HOME / What is a programmable capacitor

What is a programmable capacitor

Programmable Capacitor Arrays

Qorvo offers a family of programmable capacitor arrays used in a variety of RF applications including tunable filters, matching networks, phase shifters and frequency sources. Products come in either a single tunable cap or a multiple tunable cap configuration in

Get Price

Electrically Variable or Programmable Nonvolatile

Capacitances are measured using small AC signals or changed using larger pulses. Electrically variable or programmable capacitors based on the unique properties of thin perovskite films are undergoing development. These

Get Price

MAX1474 Datasheet and Product Info | Analog Devices

The MAX1474 is a fine-line (geometry) electronically trimmable capacitor (FLECAP) programmable through a simple digital interface. There are 32 programmable capacitance values ranging from 6.4pF to 13.3pF in 0.22pF increments (see Table 1). The quartz dielectric capacitance is highly stable and exhibits a very low voltage coefficient.

Get Price

A Differential Switched-Capacitor Amplifier with Programmable

capacitor in 3 sets (C1-1, C1-2 and C1-3) of unit capacitors (Cu) as long as C2 is also set to be equal to Cu. By default C1-1 = 12Cu and C1-2 = 4Cu define the sampling capacitor, so (C1/C2) = 16. By adding C1-3 = 4Cu to the sampling capacitor, the amplifier gain becomes 20 whereas taking off C1-2 from the default value, the gain is set to 12.

Get Price

Digitally Programmable Capacitors

Digitally programmable capacitors allow users to customize the release of stored charges to meet specific requirements for given electrical processes. For example, OCXO oscillators and

Get Price

A Programmable Capacitor for Inductance Measurements

This paper describes a programmable capacitor intended for use as the reference impedance in an inductance measurement system. The capacitor is programmable from 1 pF to 39 μF with a resolution of 1 pF and consists of a parallel combination of commercially available capacitors with values that follow the Fibonacci series progression. This paper

Get Price

Built-In-Self-Testing Techniques for Programmable Capacitor

programmable capacitor arrays (PCAs), which are essential components in various FPAAs and programmable filters. The previous studies in [10, 40] discuss techniques to mea-sure capacitor ratios for detecting parametric faults in switched-capacitor (SC) circuits. The method proposed in [10] converts capacitor ratios into voltage outputs. In order to have accurate capacitor ratio

Get Price

Programmable Capacitor Arrays

Qorvo offers a family of programmable capacitor arrays used in a variety of RF applications including tunable filters, matching networks, phase shifters and frequency sources. Products

Get Price

Programmable MEMS capacitor arrays

We describe a programmable capacitor technology under development at NCSU and its potential application in building programmable interconnect devices useful for system level connectivity functions, phased array beam steering, and RF switching. Crossbars are made from arrays of electrostatically controlled bistable MEMS-based capacitors. These new devices

Get Price

A digitally programmable capacitance standard

cross capacitor with a precise value. This article reports a method to construct a digitally pro-grammable capacitance standard by modifying a commercial fused-silica capacitor which consists of 23 approximately binary-weighted capacitors on a single fused-silica disk. The resultant variable capacitor can be programmed through a

Get Price

Miniature Electronically Trimmable Capacitor

The MAX1474 is a fine-line (geometry) electronically trim-mable capacitor (FLECAP) programmable through a simple digital interface. There are 32 programmable capacitance values ranging from 6.4pF to 13.3pF in 0.22pF increments (Table 1). The quartz dielectric capacitance is highly stable and exhibits a very low volt-age coefficient.

Get Price

Programmable MEMS capacitor arrays

We describe a programmable capacitor technology under development at NCSU and its potential application in building programmable interconnect devices useful for system level connectivity functions, phased array beam steering, and RF switching. Crossbars are made from arrays of electrostatically controlled bistable MEMS-based

Get Price

Programmable capacitors

Been playing on and off (mostly off) with the AS3935 lightning detector that includes programmable (SPI) capacitors for antenna tuning. The available choices for

Get Price

Programmable Gain Amplifier (PGA)

The block has a programmable capacitor in parallel with the feedback resistor, Rb. The value of the capacitor is configured for each gain selection to achieve guaranteed stability. Reassigning Rb values without also selecting the appropriate feedback capacitor value may result in PGA instability. The user is strongly advised to use the provided

Get Price

Electrically Variable or Programmable Nonvolatile Capacitors

Capacitances are measured using small AC signals or changed using larger pulses. Electrically variable or programmable capacitors based on the unique properties of thin perovskite films are undergoing development. These capacitors show promise of overcoming two important deficiencies of prior electrically programmable capacitors:

Get Price

Miniature Electronically Trimmable Capacitor

The MAX1474 is a fine-line (geometry) electronically trim-mable capacitor (FLECAP) programmable through a simple digital interface. There are 32 programmable capacitance

Get Price

MAX1474 Datasheet and Product Info | Analog Devices

The MAX1474 is a fine-line (geometry) electronically trimmable capacitor (FLECAP) programmable through a simple digital interface. There are 32 programmable

Get Price

Digitally Programmable Capacitors

Digitally programmable capacitors allow users to customize the release of stored charges to meet specific requirements for given electrical processes. For example, OCXO oscillators and capacitive sensors perform many functions. Programming a crystal or sensor''s capacitor to deliver a range of charges optimizes each function. Digitally

