GaAs, MMIC Fundamental Mixer,
2.5 GHz to 7.0 GHz
Data Sheet
HMC557A
FEATURES
FUNCTIONAL BLOCK DIAGRAM
Conversion loss: 8 dB
LO to RF isolation: 50 dB
LO to IF isolation: 35 dB
NIC
1
2
3
4
5
6
18 NIC
17 GND
16 RF
Input third-order intercept (IP3): 18 dBm
Input second-order intercept (IP2): 55 dBm
LO port return loss: 8 dBm
GND
LO
GND
NIC
15 GND
14 NIC
13 NIC
RF port return loss: 10 dBm
NIC
Passive double balanced topology
Wide IF bandwidth: dc to 3 GHz
24-terminal ceramic leadless chip carrier package
PACKAGE
BASE
GND
NIC = NO INTERNAL CONNECTION.
APPLICATIONS
Figure 1.
WiMAX and fixed wireless
Point to point radios
Point to multipoint radios
Test equipment and sensors
Military end use
GENERAL DESCRIPTION
The HMC557A provides excellent local oscillator (LO) to radio
frequency (RF) and LO to intermediate frequency (IF) isolation
due to optimized balun structures. The RoHS-compliant
HMC557A eliminates the need for wire bonding and is compatible
with high volume surface-mount manufacturing techniques.
The HMC557A is a general-purpose, double balanced mixer in
a 24-terminal, ceramic leadless chip carrier, RoHS-compliant
package. The device can be used as an upconverter or down-
converter from 2.5 GHz to 7.0 GHz. This mixer is fabricated in
a gallium arsenide (GaAs) metal semiconductor field effect
transistor (MESFET) process and requires no external
components or matching circuitry.
Rev. C
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