AD converter device, semiconductor integrated circuit device, and designing method of AD converter device

A semiconductor integrated circuit device, comprising:

• an AD converter device configured to perform analog-to-digital conversion in a time-interleaved manner;
• and
• a signal processing circuit configured to receive a digital signal from the AD converter device to perform a processing operation, wherein
• the AD converter device includes:
• a plurality of AD converter circuit units including an AD converter circuit and an output circuit, respectively, the AD converter circuit being configured to perform analog-to-digital conversion, and the output circuit being configured to output the result of AD conversion by the AD converter circuit as an output signal;
• and
• a multiplexer circuit configured to generate a digital signal from output signals of the plurality of AD converter circuit units, the multiplexer circuit being a circuit in which a plurality of logic circuits are connected in a tournament configuration using a plurality of intermediate connection wirings,
• in a circuit layout of the AD converter device,
• the plurality of logic circuits and the plurality of intermediate connection wirings are placed to be distributed in the plurality of AD converter circuit units,
• in each of the plurality of AD converter circuit units, the output circuit and a first element circuit part including at least one of the plurality of logic circuits are placed along a first outer periphery and the plurality of intermediate connection wirings are placed to cross in a first direction, and
• the plurality of AD converter circuit units are placed along the first direction with two adjacent ones of the plurality of AD converter circuit units set as a pair and with the output circuits and the first element circuit parts included in the plurality of AD converter circuit units facing each other for each pair.

A designing method of an AD converter device, the AD converter device including:

• a plurality of AD converter circuit units including an AD converter circuit and an output circuit, respectively, the AD converter circuit being configured to perform analog-to-digital conversion in a time-interleaved manner, and the output circuit being configured to output the result of AD conversion by the AD converter circuit as an output signal;
• and a multiplexer circuit configured to generate a digital signal from output signals of the plurality of AD converter circuit units, the multiplexer circuit being a circuit in which a plurality of logic circuits are connected in a tournament configuration by a plurality of intermediate connection wirings, the designing method comprising:
• placing, in a circuit layout of the AD converter device, the plurality of AD converter circuit units along a first direction with two adjacent ones of the plurality of AD converter circuit units set as a pair and with the output circuits and first element circuit parts included in the plurality of AD converter circuit units facing each other for each pair, wherein in each of the plurality of AD converter circuit units, the output circuit and the first element circuit part including at least one of the logic circuits are placed along a first outer periphery and the plurality of intermediate connection wirings are placed to cross in the first direction;
• and
• placing, in a circuit layout of the AD converter device, the multiplexer circuit by placing to be distributed the plurality of logic circuits and the plurality of intermediate connection wirings in the plurality of AD converter circuit units and connecting the plurality of the logic circuits in a tournament configuration using the plurality of intermediate connection wirings.