HMC284MS8G
/
284MS8GE
v06.0607
SPDT NON-REFLECTIVE
SWITCH, DC - 3.5 GHz
Typical Applications
The HMC284MS8G / HMC284MS8GE is ideal for:
• Cellular/PCS Base Stations
• 2.4 GHz ISM
• 3.5 GHz Wireless Local Loop
Features
High Isolation: >45 dB
Positive control: 0/+5V
Non-Reflective Design
Ultra Small Pakcage: MSOP8G
Indluded in the HMC-DK005 Designers’ Kit
Functional Diagram
General Description
The HMC284MS8G & HMC284MS8GE are low-cost
SPDT switches in 8-lead grounded base MSOP pack-
ages. The design has been optimized to provide high
isolation with minimal insertion loss for medium and
low power applications. On-chip circuitry allows posi-
tive voltage control operation at very low DC currents
with control inputs compatible with CMOS and most
TTL logic families. In the “OFF” state, RF1 and RF2
are non-reflective. See reflective high isolation SPDT
version, HMC194MS8.
10
SWITCHES - SMT
Electrical Specifi cations,
T
A
= +25° C, Vctl = 0/+5 Vdc, 50 Ohm System
Parameter
Insertion Loss
RF1 & RF2
RF1 / RF2
RF1 / RF2
RF1 & RF2
Frequency
DC - 2.0 GHz
DC - 3.0 GHz
DC - 3.5 GHz
DC - 2.0 GHz
DC - 2.5 GHz
DC - 3.0 GHz
DC - 3.5 GHz
DC - 2.0 GHz
DC - 2.5 GHz
DC - 3.5 GHz
0.5 - 3.5 GHz
0.5 - 1.0 GHz
0.5 - 3.5 GHz
0.5 - 3.5 GHz
DC - 3.5 GHz
tRISE, tFALL (10/90% RF)
tON, tOFF (50% CTL to 10/90% RF)
40
60
ns
ns
41
38/41
34/36
30
21
13
10
10
20
18
43
Min.
Typ.
0.5
0.6
0.7
45
41/45
37/39
33
25
17
12
13
25
24
48
Max.
0.8
0.9
1.1
Units
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dBm
dBm
dBm
Isolation
Return Loss (On State)
Return Loss (Off State)
Input Power for 1 dB Compression
Input Third Order Intercept
(Two-Tone Input Powew = 0 dBm Each Tone)
Switching Speed
10 - 166
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
HMC284MS8G
/
284MS8GE
v06.0607
SPDT NON-REFLECTIVE
SWITCH, DC - 3.5 GHz
Insertion Loss
0
-0.5
Isolation
0
-10
ISOLATION (dB)
-20
-30
-40
-50
-60
RF 1
RF 2
INSERTION LOSS (dB)
-1
-1.5
-2
-2.5
-3
0
0.5
1
1.5
2
2.5
3
3.5
4
FREQUENCY (GHz)
+25 C
-40 C
+85 C
0
0.5
1
1.5
2
2.5
3
3.5
4
FREQUENCY (GHz)
10
SWITCHES - SMT
10 - 167
Return Loss
0
-5
RETURN LOSS (dB)
-10
-15
-20
-25
-30
-35
-40
0
0.5
1
1.5
2
2.5
3
3.5
4
FREQUENCY (GHz)
S11 (ON)
S22 (ON)
S22 (OFF)
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
HMC284MS8G
/
284MS8GE
v06.0607
SPDT NON-REFLECTIVE
SWITCH, DC - 3.5 GHz
Compression vs Frequency
Carrier at 900 MHz
CTL
Input
(Vdc)
+5
Input Power for 0.1
dB Compression
(dBm)
23
Input Power for 1.0
dB Compression
(dBm)
25
Carrier at 1900 MHz
Input Power for 0.1
dB Compression
(dBm)
22
Input Power for 1.0
dB Compression
(dBm)
24
Caution:
Do not operate continuously at RF power input
greater than 1 dB compression. (Vctl = 0/+5 Vdc).
Distortion vs Frequency
10
SWITCHES - SMT
Control Input
(Vdc)
+5
Third Order Intercept (dBm)
0 dBm Each Tone
900 MHz
48
1900 MHz
50
Truth Table
*Control Input Tolerances are +/-0.2 Vdc
Control Input*
A
(Vdc)
0
+5
B
(Vdc)
+5
0
Control Current
Ia
(uA)
-25
25
Ib
(uA)
25
-25
Signal Path State
RFC to
RF1
ON
OFF
RFC to
RF2
OFF
ON
DC blocks are required at ports RFC, RF1, RF2.
10 - 168
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
HMC284MS8G
/
284MS8GE
v06.0607
SPDT NON-REFLECTIVE
SWITCH, DC - 3.5 GHz
Absolute Maximum Ratings
RF Input Power (Vctl = 0/+5V)
Control Voltage Range
Hot Switch Power Level
(Vctl = 0/+5V)
Channel Temperature
Thermal Resistance
(Insertion Loss Path)
Thermal Resistance
(Terminated Path)
Storage Temperature
Operating Temperature
ESD Sensitivity (HBM)
+26 dBm
-0.2 to +7.5 Vdc
+18 dBm
150 °C
140 °C/W
190 °C/W
-65 to +150 °C
-40 to +85 °C
Class 1A
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
10
Outline Drawing
NOTES:
1. LEADFRAME MATERIAL: COPPER ALLOY
2. DIMENSIONS ARE IN INCHES [MILLIMETERS].
3. DIMENSION DOES NOT INCLUDE MOLDFLASH OF 0.15mm PER SIDE.
4. DIMENSION DOES NOT INCLUDE MOLDFLASH OF 0.25mm PER SIDE.
5. ALL GROUND LEADS AND GROUND PADDLE MUST BE SOLDERED TO
PCB RF GROUND.
Package Information
Part Number
HMC284MS8G
HMC284MS8GE
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]
Package Marking
[3]
H284
XXXX
H284
XXXX
[2]
[1] Max peak reflow temperature of 235 °C
[2] Max peak reflow temperature of 260 °C
[3] 4-Digit lot number XXXX
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
10 - 169
SWITCHES - SMT
HMC284MS8G
/
284MS8GE
v06.0607
SPDT NON-REFLECTIVE
SWITCH, DC - 3.5 GHz
Typical Application Circuit
10
SWITCHES - SMT
Notes:
1. Set A/B control to 0/+5V, Vdd = +5V and use HCT series logic to provide a TTL driver interface.
2. Control inputs A/B can be driven directly with CMOS logic (HC) with Vdd = +5 Volts applied to the CMOS logic gates.
3. DC blocking capacitors are required for each RF port as shown. Capacitor value determines lowest frequency of operation.
4. Highest RF signal power capability is acheived wiht Vdd = +7V and A/B set to 0/+7V.
5. Back side paddle must be connected to RF ground.
6. A grounded coplanar waveguide PCB layout technique is recommended to achieve high isolation. The component side
ground plane between RFC/grounded paddle and RF1/RF2 should be continuous, see below. There should be a continu-
ous ground plane under component side layout.
10 - 170
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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