摘要:
An integrated circuit includes a first and a second amplifier circuit each driven by an input signal. The first and second amplifier circuits generate a first and a second control signal on the output side. The control signals are generated independently of one another and drive a first and second controllable resistor of a third amplifier circuit for generating a third control signal. The third control signal is fed back to the first and second amplifier circuits. Depending on the resistance value of the first and second controllable resistors of the third amplifier circuit, an output signal amplified with respect to the input signal is generated at an output terminal of the integrated circuit. The integrated circuit is an input amplifier of an integrated semiconductor memory and permits the input signal to be amplified with a gain independent of a level of the DC component of the input signal.
摘要:
An integrated semiconductor memory (100) comprises a controllable voltage generator (30) for precharging bit lines (BL) of a memory cell array (10) to a precharge voltage (VEQ). During the read-out of a first and second memory state of memory cells (SZ) which are connected to the bit lines, a first and second signal swing (ΔUH, ΔUL) occurs on the bit lines, as a result of which the bit lines are charged to a first and a second voltage potential (V1, V2). For the purpose of precharging the bit lines to the precharge voltage (VEQ), a first equalize current (I1) and a second equalize current (I2) are fed onto the bit lines by the controllable voltage generator (30), the current intensity of said currents in each case being measured by a detector circuit (60). A control circuit (20) alters the precharge voltage (VEQ) until the first and second equalize currents (I1, I2) have identical magnitudes. The precharge voltage is then centered with respect to the first and second voltage potentials (V1, V2).
摘要:
An ancillary reducing reagent composition is used to significantly reduce and substantially eliminate the incidence of false positive results in an immunoassay for the detection of antibodies to Hepatitis A virus. The reducing agent contained in the ancillary reducing reagent composition is a sulfhydryl compound buffered to a pH sufficient to prevent oxidation of the reducing agent.
摘要:
The invention relates to a method for producing a TFA image sensor in which a multi-layer arrangement comprising a photo diode matrix is arranged on an ASIC switching circuit provided with electronic circuits for operating the TFA image sensor, such as pixel electronics, peripheral electronics and system electronics, for the pixel-wise conversion of electromagnetic radiation into an intensity-dependent photocurrent, the pixels being connected to contacts of the underlying pixel electronics of the ASIC switching circuit. The method enables conventionally produced ASIC switching circuits to be used without impairing the topography of the photoactive sensor surface. The CMOS passivation layer in the photoactive region and then the upper CMOS metallization are removed and replaced by a metallic layer which is structured in the pixel raster, for the formation of back electrodes. The photo diode matrix is then applied and structured, said photo diode matrix being embodied as a pixel matrix, on which a passivating protective layer and/or a color filter layer having a passivating action can be applied.
摘要:
The memory cell according to the invention has a vertical selection transistor, via whose channel region the inner electrode of the trench capacitor can be connected to a bit line. The large extent of the channel region in the bit line direction means that the trench capacitor can be rapidly charged and read. The channel region is led to the bit line through an associated word line, which completely or partially encloses the channel region. A conductive channel can be formed within the channel region depending on the potential of the word line.
摘要:
The invention relates to a method for controlling the reading-in of a data signal at an input of an electrical circuit to an input latch with the aid of a clock signal, with the data item, which is indicated by the data signal, being transferred to the input latch with a clock edge of the clock signal, with the clock edge of the clock signal being shifted in time as a function of a time delay between a signal edge of the input signal at the input and the clock edge, such that the time delay between the signal edge of the data signal and the clock edge is within a predetermined time window.
摘要:
An integrated circuit has a voltage divider that is configured to save current. The circuit includes a capacitor that is inventively connected to a potential sink or potential source by way of a charge branch even when the voltage divider is inactive. The capacitor is thus held at a charge state that corresponds to the charge state given an active voltage divider. The voltage divider thus becomes functional in a shorter time following activation, because the capacitor does not require recharging.
摘要:
A novel method is provided for the manufacture of escitalopram. The method comprises chromatographic separation of the enantiomers of citalopram or an intermediate in the production of citalopram using a chiral stationary phase such as Chiralpak™ or Chiralcel™ OD. Novel chiral intermediates for the synthesis of Escitalopram made by said method are also provided.
摘要:
An integrated semiconductor circuit, having active components lying in mutually adjoining wells of a respective first and second conduction type, wherein the active components respectively are associated with substrate contacts lying in direct proximity to an edge bounding the mutually adjoining wells, is disclosed. Preferably, structures of the active components other than the contacts are arranged to lie further away from the edge and the circuit/layout structures are not mirror-symmetrical with respect to a center line of the circuit chip.
摘要:
The enumeration and analysis of residual white blood cells in a sample of leukocyte-reduced blood products is conducted by forming a suspension of the leukocyte-reduced blood products with a sufficient amount of a lysing reagent. The lysing reagent comprises a buffer with a low molar concentration, and a non-ionic surfactant. The suspension of leukocyte-reduced blood products and the lysing reagent is incubated for a sufficient time at a temperature sufficient to selectively lyse the platelets and red blood cells without damaging the white blood cells. The white blood cells of the lysed blood products are then contacted with a suitable dye to stain the white blood cells and the number of stained white blood cells is measured. The lysing reagent is free of harsh organic solvents which can damage the plastic components of automated clinical analyzers.