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LMX2485ESQX/NOPB PDF预览

LMX2485ESQX/NOPB

更新时间: 2024-11-22 11:12:55
品牌 Logo 应用领域
德州仪器 - TI 通信射频个人通信
页数 文件大小 规格书
48页 1174K
描述
用于射频个人通信的 50MHz 至 3GHz Δ-Σ 低功耗双路 PLL | RTW | 24 | -40 to 85

LMX2485ESQX/NOPB 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Active包装说明:HVQCCN, LCC24,.16SQ,20
Reach Compliance Code:compliantECCN代码:5A991.G
HTS代码:8542.39.00.01Factory Lead Time:6 weeks
风险等级:5.63模拟集成电路 - 其他类型:PLL FREQUENCY SYNTHESIZER
JESD-30 代码:S-PQCC-N24JESD-609代码:e3
长度:4 mm湿度敏感等级:3
功能数量:1端子数量:24
最高工作温度:85 °C最低工作温度:-40 °C
最大输出频率:3000 GHz封装主体材料:PLASTIC/EPOXY
封装代码:HVQCCN封装等效代码:LCC24,.16SQ,20
封装形状:SQUARE封装形式:CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度(摄氏度):260电源:3 V
认证状态:Not Qualified座面最大高度:0.75 mm
子类别:PLL or Frequency Synthesis Circuits最大供电电流 (Isup):5 mA
最大供电电压 (Vsup):3.6 V最小供电电压 (Vsup):2.5 V
标称供电电压 (Vsup):3 V表面贴装:YES
技术:CMOS温度等级:INDUSTRIAL
端子面层:Matte Tin (Sn)端子形式:NO LEAD
端子节距:0.5 mm端子位置:QUAD
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:4 mm
Base Number Matches:1

LMX2485ESQX/NOPB 数据手册

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Sample &  
Buy  
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Technical  
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LMX2485, LMX2485E  
SNAS236G OCTOBER 2005REVISED JANUARY 2016  
LMX2485x 3-GHz Delta-Sigma Low-Power Dual PLLatinum™ Frequency Synthesizer  
1 Features  
3 Description  
The LMX2485 device is  
performance delta-sigma fractional-N PLL with an  
auxiliary integer-N PLL. The device is fabricated  
using Texas Instruments' advanced process.  
a
low power, high  
1
Quadruple Modulus Prescaler for Lower Divides  
RF PLL: 8/9/12/13 or 16/17/20/21  
IF PLL: 8/9 or 16/17  
Advanced Delta-Sigma Fractional Compensation  
With delta-sigma architecture, fractional spurs at  
lower offset frequencies are pushed to higher  
frequencies outside the loop bandwidth. The ability to  
push close in spur and phase noise energy to higher  
frequencies is a direct function of the modulator  
order. Unlike analog compensation, the digital  
feedback technique used in the LMX2485 is highly  
resistant to changes in temperature and variations in  
wafer processing. The LMX2485 delta-sigma  
modulator is programmable up to fourth order, which  
allows the designer to select the optimum modulator  
order to fit the phase noise, spur, and lock time  
requirements of the system.  
12-Bit or 22-Bit Selectable Fractional Modulus  
Up to 4th Order Programmable Delta-Sigma  
Modulator  
Features for Improved Lock Time  
Fastlock / Cycle Slip Reduction With Integrated  
Time-Out Counter Which Requires Only a  
Single-Word Write  
Wide Operating Range  
LMX2485 RF PLL: 500 MHz to 3.0 GHz  
LMX2485E RF PLL: 50 MHz to 3.0 GHz  
Useful Features  
Serial data for programming the LMX2485 is  
transferred through a three-line, high-speed (20-MHz)  
MICROWIRE interface. The LMX2485 offers fine  
frequency resolution, low spurs, fast programming  
speed, and a single-word write to change the  
frequency. This makes it ideal for direct digital  
modulation applications, where the N-counter is  
directly modulated with information. The LMX2485 is  
available in a 24-lead 4.0 × 4.0 × 0.8 mm WQFN  
package.  
Digital Lock Detect Output  
Hardware and Software Power-Down Control  
On-Chip Input Frequency Doubler.  
RF Phase Detector Frequency up to 50 MHz  
2.5 to 3.6 V Operation With ICC = 5.0 mA  
2 Applications  
Cellular Phones and Base Stations  
Direct Digital Modulation Applications  
Satellite and Cable TV Tuners  
WLAN Standards  
Device Information(1)  
RF PLL Frequency IF PLL Frequency  
PART NUMBER  
LMX2485E  
50 - 3000 MHz  
500 - 3000 MHz  
75 - 800 MHz  
75 - 800 MHz  
LMX2485  
(1) For all available packages, see the orderable addendum at  
the end of the data sheet.  
Functional Block Diagram  
ëddLC1  
ëddLC2  
LC b ꢂivider  
. /ounꢀer  
8ꢁ9  
or  
CinLC  
ꢄbꢅ{/  
ꢅ{/in  
thase  
/omp  
/harge  
tump  
16ꢁ17  
trescaler  
/touꢀLC  
! /ounꢀer  
LC  
[ꢂ  
LC w  
ꢂivider  
ꢅ{/ouꢀ  
ëddwC1  
Cꢀesꢀꢁ[ꢂ  
ꢃÜó  
Cꢀesꢀꢁ[ꢂ  
wC w  
ꢂivider  
1X / 2X  
ëddwC2  
ëddwC3  
ëddwC4  
ëddwC5  
CinwC  
wC [ꢂ  
wC b ꢂivider  
/ /ounꢀer  
8ꢁ9ꢁ12ꢁ13  
or  
16ꢁ17ꢁ20ꢁ21  
trescaler  
/harge  
tump  
/touꢀwC  
C[ouꢀwC  
. /ounꢀer  
FinRF*  
! /ounꢀer  
/ꢄ  
wC Casꢀlock  
/[Y  
ꢃL/wꢅíLwꢄ  
Lnꢀerface  
ꢂ!Ç!  
Dbꢂ  
Dbꢂ  
Dbꢂ  
SD  
Compensation  
[ꢄ  
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,  
intellectual property matters and other important disclaimers. PRODUCTION DATA.  
 
