ZHCSP40B
October 2021 – June 2022
LMX2571-EP
PRODUCTION DATA
1
特性
2
应用
3
说明
4
Revision History
5
Pin Configuration and Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
6.5
Electrical Characteristics
6.6
Timing Requirements
6.7
Timing Diagrams
6.8
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Differences Between the LMX2571 and LMX2571-EP
7.3.2
Reference Oscillator Input
7.3.3
R-Dividers and Multiplier
7.3.4
PLL Phase Detector and Charge Pump
7.3.4.1
CPout Pin Charge Pump Current
7.3.4.2
Charge Pump Current When Using External VCO
7.3.5
PLL N-Divider and Fractional Circuitry
7.3.6
Partially Integrated Loop Filter
7.3.7
Low-Noise, Fully Integrated VCO
7.3.8
External VCO Support
7.3.9
Programmable RF Output Divider
7.3.10
Programmable RF Output Buffer
7.3.11
Integrated TX, RX Switch
7.3.12
Power Down
7.3.13
Lock Detect
7.3.14
FSK Modulation
7.3.15
FastLock
7.3.16
Register Readback
7.4
Device Functional Modes
7.4.1
Operation Mode
7.4.2
Duplex Mode
7.4.3
FSK Mode
7.5
Programming
7.5.1
Recommended Initial Power on Programming Sequence
7.5.2
Recommended Sequence for Changing Frequencies
7.6
Register Maps
7.6.1
R60 Register (offset = 3Ch) [reset = 4000h]
7.6.2
R58 Register (offset = 3Ah) [reset = C00h]
7.6.3
R53 Register (offset = 35h) [reset = 2802h]
7.6.4
R47 Register (offset = 2Fh) [reset = 0h]
7.6.5
R46 Register (offset = 2Eh) [reset = 1Ah]
7.6.6
R42 Register (offset = 2Ah) [reset = 210h]
7.6.7
R41 Register (offset = 29h) [reset = 810h]
7.6.8
R40 Register (offset = 28h) [reset = 101Ch]
7.6.9
R39 Register (offset = 27h) [reset = 11F0h]
7.6.10
R35 Register (offset = 23h) [reset = 647h]
7.6.11
R34 Register (offset = 22h) [reset = 1000h]
7.6.12
R33 Register (offset = 21h) [reset = 0h]
7.6.13
R25 to R32 Register (offset = 19h to 20h) [reset = 0h]
7.6.14
R24 Register (offset = 18h) [reset = 10h]
7.6.15
R23 Register (offset = 17h) [reset = 10A4h]
7.6.16
R22 Register (offset = 16h) [reset = 8584h]
7.6.17
R21 Register (offset = 15h) [reset = 101h]
7.6.18
R20 Register (offset = 14h) [reset = 28h]
7.6.19
R19 Register (offset = 13h) [reset = 0h]
7.6.20
R18 Register (offset = 12h) [reset = 0h]
7.6.21
R17 Register (offset = 11h) [reset = 0h]
7.6.22
R9 to R16 Register (offset = 9h to 10h) [reset = 0h]
7.6.23
R8 Register (offset = 8h) [reset = 10h]
7.6.24
R7 Register (offset = 7h) [reset = 10A4h]
7.6.25
R6 Register (offset = 6h) [reset = 8584h]
7.6.26
R5 Register (offset = 5h) [reset = 101h]
7.6.27
R4 Register (offset = 4h) [reset = 28h]
7.6.28
R3 Register (offset = 3h) [reset = 0h]
7.6.29
R2 Register (offset = 2h) [reset = 0h]
7.6.30
R1 Register (offset = 1h) [reset = 0h]
7.6.31
R0 Register (offset = 0h) [reset = 3h]
8
Application and Implementation
8.1
Application Information
8.1.1
Direct Digital FSK Modulation
8.1.2
Frequency and Output Port Switching
8.1.3
OSCin Configuration
8.1.4
Register R0 F1F2_INIT, F1F2_MODE Usage
8.1.5
FastLock With External VCO
8.1.6
OSCin Slew Rate
8.1.7
RF Output Buffer Power Control
8.1.8
RF Output Buffer Type
8.1.9
MULT Multiplier
8.1.10
Integrated VCO
8.2
Typical Applications
8.2.1
Synthesizer Duplex Mode
8.2.1.1
Design Requirements
8.2.1.2
Detailed Design Procedure
8.2.1.3
Synthesizer Duplex Mode Application Curves
8.2.2
PLL Duplex Mode
8.2.2.1
Design Requirements
8.2.2.2
Detailed Design Procedure
8.2.2.3
PLL Duplex Mode Application Curves
8.2.3
Synthesizer/PLL Duplex Mode
8.2.3.1
Design Requirements
8.2.3.2
Detailed Design Procedure
8.2.3.3
Synthesizer/PLL Duplex Mode Application Curves
8.3
Do's and Don'ts
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.2
Layout Example
11
Device and Documentation Support
11.1
Device Support
11.1.1
Development Support
11.2
Documentation Support
11.2.1
Related Documentation
11.3
接收文档更新通知
11.4
支持资源
11.5
Trademarks
11.6
Electrostatic Discharge Caution
11.7
术语表
12
Mechanical, Packaging, and Orderable Information
封装选项
机械数据 (封装 | 引脚)
RHH|36
MPQF144E
散热焊盘机械数据 (封装 | 引脚)
RHH|36
QFND633
订购信息
zhcsp40b_oa
zhcsp40b_pm
8.2.2.3
PLL Duplex Mode Application Curves
Figure 8-24
F1 to F2 Switching
Figure 8-26
F1 to F2 Switching Time
Figure 8-25
F2 to F1 Switching
Figure 8-27
F2 to F1 Switching Time
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