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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)： | 19/22頁 |
| 文件大?。?/td> | 314K |
| 代理商： | TCM38C17IDL |
TCM38C17IDL
QCombo
FOUR-CHANNEL (QUAD) PCMCOMBO
SLWS040C – JUNE 1996 – REVISED OCTOBER 1999
19
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
differential configuration (continued)
Maximum output (A = 1) can be obtained by maximizing R1 and minimizing R2. This can be done by letting
R1 = infinity and R2 = 0
(connect GSR to PWRO–), as shown in Figure 10. Referring to the transmit and
receive gain and dynamic range specifications, a maximum output of approximately 8 Vpp can be expected in
this configuration with a load
≥
600
. See the maximum analog output section for more detail on the digital input
required for maximum analog output.
PWRO+
PWRO–
GSR
RL
VO+
VO–
Figure 10. Fully Differential Maximum Gain-Setting Configuration (A = 1)
Figure 11 illustrates the QCombo with the resistor gain-control setting for an attenuation of A = 0.625.
PWRO+
PWRO–
GSR
10 k
RL
VO+
VO–
2.5 k
Figure 11. Fully Differential Mid-Gain-Setting Configuration (A = 0.625)
Shown in Figure 12, a minimum output (A = 0.25 dB) can be obtained by letting R1 = 0
(connect GSR to
PWRO+), and R2 = infinity.
PWRO+
PWRO–
GSR
RL
VO+
VO–
Figure 12. Fully Differential Minimum-Gain-Setting Configuration (A = 0.25)
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