Broadband Digital Attenuators

The HDA040-069 Digital Attenuator covers the range from DC to 40 GHz in 6-bit operation. Attenuation bit values are 0.5 dB (LSB), 1, 2, 4, 8 and 16 dB for total attenuation of 31.5 dB above the attenuator insertion loss. Low bit errors and RMS phase errors are characteristics of this attenuator. The attenuator is useful for communication systems, radars and in test equipment.

Attenuator Bias Voltage = +5 volts.

Parameter Test Conditions Units Typical
Insertion Loss (at minimum attenuation) DC dB 4.0
1 GHz 5.1
3 GHz 6.0
10 GHz 7.3
20 GHz 8.4
30 GHz 9.2
40 GHz 11.5
Return Loss DC-40 GHz dB 10.0
Atttenuation Bits @ 20 GHz LSB: 0.5 dB dB 0.4
Bit 2: 1 dB 0.9
Bit 3: 2 dB 1.8
Bit 4: 4 dB 3.8
Bit 5: 8 dB 8.0
Bit 6: 16 dB 17.4
Input P1dB DC-40 GHz dBm 23
Input IP3 DC-40 GHz dBm 37
Switching Time DC-40 GHz nS 45
Control Logic DC-40 GHz V 0/+5
Control Current Each control bit @ +5V mA 6
Supply Current DC-40 GHz mA 17 (45 max)
Absolute Maximum Input DC-40 GHz dBm 35

Operating Temperature Range (absolute maximum): -40°C to +85°C
Storage Temperature Range (absolute maximum): -65°C to +150°C

Downloads (click to download)

Broadband Digital Attenuator, HDA040-069 Datasheet
HXI Company Overview