
    voltage regulator is decoupled by a capacitor between REG and VEE . The DC current flowing into  
    the set is determined by the exchange supply voltage Vexch, the feeding bridge resistance Rexch  
    and the DC resistance of the telephone line Rline  
    .
    At line currents below 9 mA the internal reference voltage is automatically adjusted to a lower  
    value (typically 1.6 V at 1 mA). This means that more sets can be operated in parallel with DC line  
    voltages (excluding the polarity guard) down to an absolute minimum voltage of 1.6 V. At line  
    currents below 9 mA the circuit has limited sending and receiving levels. The internal reference  
    voltage can be adjusted by means of an external resistor (RVA ). This resistor when connected  
    between LN and REG will decrease the internal reference voltage and when connected between  
    REG and SLPE will increase the internal reference voltage.  
    Microphone inputs MIC+ and MIC− and gain pins GAS1 and GAS2  
    The circuit has symmetrical microphone inputs. Its input impedance is 64 kΩ (2 x 32 kΩ) and  
    its voltage gain is typically 52 dB (when R7 = 68 kΩ, see Figures 2 and 3). Dynamic, magnetic,  
    piezoelectric or electret (with built-in FET source followers) can be used. The gain of the  
    microphone amplifier can be adjusted between 44 dB and 52 dB to suit the sensitivity of the  
    transducer in use. The gain is proportional to the value of R7, which is connected between GAS1  
    and GAS2.  
    http://www.belling.com.cn  
    - 2 -  
    8/25/2006  
    Total 7 Pages  
    Wrote by 2006  
    BL1062A1  
    Input MUTE  
    When MUTE is LOW or open-circuit, the DTMF input is enabled and the microphone and  
    receiving amplifier inputs are inhibited. The reverse is true when MUTE is HIGH. MUTE switching  
    causes only negligible clicking on the line and earpiece output. If the number of parallel sets in use  
    causes a drop in line current to below 6 mA the DTMF amplifier becomes active independent to the  
    DC level applied to the MUTE input.  
    Dual-tone multi-frequency input DTMF  
    When the DTMF input is enabled dialling tones may be sent on to the line. The voltage gain  
    from DTMF to LN is typically 25.5 dB (when R7 = 68 kΩ) and varies with R7 in the same way as  
    the microphone gain. The signalling tones can be heard in the earpiece at a low level (confidence  
    tone).  
    Receiving amplifier IR, QR and GAR  
    The receiving amplifier has one input (IR) and a non-inverting output (QR). The IR to QR gain is  
    typically 31 dB (when R4 = 100 kΩ). It can be adjusted between 20 and 31 dB to match the  
    sensitivity of the transducer in use. The gain is set with the value of R4, which is connected  
    between GAR and QR. The overall receive gain, between LN and QR, is calculated by subtracting  
    the anti-sidetone network attenuation (32 dB) from the amplifier gain. The output voltage of the  
    receiving amplifier is specified for continuous-wave drive. The maximum output voltage will be  
    higher under speech conditions where the peak to RMS ratio is higher.  
    Automatic Gain Control input AGC  
    Automatic line loss compensation is achieved by connecting a resistor (R6) between AGC  
    and VEE . The automatic gain control varies the gain of the microphone amplifier and the receiving  
    amplifier in accordance with the DC line current. The control range is 5.8 dB which corresponds to  
    a line length of 5 km for a 0.5 mm diameter twisted-pair copper cable with a DC resistance of 176  
