THIS PAGE INTENTIONALLY LEFT BLANK
13 - 16
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
VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT
13
HMC626LP5 / 626LP5E
v06.0709
Functional Diagram
Electrical Speci cations, TA = +25° C, Vdd = Vs= +5V, Vctl= 0/ +5V
The HMC626LP5(E) is ideal for:
• IF & RF Applications
• Cellular/3G Infrastructure
• WiBro / WiMAX / 4G
• Microwave Radio & VSAT
• Test Equipment and Sensors
+8.5 dB to +40 dB Gain Control in 0.5 dB Steps
High Output IP3: +36 dBm
±0.25 dB Typical Gain Step Error
Single +5V Supply
32 Lead 5x5mm SMT Package: 25mm2
The HMC626LP5(E) is a digitally controlled variable
gain ampli er which operates from DC to 1 GHz, and
can be programmed to provide anywhere from 8.5 dB,
to 40 dB of gain, in 0.5 dB steps. The HMC626LP5(E)
delivers noise gure of 2.8 dB in its maximum gain
state, with output IP3 of up to +36 dBm in any state.
This single positive control line per bit digital VGA
incorporates off chip AC ground capacitors for near
DC operation, making it suitable for a wide variety of
RF and IF applications. The HMC626LP5(E) is housed
in a RoHS compliant 5x5 mm QFN leadless package,
and requires no external matching components. A
serial control version of this product is available as the
HMC681LP5(E).
Parameter Frequency Min. Typ. Max. Units
Gain (Maximum Gain State) DC - 0.5 GHz
0.5 - 1.0 GHz
37
30
42.5
35.0
dB
dB
Gain Control Range 31.5 dB
Input Return Loss 20 dB
Output Return Loss 15 dB
Gain Setting Accuracy: (Referenced to Maximum Gain State)
All Gain States 0.5 - 1.0 GHz ± (0.15 + 3% of Relative Gain Setting) Max. dB
Output Power for 1 dB Compression DC - 1.0 GHz 20 dBm
Output Third Order Intercept Point
(Two-Tone Output Power= 5 dBm Each Tone) DC - 1.0 GHz 36 dBm
Noise Figure DC - 1.0 GHz 2.8 dB
Switching Characteristics
tRISE, tFALL (10/90% RF)
tON, tOFF (50% CTL to 10/90% RF)
DC - 1.0 GHz 130
140
ns
ns
Total Supply Current DC - 1.0 GHz 176 225 mA
Typical Applications Features
General Description
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, DC - 1 GHz
13 - 17
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
VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT
13
Input Return Loss [2]
(Only Major States are Shown)
Relative Gain Setting
(Referenced to Maximum Gain State)
(Only Major States are Shown)
Gain vs. Frequency [1]
Input Return Loss [1]
(Only Major States are Shown)
Output Return Loss [2]
(Only Major States are Shown)
0
5
10
15
20
25
30
35
40
45
50
0 0.3 0.5 0.8 1 1.3 1.5
+25 C
+85 C
-40 C
GAIN (dB)
FREQUENCY (GHz)
[1]
[2]
-40
-35
-30
-25
-20
-15
-10
-5
0
0 0.3 0.5 0.8 1 1.3 1.5
RETURN LOSS (dB)
FREQUENCY (GHz)
-40
-35
-30
-25
-20
-15
-10
-5
0
0 0.3 0.5 0.8 1 1.3 1.5
RETURN LOSS (dB)
FREQUENCY (GHz)
Output Return Loss [1]
(Only Major States are Shown)
-40
-35
-30
-25
-20
-15
-10
-5
0
0 0.3 0.5 0.8 1 1.3 1.5
RETURN LOSS (dB)
FREQUENCY (GHz)
-40
-35
-30
-25
-20
-15
-10
-5
0
0 0.3 0.5 0.8 1 1.3 1.5
RETURN LOSS (dB)
FREQUENCY (GHz)
-35
-30
-25
-20
-15
-10
-5
0
0 0.3 0.5 0.8 1 1.3 1.5
RELATIVE GAIN (dB)
