(editor’s note: Intrigued by the problem? Have a question or another solution? Then click the “Read more” link and follow the conversation on EDAboard.com or log in to EDAboard and participate in the analog forum threads.) Simulate a simple differential amplifier – My current source is 50 uA but the drain current of M16, M29 […]
Amplifiers
Are your op amps pumped?
I was recently thinking about the issues surrounding rail to rail input opamps and the problems of making them low distortion – a problem I have had to overcome when designing integrated circuits for instrumentation applications. Some rail to rail opamps use two input stages – one using NMOS input transistors, the other using PMOS […]
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Diff amp delivers 15 dB gain to 1.4 GHz
Analog Devices, Inc. announces the LTC6432-15, a wideband fully differential amplifier with 15dB gain, offering linearity of up to +50.3dBm OIP3 (output third-order intercept), very high OP1dB (output 1dB compression point) of +22.7dBm, and 3.2dB noise figure at 150MHz. In addition to its outstanding signal-to-noise at high frequencies, it maintains its dynamic range performance even […]
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The voltage follower or unity gain amplifier in a voltage divider
A voltage follower is also known as a unity gain amplifier, a voltage buffer, or an isolation amplifier. In a voltage follower circuit, the output voltage is equal to the input voltage; thus, it has a gain of one (unity) and does not amplify the incoming signal. The voltage follower does not need any external […]
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Top analog threads on EDAboard.com – April
(editor’s note: Intrigued by the problem? Have a question or another solution? Then click the “Read more” link and follow the conversation on EDAboard.com or log in to EDAboard and participate in the analog forum threads.) Long distance cell phone detector – I found these schematics on a circuit diagram website. After building it many […]
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Dual differential amp/ADC driver delivers 10 GHz gain-bandwidth with 1.1nV/√Hz noise
Analog Devices, Inc., which recently acquired Linear Technology Corporation, announces the LTC6419, a dual 10GHz gain bandwidth product differential amplifier with very low input voltage noise density of 1.1nV/√Hz, delivering outstanding SNR performance for wideband signal amplification. Additionally, the LTC6419 offers low distortion, providing 85dB spurious-free dynamic range (SFDR) at 100MHz while driving 2VP-P signals. […]
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New test suite covers smart lighting interoperability
The TALQ Consortium, developers of the global standard interface for smart outdoor lighting networks, have just released the formal beta version of the entire TALQ Test Suite for its members. With this test tool companies can now start testing their smart lighting solutions for multi-vendor interoperability. The Test Suite will allow first products to be […]
What are some specialized op amp variations?
The operation amplifier – commonly called the op amp – is the key building block of analog circuits. In its basic configuration, it is most often used to amplify a signal, of course. It can also be configured to perform mathematical operations such as implementing multiplication or division of two signals, take a square root, […]
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Working with op amps: tying down floating pins
Operational amplifiers are used in many configurations and with many variations on specifications, depending upon the application. However, an IC package of operational amplifiers will often come with several in a package (e.g., a “quad pack” will have four op amps). If you have leftover, unused op amps on the same chip, the unused ones […]
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Ultra-broadband amplifiers have output power of tube amplifiers in compact, solid-state modules
Qorvo has introduced three new solid-state power amplifier (SSPA) modules that further expand the power and frequency range of the company’s Spatium® amplifier family. The modules are optimized for electronic warfare applications, enabling defense customers to use ultra-wideband SSPA technology as an alternative to traveling wave tube amplifiers (TWTAs). “The need for wider bandwidth, higher frequency […]
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