    Ω/km and average attenuation of 1.2 dB/km). Resistor R6 should be chosen in accordance with  
    the exchange supply voltage and its feeding bridge resistance. The ratio of start and stop currents  
    of the AGC curve is independent of the value of R6. If no automatic line-loss compensation is  
    required the AGC pin may be left open-circuit. The amplifiers, in this condition, will give their  
    maximum specified gain.  
    Enhanced EMC performance  
    The input pins BL1062A1 is added RC filters to improve the EMC performance, so the  
    telephone sets which used BL1062A1 are easily to handle the EMC design.  
    LIMITING VALUES  
    SYMBOL  
    PARAMETER  
    CONDITIONS  
    MIN. MAX. UNIT  
    V
    V
    LN  
    positive continuous line voltage  
    12  
    13.2  
    V
    V
    −
    −
    LN(R)  
    repetitive line voltage during  
    switch-on or line interruption  
    repetitive peak line voltage for  
    a 1 ms pulse per 5 s  
    V
    LN(RM)  
    28  
    V
    R9 = 20 Ω; R10 = 13 Ω;  
    see Fig.6  
    −
    I
    P
    T
    T
    line  
    line current  
    total power dissipation  
    operating ambient temperature  
    storage temperature  
    140  
    600  
    +75  
    +125  
    mA  
    mW  
    oC  
    R9 = 20 Ω  
    R9 = 20 Ω  
    −
    −
    −25  
    −40  
    tot  
    amb  
    stg  
    oC  
    http://www.belling.com.cn  
    - 3 -  
    8/25/2006  
    Total 7 Pages  
    Wrote by 2006  
    BL1062A1  
    6. CHARACTERISTICS  
    line = 11 to 140 mA; VEE = 0 V; f = 800 Hz; Tamb =25 oC; unless otherwise specified.  
    I
    SYMBOL  
    PARAMETER  
    voltage drop over  
    circuit between LN  
    and VEE  
    CONDITIONS  
    MIC inputs open-circuit  
    line = 1 mA  
    line = 4 mA  
    line = 15 mA  
    line = 100 mA  
    line = 15 mA;  
    VA(LN to REG)=68KΩ  
    VA(LN to SLPE)=39KΩ  
    CC = 2.8 V  
    MIN.  
    TYP. MAX. UNIT  
    V
    LN  
    I
    I
    I
    I
    I
    1.6  
    1.9  
    4.0  
    5.7  
    V
    V
    3.55  
    4.9  
    4.25  
    6.5  
    V
    LN  
    Voltage drop over  
    circuit bewteen LN  
    and VEE  
    supply current  
    supply voltage  
    available for  
    3.5  
    4.5  
    R
    R
    I
    CC  
    V
    1.35  
    mA  
    −
    0.9  
    V
    CC  
    Iline = 15 mA;  
    MUTE = LOW I  
    p
    p
    = 1.2 mA  
    = 0 mA  
    2.2  
    2.5  
    2.7  
    3.4  
    4.5  
    3.8  
    V
    V
    peripheral circuitry MUTE = LOW I  
    V
    V
    |Zi|  
    Input impedance  
    between MIC- and  
    MIC+  
    Common mode  
    rejection ratio  
    voltage gain MIC+  
    or MIC− to LN  
    Between MIC- and MIC+  
    64  
    82  
    KΩ  
    CMRR  
    dB  
    Gv  
    MIC  
    52.0  
    45.5  
    54.5  
    47.0  
    dB  
    dB  
    I
    I
    line = 15 mA; R7 = 68 kΩ  
    line = 100 mA; R7 = 68 kΩ  
    50.5  
    44.0  
    Gain variation with F=300 and 3400 Hz  
    frequency  
    dB  
    △Gvf  
    ±0.2  
    reference  
    800Hz  
    to  
    Gain variation with Without R6;Iline=50mA;  
    dB  
    △GvT  
    ±0.2  
    temperature  
    Tamb=－25 and +75℃  
    reference to 25℃  
    Input impedance  
    of DTMT  
    voltage gain from  
    DTMF to LN  
    |Zi|  
    20.7  
    25.5  
    ±0.2  
    KΩ  
    dB  
    dB  
    Gv  
    DTMF  
    27.0  
    I
    line = 15 mA; R7 = 68 kΩ  
    24.0  
    Gain variation with F=300 and 3400 Hz  
    frequency  
    △Gvf  
    reference  
    800Hz  
    to  
    Gain variation with Without R6;Iline=50mA;  
    dB  
    △GvT  
    ±0.2  
    temperature  
    reference to 25℃  
    output voltage  