Get Price

RFSOI programmable array of capacitors | Semantic Scholar

Some of the techniques and tradeoffs involved in the design of a programmable array of capacitors (PAC) are highlighted and the implication of over specification on obtainable Q discussed. Tunable capacitors are increasingly important components in today''s state of the art RF front ends. They enable a degree of tuning and configurability that is essential in today''s

Get Price

Programmable capacitors developed at NIST

NIST has produced several digitally programmable capacitance standards based on a modification of a fixed commercial fused-silica capacitance standard. The commercial device

Get Price

A switched-capacitor Programmable Gain Amplifier optimized

The design of a 12-bit fully differential Switched-Capacitor (SC) Programmable Gain Amplifier (PGA) optimized for motor control application and implemented using Correlated Double Sampling (CDS) technique is described. This paper describes the design of a 12-bit fully differential Switched-Capacitor (SC) Programmable Gain Amplifier (PGA) optimized for motor

Get Price

Programmable capacitors developed at NIST

NIST has produced several digitally programmable capacitance standards based on a modification of a fixed commercial fused-silica capacitance standard. The commercial device consists of 23 capacitors of roughly binary values that have been configured to combine via computer control to produce any capacitance value in the range from about 0.1 fF

Get Price

IXYS Integrated Circuits NCD2100 Digital

IXYS Integrated Circuits NCD2100 Digital Programmable Capacitors feature an EEPROM-based, digitally programmable variable capacitor that provides capacitive offset trimming for capacitance-sensitive circuits. Programming the

Get Price

Programmable MEMS capacitor arrays

We describe a programmable capacitor technology under development at NCSU and its potential application in building programmable interconnect devices useful for system

Get Price

Programmable capacitors

Been playing on and off (mostly off) with the AS3935 lightning detector that includes programmable (SPI) capacitors for antenna tuning. The available choices for dedicated programmable capacitor IC''s seem quite limited on DigiKey. Here is what I found:

Get Price

MAX1474 Datasheet and Product Info | Analog Devices

The MAX1474 is a fine-line (geometry) electronically trimmable capacitor (FLECAP) programmable through a simple digital interface. There are 32 programmable capacitance values ranging from 6.4pF to 13.3pF in 0.22pF increments (see Table 1). The quartz dielectric capacitance is highly stable and exhibits a very low voltage coefficient

Get Price

Capacitor in Electronics – What It Is and What It Does

A capacitor is an electrical component that stores energy in an electric field. It is a passive device that consists of two conductors separated by an insulating material known as a dielectric. When a voltage is applied across

Get Price

A programmable capacitor for inductance measurements

This paper describes a programmable capacitor intended for use as the reference impedance in an inductance measurement system. The capacitor is programmable from 1 pF to 39 μF with a resolution of 1 pF and consists of a parallel combination of commercially available capacitors with values that follow the Fibonacci series progression. This

Get Price

IXYS Integrated Circuits NCD2100 Digital Programmable Capacitors

IXYS Integrated Circuits NCD2100 Digital Programmable Capacitors feature an EEPROM-based, digitally programmable variable capacitor that provides capacitive offset trimming for capacitance-sensitive circuits. Programming the non-volatile EEPROM register value or implementing on-demand capacitance value changes are easily accomplished via a

Get Price
What is a programmable capacitor
What is a programmable capacitor [PDF]

6 FAQs about [What is a programmable capacitor]

Are there digitally programmable capacitance standards?

Abstract: NIST has produced several digitally programmable capacitance standards based on a modification of a fixed commercial fused-silica capacitance standard.

How many programmable capacitance values are there?

There are 32 programmable capacitance values ranging from 6.4pF to 13.3pF in 0.22pF increments (Table 1). The quartz dielectric capacitance is highly stable and exhibits a very low volt-age coefficient. It has virtually no dielectric absorption and has a very low temperature drift coefficient (<33ppm/°C).

What is the quality factor of a trimmable capacitor?

Since the capacitors have the multiplexer series resis-tance associated with them, the quality factor of the trimmable capacitors is not high. For example, a 10pF capacitor only has a theoretical Q of about 10 at 315MHz with 5 series resistance.

What is a capacitive sensor?

A capacitive sensor is usually made of two capacitors. One capacitor (CM) changes with the sensed function, such as pressure, acceleration, or humidity. The sec-ond capacitor (CR) is used as a reference capacitance that does not vary with the sensed function.

What is a ncd2100 digital programmable capacitor?

IXYS Integrated Circuits NCD2100 Digital Programmable Capacitors feature an EEPROM-based, digitally programmable variable capacitor that provides capacitive offset trimming for capacitance-sensitive circuits.

What is a sec-ond capacitor?

The sec-ond capacitor (CR) is used as a reference capacitance that does not vary with the sensed function. In most applications, it is needed to detect the difference between these capacitance values. Due to manufactur-ing tolerances, there are normally offsets between CM and CR, which can easily be nulled out by the FLECAP as shown in Figure 4.

Random Links

Maximize Your Energy Independence with Advanced Solar Storage

We specialize in cutting-edge photovoltaic energy storage solutions, delivering high-efficiency battery cabinets for reliable and clean power.