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參數(shù)資料
| 型號： | UAA1570HL |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 通信及網(wǎng)絡 |
| 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 |
| 文件頁數(shù)： | 3/76頁 |
| 文件大小： | 890K |
| 代理商： | UAA1570HL |
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1999 May 10
3
Philips Semiconductors
Product specification
Global Positioning System (GPS) front-end
receiver circuit
UAA1570HL
1
FEATURES
Complete single-chip programmable
double-superheterodyne C/A-code GPS receiver
Programmable high IF frequencies supporting
wideband/P-code GPS and Global Navigation Satellite
System (GLONASS) applications
Supports frequency plans with a 2nd IF of
4
×
f
0
(1.023 MHz) = 4.092 MHz
48-pin LQFP package
40 to +85
°
C operating temperature range
2.7 V minimum supply voltage
Low DC power consumption [57 mA typical with both
Low-Noise Amplifiers (LNAs) active]
Power-down mode (<900
μ
A)
Typical receiver noise figure at 1.57542 GHz: 4.5 dB
Typical phase noise
72 dBc/Hz at 10 kHz offset
Simple microstrip LNA1/2 and first mixer matching
Single pin VCO with external varactor and resonator
Digital Phase Locked Loop (DPLL) synthesizer with
programmable VCO, 2nd Local Oscillator (LO) and
reference dividers
3-bit synthesizer and power-down control input
Reference and independent sample clock input with
internal squaring
1-bit amplitude quantized and time sampled TTL/CMOS
compatible output driver
High active gain supporting SAW filter applications
Configurable for external first LNA applications.
2
GENERAL DESCRIPTION
The UAA1570HL is a complete single-chip
double-superheterodyne receiver front-end intended for
GPS and GLONASS navigation systems. The IC includes
a programmable on-chip DPLL synthesizer, VCO with
external varactor and resonator, a 1-bit amplitude
quantizer and a time sampled TTL/CMOS compatible
SIGN output bit driver. It can be used with either an active
or passive antenna system by disabling or enabling the
on-chip LNAs and is ideally suited for low power GPS
receiver applications because of its 3 V supply and the
power management features through control pins.
Programmable prescaler controls provide the flexibility of
using different frequency schemes.
The UAA1570HL is optimized to provide SIGN bit data to
the companion Philips part, the SAA1575HL baseband
digital signal processor. The SAA1575HL can provide the
sample clock input to the UAA1570HL by dividing a
TTL/CMOS level reference clock signal down to a
programmable sampling clock output frequency. Both ICs
can also be used independently.
The UAA1570HL is supplied in a low profile, 48-pin LQFP
package for excellent Radio Frequency (RF) performance
and small size.
3
ORDERING INFORMATION
TYPE
NUMBER
PACKAGE
NAME
DESCRIPTION
VERSION
UAA1570HL
LQFP48
plastic low profile quad flat package; 48 leads; body 7
×
7
×
1.4 mm
SOT313-2
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