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 T/R - SMT
6
HMC595A / 595AE
v01.0515
GaAs MMIC 3 WATT T/R 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 +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 V set to
+10V. The switch will operate properly (but at lower RF power
capability) at bias voltages down to +3V.
Evaluation Circuit Board
The circuit board used in the 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 and
package bottom should be connected directly to the
ground plane similar to that shown above. The eval-
uation circuit board shown above is available from
Analog Devices upon request.
Item Description
J1 - J3 PCB Mount SMA RF Connector
J4 - J6 DC Pin
C1 - C3 330 pF capacitor, 0402 Pkg.
R1, R2 1 kOhm Resistor, 0402 Pkg.
U1 HMC595A / 595AE T/R Switch
PCB
[2]
101659 Evaluation PCB
[1] Reference this number when ordering complete evaluation PCB
[2] Circuit Board Material: Rogers 4350
List of Materials for Evaluation PCB EV1HMC595A
[1]
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
For price, delivery, and to place orders: Analog Devices, Inc.,
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
Phone: 781-329-4700 • Order online at www.analog.com
Application Support: Phone: 1-800-ANALOG-D
