A new discrete circuit for readout of resistive sensor arrays

Saxena, Raghvendra Sahai; Bhan, R. K.; Aggrawal, Anita

doi:10.1016/j.sna.2008.10.013

Cited by 54 publications

(64 citation statements)

References 19 publications

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“…Efforts are on to demonstrate the basic imaging in the laboratory conditions using 16 x 16 and 32 x 32 (under development) arrays with the help of external hardware in absence of a proper ROIC. The concept of the hardware used is discussed 35 .…”

Section: Characterisation Techniquesmentioning

confidence: 99%

Uncooled Infrared Microbolometer Arrays and their Characterisation Techniques

Bhan¹,

Saxena²,

Jalwania³

et al. 2009

DSJ

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Recently, a lot of attention has been paid to infrared imaging using uncooled microbolometer detectors, primarily because of their low cost, and wide military and civilian applications. This paper reviews the basic principles of these detectors and some of the important works done internationally in this field. This paper presents some of the research work on titanium microbolometer carried out at Solid State Physics Laboratory, Delhi.

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Section: Characterisation Techniquesmentioning

confidence: 99%

Uncooled Infrared Microbolometer Arrays and their Characterisation Techniques

Bhan¹,

Saxena²,

Jalwania³

et al. 2009

DSJ

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“…The results of this measurement are tabulated in Table 3. According to the theoretical analysis, discussed in our previous work [Saxena et al 2008b[Saxena et al , 2009[Saxena et al , 2011, the output signal of the four zones (zone are described in Figure 1) should be in the ratio of (N þ M þ 1):N:M:1. Therefore, for our test case where N ¼ M ¼ 4, we should get the signals in the ratio of 9:4:4:1.…”

Section: Experimental Verificationmentioning

confidence: 97%

“…(Prutchi and Arcan 1993;Tanak et al 1996;D'Alessio, 1999;Cariaa, Cadeddua, Laib, Sesselegoa, and Quaratia 2002;Lu, Marschner, Eisenmann, and Sauer 2002;Torquemada et al 2003;Kim, Han, Nguyen, Shin, and Moon 2004;Depari et al 2007;Lichtenwalner, Hydrick, and Kingon 2007;Saxena, Bhan, and Aggarwal 2008a;Saxena, Bhan, Jalwania, Rana, and Lomash 2008b;Saxena, Bhan, and Aggarwal 2009) Larger arrays are usually required for resolution enhancement but the large size increases the required number of interconnections, making electrical access difficult. Sharing of rows and columns in these arrays is an attractive technique for reducing the number of interconnections from N .…”

Section: Introductionmentioning

confidence: 99%

Crosstalk suppression in networked resistive sensor arrays using virtual ground technique

Saxena

Semwal

Rana

et al. 2013

International Journal of Electronics

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In 2D resistive sensor arrays, the interconnections are reduced considerably by sharing rows and columns among various sensor elements in such a way that one end of each sensor is connected to a row node and other end connected to a column node. This scheme results in total N þ M interconnections for N Â M array of sensors. Thus, it simplifies the interconnect complexity but suffers from the crosstalk problem among its elements. We experimentally demonstrate that this problem can be overcome by putting all the row nodes at virtually equal potential using virtual ground of high gain operational amplifiers in negative feedback. Although it requires large number of opamps, it solves the crosstalk problem to a large extent. Additionally, we get the response of all the sensors lying in a column simultaneously, resulting in a faster scanning capability. By performing lock-in-amplifier based measurements on a light dependent resistor at a randomly selected location in a 4 Â 4 array of otherwise fixed valued resistors, we have shown that the technique can provide 86 dB crosstalk suppression even with a simple opamp. Finally, we demonstrate the circuit implementation of this technique for a 16 Â 16 imaging array of light dependent resistors.

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“…One of them is reported in Figure 24 where, by means of a suitable control switching circuit, the internal connections related to the matrix rows and columns have been reduced and simplified. Moreover, Figure 24 shows also the basic signal conditioning circuit, considered to the readout of the array elements, based on the simple inverting voltage amplifier [46,47]. However, in some solutions, it is important to consider also a further significant matter resulting in the undesired information, spreading in the array, due to the interconnect overloading and the crosstalk among the sensor elements.…”

Section: Sensor Arrays Managementmentioning

confidence: 99%

“…However, in some solutions, it is important to consider also a further significant matter resulting in the undesired information, spreading in the array, due to the interconnect overloading and the crosstalk among the sensor elements. This effect has to be necessarily avoided or reduced in integrated microsystems [44][45][46][47].…”

Section: Sensor Arrays Managementmentioning

confidence: 99%

Resistive Sensor Interfacing

Marcellis

Ferri

Mantenuto

2013

Giant Magnetoresistance (GMR) Sensors

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Abstract. This chapter has the aim to give a complete overview on the first analog front-ends, describing some circuit and system solutions for the design of electronic interfaces suitable for resistive sensors showing different variation ranges: small, as in dedicated-application GMR sensors; wide, especially referred to GMR sensing devices whose baseline is unknown. After a description of the main interface parameters, the authors present several solutions, most of which do not require any calibration. These solutions are different according to the entity of resistive sensor variations, can utilize either AC or DC excitation voltages for the employed sensor and are developed in Voltage-Mode (VM, which considers the use of either the Operational Amplifier (OA) or the Operational Transconductance Amplifier (OTA) as main active block) as well as in Current-Mode (CM) approach (being in this case the Second Generation Current Conveyor (CCII) the active device). The described interfaces can be easily fabricated both as prototype boards, for a fast characterization, and as integrated circuits, also using modern microelectronics design techniques, in a standard CMOS technology with Low Voltage (LV) and Low Power (LP) characteristics, especially when designed for portable applications and instrumentation. Moreover, thanks to their reduced sizes in terms of chip area, the proposed solutions are suitable for being used for sensor arrays applications, where a number of sensors is employed, as in portable systems, to detect different environmental parameters.

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A new discrete circuit for readout of resistive sensor arrays

Cited by 54 publications

References 19 publications

Uncooled Infrared Microbolometer Arrays and their Characterisation Techniques

Uncooled Infrared Microbolometer Arrays and their Characterisation Techniques

Crosstalk suppression in networked resistive sensor arrays using virtual ground technique

Resistive Sensor Interfacing

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