Did You Know...
...that a workman who left the soap mixing machine on too long was responsible for making Ivory Soap? He was so embarrassed by his mistake that he threw the mess in a stream. Imagine his dismay when the evidence of his error floated to the surface! Result: Ivory soap, the soap that floats.
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| Number | Title | Issue Date |
| 8154343 | High dynamic range low-power differential input stage A low-power high dynamic range RF input stage (200) with a noiseless degeneration component, such as a capacitor (201), is provided. High dynamic range means a combination of low noise contribution by the stage (200) and a low level of intermodu... | 04/10/2012 |
| 8125272 | Low power wide-band amplifier with reused current In one embodiment, an apparatus includes a first amplification block configured to receive a signal. A second amplification block is configured to output the signal where the outputted signal is amplified. The isolation circuit allows reuse of a current flowing thro... | 02/28/2012 |
| 8120424 | Class AB output stages and amplifiers including class AB output stages A buffer stage includes a flipped voltage follower and an emitter follower. The flipped voltage follower is connected between a high voltage rail and a low voltage rail and include an input and an output. The emitter follower is also connected between the high volta... | 02/21/2012 |
| 8054131 | Transconductor circuit A transconductor circuit, particularly according to the multi-tanh principle, having a first input node and a second input node, a first differential amplifier coupled to the first and second input nodes, and having a first offset voltage, and a second differential ... | 11/08/2011 |
| 7956685 | Adaptive operational transconductance amplifier load compensation A buffer varies the size of its output stage in response to a varying capacitive load. The capacitive load may vary in a predictable or a random manner. The buffer includes an operational amplifier having an output stage of multiple transistors, selectively connecte... | 06/07/2011 |
| 7924092 | Inter-stage matching network to enhance common mode stability A two stage amplifier with an inter-stage matching network constituted of a first and a second transistor forming a differential first stage, a third and a fourth transistor forming a differential second stage, an on-chip connection path connecting the emitters of t... | 04/12/2011 |
| 7876153 | Transconductor circuit A transconductor circuit, particularly according to the multi-tanh principle, having a first input node and a second input node, a first differential amplifier coupled to the first and second input nodes, and having a first offset voltage, and a second differential ... | 01/25/2011 |
| 7816987 | Driver circuit and driver IC A driver circuit comprises: differential amplification stages connected in series, and at least two cross-point adjuster circuits respectively connected to at least two differential amplification stages of the differential amplification stages. The cross-point adjus... | 10/19/2010 |
| 7812671 | Transformer and structure thereof and power amplifier A transformer and a structure thereof and a power amplifier are provided. The transformer includes a first inductor to a fourth inductor, a first capacitor, and a second capacitor. A first terminal of the first inductor receives a first signal. A first terminal of t... | 10/12/2010 |
| 7808317 | Baseband filter start-up circuit An electrical circuit includes an amplifier. The amplifier includes an input circuit in communication with an input of the amplifier. A start-up circuit is in communication with the input circuit. The start-up circuit is configured to generate a start-up signal to e... | 10/05/2010 |
| 7800445 | Low headroom X-bridge transconductor A transconductance cell includes a positive rail for providing a positive power supply voltage and a negative rail for providing a negative power supply voltage. A pair of voltage inputs, one inverting and one non-inverting, develop a differential voltage input sign... | 09/21/2010 |
| 7760019 | Adaptive operational transconductance amplifier load compensation A buffer varies the size of its output stage in response to a varying capacitive load. The capacitive load may vary in a predictable or a random manner. The buffer includes an operational amplifier having an output stage of multiple transistors, selectively connecte... | 07/20/2010 |
| 7746168 | Bias circuit A bias circuit of a resistance load differential amplifier comprises a first differential pair and a control unit for controlling a tail current of the first differential pair, and making an output current of the first differential pair being in inverse proportion t... | 06/29/2010 |
| 7728667 | Differential amplifier A differential amplifier is constituted of first emitter-follower transistors, second emitter-follower transistors, and amplification transistors whose bases are alternately connected to the emitters of the second emitter-follower transistors and whose collectors ar... | 06/01/2010 |
| 7719357 | Differential amplifier with a plurality of input pairs The present invention provides a differential amplifier with a plurality of input pairs. The differential amplifier not only includes a differential amplifier with a single input pair but also includes a pair of transistors and a current source to provide the input ... | 05/18/2010 |
| 7710197 | Low offset envelope detector and method of use A system for processing a signal is provided. The system includes a differential amplifier receiving a radio-frequency input signal at a first differential input. A rectifying device such as a transistor has a control terminal that is coupled to an output of the dif... | 05/04/2010 |
| 7679442 | Output distortion cancellation circuit An output distortion circuit includes a first transistor arrangement receiving a nonlinear current associated with a nonlinear differential error signal. The first transistor arrangement produces a reflected base current that is applied to one side of a differential... | 03/16/2010 |
| 7667539 | Low-voltage wide-range linear transconductor cell An improved low-voltage, low-power, wide range, and linear Gm Cell is disclosed. In one embodiment, a method of linearizing output current with an input voltage using a Gm Cell includes receiving an input differential voltage by an emitter degenerated input stage an... | 02/23/2010 |
| 7663437 | Low flicker noise operational amplifier A low flicker noise operational amplifier comprises two circuit branches of the same topology and a plurality of current source pairs. For each current source pair, the two current sources are commutatively steered into the two circuit branches via two sets of diffe... | 02/16/2010 |
| 7619472 | Noise-shaped blocker-reject amplifier A fully differential amplifier that amplifies and filters a signal band of a communications channel, the signal band including a desired signal and at least one blocker signal of an adjacent communications channel, the fully differential amplifier includes a fully d... | 11/17/2009 |
