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參數(shù)資料
| 型號： | 73M1966B-DB-C |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 46/88頁 |
| 文件大?。?/td> | 0K |
| 描述： | BOARD DEMO 73M1966B CBL 20TSSOP |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | * |
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73M1866B/73M1966B Data Sheet
DS_1x66B_001
50
Rev. 1.6
8.6.3
73M1x66B Transmit Spectrum
Figure 28 shows the transmit spectrum observed on the line from dc to 32 kHz for a sample frequency
(Fs) of 8 kHz. The transmit signal is band-limited (by default) to Fs/2=4 kHz and is flat (with 0.2 dB ripple)
to 3.65 kHz and is marked as Txdb(x) in the figure. All frequencies double for a 16 kHz sample rate
Also shown, and marked as signaldb(x), is the baseband signal from 1 kHz to 2 kHz for an 8 kHz sample
rate (2 kHz to 4 for a 16 kHz sample rate). The aliases of signaldb(x) are shown as aliasdb(x) and are
attenuated significantly with better than 80 dB attenuation at 8 kHz, better than 60 dB at 16 kHz, better
than 100 dB at 24 kHz, etc for an 8 kHz sample rate and the frequencies double for a 16 kHz sample rate.
0
4
8
12
16
20
24
28
32
140
120
100
80
60
40
20
0
20
Transmit Spectrum
Freq
S
pe
ct
rum
(dB)
20
140
signaldb x
( )
aliasdb x
( )
Txdb x
( )
32
0
16x
Figure 28: Transmit Spectrum to 32 kHz for an 8 kHz Sample Rate
8.7
Receive Path Signal Processing
8.7.1
General Description
In the receive path, the signal from the telephone line is input to the anti-aliasing filter and passed through
a selectable low pass (notch) filter, which can be used to attenuate in-band Billing Tones. The analog
signal is digitized by a sigma-delta analog to digital converter. The resulting high frequency one-bit data
stream is decimated and sent to the Host-Side Device via the barrier. Another decimation FIR filter in the
Host-Side Device filters the received data and sends it to the host DSP for processing.
The response of the receive path, in conjunction with the decimation filter in the Host-Side Device,
provides a flat pass-band response to 3.342 kHz at an 8 kHz sample rate or 6.744 kHz with a 16 kHz
sample rate with 0.2 dB ripple. The 3 dB bandwidth is 3.58 kHz at 8kHz sample rate or 7.226 kHz at a
16 kHz sample rate. . The one-bit data stream is 1.536 Mbps for an 8 kHz sample rate or 3.072 Mbps
with a 16 kHz sample rate.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 73M1966B-EVM | 功能描述:網(wǎng)絡(luò)開發(fā)工具 73M1966 Demo Brd & MotherBrd 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 |
| 73M1966B-IM/F | 制造商:Maxim Integrated Products 功能描述: |
| 73M1966B-KEYCHN | 功能描述:網(wǎng)絡(luò)開發(fā)工具 Keychain Eval Module 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 |
| 73M1AR0015F | 功能描述:RES 0.0015 OHM 1% 1W 1206 制造商:cts resistor products 系列:73M1A 包裝:帶卷（TR） 零件狀態(tài):在售 電阻值:1.5 MOhms 容差:±1% 功率（W）:1W 成分:金屬薄膜 特性:電流檢測 溫度系數(shù):±100ppm/°C 工作溫度:-55°C ~ 155°C 封裝/外殼:1206（3216 公制） 供應(yīng)商器件封裝:1206 大小/尺寸:0.126" 長 x 0.063" 寬（3.20mm x 1.60mm） 高度 - 安裝（最大值）:0.035"（0.90mm） 端子數(shù):2 故障率:- 標(biāo)準(zhǔn)包裝:4,000 |
| 73M1AR001F | 功能描述:RES 0.001 OHM 1% 1W 1206 制造商:cts resistor products 系列:73M1A 包裝:帶卷（TR） 零件狀態(tài):在售 電阻值:1 MOhms 容差:±1% 功率（W）:1W 成分:金屬薄膜 特性:電流檢測 溫度系數(shù):±100ppm/°C 工作溫度:-55°C ~ 155°C 封裝/外殼:1206（3216 公制） 供應(yīng)商器件封裝:1206 大小/尺寸:0.126" 長 x 0.063" 寬（3.20mm x 1.60mm） 高度 - 安裝（最大值）:0.035"（0.90mm） 端子數(shù):2 故障率:- 標(biāo)準(zhǔn)包裝:4,000 |
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