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参数资料
| 型号： | HMC920LP5E |
| 厂商： | Hittite Microwave Corporation |
| 文件页数： | 16/26页 |
| 文件大小： | 1291K |
| 描述： | IC CTRLR ACTIVE BIAS 32QFN |
| 标准包装： | 1 |
| 功能： | 有源偏压控制器 |
| 输入电压： | 5 V ~ 16.5 V |
| 电流 - 输出： | 500mA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-VFQFN 裸露焊盘 |
| 供应商设备封装： | 32-QFN（5x5） |
| 包装： | 标准包装 |
| 其它名称： | 1127-1077-6 |
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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相关代理商/技术参数 |
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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 类别:RF/IF 和 RFID >> RF 放大器 系列:- 标准包装:3,000 系列:- 频率:100MHz ~ 6GHz P1dB:9.14dBm（8.2mW） 增益:15.7dB 噪音数据:1.3dB RF 型:CDMA，TDMA，PCS 电源电压:2.7 V ~ 5 V 电流 - 电源:60mA 测试频率:2GHz 封装/外壳:0505（1412 公制） 包装:带卷 (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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