    (RMS value)  
    Input impedence  
    of receiving  
    T
    amb=－25 and +75℃  
    V
    LN(rms)  
    THD = 10% line = 15 mA  
    I
    1.7  
    2.3  
    21  
    V
    −
    |Zi|  
    KΩ  
    amplifier  
    Gv  
    voltage gain from  
    IR to QR  
    29.5  
    24.5  
    31  
    26  
    32.5  
    27.5  
    dB  
    dB  
    I
    I
    line = 15 mA; R  
    line = 100 mA; R  
    L
    = 300 Ω  
    = 300 Ω  
    L
    Gain variation with F=300 and 3400 Hz  
    frequency  
    dB  
    △Gvf  
    ±0.2  
    reference  
    800Hz  
    to  
    Gain variation with Without R6;Iline=50mA;  
    dB  
    △GvT  
    ±0.2  
    temperature  
    Tamb=－25 and +75℃  
    reference to 25℃  
    V
    o(rms)  
    output  
    (RMS value)  
    voltage THD = 2%; sine wave drive;  
    R4 = 100 kΩ; Iline =15 mA;  
    =0 mA = 150 Ω  
    = 450 Ω  
    0.22  
    0.3  
    0.33  
    0.48  
    −
    −
    I
    p
    R
    R
    L
    V
    V
    L
    http://www.belling.com.cn  
    - 4 -  
    8/25/2006  
    Total 7 Pages  
    Wrote by 2006  
    BL1062A1  
    V
    o(rms)  
    output  
    (RMS value)  
    voltage  
    THD = 10%; R4 = 100 kΩ;  
    line =15 mA; R = 150 Ω  
    15  
    70  
    V
    dB  
    I
    L
    MIC- or MIC+ to MUTE=Low  
    LN  
    Voltage gain from  
    DTMT to QR  
    △G  
    △G  
    △G  
    V
    V
    V
    dB  
    dB  
    -17  
    R4=100kΩ; R  
    MUTE=Low  
    R6=110kΩ  
    L=300Ω  
    Controlling  
    the  
    -5.8  
    gain from IR to QR  
    and the gain from  
    MIC+,MIC- to LN  
    gain control range  
    (bewteen AGC and VEE  
    line=70mA  
    )
    I
    mA  
    mA  
    I
    I
    lineH  
    Hightest  
    current  
    maximum gain  
    Lowest  
    line  
    for  
    23  
    61  
    lineL  
    line  
    for  
    current  
    maximum gain  
    http://www.belling.com.cn  
    - 5 -  
    8/25/2006  
    Total 7 Pages  
    Wrote by 2006  
    BL1062A1  
    Fig2 Test circuit for defining BL1062A1 voltage gain of MIC+, MIC- and DTMF inputs  
    Fig3 Test circuit for defining BL1062A1 voltage gain of receiving amplifier  
    http://www.belling.com.cn  
    - 6 -  
    8/25/2006  
    Total 7 Pages  
    Wrote by 2006  
    BL1062A1  
    7. APPLICATION CIRCUITS  
    Fig4 Typical application of BL1062A1  
    http://www.belling.com.cn  
    - 7 -  
    8/25/2006  
    Total 7 Pages  
    Wrote by 2006  
    配单直通车
    BL1025产品参数
    型号:BL1025
    类别：Diodes
    配置：Dual
    Channel Polarity：P
    ESD：N
    PD(W)Max：0.3
    V(BR)DSS (V)Min：-60
    VGS (V)Max：±20
    ID(A)Max：-0.2
    IGSS(uA)Max：±0.1
    VGS(th) (V)Max：-2.5
    RDS(on)(mΩ) @ 25℃ 10VTyp：2400
    RDS(on)(mΩ) @ 25℃ 10VMax：4000
    RDS(on)(mΩ) @ 25℃ 4.5V Typ：2650
    RDS(on)(mΩ) @ 25℃ 4.5V Max：6000
    RDS(on)(mΩ) @ 25℃ 2.5V Typ：4500
    RDS(on)(mΩ) @ 25℃ 2.5V Max：1300
    AEC Qualified：NO
    最高工作温度：150
    最低工作温度：-55
    MSL等级：1
    生命周期：Active
    是否无铅：Yes
    符合Reach：Yes
    符合RoHS：Yes
    ECCN代码：EAR99
    Package Outlines：SOT-563
    •  
    • 供货商
    • 型号 *
    • 数量*
    • 厂商
    • 封装
    • 批号
    • 交易说明
    • 询价
  • 免费注册 忘记密码
    • 批量询价选中的记录已选中0条,每次最多15条。

    IC37:专业IC行业平台

    专业IC领域供求交易平台:提供全面的IC Datasheet资料和资讯，Datasheet 1000万数据，IC品牌1000多家。

    网站导航 Datasheet资料库 电子术语 电子百科
    服务中心 常见问题 委托交易 会员服务
    关于我们 公司简介 联系我们 免责申明

    产品索引：ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789

    深圳网络警察报警平台 公共信息安全网络监察 经营性网站备案信息 不良信息举报中心 工商网监电子标识 全国公安机关备案
    服务电话： 0755-32882616 0755-32882606 0755-32882608 0755-32882607 值班和投诉电话：13715251531 ©2004-2024 IC37网 版权所有：ic37.com 版权申明 公网安备44030402000606 粤ICP备13051289号-6
     复制成功！