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CMOS TEMPERATURE SENSOR WITH PROGRAMMABLE TEMPERATURE RANGE FOR BIOMEDICAL APPLICATIONS Setiabudi, Agung; Tamura, Hiroki; Tanno, Koichi
International Journal of Electrical and Computer Engineering (IJECE) Vol 8, No 2: April 2018
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1626.699 KB) | DOI: 10.11591/ijece.v8i2.pp946-953

Abstract

A CMOS temperature sensor circuit with programmable temperature range is proposed for biomedical applications. The proposed circuit consists of temperature sensor core circuit and programmable temperature range digital interface circuit. Both circuits are able to be operated at 1.0 V. The proposed temperature sensor circuit is operated in weak inversion region of MOSFETs. The proposed digital interface circuit converts current into time using Current-to-Time Converter (ITC) and converts time to digital data using counter. Temperature range can be programmed by adjusting pulse width of the trigger and clock frequency of counter. The proposed circuit was simulated using HSPICE with 1P, 5M, 3-wells, 0.18-?m CMOS process (BSIM3v3.2, LEVEL53). From the simulation of proposed circuit, temperature range is programmed to be 0 °C to 100 °C, it is obtained that resolution of the proposed circuit is 0.392 °C with -0.89/+0.29 °C inaccuracy and the total power consumption is 22.3 ?W in 25 °C. 
HIGH SPEED AND LOW PEDESTAL ERROR BOOTSTRAPPED CMOS SAMPLE AND HOLD CIRCUIT Setiabudi, Agung; Tamura, Hiroki; Tanno, Koichi
International Journal of Electrical and Computer Engineering (IJECE) Vol 8, No 6: December 2018 (Part I)
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (572.475 KB) | DOI: 10.11591/ijece.v8i6.pp4148-4156

Abstract

A new high speed, low pedestal error bootstrapped CMOS sample and hold (S/H) circuit is proposed for high speed analog-to-digital converter (ADC). The proposed circuit is made up of CMOS transmission gate (TG) switch and two new bootstrap circuits for each transistor in TG switch. Both TG switch and bootstrap circuits are used to decrease channel charge injection and on-resistance input signal dependency. In result, distortion can be reduced. The decrease of channel charge injection input signal dependency also makes the minimizing of pedestal error by adjusting the width of NMOS and PMOS of TG switch possible. The performance of the proposed circuit was evaluated using HSPICE 0.18-m CMOS process. For 50 MHz sinusoidal 1 V peak-to-peak differential input signal with a 1 GHz sampling clock, the proposed circuit achieves 2.75 mV maximum pedestal error, 0.542 mW power consumption, 90.87 dB SNR, 73.50 SINAD which is equal to 11.92 bits ENOB, -73.58 dB THD, and 73.95 dB SFDR.
Centralized Smart Home Framework Monitoring for Power Savings Setyawan, Gembong Edhi; Setiabudi, Agung; Muttaqin, Adharul; Ichsan, Mochammad Hannats Hanafi
Journal of Information Technology and Computer Science Vol 1, No 2 (2016)
Publisher : Faculty of Computer Science (FILKOM) Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (681.155 KB) | DOI: 10.25126/jitecs.2016128

Abstract

Abstract. Electrical energy has become a staple for humans. Almost all human activities always require electrical energy. To maintain the availability of electricity at any time, then it takes the process of global electricity savings. The electricity savings can be done in two ways, the first is the development of technology to make electric appliances that require low power for operation and the second is to improve human behavior in the use of electrical appliances (turning off electrical appliances when not in use). This research aims to create a centralized smart home that can help people to monitor the condition of electrical appliances in the house and turn off automatically when not being used. Besides this system could also be used in manual mode and be controlled remotely using a smartphone through the Internet. The system is made centrally so not only for the home but can be used for many homes. After application was implemented it can monitored which device is turned on or turned off.Keywords: Smart Home, Monitoring and Power Savings
An Analysis of Validity and Reliability of a Teacher-Made Test Setiabudi, Agung; Mulyadi, Mulyadi; Puspita, Hilda
Journal of English Education and Teaching Vol 3, No 4 (2019)
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (715.062 KB) | DOI: 10.33369/jeet.3.4.522-532

