A 60 dB gain range programmable gain current amplifier for ultrasound sensing

被引：0
|
作者：
Wang, Siqi [1 ]
Lu, Zhenghao [2 ]
Tang, Zhong [3 ]
Yu, Xiaopeng [1 ]
机构：
[1] Zhejiang Univ, Inst VLSI Design, 38 Zheda Rd, Hangzhou 310027, Zhejiang, Peoples R China
[2] Soochow Univ, Sch Elect & Informat, 1 Shizi St, Suzhou 215123, Jiangsu, Peoples R China
[3] Vango Technol, 368 Liuhe Rd, Ste A4070, North Bldg, Hitech Pk, Hangzhou 310000, Zhejiang, Peoples R China
来源：
MICROELECTRONICS JOURNAL | 2024年 / 149卷
关键词：
Ultrasound; Analog front-end; Sensor interface; Programmable gain amplifier; TRANSIMPEDANCE AMPLIFIER;
D O I：
10.1016/j.mejo.2024.106240
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This article presents a programmable gain current amplifier (CA) for ultrasound sensing applications. The design proposed consists of a current divider and a close -loop current amplifier. The CA utilizes switches to adjust the resistance of the shunt resistors and feedback resistors to achieve variable gain, thus realizing the time gain compensation (TGC) function. The proposed CA implemented in 180-nm BCD technology occupies an active area of 0.059 mm 2 . Measurement results show that the CA achieves a maximum gain of 36.6 dB and a gain range of 60 dB. The average input -referred noise spectral density is 0.32 pA/ root Hz at maximum gain condition while consuming a power of 1.07 mW.
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页数：6
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