- 您现在的位置：买卖IC网 > PDF目录10994 > 73M1916-IMR/F (Maxim Integrated Products)MICRODAA SET FXO OF VOIP 32-QFN PDF资料下载
参数资料
| 型号： | 73M1916-IMR/F |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 53/88页 |
| 文件大小： | 0K |
| 描述： | MICRODAA SET FXO OF VOIP 32-QFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 系列： | MicroDAA™ |
| 功能： | 数据存取装置（DAA） |
| 接口： | PCM，SPI |
| 电路数： | 1 |
| 电源电压： | 3 V ~ 3.6 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-VFQFN 裸露焊盘 |
| 供应商设备封装： | 32-QFN 裸露焊盘（5x5） |
| 包装： | 带卷 (TR) |
| 包括： | * |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页当前第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页
DS_1x66B_001
73M1866B/73M1966B Data Sheet
Rev. 1.6
57
8.8.1
Transmit and Receive Level Control
Refer to Section 8.5 for information about 73M1x66B levels.
8.8.1.1 Transmit Gain Scaling
The first gain stage in the transmit signal path is the digital gain whose value is controlled by writing to
Register 0x08 (TXDG). The second gain stages are the analog gains that are controlled by Register
0x14[7] (TXBST) and Register 0x14[6:5] (DAA). As a general rule to prevent clipping of the analog gain
stages, it is important to choose a value of the digital gain such that the transmit data after multiplied by
TXDG does not exceed +1.25 dBm. So for correct use of the gain controls the appropriate mix of digital
and analog settings must be used. Generally speaking, for best S/N performance, it is advisable to make
the digital words, after digital gain scaling, as large as possible without going over the +1.25 dBm limit.
Example:
If +2 dBm transmit level is desired for the case where the maximum input is 0 dBm:
Set analog gain to +3 dB (i.e. TXBST and DAA = 0) add attenuation of –1 dB by setting TXDG to
01101100 (-6 + 3.5 + 1 + 0.5 = -1); therefore, +3 - 1 = +2. Note in this case any digital gain could
cause clipping at high input levels in the analog circuitry.
Table 34 lists transmit level analog gain adjustment settings based upon the values of TXBST and DAA.
Table 34: Transmit Gain Control
TXBST
0x14[7]
DAA1
0x14[6]
DAA0
0x14[5]
Gain,
Nom. (dB)
0
+3.0
0
1
0.0
0
1
0
-4.0
0
1
-8.0
1
0
+6.0
1
0
1
+6.0
1
0
+2.0
1
-2.0
Table 35 shows a recommended gain settings for various transmit levels. With 0 dBm of Tx Data and
default setting of DAA1:0 = 01, Txbst=0, TXDG=00h, the transmit level is slightly off at –0.25 dBm.
TXDG=00000010 is required to achieve 0 dBm transmit level. For Tx level > 6 dBm, Tx Data is assumed
less than 0 dBm such that the product of Tx Data and TXDG is less than 1.25 dBm.
Table 35: Recommended Gain Setting
TX Level
Analog Gain
Digital Gain
Ana+Dig
dBm
TxBst DAA1 DAA0 dB
TXDG
dB
-26
0
1
-8
1100_0010
-17.75
-25.75
-25
0
1
-8
1100_1010
-16.75
-24.75
-24
0
1
-8
1101_0010
-15.75
-23.75
-23
0
1
-8
1101_1010
-14.75
-22.75
-22
0
1
-8
1110_0110
-13.75
-21.75
-21
0
1
-8
1110_1110
-12.75
-20.75
-20
0
1
-8
1000_0010
-11.75
-19.75
-19
0
1
-8
1000_1010
-10.75
-18.75
-18
0
1
-8
1001_0010
-9.75
-17.75
相关PDF资料 |
PDF描述 |
|---|---|
| 73M1906B-IMR/F | MICRODAA SET FXO OF VOIP 32-QFN |
| VI-B0P-IY-F1 | CONVERTER MOD DC/DC 13.8V 50W |
| 73M1906B-IVTR/F | MICRODAA SET FXO OF VOIP 20TSSOP |
| VI-2VX-IY-F4 | CONVERTER MOD DC/DC 5.2V 50W |
| VI-2VX-IY-F2 | CONVERTER MOD DC/DC 5.2V 50W |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 73M1916-IVT/F | 功能描述:电信线路管理 IC DAA-FXO VOLP System Line Side RoHS:否 制造商:STMicroelectronics 产品:PHY 接口类型:UART 电源电压-最大:18 V 电源电压-最小:8 V 电源电流:30 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:VFQFPN-48 封装:Tray |
| 73M1916-IVTR/F | 功能描述:电信线路管理 IC DAA-FXO VOLP System Line Side RoHS:否 制造商:STMicroelectronics 产品:PHY 接口类型:UART 电源电压-最大:18 V 电源电压-最小:8 V 电源电流:30 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:VFQFPN-48 封装:Tray |
| 73M1922-DB | 功能描述:网络开发工具 73M1922 Demo Brd RoHS:否 制造商:Rabbit Semiconductor 产品:Development Kits 类型:Ethernet to Wi-Fi Bridges 工具用于评估:RCM6600W 数据速率:20 Mbps, 40 Mbps 接口类型:802.11 b/g, Ethernet 工作电源电压:3.3 V |
| 73M1966B-DB | 功能描述:网络开发工具 73M1966B Demo Brd RoHS:否 制造商:Rabbit Semiconductor 产品:Development Kits 类型:Ethernet to Wi-Fi Bridges 工具用于评估:RCM6600W 数据速率:20 Mbps, 40 Mbps 接口类型:802.11 b/g, Ethernet 工作电源电压:3.3 V |
| 73M1966B-DB-C | 功能描述:网络开发工具 73M1966B Demo Brd w/GUI Cable RoHS:否 制造商:Rabbit Semiconductor 产品:Development Kits 类型:Ethernet to Wi-Fi Bridges 工具用于评估:RCM6600W 数据速率:20 Mbps, 40 Mbps 接口类型:802.11 b/g, Ethernet 工作电源电压:3.3 V |
发布紧急采购，3分钟左右您将得到回复。