Texas Instruments (TI) Unveils Precision Transimpedance Amplifier for High-Speed Photodiode Applications

Texas Instruments OPA380 OPA2380

April 22, 2004- Texas Instruments Incorporated (TI) announced a transimpedance amplifier from the company's Burr-Brown product line which features 90MHz gain bandwidth, less than 25uV offset and inherent temperature and long-term stability. The device is ideal for a broad range of high-speed photodiode applications, including optical power monitoring, security scanners, medical diagnostics and current measurement in test equipment. (See'www.ti.com/sc04105.)
The 90MHz gain bandwidth of the OPA380 enables a transimpedance bandwidth of >1MHz in most configurations. As a result of the 25uV maximum offset voltage and 0.1uV/C offset drift, a dynamic range of five decades can be achieved, which allows the measurement of signal currents from, for example, 10nA to 1mA. In contrast to logarithmic amplifiers, the OPA380 provides very wide bandwidth throughout the full dynamic range. Other features include 50pA bias current, 6.5mA quiescent current and a 2.7V to 5.5V supply range.

Available Today
The OPA380 is packaged in an MSOP-8 and SO-8, and is available now from TI and its authorized distributors. The device is priced from $1.95 in 1,000 piece quantities (suggested resale pricing). The OPA2380 (dual version) will be available in 2Q 2004.

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