Line capacitance measurement. Implement" />
參數(shù)資料
型號(hào): SI3220-G-FQR
廠商: Silicon Laboratories Inc
文件頁數(shù): 3/112頁
文件大小: 0K
描述: IC PROSLIC/CODEC DUAL 64TQFP
標(biāo)準(zhǔn)包裝: 1,250
系列: ProSLIC®
功能: 用戶線路接口概念(SLIC),CODEC
接口: GCI,PCM,SPI
電路數(shù): 2
電源電壓: 3.3V,5V
電流 - 電源: 65mA
功率(瓦特): 941mW
工作溫度: 0°C ~ 70°C
安裝類型: 表面貼裝
封裝/外殼: 64-TQFP
供應(yīng)商設(shè)備封裝: 64-TQFP(10x10)
包裝: 帶卷 (TR)
包括: 電池切換,BORSCHT 功能,DTMF 生成和解碼,F(xiàn)SK 音調(diào)生成,調(diào)制解調(diào)器和傳真音調(diào)檢測
Si3220/25 Si3200/02
100
Rev. 1.3
Not
Recommended
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Line capacitance measurement. Implemented like
the ac line impedance measurement test above, but
the frequency band of interest is between 1 kHz and
3.4 kHz. Knowing the synthesized two-wire
impedance of the Dual ProSLIC, the roll-off effect
can be used to calculate the ac line capacitance.
Ringing voltage verification. Verifies that the
desired ringing signal is correctly applied to the TIP/
RING pair and can be measured in the 8-bit monitor
ADC, which senses low-frequency signals directly
across T-R.
Idle channel noise measurement. Given any
transmission mode with no tone generated and the
hybrid balance filter turned off, the voice band
energy can be measured through the normal audio
path and read through the appropriate register.
Harmonic distortion measurement. Detects the
power content of a particular harmonic. It can be
implemented by programming two of the IIR
diagnostics filter stages to provide a notch at the
fundamental frequency and a peak at the harmonic
of interest. Performing this procedure on all relevant
harmonics individually and summing the results
provides the total harmonic distortion.
Intermodulation distortion measurement (two-
tone method). Measures the intermodulation
distortion product in the presence of two tones. It can
be implemented by programming the three IIR
diagnostic filter stages to provide two notches at the
two tone frequencies and a peak at the frequency of
interest.
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