欧美成人免费电影,国产欧美一区二区三区精品酒店,精品国产a毛片,色网在线免费观看

參數資料
型號: 73M1903-IMR/F
廠商: MAXIM INTEGRATED PRODUCTS INC
元件分類: 消費家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PQCC32
封裝: ROHS COMPLIANT, QFN-32
文件頁數: 16/47頁
文件大小: 541K
代理商: 73M1903-IMR/F
DS_1903_032
73M1903 Data Sheet
Rev. 2.1
23
5.2
Transmit Power - dBm
To calculate the analog output power, the peak voltage is calculated and the peak to rms ratio (crest
factor) must be known. The following formula is used to calculate the output power, in dBm referenced to
600
Ω.
Pout (dBm) = 10 * log [ ( Vout (V) / cf )
2 / ( 0.001 * 600 ) ]
The following example demonstrates the calculation of the analog output power given a 1.2 kHz FSK tone
(sine wave) with a peak code word value of 11,878 sent out by the DSP.
The differential output voltage at TXAP-TXAN will be:
With FreqFctr = 1.02, (See Figure 10)
Vout (V) = 2 * (11,878/32,767) * 0.6640625 * 0.8889 * 1.36 * 1.0 * 1.4454 * 1.02 = 0.841 Vpk.
The output signal power will be:
Pout (dBm) = 10 * log [(0.841 / 1.41)
2 / (0.001 * 600) ] = - 2.29 dBm.
Table 13: Peak to RMS Ratios for Various Modulation Types
Transm it Type
Crest Factor
Max Line Level
V.90
4.0
-12 dBm
QAM
2.31
-9 dBm
DPSK
1.81
-9 dBm
FSK
1.41
-9 dBm
DTMF
1.99
-5.7 dBm
5.3
Control Register (CTRL1): Address 00h
Reset State 08h
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
ENFE
Unused
TXBST1
TXBST0
TXDIS
RXG1
RXG0
RXGAIN
ENFE
1 = Enable the digital filters and analog front end.
0 = Disable the analog blocks shut off the clocks to the digital and analog receive/transmit
circuits.
TXBST1
1 = Add a gain of 1.335 dB (16.6%) to the transmitter; also the common mode voltage of the
transmit path is increased to 1.375 V. This is intended for enhancing DTMF transmit
power only and should not be used in data mode.
0 = No gain is added
TXBST0
1 = A gain of 1.65 dB (21%) is added to the transmitter
0 = The gain of the transmitter is nominal
TXDIS
1 = Tri-state the TXAP and TXAN pins, provides a bias of VBG into 80 k
for each output pin
RXG1:0
These bits control the receive gain as shown in Table 12.
RXGAIN
1 = Increase the gain of the receiver by 20 dB.
相關PDF資料
PDF描述
73M1903-IVT/F SPECIALTY CONSUMER CIRCUIT, PDSO20
73M1903-IVTR/F SPECIALTY CONSUMER CIRCUIT, PDSO20
73M1903C-IM/F SPECIALTY CONSUMER CIRCUIT, PQCC32
73M1903C-IMR/F SPECIALTY CONSUMER CIRCUIT, PQCC32
73M1903C-IM SPECIALTY CONSUMER CIRCUIT, QCC32
相關代理商/技術參數
參數描述
73M1903-IVT/F 功能描述:IC MODEM AFE V.22BIS 20-TSSOP RoHS:是 類別:集成電路 (IC) >> 數據采集 - 模擬前端 (AFE) 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 位數:- 通道數:2 功率(瓦特):- 電壓 - 電源,模擬:3 V ~ 3.6 V 電壓 - 電源,數字:3 V ~ 3.6 V 封裝/外殼:32-VFQFN 裸露焊盤 供應商設備封裝:32-QFN(5x5) 包裝:帶卷 (TR)
73M1903-IVTR/F 功能描述:IC MODEM AFE V.22BIS 20-TSSOP RoHS:是 類別:集成電路 (IC) >> 數據采集 - 模擬前端 (AFE) 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 位數:- 通道數:2 功率(瓦特):- 電壓 - 電源,模擬:3 V ~ 3.6 V 電壓 - 電源,數字:3 V ~ 3.6 V 封裝/外殼:32-VFQFN 裸露焊盤 供應商設備封裝:32-QFN(5x5) 包裝:帶卷 (TR)
73M1906B-IM/F 功能描述:電信線路管理 IC DAA-FXO VOLP System Host Side RoHS:否 制造商:STMicroelectronics 產品:PHY 接口類型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray
73M1906B-IM/F1 功能描述:電信線路管理 IC RoHS:否 制造商:STMicroelectronics 產品:PHY 接口類型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray
73M1906B-IMR/F 功能描述:電信線路管理 IC DAA-FXO VOLP System Host Side RoHS:否 制造商:STMicroelectronics 產品:PHY 接口類型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray
主站蜘蛛池模板: 水富县| 肃北| 西畴县| 卢氏县| 福建省| 阿克苏市| 新宁县| 赤水市| 长武县| 澄城县| 黔西县| 吉安市| 石城县| 崇义县| 犍为县| 错那县| 成安县| 石阡县| 田东县| 清涧县| 彭山县| 铜川市| 友谊县| 莱西市| 邹平县| 沅江市| 金华市| 保康县| 巢湖市| 延边| 文安县| 颍上县| 拉萨市| 绿春县| 灵寿县| 定结县| 新化县| 台东市| 图片| 五家渠市| 安康市|