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
13 - 21
13
HMC920LP5E
v07.1013
ACTIVE BIAS CONTROLLER
Operation Modes
HMC920LP5E can be configured to bias both enhancement and depletion mode external amplifiers. The mode of
operation can be selected by setting two pins (VNEGFB, VGATEFB) as tabulated in Table-1. The connection to the
VNEGIN should be adjusted accordingly.
In order not to bias external amplifier in a wrong region, please make sure that the correct mode of operation is
selected before powering up HMC920LP5E.
HMC920LP5E does not allow the internal negative voltage generator to work if an enhancement mode is selected.
Therefore, if VNEGFB is left floating while VGATEFB is grounded, HMC920LP5E will stay in standby mode.
Please note that the external negative voltage should be between -2.5V to -3.5V for HMC920LP5E to operate.
Table 1. Mode Selection
VNEGFB
VGATEFB
VNEGIN
Description
MODE1
(Depletion/Master Mode)
FLOAT
FLOAT
Connected to
VNEGOUT
Depletion mode transistor. Internal negative voltage generator is
active and generates -2.5V. Sample application schematic given
shown in Fig.4a.
MODE2
(Depletion/Slave Mode)
GND
FLOAT
Connected to
External VSS
Depletion mode transistor. Internal negative voltage generator is
disabled. An external negative voltage less than -2.3V should be
connected to VNEGIN. Sample application schematic given shown
in Fig.4b.
---
FLOAT
GND
N/A
Not allowed. HMC920LP5E stays in standby.
MODE3
(Enhancement Mode)
GND
GND
Connected to
GND
Enhancement mode transistor. Internal negative voltage generator is
disabled. Sample application schematic given shown in Fig.5.
Figure 3. Daisy Chain Operation
发布紧急采购，3分钟左右您将得到回复。
相关PDF资料
IDTTSE2002B3CNRG
IC TEMP SENS EEPROM DFN-8
IPM6220ACAZ-T
IC REG 5OUT BUCK/LDO SYNC 24SSOP
IR2170
IC CURRENT SENSE 600V 1MA 8-DIP
IR2171STR
IC CURRENT SENSE 8SOIC
IR2172S
IC CURRENT SENSE 8SOIC
IR2175STR
IC CURRENT SENSE 0.5% 8SOIC
IR22771STRPBF
IC CURRENT SENSE 16SOIC
IRU3073CQTR
IC REG DL BCK/LINEAR 16-QSOP
相关代理商/技术参数
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
HMC924LC5
制造商:HITTITE 制造商全称:Hittite Microwave Corporation 功能描述:GaAs MMIC I/Q UPCONVERTER 10 - 16 GHz
HMC924LC5TR
制造商:Hittite Microwave Corp 功能描述:IC MMIC I/Q UPCONVERTER 32SMD
HMC925LC5
制造商:HITTITE 制造商全称:Hittite Microwave Corporation 功能描述:GaAs MMIC I/Q UPCONVERTER 5.5 - 8.6 GHz