- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄383935 > TCM38C17IDL (Texas Instruments, Inc.) QComboE FOUR-CHANNEL QUAD PCM COMBO PDF資料下載
參數(shù)資料
| 型號(hào)： | 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)： | 18/22頁 |
| 文件大小： | 314K |
| 代理商： | TCM38C17IDL |
TCM38C17IDL
QCombo
FOUR-CHANNEL (QUAD) PCMCOMBO
SLWS040C – JUNE 1996 – REVISED OCTOBER 1999
18
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
Various TCM38C17IDL output configurations are detailed in the following paragraphs.
differential configuration
For connection to a transformer, the fully differential configuration is recommended to provide maximum
possible output, or voltage swing, to the primary of an attached transformer. Figure 9 shows the QCombo in a
fully-differential mode.
PWRO+
PWRO–
GSR
Vd
R1
R2
RL
VO+
VO–
Figure 9. Fully Differential Gain-Setting Configuration
PWRO+ and PWRO– are low-impedance complementary outputs. The total output available for the output load
(R
L
) is then V
D
= V
O+
– V
O–
. R1 and R2 form a gain-setting resistor network with a center tap connected to the
GSR input.
R1 + R2 should be greater than 10 k
and less than 100 k
because the parallel combination R1 + R2 and R
L
sets the total loading. The total parasitic capacitance of the GSR input, along with the parallel combination of
R1 and R2, define a time constant that must be minimized to avoid inaccuracies in the gain calculations.
The resistor gain control actually consists of attenuating the full differential output voltage. The equation to
determine the value of the attenuation constant is given in equation 1.
A
1
4
(R1
(R1
R2)
R2)
which can also be expressed as shown in equation 2.
A
R1
R2
4(R2
R1
4)
where A = attenuation constant
Depending on the values of gain setting resistors R1 and R2, the attenuation constant (A) can have a value of
0.25 to unity (1), or approximately 12 dB of voltage adjustment.
(1)
(2)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TCM38C17IDLDL | QComboE FOUR-CHANNEL QUAD PCM COMBO |
| TCM38C17 | () |
| TCM809JELB713 | 3-Pin Microcontroller Reset Monitors |
| TCM809JENB713 | 3-Pin Microcontroller Reset Monitors |
| TCM809JVLB713 | 3-Pin Microcontroller Reset Monitors |
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: |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。