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HMC680LP4 / 680LP4E
v03.0609
BiCMOS MMIC 5-BIT DIGITAL VARIABLE GAIN AMPLIFIER, 30 - 400 MHz
Typical Applications
The HMC680LP4(E) is ideal for: * Cellular/3G Infrastructure * WiBro / WiMAX / 4G * Microwave Radio & VSAT * Test Equipment and Sensors * IF & RF Applications
Features
TTL/CMOS compatible parallel or latched parallel control interface High Output IP3: +40 dBm (At all gain settings) Low Noise Figure: 5 dB Wide Gain Control Range: 23 dB 24 Lead 4x4 mm SMT Package: 16 mm2 Excellent State & Step Accuracy (0.05 dB)
Functional Diagram
General Description
The HMC680LP4(E) is a digitally controlled variable gain amplifier which operates from 30 to 400 MHz, and can be programmed to provide -4 dB to +19 dB of gain, in 1 dB steps. The HMC680LP4(E) delivers noise figure of 5 dB in its maximum gain state, with output IP3 of up to +40 dBm in any state. This high linearity DVGA also provides a differential RF output which can be used to interface directly with SAW filters in Tx and Rx applications, and with digital to analog converters in Rx chains. The HMC680LP4(E) is housed in a RoHS compliant 4x4 mm QFN leadless package, and is CMOS/ TTL compatible.
13
VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT
Electrical Specifi cations, TA = +25 C, 50 Ohm System, Vdd = +5V
Parameter Frequency Range Gain (Maximum Gain State) Gain Control Range Input Return Loss Output Return Loss Gain Accuracy: (Referenced to Maximum Gain State) All Gain States Output Power for 1dB Compression Output Third Order Intercept Point (Two-Tone Output Power= +5 dBm Each Tone) [1] Output Second Order Intercept Point (Two-Tone Output Power= +5 dBm Each Tone) [1] Harmonics Step Accuracy (Referenced to Maximum Gain State) Noise Figure (max gain state) Switching Characteristics Control Supply Current Idd Amp Supply Current (RFOUTP) Amp Supply Current (RFOUTN) [1] Test frequency 50 MHz tRise, tFall (10/90% RF) tON, tOFF (50% CTL to 10/90% RF) 2nd Order 3rd Order 17 Min. Typ. 30 - 400 19 23 12 13 (0.15 + 3% of Gain Setting) Max. 23 25 40 65 70 75 0.2 5 11 13 4 122 122 Max. Units MHz dB dB dB dB dB dBm dBm dBm dBc dBc dB dB ns ns mA mA mA
5 135 135
13 - 58
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
HMC680LP4 / 680LP4E
v03.0609
BiCMOS MMIC 5-BIT DIGITAL VARIABLE GAIN AMPLIFIER, 30 - 400 MHz
Normalized Attenuation Maximum Gain vs. Frequency
25 NORMALIZED ATTENUATION (dB)
(Only Major States are Shown)
0 -5 -10
8 dB
20
GAIN (dB)
15
+25 C +85 C -40 C
-15 -20 -25 -30 -35
23 dB 16 dB
10
5
0 0 0.1 0.2 0.3 0.4 0.5 0.6 FREQUENCY (GHz)
0
0.1
0.2
0.3
0.4
0.5
0.6
FREQUENCY (GHz)
13
VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT
13 - 59
Input Return Loss
(Only Major States are Shown)
0 -5 RETURN LOSS (dB) -10 -15 -20 -25 -30
Maximum Attenuation I.L
Output Return Loss
(Only Major States are Shown)
0 -5 RETURN LOSS (dB) -10 -15
Maximum Attenuation I.L
-20 -25 -30
-35 -40 0 0.1 0.2 0.3 0.4 0.5 0.6 FREQUENCY (GHz)
0
0.1
0.2
0.3
0.4
0.5
0.6
FREQUENCY (GHz)
Bit Error vs. Frequency
(Only Major States are Shown)
2 1.5 1 BIT ERROR (dB)