 
 
 

LMX2485ESQX/NOPB 替代型号

型号 品牌 替代类型 描述 数据表
LMX2485ESQ/NOPB TI

完全替代

用于射频个人通信的 50MHz 至 3GHz Δ-Σ 低功耗双路 PLL | RTW |

与LMX2485ESQX/NOPB相关器件

型号 品牌 获取价格 描述 数据表
LMX2485Q-Q1 TI

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500MHz 至 3GHz 汽车类 Δ-Σ 低功耗双路 PLL
LMX2485QSQ/NOPB TI

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500MHz 至 3GHz 汽车类 Δ-Σ 低功耗双路 PLL | RTW | 24 |
LMX2485QSQX/NOPB TI

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500MHz 至 3GHz 汽车类 Δ-Σ 低功耗双路 PLL | RTW | 24 |
LMX2485SQ NSC

获取价格

50 MHz - 3.0 GHz High Performance Delta-Sigma
LMX2485SQ/NOPB NSC

获取价格

IC PLL FREQUENCY SYNTHESIZER, 3000 MHz, PQCC24, 4 X 4 MM, 0.8 MM, PLASTIC, LLP-24, PLL or
LMX2485SQ/NOPB TI

获取价格

用于射频个人通信的 500MHz 至 3GHz Δ-Σ 低功耗双路 PLL | RTW |
LMX2485SQX NSC

获取价格

50 MHz - 3.0 GHz High Performance Delta-Sigma
LMX2485SQX/NOPB TI

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用于射频个人通信的 500MHz 至 3GHz Δ-Σ 低功耗双路 PLL | RTW |
LMX2486 NSC

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1.0 GHz - 4.5 GHz High Performance Delta-Sigma Low Power Dual PLLatinum TM Frequency Synth
LMX2486 TI

获取价格

用于射频个人通信的 1GHz 至 4.5GHz Δ-Σ 低功耗双路 PLL