HMC980LP4E
v01.0911
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
24 Lead 4mmx4mm QFN Package: 16mm
2
•
•
Typical Applications
•
•
•
•
•
•
•
Microwave Radio & VSAT
Military & Space
Test Instrumentation
Fiber Optic Modulator Driver Biasing
CATV Laser Driver Biasing
Cellular Base Station
Wireless Infrastructure Equipment
13
BIAS CONTROLLERS - SMT
Functional Diagram
General Description
HMC980LP4E 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, HMC980LP4E 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.
HMC980LP4E 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 HMC980LP4E is housed in an RoHS compliant
4x4 mm QFN leadless package with an exposed
backside pad to improve thermal characteristics.
13 - 1
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
2 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
HMC980LP4E
v01.0911
ACTIVE BIAS CONTROLLER
HIGH CURRENT
Electrical Specifications,
T
A
= +25°C, VDD=12V, VDIG= 3.3V, Depletion Master
Unless Otherwise Noted
Parameter
Supply Voltage
Symbol
Vdd
VDD = 5V
VDD Quiescent Current
IDD
VDD = 12V
VDIG Quiescent Current
Charge Pump Oscillator Frequency
Voltage Reference
Enable Input Threshold
S0, S1 Input Threshold
VDRAIN Characteristics
S1=S0=GND
DRAIN Current Adjustment Range
IDRAIN
S1=GND, S0=VDIG
S1=VDIG, S0=GND
S1=VDIG, S0=VDIG
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<2V
VG2 Current Supply
IG2
6V>VG2>2V
VG2>6V
VG2 Adjustment Range
VDIG Characteristics
Adjustment Range
VDIG Quiescent Current
SW Characteristics
S1=S0=GND
Internal Switch Resistance
RDS_ON
S1=GND, S0=VDIG
S1=VDIG, S0=GND
S1=VDIG, S0=VDIG
2.8
1.55
0.85
0.7
Ohm
Ohm
Ohm
Ohm
VDIG
IDIG
VDD= 12V,
VDIG=EN =3.3 V
3.3
3.5
5
V
mA
VG2
-0.1
-1
-5
1
0.1
1
5
VDD-1.3
mA
mA
mA
V
IG
VG_MIN
VG_MAX
-4
VNEG
VNEG+4.5
4
mA
V
V
VNEG
INEG
0
-2.46
60
V
mA
ΔIDRAINV
VDRAIN
ΔVDRAIN
VDRAIN set to 12V,
IDRAIN set to 400 mA
VDRAIN set to 12V,
IDRAIN set to 400 mA
5
0.02
0.05
0.3
0.6
1.2
0.4
0.023
16.5
0.3
0.6
1.2
1.6
A
A
A
A
%/V
%/C
V
%/C
IDIG
FOSC
VREF
ENTHRS
SWTHRS
Vinlow
Vinhigh
Vinlow
Vinhigh
1.4
1.4
1
EN = VDIG
EN = GND
EN = VDIG
EN = GND
Conditions
Min.
5
19
7.5
20
9
3.5
6.5
300
1.44
1
Typ.
Max.
16.5
Units
V
mA
mA
mA
mA
mA
mA
kHz
V
V
V
V
V
VDIG= 3.3 V
VDIG= 5 V
13
BIAS CONTROLLERS - SMT
13 - 2
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
2 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
HMC980LP4E
v01.0911
ACTIVE BIAS CONTROLLER
HIGH CURRENT
Bias Current Accuracy
[2]
1475
1450
1425
IDrain is set to: 1409mA
Bias Current Accuracy
[1]
405
400
395
IDrain is set to: 388mA
IDRAIN (mA)
IDRAIN (mA)
390
385
380
375
370
3.3
3.5
3.6
3.8
4.0
4.2
VDIG (V)
4.3
4.5
4.7
4.8
5.0
+25 C
+85 C
-40 C
1400
1375
1350
1325
1300
3.3
3.5
3.6
3.8
4
4.2
VDIG (V)
4.3
4.5
4.7
4.8
5
+25 C
+85 C
-40 C
13
BIAS CONTROLLERS - SMT
Power Up Waveform
14
12
10
8
6
4
2
0
-2
-4
0
10
20