1, 2, 4, 8, 16 dB
Bit Error vs. Attenuation State
5 4 3
Bit Error < 1dB, 400MHz And Below
0.5 0 -0.5 -1
23 dB
BIT ERROR (dB)
2 1 0 -1 -2 -3 -4 -5
30MHz
600MHz Bit Error > 1dB, 450MHz And Above
-1.5 -2 0 0.1 0.2 0.3 0.4 0.5 0.6 FREQUENCY (GHz)
0
4
8
12
16
20
24
ATTENUATION STATE (dB)
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
HMC680LP4 / 680LP4E
v03.0609
BiCMOS MMIC 5-BIT DIGITAL VARIABLE GAIN AMPLIFIER, 30 - 400 MHz
Relative Phase vs. Frequency Step Accuracy vs. Frequency
2 1.5 STEP ERROR (dB) 1 0.5 0 -0.5 -1 -1.5 -2 0 0.1 0.2 0.3 0.4 0.5 0.6 FREQUENCY (GHz)
1, 2, 4, 23 dB 8 dB 16 dB
(Only Major States are Shown)
80 60 RELATIVE PHASE (deg)
16, 23 dB
40
8 dB
20 0 -20
1, 2, 4 dB
-40 0 0.1 0.2 0.3 0.4 0.5 0.6 FREQUENCY (GHz)
13
VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT
50 45 40 35
Output IP3 vs. Temperature
(+5 dBm Output Power Per Tone)
Output P1dB vs. Temperature
40 35 30 P1dB (dBm) 25 20 15 10 5 0
-40C +25C +85C
IP3 (dBm)
30 25 20 15 10 5 0 0 0.1 0.2 0.3 0.4 0.5 0.6 FREQUENCY (GHz)
-40C +25C +85C
0
0.1
0.2
0.3
0.4
0.5
0.6
FREQUENCY (GHz)
Output IP2 vs. Temperature Noise Figure vs. Attenuation State
25
(+5 dBm Output Power Per Tone)
100
20 NOISE FIGURE (dB)
8dB
80
15
2dB 1dB
IP2 (dBm)
4dB
60
10
40
-40C +25C +85C
5
I.L.
20
0 0 0.2 0.4 0.6 0.8 1 FREQUENCY (GHz)
0 0 0.1 0.2 0.3 0.4 0.5 0.6 FREQUENCY (GHz)
13 - 60
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
HMC680LP4 / 680LP4E
v03.0609
BiCMOS MMIC 5-BIT DIGITAL VARIABLE GAIN AMPLIFIER, 30 - 400 MHz
Harmonics vs. Frequency
0
Supply Current vs. Temperature
280
-20 HARMONIC (dBc)
2nd Harmonic 3rd Harmonic
260 Id (ma)
-40
240
-60 220 -80
-40C +25C +85C
-100 0 0.1 0.2 0.3 0.4 0.5 0.6 FREQUENCY (GHz)
200 4.5
5 VOLTAGE (V)
5.5
Absolute Maximum Ratings
RF Input Power RF Output Power Digital Inputs (B0-B4, Latch Enable) Bias Voltage (Vdd) Channel Temperature Continuous Pdiss (T = 85 C) (derate 42 mW/C above 85 C) Thermal Resistance (channel to ground paddle) Storage Temperature Operating Temperature 20 dBm 22 dBm -0.5 to Vdd +0.5V 5.6 V 125 C 1.7 W 24 C/W -65 to +150 C -40 to +85 C
Truth Table
ATTENUATION (dB) 0 1 2 3 4 5 6 7 8 9 10 11 B4[1] 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 B3 [1] 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 X X X X X X X X B2 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 B1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 B0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
13
VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT
13 - 61
ELECTROSTATIC SENSITIVE DEVICE OBSERVE HANDLING PRECAUTIONS
12 13 14
Amp Bias Voltage
Vdd RF (V) 5V Idd (Typ.) (mA) 244
15 16 17 18 19
Control Voltage Table
State Low High Vdd = +3V 0 to 0.5V @ <1 A 2 to 3V @ <1 A Vdd = +5V 0 to 0.8V @ <1 A 2 to 5V @ <1 A
20 21 22 23
[1] Enabling B4 disables B3, the minimum attenuation is 16 dB
Control Interface:
The gain of HMC680LP4(E) is controlled by adjusting the state of the attenuator. The attenuator has a 5-bit parallel CMOS/TTL compatible interface. State of the attenuator can be set with respect to the truth table above.
