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參數(shù)資料
| 型號(hào)： | UAA1570HL |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 通信及網(wǎng)絡(luò) |
| 英文描述： | Global Positioning System (GPS)baseband processor(通用定位系統(tǒng)基帶處理器) |
| 中文描述： | SPECIALTY TELECOM CIRCUIT, PQFP48 |
| 封裝： | PLASTIC, SOT-313, LQFP-48 |
| 文件頁(yè)數(shù)： | 9/76頁(yè) |
| 文件大小： | 890K |
| 代理商： | UAA1570HL |
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1999 May 10
9
Philips Semiconductors
Product specification
Global Positioning System (GPS) front-end
receiver circuit
UAA1570HL
COMP
40
depends on
VCO
application
depends on
VCO
application
Charge pump phase frequency detector output:
the PLL loop
filter is connected in shunt and close proximity to this pin. The
PLL loop filter tuning control voltage should be routed to the
external VCO varactor circuit using minimal trace lengths in
complete isolation from all potential coupling sources.
this pin provides additional RF/IF shielding and has to be
connected to ground
this pin provides additional RF/IF shielding and has to be
connected to ground
LNA1 power supply:
DC operation range 2.7 to 5 V; use close
proximity RF decoupling to pins 44, 46 and 47.
LNA1 ground 1:
minimize RF ground inductance
LNA1 input:
use external RF AC coupling
LNA1 bias circuit ground:
minimize RF ground inductance
LNA1 ground 2:
minimize RF ground inductance
LNA1 output:
use external RF AC coupling. The DC voltage is
approximately 1.3 V below the V
CCA(LNA1)
supply on pin 43.
P41GND
41
0
0
P42GND
42
0
0
V
CCA(LNA1)
43
2.7
5
LNA1GND1
LNA1IN
BIASGND1
LNA1GND2
LNA1OUT
44
45
46
47
48
0
0.815
0
0
1.48
0
0.807
0
0
3.629
SYMBOL
PIN
PIN VOLTAGE
TYPICAL VALUES (V)
DESCRIPTION
V
CC
= 2.7 V
V
CC
= 5 V
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