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参数资料
| 型号： | GP2010 |
| 厂商： | Mitel Networks Corporation |
| 英文描述： | GPS Receiver RF Front End |
| 中文描述： | GPS接收机射频前端 |
| 文件页数： | 23/24页 |
| 文件大小： | 151K |
| 代理商： | GP2010 |
GP2010
8
Pin No.
Signal Name
Input/Output
Description
29
RF Input
Input
RF input.
The GPS RF input signal @ 1575.42MHz from an external
antenna with LNA and filter is connected to this pin via an
input-matching network (see fig.4).
33
O/P 1-
Output
Stage 1 mixer output @ 175.42MHz - inverse phase.
One of a balanced output from first stage IF mixer, to which
one input of an external balanced 175MHz bandpass filter is
connected. External dc biasing is required via an inductor
connected to VCC(RF) - the value of which is dependent on the
filter used.
34
O/P 1+
Output
Stage 1 mixer output @ 175.42MHz - true phase.
Second of a balanced output from first stage IF mixer, to which
the second input of an external balanced 175MHz bandpass
filter is connected. External dc biasing is required via an
inductor connected to VCC(RF) - the value of which is dependent
on the filter used.
35
VCC (2)
Input
Positive supply to the Stage 2 IF mixer.
36
I/P 2-
Input
Stage 2 mixer input @ 175.42MHz - inverse phase.
One of a balanced input to the second stage IF mixer, to which
one of the balanced signal outputs from the external 175MHz
bandpass filter is connected.
37
I/P 2+
Input
Stage 2 mixer input @ 175.42MHz - true phase.
Second of a balanced input to the second stage IF mixer, to
which the second of the balanced signal outputs from the
external 175MHz bandpass filter is connected.
38,39
VEE (IF)
Input
Negative supply to the Stage 2 IF mixer, and Stage 3 IF block.
40
O/P 2-
Output
Stage 2 mixer output @ 35.42MHz - inverse phase.
One of a balanced output from second stage IF mixer, to which
one input of an external balanced 35.42MHz bandpass filter is
connected. External dc biasing is required via an Inductor
connected to VCC. (See Note 3)
41
O/P 2+
Output
Stage 2 mixer output @ 35.42MHz - true phase.
Second of a balanced output from second stage IF mixer, to
which the second input of an external balanced 35.42MHz
bandpass filter is connected. External dc biasing is required
via an Inductor connected to VCC. (See Note 3)
42
VCC (3)
Input
Positive supply to the Stage 3 IF mixer.
43
I/P 3-
Input
Stage 3 mixer input @ 35.42MHz - inverse phase.
One of a balanced input to the third stage IF mixer, to which
one of the balanced signal outputs from the external 35.42MHz
bandpass filter is connected. (See Note 3)
44
I/P 3+
Input
Stage 3 mixer input @ 35.42MHz - true phase.
Second of a balanced input to the third stage IF mixer, to which
the second of the balanced signal outputs from the external
35.42MHz bandpass filter is connected. (See Note 3)
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