Model: PSAT-2500-11B-CD-1 
PMI Model PSAT-2500-11B-CD-1 is a 2.5GHz, 11 Bit Digitally Controlled Attenuator / Analog Phase Shifter assembly having the capability for phase shifting from 0 to 360° with an attenuation range of 60dB minimum. This model has insertion loss of 10dB maximum and a VSWR of 1.5:1 maximum into 50 ohms. The phase shift speed is 50nsec maximum while the attenuation speed is 1usec maximum. This model is designed to offer high levels of phase shift accuracy and attenuation accuracy over time and over an operating temperature range of 0°C to +70°C. This device is offered in a small housing that measures 3.0" x 2.5" x 0.85".
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Specifications:
| Center Frequency | 2500MHz |
| Bandwidth- | |
| 3dB | 220MHz |
| 0.5dB | 55MHz |
| 0.1dB | 10MHz |
| Phase Shifter | 360 Degrees Minimum (-4V to -9V) |
| Attenuation Range | 60dB Minimum |
| Input Level | -100 to 0dBm |
| RF Impedance | 50 Ohms |
| VSWR (In / Out) | 1.5:1 Maximum |
| Insertion Loss | 10dB Maximum |
| Spurious | 60dBc Harmonic & Non-Harmonic |
| Phase Control Speed | 50nsec Maximum (Measured from 50% TTL to within 10° of final value) |
| Phase Control | Monotonic, Analog, -3 to -15 Volts |
| Repeatability | Deviation from vendor vs. supply voltage characteristics shall be less than 2° |
| Max / Min Slope Ratio | 4 |
| Minimum Voltage Change for 360° | 5 Volts |
| Attenuation Control Speed | 1usec Maximum (50% TTL to within 0.1dB final attenuation over the 0 to 45dB range) |
| Attenuation Control | Monotonic, 11-Bit Parallel TTL |
| Attenuation Step Size | 0.0625dB (60dB = 960 Digital) |
| Attenuation Accuracy at Center Frequency | ±0.5dB to 30dB, ±1.0dB from 30dB to 50dB, |
| Relative Attenuation Accuracy up to 1dB | Accurate to within 0.1dB |
| PM / AM | 0.8dB peak-peak Maximum over 360° |
| AM / PM | Peak-Peak phase shift at constant phase setting at center frequency (2500MHz) shall be less than 4.0°, attenuation 0 to 40dB |
| Phase vs. Frequency Variation over 0.88% Bandwidth (22MHz) | ±1° |
| Phase vs. Frequency Variation over 2.2% Bandwidth (55MHz) | ±3° |
| Phase vs. Frequency Variation over 8.8% Bandwidth (220MHz) | ±7° |
| Deviation from Linear over 2.2% Bandwidth (55MHz) | ±1° |
| Deviation from Linear over 8.8% Bandwidth (55MHz) | ±5° |
| Absolute Attenuation Temperature Stability | Variation at any setting < 1.25dB with respect to the value at 25°C |
| Relative Attenuation Temperature Stability | Variation between any two devices (Over all relative attenuation and phase settings) shall be less than 1.4dB with respect to the value at 25°C and less than 0.5dB over any 20°C change |
| Absolute Phase Temperature Stability | Variation at any setting < 8° with respect to the value at 25°C |
| Relative Phase Temperature Stability | Variation between any two devices (Over all relative attenuation and phase settings) shall be less than 4° with respect to the value at 25°C and less than 2° over any 20°C change |
| Logic Bits | 11 (See Pin Function Table) |
| LSB | 0.03125dB |
| DC Power | +15V @ 150mA Maximum -15V @ 60mA Maximum |
| Control Connector | 15 Pin D-Sub Male (mating Connector Supplied) |
| RF Connectors | SMA Female (Input) and SMA Male (Output) |
| Size | 3.0 x 2.5 x 0.85 |
| Finish | Painted Gray |
Environmental Ratings:
| Temperature: | -0ºC to +70 ºC Operating |
| -65 ºC to +125 ºC Non-Operating | |
| Humidity: | MIL-STD-202F, Method 103B Cond. B |
| Shock: | MIL-STD-202F, Method 213B Cond. B |
| Vibration: | MIL-STD-202F, Method 204D Cond. B |
| Altitude: | MIL-STD-202F, Method 105C Cond. B |
| Temperature Cycle: | MIL-STD-202F, Method 107D Cond. A |