FREQUENCY (GHz)
[1] Tested with broadband bias tee on output J2, C7, C8 = 10,000pF ; L1 = 680nH
[2] Data taken on eval board as described in data sheet
HMC626LP5 / 626LP5E
v06.0709 0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, DC - 1 GHz
13 - 18
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
VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT
13
Step Error vs. Frequency [2]
(Only Major States are Shown)
Bit Error vs. Frequency [2]
(Only Major States are Shown) Bit Error vs. Relative Gain Setting [2]
Relative Phase vs. Frequency [2]
(Only Major States are Shown)
-40
-20
0
20
40
60
0 0.3 0.5 0.8 1 1.3 1.5
RELATIVE PHASE (deg)
FREQUENCY (GHz)
31.5 dB
16 dB
8 dB
0.5 - 4 dB
-2
-1.5
-1
-0.5
0
0.5
1
1.5
2
0 0.3 0.5 0.8 1 1.3 1.5
BIT ERROR (dB)
FREQUENCY (GHz)
-2
-1.5
-1
-0.5
0
0.5
1
1.5
2
0 4 8 12 16 20 24 28 32
BIT ERROR (dB)
RELATIVE GAIN SETTING (dB)
-1
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1
0 0.3 0.5 0.8 1 1.3 1.5
STEP ERROR (dB)
FREQUENCY (GHz)
[1] Tested with broadband bias tee on output J2, C7, C8 = 10,000pF ; L1 = 680nH
[2] Data taken on eval board as described in data sheet
HMC626LP5 / 626LP5E
v06.0709 0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, DC - 1 GHz
13 - 19
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
VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT
13
Bias Voltage & Current
Vdd (V) Idd (Typ.) (mA)
+4.5 4.7
+5.0 5.0
+5.5 5.3
Vs (V) Is (mA)
+5.0 176
Control Voltage Input Relative
Gain
Setting
V1
16 dB
V2
8dB
V3
4 dB
V4
2 dB
V5
1 dB
V6
0.5 dB
High High High High High High Reference
0 dB
High High High High High Low -0.5 dB
High High High High Low High -1 dB
High High High Low High High -2 dB
High High Low High High High -4 dB
High Low High High High High -8 dB
Low High High High High High -16 dB
Low Low Low Low Low Low -31.5 dB
Any combination of the above states will provide a relative gain
setting approximately equal to the sum of the bits selected.
Truth Table
HMC626LP5 / 626LP5E
v06.0709 0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, DC - 1 GHz
Control Voltage Table
State Vdd = +3V Vdd = +5V
Low 0 to 0.5V @ <1 μA 0 to 0.8V @ <1 μA
High 2 to 3V @ <1 μA 2 to 5V @ <1 μA
13 - 20
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
VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT
13
Absolute Maximum Ratings
Outline Drawing
RF Input Power [1] (At Max Gain
Setting) -10.5 dBm (T = +85 °C)
Bias Voltage (Vdd) +5.5 Vdc
Collector Bias Voltage (Vcc) 5.5 Vdc
Channel/Junction Temperature 150 °C
Continuous Pdiss (T = 85 °C)
(derate 19.8 mW/°C above 85 °C) [1] 1.29 W
Thermal Resistance 50.8 °C/W
Storage Temperature -65 to +150 °C
Operating Temperature -40 to +85 °C
[1] The Max RF Input Power Rating will increase by 0.5 dB for
every 0.5 dB reduction in gain to a maximum RF Input Power of
10 dBm.
NOTES:
1. LEADFRAME MATERIAL: COPPER ALLOY
2. DIMENSIONS ARE IN INCHES [MILLIMETERS]
3. LEAD SPACING TOLERANCE IS NON-CUMULATIVE.
4. PAD BURR LENGTH SHALL BE 0.15mm MAXIMUM.
PAD BURR HEIGHT SHALL BE 0.05mm MAXIMUM.
