Features: * Integrated monolithic GaAs amplifier and stepattenuator.* Compatible with all digital and analog modulation types.* Frequency range: 5 - 100 MHz.* Gain: 0 - 30 dB, variable in 2 dB steps.* 5 Volt operation.* Low noise figure.* Low distortion.* Amplifier shutdown capability.* Low cost.*...
ARA05050S12-1: Features: * Integrated monolithic GaAs amplifier and stepattenuator.* Compatible with all digital and analog modulation types.* Frequency range: 5 - 100 MHz.* Gain: 0 - 30 dB, variable in 2 dB steps...
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ELECTRICAL CHARACTERISTICS (TYPICAL) (VDD=5 VDC, TC=25 °C) | |||||||
Plarameter | Min | Typ | Max | Unit | Comments | ||
1 Gain |
30 | 32 | 33 | dB | At 0dB attenuation setting | ||
1 Gain Flatness |
- | 0.75 | 1.5 | dB | 5 to 100 MHz | ||
1 Attenuation Steps 2 dB 4 dB 8 dB 16 dB |
1.6 3.8 8.0 16.0 |
1.85 4.0 8.3 16.6 |
2.2 4.2 8.5 17.0 |
dB | 3 5 to 42 MHz |
||
nd 2 2 Harmonic Distortion Level 5 MHz 25 MHz |
- - |
-60 -63 |
-55 -55 |
dBc | |||
rd 2 3 Harmonic Distortion Level 5 MHz 25 MHz |
- - |
-63 -63 |
-60 -60 |
dBc | |||
rd 3 Order Output Intercept Point |
78 | - | - | dBmV | |||
1dB Gain Compression Point | - | 70 | - | dBmV | |||
Noise Figure | - | 1.7 | 2.5 | dB | |||
Output Noise Power Active/No Signal/Min Attn. Setting Active/No Signal/Max Attn. Setting |
- - |
- - |
-24.6 -41.6 |
dBmV | Any 3200 KHz bandwidth from 5 to 42 MHz |
||
On/Off Isolation Shut Off Stage 2 Shut Off Stages 1 & 2 |
- |
30 53.5 |
- - |
dB | Difference in output signal level between active and standby |
||
1 Input Impedance |
- | 75 | - | ohm | |||
1 Input Return Loss |
- | -20 | -15 | dB | |||
1 Output Impedance |
- | 75 | - | ohm | |||
1 Ouput Return Loss |
- | -20 | -15 | dB | |||
V , V DD1 DD2 |
- | 5 | 7 | v | |||
V Digital DD |
- | 5 | - | v | |||
V Shutdown | -2 | - | -1.5 | v | |||
I DD1 |
- | 75 | 95 | mA | |||
I DD2 |
- | 100 | 130 | mA | |||
I Digital DD |
- | 8 | - | mA | |||
Power Consumption | - | 1 | 1.2 | w | |||
Attenuator Control Impedance | - | 5 K | - | ohm | |||
4 Attenuator Control Logic VIL VIH |
0 2.8 |
- - |
0.5 6.5 |
Volts |
ABSOLUTE MAXIMUM RATINGS | ||||
Parameter | Absolute Maximum | Unit | ||
V (Pins 4,12, 18) DD |
9 | VDC | ||
V (Pins 10, 24) RFIN |
0 to -3 | VDC | ||
ATT (Pin 3) ATT (Pin 26) IN OUT |
5 | VDC | ||
V (Pins 11, 25) ISET |
2 | VDC | ||
RF Input Voltage (Pins 10, 24)* | +60 | dBmV | ||
Storage Temperature | -55 to +200 | °C | ||
Soldering Temperature | 260 | °C | ||
Soldering Time | 5 | Sec | ||
Operating Case Temperature | -40 to +85 | °C |
The ARA05050 is a GaAs IC designed to perform thereverse path amplification and output level control functions in a CATV Set-Top Box or Cable Modem. ARA05050S12-1 incorporates a digitally controlled precision step attenuator that is preceded by an ultra low noise amplifier stage, and followed by an ultra-linear output driver amplifier. ARA05050S12-1 is capable of meeting the MCNS/DOCSIS harmonic distortion specifications while only requiring a single polarity +5V supply. This part is a single ended design that ARA05050S12-1 does not require an output balun to achieve -55 dBc 2nd harmonic performance at +58 dBmV output levels. Both the input and output are matched to 75 ohms. The precision attenuator provides up to 30 dB of attenuation in 2 dB increments. The ARA05050 is supplied in a 28-pin SSOP package featuring a thermal heat slug on the bottom of the package. Soldering this heat slug to the ground plane of the PC board ensures the lowest possible thermal resistance for the device resulting in a long MTF.