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參數(shù)資料
| 型號： | TCM38C17IDL |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | QComboE FOUR-CHANNEL QUAD PCM COMBO |
| 中文描述： | QComboE四通道的Quad的PCM組合 |
| 文件頁數(shù)： | 17/22頁 |
| 文件大?。?/td> | 314K |
| 代理商： | TCM38C17IDL |
TCM38C17IDL
QCombo
FOUR-CHANNEL (QUAD) PCMCOMBO
SLWS040C – JUNE 1996 – REVISED OCTOBER 1999
17
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PRINCIPLES OF OPERATION
receive operation
The TCM38C17IDL receive operation is described in the following paragraphs.
receive filter
The receive filters provide pass-band flatness and stopband rejection that fulfills both the AT&T D3/D4
specification and CCITT recommendation G.712. The filter contains the required compensation for the (sin x)/x
response of such decoders.
output amplifier
The QCombo incorporates a versatile analog output power amplifier than can drive transformer hybrids or
low-impedance loads directly in either a single-ended or differential configuration. The QCombo output stage
allows for volume control (in the differential mode) by connection of a resistor divider chain to the output
terminals of the device. The inverting operational amplifier can drive a 600
load in parallel with 100 pF. Figure 8
is a representation of the internal structure of the output amplifier.
_
+
External
DAC
PWRO–
PWRO+
GSR
RF
Internal
_
+
_
+
R1
R2
RINV
RINV
RGSR1
RGSR2
Unity Gain
Inverter
AREF
AREF
Figure 8. Output Amplifier Architecture
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TCM38C17IDLDL | 制造商:TI 制造商全稱:Texas Instruments 功能描述:QComboE FOUR-CHANNEL QUAD PCM COMBO |
| TCM38C17IDLR | 制造商:Texas Instruments 功能描述:Audio Codec 1ADC / 1DAC 48-Pin SSOP T/R |
| TCM4110 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:PCM U-LOW COMPANDING CODES |
| TCM4205J4 | 制造商:Texas Instruments 功能描述: |
| TCM4-23-2+ | 制造商:MINI C 功能描述: |
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