Temperature Compensated Amplifiers
0.5 GHz to 18 GHz (-54°C to +85°C)
Special Purpose Amplifiers




    • Frequency Coverage from .05 GHz to 18 GHz
    • MIC Thin-Film Design for High Reliability
    • Optimum Compensation Techniques for Stable Gain

Temperature Compensated Amplifiers 0.5 GHz to 18 GHz (-54°C to +85°C) Special Purpose Amplifiers
For applications where normal amplifier gain variations as a function of environmental temperature range exceed the allowable system limits. CTT offers amplifier designs whose gain variations have been reduced to one half that of uncompensated designs.

CTT Utilizes two techniques for compensating for gain variations:
• Integrating a PIN diode attenuator or FET (field effect transistor)
• Bias current compensation.

In the first approach, the control current of a PIN diode attenuator is automatically decreased by means of a thermistor so that at high temperatures there is less attenuation. This compensates for the decreased gain due to an increase in ambient temperature. The attenuator is placed between the gain stages of the amplifiers so that noise figure and output power performance is minimally degraded.

In the second approach, the FET itself is compensated. In regions of low bias current, the FET gain is proportional to the current. The FET bias current is automatically increased by means of a thermistor at high temperatures to increase the gain, in order to compensate for a decrease in gain as a result of the increase in the ambient temperature.

Frequency
Response
Gain Gain
Flatness
Noise
Figure
P1dB
VSWR Volts DC Current Case
MODEL NUMBER (GHz) (dB) (±dB) (dB) (±dBm) In/Out (DC) (mA)  
  Min Min~Max Max Max Min Max Typ Typ  

ATM/020-4033 0.5-2.0 33~37 1.50 4.0 20 2.0:1 12 320 HC4
ATM/020-4036 0.5-2.0 36~40 1.25 4.0 15 2.0:1 12 200 HC4

ATM/060-4031 2.0-6.0 31~35 1.50 4.0 20 2.0:1 12 350 HC4
ATM/060-4033 2.0-6.0 33~37 1.50 4.0 15 2.0:1 12 240 HC4

ATM/080-5020 2.0-8.0 20~24 1.50 5.0 12 2.0:1 12 250 HC2
ATM/080-5033 2.0-8.0 33~37 1.50 5.0 20 2.0:1 12 350 HC6
ATM/080-5036 2.0-8.0 36~40 1.50 5.0 15 2.0:1 12 300 HC6
ATM/080-7520 2.0-8.0 20~24 1.50 7.5 20 2.0:1 12 280 HC2

ATX/0218-8522 2.0-18.0 22~28 2.50 8.5 10 2.2:1 12 450 HX4
ATX/0218-8544 2.0-18.0 36~44 2.75 8.5 10 2.2:1 12 600 HX6

ATM/180-5020 6.0-18.0 20~24 1.50 5.0 12 2.0:1 12 250 HX2
ATM/180-6026 6.0-18.0 26~30 1.75 6.0 15 2.0:1 12 300 HX4
ATM/180-6030 6.0-18.0 30~35 2.00 6.0 20 2.0:1 12 450 HX6
ATM/180-7518 6.0-18.0 18~22 1.50 7.5 20 2.0:1 12 320 HX4

ATO/180-6026 8.0-18.0 26~30 1.50 6.0 15 2.0:1 12 300 HX4
ATO/180-6030 8.0-18.0 30~35 2.00 6.0 20 2.0:1 12 450 HX6

Comments:
1. Maximum input power level will be +17 dBm CW. +20 dBm optional.
2. 0.32 inches thick flat package is optional.
3. SMA, female connectors are standard.
4. All units contain built-in voltage regulator and reverse voltage protection diode.
5. Consult the factory for any special gain, noise figure, power, voltage, etc.