The MAX2055 is a high-performance, digitally controlled, variable-gain, differential analog-to-digital converter (ADC) driver/amplifier (DVGA) from Texas Instruments. It is 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.
The MAX2055 is a digitally controlled, variable‑gain, differential ADC driver/amplifier designed for use from 30 MHz to 300 MHz in base‑station receivers and other high‑performance ADC driver applications. It integrates a digitally controlled attenuator and a single‑ended‑to‑differential output amplifier, providing up to 23 dB of attenuation with 0.2 dB accuracy.
The device is supplied in a 20‑pin TSSOP‑EP package that operates over a temperature range of –40 °C to +85 °C. Typical specifications include a gain range of –3 dB to +20 dB, 40 dBm output IP3, 5.8 dB noise figure at maximum gain, and 1 dB gain‑control resolution.
| Frequency Range | 30 MHz to 300 MHz |
|---|---|
| Gain Range | -3 dB to +20 dB |
| Attenuation Range | 23 dB |
| Output IP3 | 40 dBm |
| Noise Figure | 5.8 dB at maximum gain |
| Supply Voltage | 4.75 V to 5.25 V |
| Operating Temperature Range | -40 °C to +85 °C |
| Package | 20‑pin TSSOP‑EP |
The MAX2055 operates from 30 MHz to 300 MHz.
It provides up to 23 dB of attenuation with ±0.2 dB accuracy.
The device requires a supply voltage between 4.75 V and 5.25 V.