參數(shù)資料
型號(hào)： MAX2745
廠商： Maxim Integrated Products, Inc.
英文描述： Single-Chip Global Positioning System Receiver Front-End
中文描述： 單芯片、全球定位系統(tǒng)前端下變頻器
文件頁(yè)數(shù)： 3/9頁(yè)
文件大小： 410K
代理商： MAX2745
M
Single-Chip Global Positioning System
Receiver Front-End
_______________________________________________________________________________________
3
Note 1:
At T
A
= +25
°
C, min/max limits are guaranteed by production test.
Note 2:
At T
A
= -40
°
C, min/max limits are guaranteed by design and characterization.
Note 3:
At T
A
= +25
°
C and +85
°
C, min/max limits are guaranteed by production test.
AC ELECTRICAL CHARACTERISTICS (continued)
(MAX2745 EV kit, V
DD
= +2.4V to +3.6V, SHDN = GND, T
A
= -40
°
C to +85
°
C. Typical values are at V
DD
= +3.0V and T
A
= +25
°
C,
unless otherwise noted.)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
SYNTHESIZER
Fundamental frequency crystal
3rd overtone crystal
16.368
32.736
0.4
Crystal Input Frequency
MHz
Charge-Pump Current
mA
f
OFFSET
= 10kHz offset,
BW
LOOP
= 70kHz
f
OFFSET
= 1MHz offset,
BW
LOOP
= 70kHz
BW
LOOP
= 70kHz
(Notes 2, 3)
(Notes 2, 3)
-81
Phase Noise
-104
dBc/Hz
Maximum PLL Spur
VCO Tuning Frequency Range
VCO Tuning Gain
IF STAGE
IF Stage Gain
Dynamic Range IF Stage Gain
Bandpass Filter 1dB Corner
Frequency
Bandpass Filter 3dB Bandwidth
Bandpass Filter 60dB High-Side
Rejection
Bandpass Filter 60dB Low-Side
Rejection
Image Rejection
In-Band Ripple
AGC Loop Lock Time
-39
210
210
dBc
MHz
MHz/V
150
150
270
310
VGA set at maximum gain
80
56
3.1
5.1
2.0
dB
dB
Low-frequency corner
High-frequency corner
MHz
MHz
6.6
MHz
1.6
MHz
17
1
1
dB
dB
ms
Typical Operating Characteristics
(MAX2745 EV kit, V
DD
= +3.0V, SHDN = GND, f
RF
= 1575.42MHz, and T
A
= +25
°
C, unless otherwise noted.)
SUPPLY CURRENT vs. TEMPERATURE
M
TEMPERATURE (
°
C)
S
60
40
20
0
-20
14
18
22
26
30
10
-40
80
V
CC
= 2.4V
V
CC
= 2.7V
V
CC
= 3V
LNA/MIXER GAIN vs. TEMPERATURE
M
TEMPERATURE (
°
C)
L
60
40
20
0
-20
10
5
15
20
25
30
35
40
0
-40
80
V
CC
= 2.4V
V
CC
= 2.7V
V
CC
= 3V
IF STAGE GAIN vs. TEMPERATURE
M
TEMPERATURE (
°
C)
I
60
40
20
0
-20
70
65
75
80
85
90
95
100
60
-40
80
V
CC
= 2.4V
V
CC
= 2.7V
V
CC
= 3V
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MAX2745ECM+T 制造商:Maxim Integrated Products 功能描述:RCVR FRONT-END 48TQFP EP - Tape and Reel
MAX2745ECM+TD 功能描述:上下轉(zhuǎn)換器 GPS Front End Downconverter RoHS:否 制造商:Texas Instruments 產(chǎn)品:Down Converters 射頻:52 MHz to 78 MHz 中頻:300 MHz LO頻率: 功率增益: P1dB: 工作電源電壓:1.8 V, 3.3 V 工作電源電流:120 mA 最大功率耗散:1 W 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFP-128
MAX2745EVKIT 功能描述:射頻開發(fā)工具 RoHS:否 制造商:Taiyo Yuden 產(chǎn)品:Wireless Modules 類型:Wireless Audio 工具用于評(píng)估:WYSAAVDX7 頻率: 工作電源電壓:3.4 V to 5.5 V
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