The MAX2055 is a high-performance, digitally controlled, variable-gain, differential analog-to-digital converter (ADC) driver/amplifier (DVGA) designed for use from 30MHz to 300MHz in base station receivers. The device integrates a digitally controlled attenuator and a high-linearity single-ended-to-differential output amplifier, which can either eliminate an external transformer, or can improve the even-order distortion performance of a transformer-coupled circuit, thus relaxing the requirements of the anti-alias filter preceding an ADC. Targeted for ADC driver applications to adjust gain either dynamically or as a one-time channel gain setting, the MAX2055 is ideal for applications requiring high performance. The attenuator provides 23dB of attenuation range with ±0.2dB accuracy. The MAX2055 is available in a thermally enhanced 20-pin TSSOP-EP package and operates over the -40°C to +85°C temperature range. Application areas include cellular base stations, PHS/PAS infrastructure receiver gain control, broadband systems, automatic test equipment, terrestrial links, and high-performance ADC drivers.
The MAX2055 is a high‑performance, digitally controlled, variable‑gain differential ADC driver/amplifier designed for use from 30 MHz to 300 MHz in base‑station receivers. It integrates a digitally controlled attenuator (23 dB range, ±0.2 dB accuracy) and a high‑linearity single‑ended‑to‑differential output amplifier.
The device is supplied in a 20‑pin TSSOP‑EP package, operates from –40 °C to +85 °C, and provides up to 40 dBm output IP3. Typical applications include cellular base stations, broadband systems, automatic test equipment, and other high‑performance ADC driver uses.
| Frequency Range | 30 MHz – 300 MHz |
|---|---|
| Gain Range | -3 dB to +20 dB |
| Attenuation Range | 23 dB |
| Attenuation Accuracy | ±0.2 dB |
| Output IP3 | 40 dBm |
| Noise Figure (max gain) | 5.8 dB |
| Supply Voltage (VCC) | 4.75 V – 5.25 V |
| Supply Current | 240 mA – 290 mA |
| Operating Temperature | -40 °C to +85 °C |
The MAX2055 provides a digitally controlled attenuation range of 23 dB.
The device operates with a supply voltage (VCC) between 4.75 V and 5.25 V.
Typical output third‑order intercept point is 40 dBm at all gain states.
The part is rated for –40 °C to +85 °C.