Insensitive current-mode universal filter with minimum components using dual-output current conveyors

1999 ◽  
Vol 35 (7) ◽  
pp. 524 ◽  
Author(s):  
E. Olcay Güneş ◽  
A. Toker ◽  
S. Özoğuz
Keyword(s):  
Current Mode ◽  
Current Conveyors ◽  
Universal Filter ◽  
Output Current

scholarly journals Programmable Input Mode Instrumentation Amplifier Using Multiple Output Current Conveyors

2017 ◽  
Vol 24 (1) ◽  
pp. 79-89
Author(s):  
Bogdan Pankiewicz
Keyword(s):  
Integrated Circuit ◽  
Current Mode ◽  
Cmos Technology ◽  
Instrumentation Amplifier ◽  
Current Conveyors ◽  
Output Current ◽  
Input Mode ◽  
Field Programmable ◽  
Transmission Gates ◽  
Analogue To Digital

Abstract In this paper a programmable input mode instrumentation amplifier (IA) utilising second generation, multiple output current conveyors and transmission gates is presented. Its main advantage is the ability to choose a voltage or current mode of inputs by setting the voltage of two configuration nodes. The presented IA is prepared as an integrated circuit block to be used alone or as a sub-block in a microcontroller or in a field programmable gate array (FPGA), which shall condition analogue signals to be next converted by an analogue-to-digital converter (ADC). IA is designed in AMS 0.35 µm CMOS technology and the power supply is 3.3 V; the power consumption is approximately 9.1 mW. A linear input range in the voltage mode reaches ± 1.68 V or ± 250 µA in current mode. A passband of the IA is above 11 MHz. The amplifier works in class A, so its current supply is almost constant and does not cause noise disturbing nearby working precision analogue circuits.

MULTI-OUTPUT CURRENT FOLLOWER BASED CURRENT-MODE UNIVERSAL FILTER EMPLOYING ONLY GROUNDED CAPACITORS

2014 ◽  
Vol 23 (09) ◽  
pp. 1450123 ◽  
Author(s):  
HALIL ALPASLAN ◽  
ERKAN YUCE
Keyword(s):  
Output Voltage ◽  
Current Mode ◽  
Passive Component ◽  
Theoretical Knowledge ◽  
Universal Filter ◽  
Output Current ◽  
Matching Conditions ◽  
Current Follower ◽  
Component Matching ◽  
High Output

In this paper, a new two-input three-output second-order universal filter is proposed. Two multi-output voltage controlled current followers (MO-VCCFs) and two capacitors are used in the proposed filter. The proposed filter does not have external passive resistors. It has high output impedances yielding easy cascadability. It has the property of electronic tunability. It does not need any critical passive component matching conditions. Also, it is composed of only grounded capacitors; accordingly, it is suitable for integration. Theoretical knowledge is supported via SPICE simulations.

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