5. PACKAGE WARP SHALL NOT EXCEED 0.05mm.
6. ALL GROUND LEADS AND GROUND PADDLE MUST BE
SOLDERED TO PCB RF GROUND.
7. REFER TO HITTITE APPLICATION NOTE FOR SUGGESTED
LAND PATTERN.
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
Part Number Package Body Material Lead Finish MSL Rating Package Marking [3]
HMC626LP5 Low Stress Injection Molded Plastic Sn/Pb Solder MSL1 [1] H626
XXXX
HMC626LP5E RoHS-compliant Low Stress Injection Molded Plastic 100% matte Sn MSL1 [2] H626
XXXX
[1] Max peak re ow temperature of 235 °C
[2] Max peak re ow temperature of 260 °C
[3] 4-Digit lot number XXXX
Package Information
HMC626LP5 / 626LP5E
v06.0709 0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, DC - 1 GHz
13 - 21
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
VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT
13
Pin Descriptions
Pin Number Function Description Interface Schematic
1, 5, 9, 14, 16, 23,
24, 31 N/C These pins may be connected to RF/DC ground.
Performance will not be affected.
2, 20 RFin1, RFin2 This pin is DC coupled. An off chip DC blocking capacitor is
required.
4, 22 RFout1, RFout2
RF output and DC bias (Vcc) for the output stage of the
ampli ers. Ampli er bias provided via external bias tee as
shown in application circuit.
3, 7, 18, 21 GND These pins and package bottom
must be connected to RF/DC ground.
6, 19 ATTin,
ATTout
These pins are DC coupled and matched to 50 Ohms.
Blocking capacitors are required. Select value based
on lowest frequency of operation.
8, 10,
11, 12,
13, 15,
17
ACG1, ACG2,
ACG3, ACG4,
ACG5, ACG6,
ACG7
External capacitors to ground is required. Select value for
lowest frequency of operation. Place capacitor as close to
pins as possible.
25 - 30 V1 - V6 See truth table, control voltage
table and timing diagram.
32 Vdd Supply voltage
HMC626LP5 / 626LP5E
v06.0709 0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, DC - 1 GHz
13 - 22
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
VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT
13
Application Circuit
Top View
HMC626LP5 / 626LP5E
v06.0709 0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, DC - 1 GHz
13 - 23
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
VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT
13
Evaluation PCB
The circuit board used in the nal application should
use RF circuit design techniques. Signal lines
should have 50 ohm impedance while the package
ground leads and exposed paddle should be con-
nected directly to the ground plane similar to that
shown. A sufficient number of via holes should be
used to connect the top and bottom ground planes.
The evaluation circuit board shown is available from
Hittite upon request.
List of Materials for Evaluation PCB 117355 [1]
Item Description
J1 - J2 PCB Mount SMA Connector
J3 12 Pin DC Connector
J4 - J9 DC Pin
C1, C2, C9, C10 820 pF Capacitor, 0402 Pkg.
C3, C4 100 pF Capacitor, 0402 Pkg.
C5 - C8 330 pF Capacitor, 0402 Pkg.
C11 - C13 1000 pF Capacitor, 0402 Pkg.
C14, C15 2.2 μF Capacitor, CASE A Pkg.
R1, R2 1.8 Ohm Resistor, 0603 Pkg.
L1, L2 110 nH Inductor, 0603 Pkg.
U1 HMC626LP5(E) Variable Gain Ampli er
PCB [2] 118934 Evaluation PCB
[1] Reference this number when ordering complete evaluation PCB
[2] Circuit Board Material: Arlon 25FR
HMC626LP5 / 626LP5E
v06.0709 0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
VARIABLE GAIN AMPLIFIER, DC - 1 GHz
