Table I.

Benchmarking of the Reduced-Wire Ultrasound ASIC Systems

Parameter	This work	[12]	[13]	[25]	[32]	[33]
Single chip integrated Tx-Rx system	Yes	No	No	No	No	No
Shared Tx-Rx array aperture with pitch match	Yes	No	N/A	No	No	No
Rx wire reduction	TDM	ADC + S/H analog	ADC + FIFO	S/H analog	Analog filter	S/H + Digital
Tx Wire reduction	Yes	No	No	No	No	No
Rx raw data accessibility	Yes	No	Yes	No	No	No
Center frequency (MHz)	7	5	5	5	40	3
Tx delay min (ns)/max(μs)	5/10.235	-	-	-	-	-
Die size (mm2)	2.6×11	2.5×4.8	2.93×3.2	6.1×6.1	1.2×0.3	4.5×4.3
Power/ Rx channel (mW)	6.26	0.91	17.5	0.27	4.62	17.81
Active area/ channel (mm2)	0.27	0.026	0.088	0.026	0.045	0.303
Power/ Rx active area (mW/ mm2)	23.18	35	198.96	10.38	102.66	58.77
# of channels	64Tx/64Rx	144Rx	16Rx	1024RX	8Rx	64Rx
# of wires / Rx channels	8/64	4/144	1/16	96/1024	1/8	1/64
# of wires/ Tx channels	0.0625 (4/64)	1	1	1	1	1
Tx amplitude	60V	-	-	-	-	-
Transducer	ID PZT/CMUT	2DPZT	2DCMUT	2DPZT	Annular CMUT	2D CMUT
Process	0.18 μm HV	0.18 μm	28 nm	0.18 μm	0.35 μm	0.13 μm