For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, 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
FREQUENCY DIVIDERS & DETECTORS - SMT
4
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General Description
Features
Functional Diagram
Typical Applications
6 GHz LOW NOISE PROGRAMMABLE
DIVIDER (N = 1 to 4)
HMC905LP3E
v00.0310
The HMC905LP3E is a SiGe BiCMOS low noise
programmable frequency divider in a 3x3 mm lead-
less surface mount package. The circuit can be pro-
grammed to divide from N = 1 to N = 4 in the 400 MHz
to 6 GHz input frequency range. The high level out-
put power (up to 6 dBm single ended) with a very low
SSB phase noise and 50% duty cycle makes this
device ideal for low noise clock generation, LO
generation and LO drive applications. Congurable
bias and output power controls allow current
consumption and output power control. The device
incorporates a power down feature, good input
to output isolation and fast start up time. The
HMC905LP3E can be included into fast switching
“ping-pong” applications.
Low Noise Floor:
-164 dBc/Hz at 10 MHz Offset for N = 4
Programmable Frequency Divider, N = 1, 2, 3 or 4
400 MHz to 6 GHz Input Frequency Range
Up to +6 dBm Output Power
Sleep Mode: Consumes <1 µA
16 Lead 3X3 mm SMT Package: 9mm2
Electrical Specications, TA = +25° C, Vcc = +3.3V, Zo = 50Ω
The HMC905LP3E is ideal for:
• LO Generation with Low Noise Floor
• Software Dened Radios
• Clock Generators
• Fast Switching Synthesizers
• Military Applications
• Test Equipment
• Sensors
Parameter Conditions Min. Typ. Max. Units
RF Input Characteristics
RF Input Frequency Single-ended input 400 6000 MHz
RF Input Power Single-ended input 0 6 10 dBm
Divider Output Characteristics
Output Power (Single-ended Out) -Typically, 50 ohms load resistors connected to Vcc
- 1 bit programmable (CTRL digital signal) [1] -2 3 6 dBm
SSB Phase Noise @ 10 kHz Offset
+6 dBm Input Power, 6 GHz input,
Single-Ended Input and Output, Divide-by-4 [2]
-150 dBc/Hz
SSB Phase Noise @ 100 kHz Offset -158 dBc/Hz
SSB Phase Noise @ 10 MHz Offset -164 dBc/Hz
Start Up Time EN bit from OFF to ON State (0V to Vcc) 200 ns
Power Down Time EN bit from ON to OFF State (Vcc to 0V) 20 ns
Setting Time at Division Ratio Change Delay from divide ratio change
to output frequency change 25 ns
[1] See typical supply currents vs. BIAS0, BIAS1, CTRL bits table
[2] See Residual Phase Noise plot
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, 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
FREQUENCY DIVIDERS & DETECTORS - SMT
4
4 - 2
Electrical Specications, TA = +25° C, Vcc = +3.3V, Zo = 50Ω (Continued)
HMC905LP3E
v00.0310
6 GHz LOW NOISE PROGRAMMABLE
DIVIDER (N = 1 to 4)
Input Sensitivity Window
Phase Noise for 3 Cascaded
HMC905LP3E from 6 GHz VCO
Residual Phase Noise
Divide by 1, 2, 3 & 4 [2]
Parameter Conditions Min. Typ. Max. Units
Isolation SE Input to SE Output EN bit OFF -80 -30 dBc
Duty Cycle for Differential Mode 50 %
Logic Inputs
VIH Input High Voltage 1.5 3.3 V
VIL Input Low Voltage 0 0.8 V
Power Supplies
Vcc
Analog Supply
(Low Noise LDO for good phase noise -
HMC860LP3E)
3.15 3.3 3.45 V
Current Consumption Total current vs. BIAS and CTRL bits [1] 82 100 125 mA
Sleep Current EN = 0V 1 µA
[1] The bias bits combination BIAS1 BIAS0 = 1 1 is not recommended
[2] Fin = 6 GHz, Pin = 6 dBm, CTRL = 1, BIAS1 BIAS0 = 01
-20
-15
-10
-5
0
5
10
0 1 2 3 4 5 6 7
BIAS1BIAS0=01
BIAS1BIAS0=00
BIAS1BIAS0=01
Operating Window
INPUT FREQUENCY (GHz)
INPUT POWER (dBm)
Recommended
Operating Window
-170
-150
-130
-110
-90
