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參數(shù)資料
| 型號： | TQ5135 |
| 英文描述： | Analog IC |
| 中文描述： | 模擬IC |
| 文件頁數(shù)： | 19/22頁 |
| 文件大?。?/td> | 261K |
| 代理商： | TQ5135 |
TQ5135
Data Sheet
For additional information and latest specifications, see our website:
www.triquint.com
19
7. Redo GIC Components
:
After obtaining the optimumnetwork between the SAW and
Mxer RF input, most likely Idd will have changed slightly.
Determne a new GIC resistor to bring Idd to the desired
value.
8.
Double Check IF Match
After any change which affects IF stage current it is important
to recheck the IF output match. This is especially true when
matching down to 50ohms, since the match is more sensitive.
A match to a 1000ohmfilter will not be as sensitive. The LO
must be turned ON during the test.
9. Test the TQ5135 Cascade:
Finally after the LNA and Mxer are properly tuned the device
performance as a whole should be measured.
AMPS Mode Application with External Switching
:
The TQ5135 is a single IF output low-band CDMA receiver.
Because it uses a straightforward design it achieves very high
performance for a device drawing 20-25mA.
However, it is possible to add dual IF output (e.g.
CDMA/AMPS) capability externally to the device using an
inexpensive switch which allows switching between two
different IF filters. More information can be found from
separate application note.
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