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參數(shù)資料
| 型號： | HMC700LP4E |
| 廠商： | Hittite Microwave Corporation |
| 文件頁數(shù)： | 24/26頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC FRACT-N PLL 16BIT 24QFN |
| 標準包裝： | 1 |
| 類型： | 整數(shù) N/小數(shù) N 分頻 |
| PLL： | 是 |
| 輸入： | CMOS |
| 輸出： | CMOS |
| 電路數(shù)： | 1 |
| 比率 - 輸入:輸出： | 1:1 |
| 差分 - 輸入:輸出： | 是/無 |
| 頻率 - 最大： | 8GHz |
| 除法器/乘法器： | 是/無 |
| 電源電壓： | 3.3V，5V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 24-VQFN 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 24-QFN 裸露焊盤（4x4） |
| 包裝： | 標準包裝 |
| 其它名稱： | 1127-1064-6 |
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
978-250-3343 tel 978-250-3373 fax Order On-line at www.hittite.com
Application Support: apps@hittite.com
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HMC700LP4 / 700LP4E
v11.0411
8 GHz 16-Bit Fractional-N PLL
Reference Input Stage
the reference input provides the path from the external reference source to the phase detector. the input stage of the
reference path is shown in Figure 8. HMc700LP4(E) is a Dc coupled, common emitter differential nPn buffer. input
pins have 1.8V bias on them. Expected input is full swing 3V cMoS. Slightly degraded phase noise performance may
result with quasi sine or sine inputs. input reference should have a noise floor better than -155 dBc/Hz at 50MHz to
avoid degradation of the input reference path. the input reference path phase noise floor is approximately equivalent to
-155 dBc/Hz. this input should be well isolated from the Vco for best spurious performance in fractional mode.
Figure 8. Reference Path Input Stage
Ref Path ’R’ Divider
the reference path “r” divider is based on a 14 bit counter and can divide input signals of up to 220 MHz input by
values from 1 to 16,383 and is controlled by rdiv (table 9).
RF Input Stage
the rF input stage provides the path from the external Vco to the phase detector via the fractional divider. the rF
input path is rated to operate nominally from 100 MHz to 8 GHz. the HMc700LP4(E) rF input stage is a differential
common emitter stage with Dc coupling, and is protected by ESD diodes as shown in Figure 9. the rF input stage is
internally matched from a single ended 50 ohm source above about 3.5 GHz, with the complimentary input grounded.
if a better match is required at low frequency a simple shunt 50ohm resistor can be used external to the package.
the rF input stage has excellent sensitivity (see figure 4). Excessive drive levels can result in more coupling and
spurious products in fractional mode. -10 dBm is a recommended drive level.
Figure 9. RF Input Stage
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HMC700LP4ETR | 制造商:Hittite Microwave Corp 功能描述:IC FRACT-N PLL 16BIT 24QFN 制造商:Hittite Microwave Corp 功能描述:HMC700 Series 8 GHz 16-Bit Prescaler Fractional-N PLL - 4x4 mm QFN-24 |
| HMC701LP6C | 制造商:HITTITE 制造商全稱:Hittite Microwave Corporation 功能描述:8 GHz 16-BIT FRACTIONAL-N SYNTHESIZER |
| HMC701LP6C_10 | 制造商:HITTITE 制造商全稱:Hittite Microwave Corporation 功能描述:8 GHz 16-BIT FRACTIONAL-N SYNTHESIZER |
| HMC701LP6CE | 制造商:Hittite Microwave Corp 功能描述:IC SYNTHESIZER W/SWEEPER 40-QFN |
| HMC702LP6CE | 制造商:Hittite Microwave Corp 功能描述:IC SYNTHESIZER W/SWEEPER 40-QFN |
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