  A single width NIM module that includes eight channels TAC (time-to-amplitude
converter) and QAC (charge-to-amplitude converter) is introduced in the paper,
which is designed for the large neutron wall detector to measure charge
(energy) and time interval simultaneously [1]. The module mainly adopts a high
precision gated integral circuit to realize TAC and QAC. The input range of TAC
is from 30 ns to 1 us, and the input range of QAC is from 40 pC to 600 pC. The
linearity error of TAC is lower than 1.28 %, and the time resolution of TAC is
less than 0.871 %. The linearity error of QAC is lower than 0.81 %, and the
resolution of QAC is better than 0.936 %.
