14
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
SWITCHES - SPDT - SMT
14 - 1
GaAs MMIC SOT26 SPDT
SWITCH, DC - 3 GHz
General Description
Features
Functional Diagram
RoHS-Compliant Product
Low Insertion Loss: 0.4 dB
Ultra Small Package: SOT26
Input IP3: +45 dBm
Positive Control: 0/+3V @ 3 µA
Included in the HMC-DK005 Designer’s Kits
Electrical Specications, TA = +25° C, Vctl = 0/+3 to +8 Vdc
Typical Applications
The HMC221A(E) is ideal for:
• ISM Applications
• PCMCIA Wireless Cards
• Cellular Applications
The HMC221A(E) is a low-cost SPDT switch in
a 6-lead SOT26 plastic package for use in gen-
eral switching applications which require very low
insertion loss and very small size. This device
can control signals from DC to 3 GHz and is
especially suited for 900 MHz, 1.8 - 2.2 GHz, and
2.4 GHz ISM applications with less than 1 dB loss.
The design provides exceptional insertion loss perfor-
mance, ideal for lter and receiver switching. RF1 and
RF2 are reective shorts when “Off”. The two control
voltages require a minimal amount of DC current and
offer compatibility with most CMOS & TTL logic fami-
lies. See HMC197A(E) for same performance in an
alternate SOT26 pin-out.
Parameter Frequency Min. Typ. Max. Units
Insertion Loss
DC - 1.0 GHz
DC - 2.0 GHz
DC - 2.5 GHz
DC - 3.0 GHz
0.4
0.45
0.6
0.8
0.7
0.8
0.9
1.1
dB
dB
dB
dB
Isolation
DC - 1.0 GHz
DC - 2.0 GHz
DC - 2.5 GHz
DC - 3.0 GHz
24
24
21
14
28
28
25
18
dB
dB
dB
dB
Return Loss
DC - 1.0 GHz
DC - 2.0 GHz
DC - 2.5 GHz
DC - 3.0 GHz
20
17
16
11
23
22
20
15
dB
dB
dB
dB
Input Power for 1 dB Compression
(Vctl = 0/+5V)
0.5 - 1.0 GHz
0.5 - 3.0 GHz
25
23
30
29
dBm
dBm
Input Third Order Intercept
(Vctl = 0/+5V) (Two-tone Input Power = +7 dBm Each Tone)
0.5 - 1.0 GHz
0.5 - 3.0 GHz
40
38
45
43
dBm
dBm
Switching Characteristics DC - 3.0 GHz
tRISE, tFALL (10/90% RF)
tON, tOFF (50% CTL to 10/90% RF)
3
10
ns
ns
v01.0210
HMC221A / 221AE
14
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
SWITCHES - SPDT - SMT
14 - 2
Return Loss
Insertion Loss Isolation
GaAs MMIC SOT26 SPDT
SWITCH, DC - 3 GHz
Input 0.1 and 1.0 dB
Compression vs. Control Voltage
Input Third Order
Intercept Point vs. Control Voltage
v01.0210
HMC221A / 221AE
-3
-2.5
-2
-1.5
-1
-0.5
0
0 0.5 1 1.5 2 2.5 3
INSERTION LOSS (dB)
FREQUENCY (GHz)
-50
-40
-30
-20
-10
0
0 0.5 1 1.5 2 2.5 3
RETURN LOSS (dB)
FREQUENCY (GHz)
44
46
48
50
52
54
2 3 4 5 6 7 8 9
900 MHz
1900 MHz
IP3 (dBm)
CONTROL INPUT (V)
15
20
25
30
35
3456789
P1dB & P0.1dB (dBm)
CONTROL INPUT (V)
1 dB at 1900 MHz
1 dB at 900 MHz
0.1 dB at 1900 MHz
0.1 dB at 900 MHz
-50
-40
-30
-20
-10
0
0 0.5 1 1.5 2 2.5 3
ISOLATION (dB)
FREQUENCY (GHz)
Distortion vs. Control Voltage
Truth Table
*Control Input Voltage Tolerances are ± 0.2 Vdc.
Control Input Third Order Intercept (dBm) +7 dBm Each Tone
(Vdc) 900 MHz 1900 MHz
+3 51 48
+5 51 49
+8 51 50
Control Input* Control Current Signal Path State
A
(Vdc)
B
(Vdc)
Ia
(µA)
Ib
(µA)
RF to
RF1
RF to
RF2
0 +3 -3 3 ON OFF
+3 0 3 -3 OFF ON
0 +5 -5 5 ON OFF
+5 0 5 -5 OFF ON
0 +8 -32 32 ON OFF
+8 0 32 -32 OFF ON
14
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
SWITCHES - SPDT - SMT
14 - 3
Compression vs. Control Voltage
Caution: Do not operate in 1dB compression at power levels above
+31 dBm (Vctl = +5 Vdc) and do not “hot switch” power levels
greater than +20 dBm (Vctl = +5Vdc). DC blocks are required at
ports RFC, RF1 and RF2.
Carrier at 900 MHz Carrier at 1900 MHz
Control
Input
Input Power
for 0.1 dB
Compression
Input Power
for 1 dB
Compression
Input Power
for 0.1 dB
Compression
Input Power
for 1.0 dB
Compression
(Vdc) (dBm) (dBm) (dBm) (dBm)
+3 21 24 21 24
+5 28 30 27 30
+8 32 34 31 33
GaAs MMIC SOT26 SPDT
SWITCH, DC - 3 GHz
v01.0210
HMC221A / 221AE
Absolute Maximum Ratings
Outline Drawing
Control Voltage Range (A & B) -0.2 to +12 Vdc
Storage Temperature -65 to +150 °C
Operating Temperature -40 to +85 °C
ESD Sensitivity (HBM) Class 1A
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
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 MUST BE SOLDERED TO PCB RF GROUND.
Package Information
Part Number Package Body Material Lead Finish MSL Rating Package Marking
HMC221A Low Stress Injection Molded Plastic Sn/Pb Solder MSL1 [1] 221A
XXXX
HMC221AE RoHS-compliant Low Stress Injection Molded Plastic 100% matte Sn MSL1 [2] 221AE
XXXX
[1] Max peak reow temperature of 235 °C
[2] Max peak reow temperature of 260 °C
14
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
SWITCHES - SPDT - SMT
14 - 4
GaAs MMIC SOT26 SPDT
SWITCH, DC - 3 GHz
v01.0210
HMC221A / 221AE
Typical Application Circuit
Notes:
1. Set logic gate and switch Vdd = +3V to +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 of 5 to 8 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 achieved with Vdd = +8V
and A/B set to 0/+8V.
Evaluation Circuit Board
The circuit board used in the application should
be generated with proper RF circuit design tech-
niques. Signal lines at the RF port should have
50 Ohm impedance and the package ground leads
and package bottom should be connected directly
to the ground plane similar to that shown above.
The evaluation circuit board shown above is avail-
able from Hittite Microwave Corporation upon
request.
List of Materials for Evaluation PCB 101675 [1]
Item Description
J1 - J3 PCB Mount SMA RF Connector
J4 - J7 DC Pin
C1 - C3 330 pF Capacitor, 0402 Pkg.
U1 HMC221A / HMC221AE SPDT Switch
PCB [2] 101659 Evaluation PCB
[1] Reference this number when ordering complete evaluation PCB
[2] Circuit Board Material: Rogers 4350