The large number of analog received signals to be processed in massive MIMO systems renders conventional high-precision analog-to-digital conversion (ADC) not feasible in terms of cost- and power-efficiency. In this paper we present a novel ADC architecture inspired by the principles of integer-forcing source coding, which jointly reconstructs the received signals in the digital domain. This scheme effectively exploits the correlation among the received signals in order to increase the achievable uplink transmission rates with respect to conventional ADC units in the low-resolution regime.