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參數(shù)資料
| 型號： | HMC920LP5E |
| 廠商： | Hittite Microwave Corporation |
| 文件頁數(shù)： | 16/26頁 |
| 文件大?。?/td> | 1291K |
| 描述： | IC CTRLR ACTIVE BIAS 32QFN |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 功能： | 有源偏壓控制器 |
| 輸入電壓： | 5 V ~ 16.5 V |
| 電流 - 輸出： | 500mA |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 32-VFQFN 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 32-QFN（5x5） |
| 包裝： | 標(biāo)準(zhǔn)包裝 |
| 其它名稱： | 1127-1077-6 |
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For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
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HMC920LP5E
v07.1013
ACTIVE BIAS CONTROLLER
Low Voltage Linear Regulator (VDIG)
Place the R1 and R3 resistor as close as possible to the VDIG FB pin.
To ensure stable operation of VDIG, bypass VDIG to AGND with a 10礔 tantalum capacitor (with R
ESR
> 200m&)
under full-load conditions.
The HMC920LP5E requires a low voltage bias rail (3.3V to 5V) for internal circuitry. An internal linear regulator
produces a preset 3.5V low-current VDIG output. VDIG powers the internal logic circuitry, oscillator and the control of
the negative charge pump. VDIG supplies a maximum of 30mA current and therefore it is recommended for external
use only for light loading.
If needed the VDIG output can be adjusted externally through R1 and R3, to a maximum of 5V. To adjust the VDIG
value, set R1 to 10k& and determine the value of R3 using the equation (1):
If a 3.3V/5V supply is already available externally, internal low-voltage regulator can be disabled to increase the overall
system efficiency. To deactivate the internal low-voltage regulator, connect a 0Ohm resistor on R3 (depopulate R1),
and connect the external supply to VDIG pin. The typical current consumption from VDIG pin is less than 5mA. The
correct power up sequence is GND, VDD, VDIG, VNEG, and signal pins.
Reference (BGCAP)
The HMC920LP5E employs two reference voltage generators. The first reference voltage generates 2.5V accurate
to ?% over temperature, supply, and load variations.. This reference voltage generator is used to bias VDIG LDO.
A second reference generator generates a stable 2V reference accurate to ?% over temperature, supply, and load
variations. In order to decrease noise, it is recommended to bypass BGCAP to AGND with a 0.1糉 or greater ceramic
capacitor, as close as possible to the BGCAP pin as possible.
R3 = x (VDIG - 2.5) (1)
R1
2.5
Figure 1. Low Voltage Linear Regulator (VDIG) Block Diagram
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| HMC920LP5ETR | 制造商:Hittite Microwave Corp 功能描述:IC CTRLR ACTIVE BIAS 32QFN |
| HMC921LP4E | 功能描述:IC AMP MMIC GASS 24QFN RoHS:是 類別:RF/IF 和 RFID >> RF 放大器 系列:- 標(biāo)準(zhǔn)包裝:3,000 系列:- 頻率:100MHz ~ 6GHz P1dB:9.14dBm（8.2mW） 增益:15.7dB 噪音數(shù)據(jù):1.3dB RF 型:CDMA，TDMA，PCS 電源電壓:2.7 V ~ 5 V 電流 - 電源:60mA 測試頻率:2GHz 封裝/外殼:0505（1412 公制） 包裝:帶卷 (TR) |
| HMC921LP4ETR | 制造商:Hittite Microwave Corp 功能描述:IC AMP MMIC GASS 24QFN |
| HMC922LP4E | 制造商:Hittite Microwave Corp 功能描述:IC MMIC SWITCH SPDT DIFF 24-QFN |
| HMC922LP4ETR | 制造商:Hittite Microwave Corp 功能描述:HMC922 Series DC - 4.0 GHz Non-Reflective Differential SPDT Switch - QFN-24 |
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