參數(shù)資料
型號(hào)： 73M1906B-IVTR/F
廠商： Maxim Integrated Products
文件頁數(shù)： 54/88頁
文件大?。?/td> 0K
描述： MICRODAA SET FXO OF VOIP 20TSSOP
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 2,000
系列： *
73M1866B/73M1966B Data Sheet
DS_1x66B_001
58
Rev. 1.6
TX Level
Analog Gain
Digital Gain
Ana+Dig
dBm
TxBst DAA1 DAA0 dB
TXDG
dB
-17
0
1
-8
1001_1010
-8.75
-16.75
-16
0
1
-8
1010_0110
-7.75
-15.75
-15
0
1
-8
1010_1110
-6.75
-14.75
-14
0
1
-8
0100_0010
-5.75
-13.75
-13
0
1
-8
0100_1010
-4.75
-12.75
-12
0
1
-8
0101_0010
-3.75
-11.75
-11
0
1
-8
0101_1010
-2.75
-10.75
-10
0
1
-8
0110_0110
-1.75
-9.75
-9
0
1
-8
0110_1110
-0.75
-8.75
-8
0
1
-8
0000_0010
0.25
-7.75
-7
0
1
-8
0000_1010
1.25
-6.75
-6
0
1
0
-4
0110_0110
-1.75
-5.75
-5
0
1
0
-4
0110_1110
-0.75
-4.75
-4
0
1
0
-4
0000_0010
0.25
-3.75
-3
0
1
0
-4
0000_1010
1.25
-2.75
-2
1
-2
0000_0010
0.25
-1.75
-1
0
1
0
0110_1110
-0.75
0
1
0
0000_0010
0.25
1
0
1
0
0000_1010
1.25
2
1
0
2
0000_0010
0.25
2.25
3
0
3
0000_0010
0.25
3.25
4
0
3
0000_1010
1.25
4.25
5
1
0
6
0110_1110
-0.75
5.25
6
1
0
6
0000_0010
0.25
6.25
Note (1)
1
0
6
0000_1010
1.25
7.25
Note (1)
1
0
6
0001_0010
2.25
8.25
Note (1)
1
0
6
0001_1010
3.25
9.25
Note (1)
1
0
6
0010_0110
4.25
10.25
Note (1)
1
0
6
0010_1110
5.25
11.25
Note (1)
1
0
6
0011_0110
6.25
12.25
Note 1. Tx Data is assumed small enough that the combination of Tx Data and TXDG is less than 1.25 dBm.
8.8.1.2 Receive Gain Scaling
On the receive side, a 0 dBm receive signal on the line results in ~0 dBm at the PCM interface.
Means is provided to adjust receive signal path gain by use of a digital gain stage. This gain value is
controlled by Register 0x09[7:0] (RXDG). The gain values are explained in Table 33.
The two RXG bits (Register 0x14[1:0]) control the value of the receiver analog gain. The RXG bits must
be set to 10 to enable 0 dB gain in the receive path.
For the best S/N performance it is recommended to use a gain value up front in the analog domain. The
digital control should be used to fine-tune the receiver signal path gain.
When the received line signal exceeds a voltage level greater than specified by ITU-T
Recommendation G.711, the receive gain must be reduced to prevent saturation and clipping within
the receive signal processing path.
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參數(shù)描述
73M1906-IVT/F 制造商:TERIDIAN 功能描述:
73M1912-IM/F 功能描述:電信線路管理 IC MicroDAA Chip Set Line Side 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
73M1912-IMR/F 功能描述:電信線路管理 IC MicroDAA Chip Set Line Side 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
73M1912-IVT/F 功能描述:電信線路管理 IC MicroDAA Chip Set Line Side 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
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