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Description
The HMMC-5626 is a broadband GaAs MMIC Traveling Wave Amplifier designed for high gain and moderate output power over the full 2 to 26.5 GHz frequency range. Seven MESFET cascode stages provide a flat gain response, making the TC700P an ideal wideband gain block.
Absolute Maximum Ratings1
Symbol |
Parameters/conditions |
Minimum |
Maximum |
Units |
VDD |
Positive Drain Voltage (biased through RFOUT) |
|
8.0 |
Volts |
IDD |
Total Drain Current on RFOUT |
|
150 |
mA |
VG1 |
First Gate Voltage |
-5 |
0 |
Volts |
IG1 |
First Gate Current |
-9 |
+5 |
mA |
PDC |
DC Power Dissipation |
|
1.2 |
W |
PIN |
CW Input Power |
|
23 |
dBm |
Tstg |
Storage Temperature |
-65 |
150 |
°C |
Tassy3 |
Max Solder Reflow Temperature (max. 3 cycles @ 30 sec./cycle) |
|
260 |
°C |
Tthermocouple |
Max Thermocouple Temperature |
|
+77 |
°C |
DC Specifications/Physical Properties1
Symbol |
Parameters/conditions |
Minimum |
Typical |
Maximum |
Units |
IDSS |
Saturated Drain Current (VDD = 7.0V, VG1 = 0.0V, VG2 = Open Circuit) |
|
150 |
150 |
mA |
VP |
First Gate Pinch-off Voltage (VDD = 7.0V, IDD = 16mA, VG2 = Open Circuit) |
-3.5 |
-1.5 |
-0.5 |
Volts |
IDSOFF(VG1) |
First Gate Pinch-Off Current (VDD = 7.0V, VG1 = -3.5V, VG2 = Open Circuit) |
|
4 |
|
mA |
Applications
The HMMC-5626 series of traveling wave amplifiers are designed for use as general purpose wideband gain blocks in communication systems and microwave instrumentation. They are ideally suited for broadband applications requiring a flat gain response and excellent port matches over a 2 to 26.5 GHz frequency range. Dynamic gain control and low–frequency extension capabilities are designed into these devices.
It is characteristic of traveling wave amplifiers that S22 tends to 0dB and greater out of band. This is the design trade–off for the broadband performance of TWAs. As a consequence, TWAs are not necessarily unconditionally stable out of band. This means that if a TWA is followed by a reflective low–pass filter, oscillations can occur. This phenomenon is exacerbated by low temperature where the gain is higher.
Biasing and Operation
These amplifiers are biased with a single positive drain supply applied to RFOUT(VDD) and a single negative gate supply (VG1). The recommended bias conditions for the HMMC-5626 are VDD(RFOUT) = 7.0V, IDD(RFOUT) = 150mA for best overall performance. To achieve this drain current level, VG1 is typically biased between - 0.2V and -0.5V. No other bias supplies or connections to the device are required for 2 to 26.5 GHz operation.
The auxiliary gate and drain contacts are used only for low frequency performance extension below » 1.0 GHz. When used, these contacts must be AC coupled only. (Do not attempt to apply bias to these pads.)
RoHS Compliance
This part is RoHS compliant, meeting the requirements of the EU Restriction of Hazardous Substances Directive 2002/95/EC, commonly known as RoHS. Six substances are regulated: lead, mercury, cadmium, chromium VI (hexavalent chromium, polybrominated biphenyls (PBB, and polybrominated biphenyl ethers (PBDE. RoHS compliance requires that any residual concentration of these substances is below the Directive’s maximum concentration values (MCV): cadmium 100ppm by weight and all others 1000ppm by weight.
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