30
Shutdown Waveform
14
12
10
VDD(V)
VDRAIN (V)
VDIG (V)
VG2 (V)
VNEG (V)
VGATE (V)
VOLTAGE (V)
VOLTAGE (V)
70
80
90
100
VDD (V)
VDRAIN (V)
VDIG(V)
VG2 (V)
VNEG (V)
VGATE (V)
8
6
4
2
0
-2
-4
40
50
60
TIME (ms)
0
20
40
60
80 100 120
TIME (ms)
140
160
180
200
Enable Waveform
16
12
8
Disable Waveform
14
12
10
EN(V)
VDRAIN (V)
VG2 (V)
VNEG (V)
VGATE (V)
VOLTAGE (V)
VOLTAGE (V)
EN(V)
VDRAIN (V)
VG2 (V)
VNEG (V)
VGATE (V)
8
6
4
2
0
-2
-4
-6
4
0
-4
-8
-12
0
1
2
3
TIME (ms)
4
5
6
4
5
6
7
TIME (ms)
8
9
10
[1] HMC637LP5 is used as external amplifier
[2] HMC591LP5 is used as external amplifier
13 - 3
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
2 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
HMC980LP4E
v01.0911
ACTIVE BIAS CONTROLLER
HIGH CURRENT
Load Regulation @ VDD=5V, VDIG=3.3V,
SW0=3.3V, SW1=GND
6
Load Regulation @ VDD=5V, VDIG=3.3V,
SW0=GND, SW1=GND
6
5
5
VDRAIN (V)
4
VDRAIN (V)
4
3
+25C
+85C
-40C
3
+25C
+85C
-40C
2
50
100
150
200
250
300
2
300
350
400
450
IDRAIN (mA)
500
550
600
IDRAIN (mA)
17
17
16
16
15
15
14
+25C
+85C
-40C
14
+25C
+85C
-40C
13
600
700
800
900
IDRAIN (mA)
1000
1100
1200
13
1200
1300
1400
IDRAIN (mA)
1500
1600
VNEG Load Regulation @ VDD=5V
-2
VNEG Load Regulation @ VDD=16.5V
-2
-2.1
-2.1
+25 C
+85 C
-40 C
VNEG (V)
VNEG (V)
-2.2
-2.2
-2.3
-2.3
-2.4
+25 C
+85 C
-40 C
-2.4
-2.5
0
5
10
15
INEG (mA)
20
25
30
-2.5
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
INEG (mA)
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
2 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
13 - 4
BIAS CONTROLLERS - SMT
Load Regulation @ VDD=16.5V,
VDIG=5.0V, SW0=GND, SW1=VDIG
Load Regulation @ VDD=16.5V,
VDIG=5.0V, SW0=VDIG, SW1=VDIG
13
VDRAIN (V)
VDRAIN (V)
HMC980LP4E
v01.0911
ACTIVE BIAS CONTROLLER
HIGH CURRENT
VNEG Load Transient VDD=16.5V
40
30
20
VNEG Load Transient VDD=5V
-2.2
-2.25
-2.3
-2.2
-2.25
-2.3
40
30
20
10
0
VNEG (V)
VNEG (V)
-2.35
-2.4
-2.45
-2.5
-2.55
-2.6
0
1
2
3
4
5
TIME (ms)
6
7
8
9
10
0
-2.35
-2.4
-2.45
-2.5
-2.55
-2.6
0
1
2
3
4
5
TIME (ms)
6
7
8
9
INEG (mA)
-10
-20
-30
-40
10
INEG (mA)
-10
-20
-30
-40
10
13
BIAS CONTROLLERS - SMT
0
-0.25
-0.5
VGATE Load Regulation @ VDD=12V
[1]
VG2 Load Regulation @ VDD=12V
[2]
10
9
VG2=0.97V
VG2=1.81V
VG2=3.73V
VG2=6.68V
IDrain is set to : 388mA
IDrain is set to : 388mA
8
7
VGATE (V)
VG2 (V)
+25C
+85C
-40C
6
5
4
3
2
1
-0.75
-1
-1.25
-1.5
-7
-6
-5
-4
-3
-2
-1
0
1
2
3
4
5
6
7
0
-8
-6
-4
-2
0
IG2 (mA)
2
4
6
8
IG (mA)
VNEG Line Regulation vs. Supply Voltage
-2.44
No load condition
-2.46
VNEG (V)
-2.48
+25C
+85C
-40C
-2.5
5
7
9
11
13
15
17
SUPPLY VOLTAGE (V)
[1] HMC637LP5 is used as external amplifier
[2] HMC637LP5 is used as external amplifier
13 - 5
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
2 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
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