-70
-50
-30
-10
10 100 1000 104105106107
VCO IN
Div By 4
Div By 16
Div By 64
OFFSET FREQUENCY (Hz)
SSB PHASE NOISE (dBc/Hz)
-170
-160
-150
-140
-130
-120
-110
10 100 1000 104105106107108
Div By 1
Div By 2
Div By 3
Div By 4
OFFSET FREQUENCY (Hz)
SSB PHASE NOISE (dBc/Hz)
Output Phase Noise vs. Input Power
Divide-by-4
-170
-160
-150
-140
-130
-120
-110
-100
-90
1000 104105106107
Source IN
Div By 4 0dBm
Div By 4 3dBm
Div By 4 6dBm
Div By 4 9dBm
OFFSET FREQUENCY (Hz)
SSB PHASE NOISE (dBc/Hz)
All data plots taken on Evaluation Board (schematic on page 10) single-ended with the unused
output port 50 ohms terminated, Vcc = +3.3V, Ta=+25 °C, except stated otherwise
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, 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
FREQUENCY DIVIDERS & DETECTORS - SMT
4
4 - 3
HMC905LP3E
v00.0310
6 GHz LOW NOISE PROGRAMMABLE
DIVIDER (N = 1 to 4)
Pout vs. Division Ratio
Output Power vs. Input Power Level
Divide-by-4
Output Power vs. Voltage Supply
Divide-by-4
Output Power vs. Temperature
Divide-by-4
[1] CTRL = 0, BIAS1, BIAS1 BIAS0 = 00, Pin = 6 dBm
-10
-5
0
5
10
012345678
Div by 4
Div by 3
Div by 2
Div by 1
INPUT FREQUENCY (GHz)
OUTPUT POWER (dBm)
CTRL=1, BIAS1BIAS0=01
-10
-5
0
5
10
012345678
6dBm
3dBm
9dBm
INPUT FREQUENCY (GHz)
OUTPUT POWER (dBm)
CTRL=1, BIAS1BIAS0=01
-10
-5
0
5
10
012345678
3.3V
3.15V
3.45V
INPUT FREQUENCY (GHz)
OUTPUT POWER (dBm)
CTRL=1, BIAS1BIAS0=01
-10
-5
0
5
10
012345678
+25°C 101
+85°C 101
-40°C 101
+25°C 000
+85°C 000
-40°C 000
INPUT FREQUENCY (GHz)
OUTPUT POWER (dBm)
CTRL=1, BIAS1BIAS0=01->101
CTRL=0, BIAS1BIAS0=00->000
Pout Divide-by-4 vs. CTRL & BIAS
-10
-5
0
5
10
012345678
CTRL=0, BIAS=00
CTRL=1,BIAS=00
CTRL=0,BIAS=01
CTRL=1,BIAS=01
INPUT FREQUENCY (GHz)
OUTPUT POWER (dBm)
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, 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
FREQUENCY DIVIDERS & DETECTORS - SMT
4
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H2, H3, H4, H5 Harmonics, Divide-by-1 [1] H2, H3, H4, H5 Harmonics, Divide-by-2 [1]
HMC905LP3E
v00.0310
6 GHz LOW NOISE PROGRAMMABLE
DIVIDER (N = 1 to 4)
[1] CTRL = 0, BIAS1, BIAS1 BIAS0 = 00, Pin = 6 dBm
Input to Output Isolation
H2, H3, H4, H5 Harmonics, Divide-by-3 [1] H2, H3, H4, H5 Harmonics, Divide-by-4 [1]
-50
-40
-30
-20
-10
0
0 1 2 3 4 5 6 7
H2
H3
H4
H5
INPUT FREQUENCY (GHz)
HARMONICS DIVIDE-BY-1 (dBc)
CTRL=0,BIAS1BIAS0=00
-70
-60
-50
-40
-30
-20
-10
0
0 1 2 3 4 5 6 7
H2
H3
H4
H5
INPUT FREQUENCY (GHz)
HARMONICS DIVIDE-BY-2 (dBc)
-70
-60
-50
-40
-30
-20
-10
0
0 1 2 3 4 5 6 7
H2
H3
H4
H5
INPUT FREQUENCY (GHz)
HARMONICS DIVIDE-BY-3 (dBc)
-80
-70
-60
-50
-40
-30
-20
0 1 2 3 4 5 6 7
INPUT FREQUENCY (GHz)
INPUT OUTPUT ISOLATION (dBc)
-50
-40
-30
-20
-10
0
0 1 2 3 4 5 6 7
H2
H3
H4
H5
INPUT FREQUENCY (GHz)
HARMONICS DIVIDE-BY-4 (dBc)
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, 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
FREQUENCY DIVIDERS & DETECTORS - SMT
4
4 - 5
HMC905LP3E
v00.0310
6 GHz LOW NOISE PROGRAMMABLE
DIVIDER (N = 1 to 4)
Absolute Maximum Ratings
RF Input Power 12 dBm
Supply Voltage (Vcc) 3.6V
Control Inputs
(B0, B1, CTRL, Bias0, EN) 3.6V
Junction Temperature 125 °C
Continuous Pdiss (T = 85 °C)
(derate 33 mW/ °C above 85 °C) 1.3 W
Thermal Resistance
(Junction to ground paddle) 30 °C/W
Storage Temperature -65 to +125 °C
Operating Temperature -40 to +85 °C
ESD Sensitivity (HBM) Class 1A
Typical Supply Current vs. EN, BIAS0, BIAS1 & CTRL Bits
Digital Control Input Voltages
EN CTRL BIAS1 BIAS0 3.3V Supply Typ.
Current (mA)
Pout Typ.
