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Amplifiers/Converters??

STMicro releases op-amps in tiny packages

Posted: 08 Mar 2004 ?? ?Print Version ?Bookmark and Share

Keywords:stmicroelectronics? operational amplifier? tsh8x? tsh80? tsh81?

STMicroelectronics has introduced a low-cost family of wide-band, negative input rail and output rail-to-rail operational amplifiers in tiny packages.

According to the company, the TSH8x meets the requirements of high-volume video applications such as RGB signal driving and switching, which need high-performance signal amplification and signal conditioning.

The TSH80, TSH81, and TSH82 come with single, single standby and dual-voltage feedback op-amps, respectively. Each device features a gain/bandwidth product of 100MHz and a slew rate of 100V/?s. The output stage is optimized for driving a 150-ohm load. These features combine to deliver a total harmonic distortion figure of -61dB at 4MHz for output amplitude of 1Vpp into a 150-ohm load, with a 5V supply.

The product family has a differential gain of 0.5 percent and a differential phase of 0.5 at 4.5MHz. Gain flatness is 0.2dB at 6MHz for a gain of 2. They also offer a negative input rail combined with a rail-to-rail output stage (48mV from rail), which matches the needs of RGB video signal amplification with no coupling capacitor while keeping a single 5V power supply.

The amplifiers have a quiescent current of 8mA and an equivalent input voltage noise of 11nV/sqrt-Hz. They operate from 4.5V to 12V dual- or single-supply voltages and they are tested in full production at 2.5V and 5V.

The TSH81 additionally features a standby function, with a maximum power consumption of 55?A and high output impedance.

The TSH80 is available in both SOT23-5L and SO-8 plastic packages, while the TSH81 and TSH82 are offered in TSSOP8 and SO-8 plastic packages.





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