THIS PAGE INTENTIONALLY LEFT BLANK
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, 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
1
HMC194AMS8 / 194AMS8E
v00.0812
GaAs MMIC SPDT SWITCH
DC - 3 GHz
General Description
Features
Functional Diagram
Ultra Small Package: MSOP8
High Isolation: 50 dB
Positive Control: 0/+3V to 0/+7V
Electrical Specications, TA = +25° C, Vctl = 0/+5 Vdc, 50 Ohm System
Typical Applications
The HMC194AMS8 /HMC194AMS8E is ideal for:
• Cellular/PCS Base Stations
• Portable Wireless
• MMDS & WirelessLAN
The HMC194AMS8 & HMC194AMS8E are low-cost
SPDT switches in 8-lead MSOP packages for use in
applications which require high isolation between two
RF paths. The devices can control signals from DC to
3 GHz and have been optimized to provide extremely
high isolation with minimal insertion loss in medium
and low power applications. On chip circuitry allows
positive voltage control operation at very low DC cur-
rents with control inputs compatible with CMOS and
most TTL logic families. RF1 and RF2 are reective
opens when “OFF”.
Parameter Frequency Min. Typ. Max. Units
Insertion Loss
DC - 2.0 GHz
DC - 2.5 GHz
DC - 3.0 GHz
0.5
0.5
0.5
0.9
1.0
1.1
dB
dB
dB
Isolation
DC - 1.0 GHz
DC - 2.0 GHz
DC - 2.5 GHz
DC - 3.0 GHz
50
42
31
24
55
45
38
30
dB
dB
dB
dB
Return Loss DC - 2.0 GHz
DC - 3.0 GHz
26
24
dB
dB
Input Power for 1 dB Compression
0/+5V Control 0.5 - 3.0 GHz 24 28 dBm
Input Third Order Intercept
(Two-tone Input Power = +7 dBm Each Tone) 0/+5V Control 0.5 - 3.0 GHz 49 53 dBm
Switching Characteristics DC - 3.0 GHz
tRISE, tFALL (10/90% RF)
tON , tOFF (50% CTL to 10/90% RF)
3
20
ns
ns
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, 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
2
HMC194AMS8 / 194AMS8E
v00.0812
GaAs MMIC SPDT SWITCH
DC - 3 GHz
Insertion Loss Isolation
Return Loss
Input 0.1 and 1.0 dB
Compression vs. Control Voltage
Input Third Order
Intercept Point vs. Control Voltage
Truth Table
*Control Input Voltage Tolerances are ± 0.2 Vdc.
Control Input* Control Current Signal Path State
A
(Vdc)
B
(Vdc)
Ia
(uA)
Ib
(uA)
RF to
RF1
RF to
RF2
0+3 -0.05 +0.05 ON OFF
+3 0+0.05 -0.05 OFF ON
0+5 -0.6 +0.6 ON OFF
+5 0+0.6 -0.6 OFF ON
0+7 -5 +5 ON OFF
+7 0+5 -5 OFF ON
-70
-60
-50
-40
-30
-20
-10
0
0 1 2 3
RF1
RF2
ISOLATION (dB)
FREQUENCY (GHz)
-3
-2.5
-2
-1.5
-1
-0.5
0
0 1 2 3
INSERTION LOSS (dB)
FREQUENCY (GHz)
-40
-30
-20
-10
0
0 1 2 3
S11
S22
RETURN LOS S (dB)
FREQUENCY (GHz)
0
10
20
30
40
50
60
3 5 7
900 MHz
1900 MHz
3000 MHz
THIRD ORDER INTERCEPT (dBm)
Control Input (Vdc)
0
4
8
12
16
20
24
28
32
36
3 5 7
P0.1dB at 900 MHz
P1dB at 900 MHz
P0.1dB at 1900 MHz
P1dB at 1900 MHz
P0.1dB at 3000 MHz
P1dB at 3000 MHz
P 0.1dB & P1dB COMPRESSION (dBm)
Control Input (Vdc)
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, 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
3
HMC194AMS8 / 194AMS8E
v00.0812
GaAs MMIC SPDT SWITCH
DC - 3 GHz
Absolute Maximum Ratings
Outline Drawing
RF Input Power (Vctl= 0V/+5V) +27 dBm
Control Voltage Range (A & B) -0.2 to +7.5 Vdc
Hot Switch Power Level (Vctl= 0V/+5V) +24 dBm
Channel Temperature 150 °C
Continuous Pdiss (T= 85 °C)
(derate 4.6 mW/°C above 85 °C) 300 mW
Thermal Resistance 216 °C/W
Storage Temperature -65 to +150 °C
Operating Temperature -40 to +85 °C
ESD Sensitivity (HBM) Class 1A
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
Note: DC blocking capacitors are required at ports RFC, RF1 and
RF2. Their value will determine the lowest transmission frequency.
Part Number Package Body Material Lead Finish MSL Rating Package Marking [3]
HMC194AMS8 Low Stress Injection Molded Plastic Sn/Pb Solder MSL1 [1] H194A
XXXX
HMC194AMS8E RoHS-compliant Low Stress Injection Molded Plastic 100% matte Sn MSL1 [2] H194A
XXXX
[1] Max peak reow temperature of 235 °C
[2] Max peak reow temperature of 260 °C
[3] 4-Digit lot number XXXX
Package Information
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.
6. CLASSIFIED AS MOISTURE SENSITIVITY LEVEL (MSL) 1.
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, 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
4
HMC194AMS8 / 194AMS8E
v00.0812
GaAs MMIC SPDT SWITCH
DC - 3 GHz
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 3 to 7 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 Control set to 0/+7V.
Evaluation Circuit Board
The circuit board used in the nal application
should be generated with proper RF circuit design
techniques. Signal lines at the RF port should
have 50 Ohm impedance and the package ground
leads should be connected directly to the ground
plane similar to that shown above. The evalua-
tion circuit board shown above is available from
Hittite Microwave Corporation upon request.
List of Materials for
Evaluation PCB 105143 [1]
Item Description
J1 - J3 PC Mount SMA RF Connector
J4 - J6 DC Pin
C1 - C3 100 pF capacitor, 0402 Pkg.
R1, R2 100 resistor, 0402 Pkg.
U1 HMC194AMS8 / 194AMS8E
SPDT Switch
PCB [2] 107821 Evaluation PCB
[1] Reference this number when ordering complete evaluation PCB
[2] Circuit Board Material: Rogers 4350
