|
Provide Reference for Multiple ADCS - 24-Jan-02 EDN Design Ideas: The achievable accuracy for systems with multiple ADCs depends directly on the reference voltages applied to the ADCs. Medical-ultrasound-imaging systems, for example, commonly include a large number of ADCs in the system's beam-former electronics, with the ADCs usually organized in groups of 16, 24, 32, and so on Design by Ron Gatzke and Tanja Hofner, Maxim Integrated Products, Sunnyvale, CA Pushbutton replaces rotary switch - 26-Oct-00 EDN Design Ideas: The problem of setting any one of four modes of aµC-operated process has a straightforward solution Have the µC check the states of some 4 bits of aµC. Design by Abel Raynus, Armatron International Inc, Melrose, MA
Rearranged reference helps ADC measure its own supply voltage - 28-Apr-05 EDN Design Ideas: Clever topology allows self-measurement of power supply rail Design by Björn Starmark and Orville Buenaventura, Maxim Integrated Products Inc, Sunnyvale, CA, and Sören Käck, Audioväxlar, Sweden
Reduce voltage-reference output noise by half - 3-Feb-05 EDN Design Ideas: Reducing low-frequency (1/f] noise generated by an IC voltage reference can prove difficult. in theory, adding a lowpass filter to a reference's output reduces noise. in practice, a lowpass RC filter for suppression of noise frequencies below 10 Hz requires large values of series resistance and shunt capacitance Design by Alfredo H Saab and Steve Logan, Maxim Integrated Products Inc, Sunnyvale, CA
Reference Designs vs. Design Ideas: Related, or not? - EDN Design Ideas: 07/09/2013 The battle is on. Which do you prefer, Dis, or manufacturers' reference designs? Design
Reference Designs-Poll conclusions - 07/19/13 EDN Design Ideas: Our opinions are illuminated, and one or two surprises lurk, in the Reference Design poll results. Design by Michael Dunn
Reference Divide by 4 - The LT5400 is a quad resistor network with excellent matching specifications over the entire temperature range. All four resistors can be accessed and biased independently, making the LT5400 a convenient and versatile choice for any application that can benefit from matched resistors. These resistor networks provide precise ratiometric stability required in highly accurate difference amplifiers, voltage references and bridge circuits. __ Linear Technology/Analog Devices App Note, June 23, 2011
Reference Divider with Op Amp Input Bias Current Balancing - The LT5400 is a quad resistor network with excellent matching specifications over the entire temperature range. All four resistors can be accessed and biased independently, making the LT5400 a convenient and versatile choice for any application that can benefit from matched resistors. These resistor networks provide precise ratiometric stability required in highly accurate difference amplifiers, voltage references and bridge circuits. __ Linear Technology/Analog Devices App Note, June 23, 2011
Reference stabilizes exponential current - 10/25/01 EDN Design Ideas: in an antilog converter, the difference between the base voltages of two transistors sets the ratio of their collector currents The use of matched transistors balances the first-order temperature coefficient but leaves a temperature-dependent gain term, q/kT. Classic antilog circuits use a thermistor in the drive circuitry to correct this temperature dependency Design by Tom Napier, North Wales, PA
Regulator has One Active Part - 03/16/95 EDN Design Ideas: The regulator of unusual simplicity (ROUS) in Fig 1 derives a low-voltage, low-current output from rectified 115 to 270V ac. Pass transistor Q1 is the regulator's only active component. Design by Kennan C Herrick, ESI Electronics Corp San Francisco, CA
Regulator Makes Dual Tracking Reference - 11/07/96 EDN Design Ideas: You can use the venerable 723 voltage regulator in new and unusual ways. For example, you can modify its topology as in Figure 1 to yield a low-component-count, dual-polarity tracking voltage reference. The 723, a long-time standard in power-supply design, is a flexible IC that includes a temperature-compensated voltage reference, an error amplifier, Design by James Mears, National Semiconductor, Tacoma, WA
Robust 10MHz reference clock input protection & distributor for RF systems - 07/31/14 LTC Design Notes: Design a protected 10MHz reference input without degrading phase noise. Design by LTC Design Note
Simple Circuit Regulator Has One Active Part - 03/16/95 EDN Design Ideas: The regulator of unusual simplicity (ROUS) in Fig 1 derives a low-voltage, low-current output from rectified 115 to 270V ac. Pass transistor Q1 is the regulator's only active component. Design by Kennan C Herrick, ESI Electronics Corp San Francisco, CA
Stereo-amplifier IC's outputs drive multiple loads - 11/21/05 EDN Design Ideas: Reference provide as constant bias voltage regardless of supply-voltage variations Design by Jean-Jacques Avenel, Maxim Integrated Products, Lesigny, France
Supply Delivers Pin-Programmable Multiple References - 1-May-03 EDN Design Ideas: in the circuit of Figure 1, the REF01, IC 1, is a buried-zener-diode-based, precision 10V reference that features minimal noise and drift over temperature. The circuit provide as not only the 10V output of the REF01, but also a 5V output that a REF02 reference would deliver. in addition, the circuit provide as -5V, -10V, and an unbalanced dual reference, the sum of whose voltages is precisely 10V Design by V Manoharan, Kochi, India
Supply Savess From Lax Predecessor - 11/23/94 EDN Design Ideas: The lab supply in Fig 1 automatically sets its output voltage to zero whenever you switch it on. Thus, the lab supply can't fry your circuit if the previous user left the voltage turned up too high. The circuit supplies 1 to 25V dc because it uses an LM317 regulator. When you turn on the supply, the bridge develops Design by Tian Jin-gin, Taiyuan Semiconductor Factory, Taiyuan, Shanxi, China
Two AA cells power step-down regulator - 01/07/99 EDN Design Ideas: (Scroll to find this one) DC/DC conversion is particularly challenging when both the input and output voltages are low. Step-up ICs that operate with inputs lower than 1V are available, but step-down ICs that accept input voltages Page includes several designs. Design by Len Sherman, Maxim Integrated Products, Sunnyvale, CA
Ultra Low Drop Linear Regulator - The circuit is a MOSFET based linear voltage regulator with a voltage drop of as low as 60 mV at 1 ampere. Drop of a fewer millivolts is possible with better...__ Electronics Projects for You
Use Two Reference Voltages to Improve Hysteresis Accuracy - 01/07/10 EDN Design Ideas: increase the hystereis of your comparator by switching between two reference voltages Design by Marián Stofka, Slovak University of Technology, Bratislava, Slovakia
Voltage reference improves JFET - 26-Oct-00 EDN Design Ideas: The common JFET current-source in Figure 1a has average output impedance and depends heavily on the JFET's VP and iDSS variations. These manufacturing variations limit the initial accuracy of the current setpoint that the circuit can obtain with a fixed R1. Most users of JFET current-sources sample VPPDF has several circuits, scroll to find this one Design by Clayton Grantham, National Semiconductor, Tucson, AZ
|