Abstract

The aim of this research was to find out the validity and reliability of a teacher-made test in SMAN 6 Bengkulu. This research was a descriptive quantitative research. The subject of this research was an English teacher-made test for eleventh grade students of SMAN 6 Bengkulu. There were 40 items of the test consist of 35 multiple choice items and 5 essay items. There were two research instruments used in this research, observation checklist and documentation. Based on the data analysis, it was found that the  percentage of the validity score was 60% or 0.60. It means that the test was valid but in the intermediate category. The r-obtained for reliability test was 0.62 and it was considered to be reliable but was in the intermediate level of reliability.  From the research finding, it can be concluded that the test was valid and reliable but both were in the intermediate category. It means that the test still need some revision and improvement in order to be a good, valid, and reliable test. Key Words : Validity, Reliability, Teacher-made test  
EFEKTIFITAS LKPD DENGAN PENDEKATAN SAINTIFIK UNTUK MENINGKATKAN PEMAHAMAN KONSEP MATEMATIKA SISWA KELAS VIII SMP NEGERI 3 KOTA BENGKULU Setiabudi, Agung; Susanta, Agus; Maulidiya, Della
JP2MS Vol 3, No 2 (2019)
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/jp2ms.3.2.228-241

Abstract

AbstrakPenelitian ini bertujuan menghasilkan Lembar Kerja Peserta Didik dengan Pendekatan Saintifik pada Materi Bangun Ruang Sisi Datar untuk Meningkatkan Pemahaman Konep Matematika Siswa Kelas VIII di SMPN 3 Kota Bengkulu yang memenuhi kategori efektif. Penelitian ini adalah penelitian pengembangan (Research and Development) dengan memodifikasi model 4D Thiagarajan menjadi 3 tahapan yaitu tahap pendefinisian (define), tahap perancangan (design), dan tahap pengembangan (develop) yang terdiri dari validitas, kepraktisan, dan efektifitas. Efektifitas LKPD diuji pada tiga puluh dua peserta didik di kelas VIII 1 SMP Negeri 3 Kota Bengkulu semester genap tahun ajaran 2017/2018. Instrumen penelitian terdiri dari lembar efektifitas. Hasil penelitian menunjukkan bahwa Lembar Kerja Peserta Didik Dengan Pendekatan Saintifik Pada Materi Bangun Ruang Sisi Datar Untuk Meningkatkan Pemahaman Konsep Matematika Siswa Kelas VIII Di SMPN 3 Kota Bengkulu termasuk dalam kategori efektif berdasarkan : 1) respon peserta didik dengan skor rata-rata 63,88 dalam kategori sangat baik; 2) aktivitas peserta didik dengan skor rata-rata 66,5 dalam kategori sangat baik dan; 3) hasil belajar peserta didik mencapai ketuntasan klasikal 81,25%. Kata Kunci : Efektifitas, Lembar Kerja Peserta Didik, Pendekatan Saintifik, Pemahaman Konsep matematika AbstractThis research aims to develop the learners' worksheet with the Scientific Approach in Polyhedron Material Facility to Increase the Understanding of Mathematical Concept of the 8th-grade students at the SMPN 3 Kota Bengkulu that meets effective category. Type of research used development research (Reasearch and Development) by modifying the 4D Thiagarajan model into 3 phase, which are define phase, design phase, and development phase consisting of validity, practicality, and effectiveness. Validation has been done by 3 validators. The effectiveness of LKPD was tested on thirty-two students in the 8th-grade 1 SMP Negeri 3 Kota Bengkulu in the even semester of the 2017/2018 academic year. The research instruments consist of effectiveness. The results showed that the Students' worksheet with Scientific Approach in Polyhedron Material to improve the Understanding of Student in Mathematical Concept of the 8th grade in SMPN 3 Kota Bengkulu includes in the category as follows effective on the basis of: 1) the response of learners with an average score of 63.88 in very good category; 2) the activity of learners with an average score of 66.5 in a very good category and; 3) learning outcomes of learners achieve classical completeness 81,25%. Keywords : Effectiveness, Students' Worksheet, Scientific Approach, Understanding Mathematical Concept.