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Hittite Microwave Corporation

HMC980 Datasheet Preview

HMC980 Datasheet

Active Bias Controller

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v00.0312
Typical Applications
Microwave Radio & VSAT
Military & Space
Test Instrumentation
Fiber Optic Modulator Driver Biasing
CATV Laser Driver Biasing
Cellular Base Station
Wireless Infrastructure Equipment
HMC980
Active Bias Controller
High Current
Features
Automatic Gate voltage adjustment (No Calibra-
tion required)
Supply Voltage (5V to 16.5V)
Bias both Enhancement or Depletion type
devices
Adjustable Drain Current up to 1.6 A
Sink or source gate current
Internal negative voltage generation
Can be disabled to use external negative rail
Fast Enable/Disable
Trigger-out Output for Daisy Chain
Power-Up and Power-Down Sequencing
Over/Under Current Alarm with built-in hystresis
Die Size: 1.4 x 2.26 x 0.25mm
Functional Diagram
General Description
HMC980 is an active bias controller that can
automatically adjust the gate voltage of an external
amplifier to achieve constant bias current. With an
integrated controller, HMC980 achieves safe power on/
off, disable/enable and automatic supply sequencing
ensuring the safety of the external amplifier. It can
be used to bias any enhancement and depletion
type amplifier operating in Class-A regime with
drain voltages (VDRAIN) from 5V to 16.5V and drain
currents (IDRAIN) up to 1.6 A, offering a complete
biasing solution.
HMC980 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. All data shown herein is taken with
appropriate probes.
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
1
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com




Hittite Microwave Corporation

HMC980 Datasheet Preview

HMC980 Datasheet

Active Bias Controller

No Preview Available !

v00.0312
HMC980
Active Bias Controller
High Current
Electrical Specifications, TA = +25°C, VDD=12V, VDIG= 3.3V, Depletion Master
Unless Otherwise Noted
Parameter
Symbol
Conditions
Min. Typ. Max.
Supply Voltage
Vdd
5 16.5
VDD Quiescent Current
VDIG Quiescent Current
IDD
IDIG
VDD = 5V
EN = VDIG
EN = GND
VDD = 12V
EN = VDIG
EN = GND
VDIG= 3.3 V
VDIG= 5 V
19
7.5
20
9
3.5
6.5
Charge Pump Oscillator Frequency
FOSC
300
Voltage Reference
VREF
1.44
ALMTRIG Input Threshold
ALMTRIG
Vinlow
Vinhigh
1.4
1
Enable Input Threshold
S0, S1 Input Threshold
VDRAIN Characteristics
ENTHRS
SWTHRS
Vinlow
Vinhigh
Vinlow
Vinhigh
1.4
1.4
1
1
S1=S0=GND
0.05
0.3
DRAIN Current Adjustment Range
IDRAIN
S1=GND, S0=VDIG
S1=VDIG, S0=GND
0.3
0.6
0.6
1.2
S1=VDIG, S0=VDIG
1.2
1.6
DRAIN Current Change Over Digital Voltage
DRAIN Current Change Over Temperature
ΔIDRAINV
VDRAIN set to 12V,
IDRAIN set to 400 mA
0.4
0.023
DRAIN Range
VDRAIN
5 16.5
VDRAIN Change Over Temperature
VNEG Characteristics
ΔVDRAIN
VDRAIN set to 12V,
IDRAIN set to 400 mA
0.02
Negative Voltage Output
VNEG
-2.46
VNEG Current Sink
VGATE Characteristics
INEG
0 60
GATE Current Supply
IG
-4 4
VGATE Low Level
VG_MIN
VNEG
VGATE High Level
VG_MAX
VNEG+4.5
VG2 Characteristics
VG2<2V
-0.1
0.1
VG2 Current Supply
VG2 Adjustment Range
VDIG Characteristics
IG2
VG2
6V>VG2>2V
VG2>6V
-1
-5
1
1
5
VDD-1.3
Adjustment Range
VDIG
3.3 5
VDIG Quiescent Current
SW Characteristics
IDIG
VDD= 12V,
VDIG=EN =3.3 V
3.5
S1=S0=GND
2.8
Internal Switch Resistance
RDS_ON
S1=GND, S0=VDIG
S1=VDIG, S0=GND
1.55
0.85
S1=VDIG, S0=VDIG
0.7
Units
V
mA
mA
mA
mA
mA
mA
kHz
V
V
V
V
V
V
V
A
A
A
A
%/V
%/C
V
%/C
V
mA
mA
V
V
mA
mA
mA
V
V
mA
Ohm
Ohm
Ohm
Ohm
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
2


Part Number HMC980
Description Active Bias Controller
Maker Hittite Microwave Corporation
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HMC980 Datasheet PDF






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