Power on sequence:
The ideal power up sequence is: GND, Vdd, Digital inputs, RF inputs. Relative order of the digital inputs is not important as long as they are powered after VDD/GND. 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
HMC680LP4 / 680LP4E
v03.0609
BiCMOS MMIC 5-BIT DIGITAL VARIABLE GAIN AMPLIFIER, 30 - 400 MHz
Outline Drawing
13
VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT
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.
Package Information
Part Number HMC680LP4 HMC680LP4E Package Body Material Low Stress Injection Molded Plastic RoHS-compliant Low Stress Injection Molded Plastic Lead Finish Sn/Pb Solder 100% matte Sn MSL Rating MSL1 MSL1
[1]
[2]
Package Marking [3] H680 XXXX H680 XXXX
[1] Max peak reflow temperature of 235 C [2] Max peak reflow temperature of 260 C [3] 4-Digit lot number XXXX
13 - 62
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
HMC680LP4 / 680LP4E
v03.0609
BiCMOS MMIC 5-BIT DIGITAL VARIABLE GAIN AMPLIFIER, 30 - 400 MHz
Pin Descriptions
Pin Number Function Description Interface Schematic
1
IBIAS
Bias current to amplifier. External inductors required.
2, 5, 6, Package Bottom
N/C, GND
These pins and package bottom must be connected to RF/DC ground.
3
ISET
External bias resistor to adjust the current of the amplifier.
13
VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT
13 - 63
4, 18
Vdd
Power Supply
9, 10, 11, 12, 13
B4 - B0
Control inputs to digital attenuator. See Truth Table & Control Voltage Table.
7, 8
RFOUTP, RFOUTN AMPINN, AMPINP FB2, FB1
Balanced amplifier outputs. External components required Balanced Amplifier inputs. External components required.
20, 24
21, 23
Feedback capacitance for the amplifier.
22
LE
Common mode emitter inductor. The LE Pin requires high quality (less than 200mOhms resistance) inductor to ground. An inductance of 100nH is recommended. RF input to digital attenuator. DC blocking capacitor required.
14
RFIN
15, 16, 17
FC3 - FC1
External capacitors to ground are required. Place these capacitors close to the package.
19
ATTNOUT
RF output to digital attenuator. DC blocking capacitor required.
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
HMC680LP4 / 680LP4E
v03.0609
BiCMOS MMIC 5-BIT DIGITAL VARIABLE GAIN AMPLIFIER, 30 - 400 MHz
Application Circuit
13
VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT
13 - 64
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
HMC680LP4 / 680LP4E
v03.0609
BiCMOS MMIC 5-BIT DIGITAL VARIABLE GAIN AMPLIFIER, 30 - 400 MHz
Evaluation PCB
13
VARIABLE GAIN AMPLIFIERS - DIGITAL - SMT
13 - 65
List of Materials for Evaluation PCB 115585 [1]
Item J1 - J2 J3 C1 - C8, C11 - C14 C9 C10 C15 L1, L2 L3, L4 L5 R1 R2 - R6 R7, R8 T1, T2 U1 PCB [2] Description PCB Mount SMA Connector 12 Pin DC Connector 1000 pF Capacitor, 0402 Pkg. 100 pF Capacitor, 0402 Pkg. 10k pF Capacitor, 0402 Pkg. 4.7 F Tantalum Capacitor, Case A Size 680 nH Inductor, 0805 Pkg. 330 nH Inductor, 0603 Pkg. 100 nH Inductor, 0603 Pkg. 680 Ohm Resistor, 0603 Pkg. 39k Ohm Resistor, 0402 Pkg. 0 Ohm Resistor, 0402 Pkg. 1:1 RF Transformer, MA/COM SMT Balun (ETC1-1-13) HMC680LP4(E) Variable Gain Amplifier 115584 Evaluation PCB
The circuit board used in the final application should use RF circuit design techniques. Signal lines should have 50 ohm impedance while the package ground leads and exposed paddle should be connected 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.
[1] Reference this number when ordering complete evaluation PCB [2] Circuit Board Material: Arlon 25FR or Rogers 4350
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

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