| 7570112 | Ultrasound imaging or other use variable input impedance preamplifier A preamplifier has a variable input impedance. The input impedance is tailored with the signal level to maintain a more optimal performance. The input impedance is varied by at least two amplifiers connected in parallel. Each amplifier has a different input impedanc... | 08/04/2009 |
| 7521996 | Differential amplifier and radio system with a differential amplifier A radio system for communication is provided that has a differential amplifier for amplifying a transmission frequency, particularly 2.4 GHz, wherein the differential amplifier has a first inductor, which is magnetically coupled to a second inductor, and a capacitor... | 04/21/2009 |
| 7459975 | Baseband filter start-up circuit An amplifier comprises an input circuit that receives an input to the amplifier. A start-up circuit communicates with the input circuit, generates a start-up signal, and turns off the start-up signal when an output of the amplifier reaches a threshold voltage. The s... | 12/02/2008 |
| 7442913 | Photocurrent amplifier circuit and optical pick-up device A photocurrent amplifier circuit is capable of selectively amplifying one or more of photocurrents which are respectively obtainable from plural receiving devices, and can be realized to have a small size. The photocurrent amplifier circuit includes: light receiving... | 10/28/2008 |
| 7439776 | Technique to increase the speed of a peak detector A peak detector can advantageously increase its bandwidth, i.e. its charging and discharging speed, while minimizing the ripple of its output signal by sensing the charging current of a storage device. In response to that charging current, the peak detector can cont... | 10/21/2008 |
| 7436261 | Operational amplifier An operational amplifier includes: a differential amplifier circuit configured to receive an inverting input voltage (VIN−) and a non-inverting input voltage (VIN+); and an auxiliary circuit for improving a slew rate of an output voltage of the differential amplif... | 10/14/2008 |
| 7425865 | Differential cascode amplifier A differential cascode amplifier is disclosed that includes in each branch two transistors connected to form a cascode circuit, and has a cross-compensation (neutralization) with at least one pair of capacitors for compensating a parasitic capacitance of a transisto... | 09/16/2008 |
| 7423485 | Differential circuit with improved linearity A differential circuit includes main transistors differentially coupled for converting differential input signals into main differential currents at output terminals. The differential circuit also includes compensation transistors coupled to the main transistors for... | 09/09/2008 |
| 7420497 | Low offset flash analog-to-digital converter A quantizer is described for use in a flash analog to digital converter (ADC), which may be implemented as part of an integrated wireless transceiver or other highly integrated electrical circuit. The quantizer may be configured to operate within such a flash ADC in... | 09/02/2008 |
| 7418213 | Transimpedance amplifier with integrated filtering and reduced parasitic capacitance A transimpedance amplifier (TIA) with integrated filtering. A capacitance is integrated into the TIA and connected to the power supply and to an internal ground of the TIA. Noise on the power supply of the transimpedance amplifier is filtered by the capacitor such t... | 08/26/2008 |
| 7414441 | Output buffer circuit An output buffer circuit includes an input stage of which one end receives an input voltage and the other end receives an output voltage; a class AB output stage that increases a current flowing in the output stage when the difference between the input and output vo... | 08/19/2008 |
| 7415286 | Gain boosting for local oscillation distribution circuitry A multi-band integrated circuit radio transceiver comprising receive and transmit radio front end circuit blocks further includes a local oscillation generator for generating a local oscillation for use by the receive and transmit radio front end circuit blocks to d... | 08/19/2008 |
| 7414456 | Constant ratio current source A constant ratio current source comprises a first current branch which includes a first transistor that conducts a current I1 from a first current input to a first node and a resistor R1 connected between the first node and a circuit common point, and ... | 08/19/2008 |
| 7411451 | Class AB folded cascode stage and method for low noise, low power, low-offset operational amplifier An amplifier circuit includes an pair of input transistors, the drains of which are connected to emitters of first and second cascode transistors. First and second controlled current sources are connected to the emitters of the first and second cascode transistors, ... | 08/12/2008 |
| 7405625 | Common-mode control structures and signal converter systems for use therewith Control structures are provided to accurately maintain amplifier common-mode levels at the predetermined level of a common-mode reference voltage Vcm. The disclosed control structures provide amplifier feedback along a first feedback path that is configur... | 07/29/2008 |
| 7389087 | Adaptive radio transceiver with filtering An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a controller, and a self-testing unit. All of these components can be packaged ... | 06/17/2008 |
| 7385448 | Circuitry for adaptively generating and using a reference voltage a circuit for an RFID device in one embodiment includes an operational amplifier having a first input, a second input, and an output where the first input receives an incoming signal, arid the second input is coupled to the output via a feedback loop. An operational... | 06/10/2008 |
| 7382196 | UHF active antenna amplifier for digital video broadcast (DVB) receiver and related DVB device An active UHF amplifier includes a transistor having a base for receiving signals, a grounded emitter, and a collector for outputting signals, a first inductor having a first end for coupling to a voltage source, the inductance of the first inductor being between 10... | 06/03/2008 |
| 7382198 | Differential amplifier circuitry formed on semiconductor substrate with rewiring technique In differential amplifier circuitry formed on a semiconductor substrate, first and second transistors constitute a differential pair of the differential amplifier circuitry. First and second pads are connected with emitters of the first and second transistors, respe... | 06/03/2008 |
| 7372328 | Amplification circuit for driving a laser signal A method of filtering a differential signal. The method includes receiving the differential signal. Transitions of the differential signal are accelerated after the differential signal has passed through a cross-over point to create an accelerated differential signa... | 05/13/2008 |
