BIAS CONTROLLER. HMC981LP3E Datasheet

HMC981LP3E CONTROLLER. Datasheet pdf. Equivalent

Part HMC981LP3E
Description ACTIVE BIAS CONTROLLER
Feature BIAS CONTROLLERS - SMT v01.0411 13 Typical Applications • Microwave Radio & VSAT • Military & Spa.
Manufacture Analog Devices
Datasheet
Download HMC981LP3E Datasheet



HMC981LP3E
v01.0411
13
Typical Applications
• Microwave Radio & VSAT
• Military & Space
• Test Instrumentation
• Fiber Optic Modulator Driver Biasing
• CATV Laser Driver Biasing
• Cellular Base Station
• Wireless Infrastructure Equipment
Functional Diagram
HMC981LP3E
ACTIVE BIAS CONTROLLER
Features
Automatic Gate voltage adjustment (No Calibration
required)
Supply Voltage: 4V to 12V
Digital Voltage: 3.3V to 5V
Controls both Enhancement and Depletion type
devices
Adjustable Drain Current up to 200mA
Sink/Source Gate Current Capability
Optional Internal negative voltage generation that
can be disabled to use external negative rail
Fast Enable/Disable
Trigger-out Output for Daisy Chain Power-Up and
Power-Down Sequencing
16 Lead 3x3 mm SMT Package: 9 mm²
General Description
HMC981LP3E is an active bias controller that
automatically adjusts the gate voltage of an external
amplifier to achieve constant bias current. It can be
used to bias any enhancement and depletion type
amplifiers operating in Class-A regime with Drain
voltages from 4V to 12V and drain currents up to
200mA, offering a complete biasing solution.
HMC981LP3E achieves excellent bias stability over
supply, temperature and process variations, and
eliminates the required calibration procedures usually
employed to prevent RF performance degradation due
to such variations.
The HMC981LP3E is housed in an RoHS compliant
3x3 mm QFN leadless package with an exposed
backside pad to improve thermal characteristics.
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Order On-line Trademarks and registered trademarks are the property of their respective owners. at www.hAiptptilticea.tcioonmSupport: Phone: 1-800-ANALOG-D



HMC981LP3E
v01.0411
HMC981LP3E
ACTIVE BIAS CONTROLLER
Electrical Specifications, TA = +25°C, VDD=8V, VDIG= 3.3V, Depletion Master
Unless Otherwise Noted
Supply Voltage
Parameter
VDD Quiescent Current
VDIG Quiescent Current
Negative Voltage Output
Oscillator Frequency
Voltage Reference
Enable Input Threshold
Switch Input Threshold
Short Circuit Disable Input Threshold
VDRAIN Characteristics
DRAIN Current Adjustment Range
DRAIN Current Change Over Digital Voltage
DRAIN Current Change Over Temperature
DRAIN Range
VDRAIN Change Over Temperature
VNEG Characteristics
Negative Voltage Output
VNEG Current Sink
VGATE Characteristics
GATE Current Supply
VGATE Low Level
VGATE High Level
VG2 Characteristics
VG2 Current Supply
VG2 Adjustment Range
VDIG Characteristics
Adjustment Range
VDIG Quiescent Current
SW Characteristics
Internal Switch Resistance
Symbol
Vdd
IDD
IDIG
VNEG
FOSC
VREF
ENTHRS
SWTHRS
DSCTHRS
Conditions
VDD = 4V
EN = VDIG
EN = GND
VDD = 8V
EN = VDIG
EN = GND
VDIG= 3.3 V
VDIG= 5 V
Vinlow
Vinhigh
Vinlow
Vinhigh
Vinlow
Vinhigh
IDRAIN
ΔIDRAINV
VDRAIN
ΔVDRAIN
SW=GND
SW=VDIG
VDRAIN set to 8V,
IDRAIN set to 160 mA
VDRAIN set to 8V,
IDRAIN set to 160 mA
VNEG
INEG
VDD= 4V
VDD= 8V
IG
VG_MIN
VG_MAX
IG2
VG2
VG2<1.5V
VG2>1.5V
VDIG
IDIG
VDD= 8 V,
VDIG=EN =3.3 V
RDS_ON
SW= GND
SW=VDIG
Min.
Typ.
Max.
4
12
7
3
7.5
4
3
5
-2.5
300
1.42
1
1.4
1
1.4
1
1.4
20
80
80
200
0.4
0.02
4
12
1.5
-2.5
0
8
0
15
-0.8
0.8
VNEG
VNEG+4.5
-0.1
0.1
-1
1
1
VDD-1.3
3.3
5
3
10
5
Units
V
mA
mA
mA
mA
mA
mA
V
kHz
V
V
V
V
V
V
V
mA
mA
%/V
%/C
V
%/C
V
mA
mA
mA
V
V
mA
mA
V
V
mA
Ohm
Ohm
13
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Order On-line Trademarks and registered trademarks are the property of their respective owners. at www.hAiptptilticea.tcioonmSupport: Phone: 1-800-ANALOG-D
13 - 2





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