OPA380AID High-Speed Transimpedance Amplifier

DESCRIPTION
The OPA380 family of transimpedance amplifiers provides high-speed (90MHz Gain Bandwidth [GBW]) operation, with extremely high precision, excellent long-term stability, and very low 1/f noise. It is ideally suited for high-speed photodiode applications. The OPA380 features an offset voltage of 25V, offset drift of 0.1V/C, and bias current of 50pA. The OPA380 far exceeds the offset, drift, and noise performance that conventional JFET op amps provide. The signal bandwidth of a transimpedance amplifier depends largely on the GBW of the amplifier and the parasitic capacitance of the photodiode, as well as the feedback resistor. The 90MHz GBW of the OPA380 enables a transimpedance bandwidth of > 1MHz in most configurations. The OPA380 is ideally suited for fast control loops for power level on an optical fiber. As a result of the high precision and low-noise characteristics of the OPA380, a dynamic range of 5 decades can be achieved. This capability allows the measurement of signal currents in the order of 10nA, and up to 1mA in a single I/V conversion stage. In contrast to logarithmic amplifiers, the OPA380 provides very wide bandwidth throughout the full dynamic range. By using an external pulldown resistor to -5V, the output voltage range can be extended to include 0V. The OPA380 (single) is available in MSOP-8 and SO-8 packages. The OPA2380 (dual) is available in the miniature MSOP-8 package. They are specified from -40C to +125C.

MicroSize PACKAGE: MSOP-8

SINGLE AND DUAL VERSIONS

SUPPLY RANGE: 2.7V to 5.5V

QUIESCENT CURRENT: 6.5mA

GAIN BANDWIDTH: 90MHz

 DRIFT: 0.1V/C (max)

 INPUT CURRENT RANGE: 10nA to 1mA

OFFSET VOLTAGE: 25V (max)

BIAS CURRENT: 50pA (max)

EXCELLENT LONG-TERM VOS STABILITY

FEATURES
1MHz TRANSIMPEDANCE BANDWIDTH

OPA380AID
Precision, High-Speed Transimpedance Amplifier
TI original and ROHS
stock