(dBm) Noise Floor
1 0 0 0 84 1.5 Low
1 0 0 1 105 4.8
1 0 1 0 98 3.9
1 1 0 0 100 2.4 Better
1 1 0 1 120 6.3 Best
1 1 1 0 113 5.3
0 x x x 0.001 -55
Note: Currents for the divide-by-4 option, 2 GHz and 6 dBm input and 3.3V; for Vcc voltage supply from
3.15V to 3.45V, the HMC905LP3E total current is varying with a maximum of ~8% around typical values.
With temperature, the total current is changing from +25°C to -40°C/+85°C with about ±3%.
State B0, B1, CTRL, BIAS1, BIAS0, EN
Low 0 to 0.8V
High 1.5V to 3.3V
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
Programming Truth Table
for Frequency Division Ratios
B1 B0 Divide-by
001
012
103
114
0 = Logic Low
1 = Logic High
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, 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
FREQUENCY DIVIDERS & DETECTORS - SMT
4
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HMC905LP3E
v00.0310
6 GHz LOW NOISE PROGRAMMABLE
DIVIDER (N = 1 to 4)
Outline Drawing
Part Number Package Body Material Lead Finish MSL Rating Package Marking [1]
HMC905LP3E RoHS-compliant Low Stress Injection Molded Plastic 100% matte Sn MSL1 [2] 905
XXX
[1] 4-Digit lot number XXXX
[2] Max peak reow temperature of 260 °C
Package Information
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
PCB LAND PATTERN.
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, 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
FREQUENCY DIVIDERS & DETECTORS - SMT
4
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HMC905LP3E
v00.0310
6 GHz LOW NOISE PROGRAMMABLE
DIVIDER (N = 1 to 4)
Pin Description
Pin Number Function Description Interface Schematic
1 Vcc +3.3V Voltage Supply
2 RFINP RF Positive Input.
Input is DC coupled, external DC blocks required.
3 RFINN RF Negative Input.
Input is DC coupled, external DC blocks required.
4 GND This pin must be connected to RF/DC ground.
5 B0 Division ratio (LSB)
See programming truth table.
6 B1 Division ratio (MSB)
See programming truth table.
7 CTRL Divider Output Buffer Power Control
13 BIAS1 Divider Core Bias Control
14 BIAS0 Divider Core Bias Control
15 EN Chip Enable
8, 9, 12, 16 N/C No connection required. This pin may be
connected to ground, without affecting performance.
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, 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
FREQUENCY DIVIDERS & DETECTORS - SMT
4
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Pin Description (Continued)
HMC905LP3E
v00.0310
6 GHz LOW NOISE PROGRAMMABLE
DIVIDER (N = 1 to 4)
Pin Number Function Description Interface Schematic
10 IOUTN Divider Negative Output, Open Drain.
Typically 50 Ohms connected to Vcc.
11 IOUTP Divider Positive Output, Open Drain.
Typically 50 Ohms connected to Vcc.
Application Note:
The HMC905LP3E is a high performance RF divider. Such dividers are high gain devices with internal feedback. The
device will oscillate if used with AC coupled RF inputs and if no RF input is applied. Normally, if the RF input signal is
removed the device should be disabled, or it should be placed in divide by 1 mode. The device is stable in divide by
one mode with no RF input. The device will oscillate in divide 2, 3, or 4 modes with no RF input. In general, very small
RF input levels will stop all oscillations. At the minimum rated RF input sensitivity level or higher, no oscillations or spu-
rious signals exist and excellent low noise performance is achieved. For input frequency lower than 400 MHz, square
wave input signal is recommended. For applications where the input frequency is bigger than ~5.5 GHz, it is recom-
mended either to use differential drive, or to increase the divider core current (bias settings BIAS1BIAS0=01 or 10).
For single ended applications, apply the signal on the positive input RFinp and terminate the unused output with 50
ohms.
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, 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
FREQUENCY DIVIDERS & DETECTORS - SMT
4
4 - 9
HMC905LP3E
v00.0310
6 GHz LOW NOISE PROGRAMMABLE
DIVIDER (N = 1 to 4)
Evaluation PCB
List of Materials for Evaluation PCB 126830 [1]
Item Description
J3 DC Connector
J1, J4, J7, J8 SMA SRI Connector
C1, C2, C10 - C12, C18 1nF Capacitor, 0402 Pkg
C3, C6, C9 100nF Capacitor, 0402 Pkg
C5 10uF Capacitor, 1206 Pkg
C8 10pF Capacitor, 0402 Pkg
R1, R7 51 Ohms, Resistor, 0402 Pkg
R2 - R6, R9 100 kOhms, Resistor, 0402 Pkg
TP1, TP3, TP4 PC Compact SMT
U1 HMC905LP3E Programmable Divider
PCB [2] 126828 Eval Board
[1] Reference this number when ordering complete evaluation PCB
[2] Circuit Board Material: Rogers 4350 or Arlon 25FR
The circuit board used in the application should
use RF circuit design techniques. Signal lines should
have 50 ohm impedance while the package ground
leads and backside ground 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.
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, 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
FREQUENCY DIVIDERS & DETECTORS - SMT
4
4 - 10
HMC905LP3E
v00.0310
6 GHz LOW NOISE PROGRAMMABLE
DIVIDER (N = 1 to 4)
Evaluation PCB Schematic