參數(shù)資料
型號: 73M1822-IMR/F
廠商: Maxim Integrated Products
文件頁數(shù): 48/82頁
文件大?。?/td> 0K
描述: MICRODAA VOICE DATA/FAX 42-QFN
產(chǎn)品培訓(xùn)模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝: 2,500
系列: MicroDAA™
應(yīng)用: 傳真,調(diào)制解調(diào)器,尋呼機
接口: 串行
電源電壓: *
封裝/外殼: 42-VFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝: 42-QFN(8x8)
包裝: 帶卷 (TR)
安裝類型: 表面貼裝
73M1822/73M1922 Data Sheet
DS_1x22_017
52
Rev. 1.6
9
Signal Processing
9.1
Transmit Path Signal Processing
9.1.1
General Description
In the transmit path, data is first sent by the host DSP through a serial interface to the 73M1822 / 73M1922
then interpolated by a transmit interpolation filter, serialized and transmitted across to the Line-Side Device,
which is floating relative to the Host-Side Device earth ground. The data received on the Line-Side Device
is then de-serialized and digitally sigma-delta modulated to a one-bit data stream of 1.536 Mbps (for a
sample frequency of 8 kHz). The signal is further filtered first by a switched capacitor filter and then a
continuous anti-aliasing circuit.
The frequency response and bandwidth of the transmit path is dependent on the sampling frequency (Fs).
Figure 22 and Figure 23 show the normalized frequency response of the transmit path. For Fs = 8 kHz, the
0.2 dB pass-band ripple frequency is from DC to 3.422 kHz. The 3 dB bandwidth is 3.65 kHz.
9.1.2
Total Transmit Path Response
0
1
2
3
4
5
6
7
8
100
90
80
70
60
50
40
30
20
10
0
10
Trans mit Path Overall Frequency Res pons e
Freq(kHz)
G
ai
n(dB)
10
100
comp osite x
( )
8
0
x 16
com
iplo
xou
Figure 25: Transmit Path Overall Frequency Response to Fs (8 kHz)
0
0.5
1
1.5
2
2.5
3
3.5
4
1
0.8
0.6
0.4
0.2
0
0.2
0.4
0.6
0.8
1
Trans mit Pas s band Res pons e
Freq(kHz)
G
ai
n(dB)
1.
1.0
comp osite x
( )
4
0
x 16
Figure 26: Pass-Band Response of the Transmit Path
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73M1866B-IMR/F 功能描述:電信線路管理 IC MicroDAA w/PCM Highway RoHS:否 制造商:STMicroelectronics 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray
73M1866B-KEYCHN 功能描述:網(wǎng)絡(luò)開發(fā)工具 73M1866B Keychain Brd RoHS:否 制造商:Rabbit Semiconductor 產(chǎn)品:Development Kits 類型:Ethernet to Wi-Fi Bridges 工具用于評估:RCM6600W 數(shù)據(jù)速率:20 Mbps, 40 Mbps 接口類型:802.11 b/g, Ethernet 工作電源電壓:3.3 V