參數(shù)資料
型號: STB5600
廠商: 意法半導(dǎo)體
英文描述: GPS RF FRONT-END IC
中文描述: GPS射頻前端IC
文件頁數(shù): 5/10頁
文件大小: 72K
代理商: STB5600
ELECTRICALCHARACTERISTICS (Continued)
OUTPUT SECTION
Symbol
Parameter
Note
Min.
Typ.
Max.
Unit
I
VCCDRIVE
Supply Current
V
VCCDRIVE
= 3 V
8
mA
V
OH
High output voltage
Vp = V
VCCDRIVE
= 3 V
Vp-0.4
Vp
V
V
OL
t
r
Low output voltage
Vn = GNDDRIVE
Vn
Vn+0.4
V
Rise Time
C
LOAD
= 7 pF
6
ns
t
f
Fall Time
C
LOAD
= 7 pF
2
ns
APPLICATION CIRCUIT
A typical application circuit is shown in figure 1. The RF input from the antenna downlead is fed via a
ceramic filter and matching circuit to the RF+,RF- pins. The external LNA in the antenna should have
between 10 and 35dB of amplifier gain, so thenoise measured in a one MHzbandwidth should be
-114dBm forkTB in 1 MHz
+ 2dB LNA noise figure
+10/35 dB LNA gain (net)
Total -102/77dBm at connector.
Allowing 2dB for filter loss, -104/-79is availableat the matchingcircuit.
Fig. 1 Typical Application Circuit
STB5600
5/10
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