- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄385524 > MAX2745 (Maxim Integrated Products, Inc.) Single-Chip Global Positioning System Receiver Front-End PDF資料下載
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)： | 4/9頁(yè) |
| 文件大?。?/td> | 410K |
| 代理商： | MAX2745 |
M
Single-Chip Global Positioning System
Receiver Front-End
4
_______________________________________________________________________________________
PIN
1
2
NAME
RBIAS
CBIAS
FUNCTION
External BIAS Resistor. For normal bias, connect a 100k
(1%) resistor to ground.
BIAS Bypass Capacitor. Connect a 0.1μF capacitor to ground.
3, 4, 9, 11, 13,
25, 27, 32, 39,
43, 46
V
DD
Power-Supply Voltage. Bypass with a 0.1μF capacitor to ground as close to the pins as possible.
5, 6, 8, 14, 26,
30, 41, 44
GND
Ground
7
10
12
15
RFIN
RF Input Signal. Requires external matching network.
External LNA Voltage Supply
AGC External Filter. Requires external RC lowpass filter.
Crystal Swing Select. Drive logic high for full swing. Drive logic low for limited swing.
IEXT_LNA
AGC_FIL
XTAL_SSEL
16
XTAL_CSEL
Crystal Clock Select. Drive logic high for fundamental mode of 16.368MHz. Drive logic low for third
overtone mode of 32.736MHz.
17
BST_CTRL
Active-High Boost Control Input. Drive logic high to activate the voltage booster (crystal oscillator is
biased from BIAS). Drive logic low to deactivate the voltage booster (crystal oscillator is self-biased).
18
19
20
21
22
23
24
TEST_EN
VDD_VB
CKOUT
DOUT
VB_CS+
VB_CS-
V
OUT
Connect to Ground for Normal Operation
Power Supply for Voltage Booster. Connect to V
DD
if voltage booster is not used.
Full-Swing Clock Output
Single-Ended Full-Swing Digital Output
Positive Voltage Booster External Floating CAP. Connect a 6nF capacitor to GND.
Negative Voltage Booster External Floating CAP. Connect a 6nF capacitor to GND.
Voltage Booster Output. Bypass to GND with a 1μF capacitor as close to the pin as possible.
Pin Description
Typical Operating Characteristics (continued)
(MAX2745 EV kit, V
DD
= +3.0V, SHDN = GND, f
RF
= 1575.42MHz, and T
A
= +25
°
C, unless otherwise noted.)
TOTAL GAIN vs. TEMPERATURE
M
TEMPERATURE (
°
C)
T
60
40
20
0
-20
102
104
106
108
110
100
-40
80
V
CC
= 2.4V
V
CC
= 2.7V
V
CC
= 3V
0
0.4
0.2
0.8
0.6
1.4
1.2
1.0
1.6
-40
0
TEMPERATURE (
°
C)
-20
20
40
60
80
TEMPERATURE-SENSOR OUTPUT VOLTAGE
vs. TEMPERATURE
M
T
T
V
DD
= 3.6V
V
DD
= 2.4V
2.0
2.4
2.2
2.8
2.6
3.0
3.2
1.6
1.9
VDD_VB (V)
2.0
1.7
1.8
2.1
2.2
2.3
VOLTAGE-BOOSTER
OUTPUT vs. VDD_VB
M
V
O
T
A
= -40
°
C
BST_CTRL = HIGH
V
OUT
= V
DD
T
A
= +25
°
C
T
A
= +85
°
C
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX2745ECM | SWITCH LIGHT TOUCH 7.0MM 130GF |
| MAX2753 | POT 200 OHM 6MM CARBON TOP ADJ |
| MAX2753EUA | 2.4GHz Monolithic Voltage-Controlled Oscillator with Differential Outputs |
| MAX2754 | 1.2GHz VCO with Linear Modulation Input |
| MAX2754EUA | 1.2GHz VCO with Linear Modulation Input |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX2745ECM+ | 制造商:Maxim Integrated Products 功能描述:RCVR FRONT-END 48TQFP EP - Rail/Tube |
| MAX2745ECM+D | 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 |
| 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(kāi)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 |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。