The document is the datasheet of HMC288MS8, which mainly introduces the function characteristics and usage methods of the product. The product is a 3-bit digital attenuator with a 2 dB LSB step to 14 dB attenuation range. The single bit control voltage is 0 and +3 to +5V. It is used in cellular, PCS, ISM, MMDS and WLL applications.
The HMC288MS8 is a broadband 3-bit positive control GaAs IC digital attenuator housed in an 8-lead MSOP surface mount plastic package. It covers the frequency range of 0.7 to 3.7 GHz with an insertion loss typically less than 1.2 to 1.8 dB and a total attenuation of 14 dB using 2 dB LSB steps.
The device features three bit control voltage inputs toggled between 0V and +3V to +5V to select attenuation states, consuming less than 50 uA per bit. It requires a single Vdd bias of +3 to +5V applied through an external 5k Ohm resistor. The datasheet provides electrical specifications, truth tables, application circuit diagrams, absolute maximum ratings, and outline drawings.
| Frequency Range | 0.7 - 3.7 GHz |
|---|---|
| Attenuation Range | 14 dB |
| Package Type | MSOP-8 |
| Insertion Loss (0.7 - 3.7 GHz) | < 2.3 dB typical |
| Attenuation Accuracy (Typical) | +0.3 dB |
| Input Third Order Intercept Point (5V) | 51 dBm |
| Operating Temperature | -40 to +85 °C |
The device provides 2 dB LSB steps.
It uses three bit control voltage inputs (V1, V2, V3).
A single Vdd bias of +3 to +5V is required.