OPA381AIDGKR ,Precision/ Low Power/ 18MHz Transimpedance AmplifierMAXIMUM RATINGSVoltage Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..
OPA381AIDRBR ,Precision/ Low Power/ 18MHz Transimpedance AmplifierELECTRICAL CHARACTERISTICS: V = +2.7V to +5.5V SBoldface limits apply over the temperature range, ..
OPA3832IPW ,Triple, Low-Power, High-Speed, Fixed-Gain Operational Amplifier 14-TSSOP -40 to 85ELECTRICAL CHARACTERISTICS: V = ±5VSBoldface limits are tested at +25°C.At T = +25°C, G = +2V/V, an ..
OPA3875IDBQ ,Triple 2:1 High-Speed Video Multiplexer 16-SSOP ELECTRICAL CHARACTERISTICS: V = ±5VSAt G = +2, R = 150Ω, unless otherwise noted.LOPA3875MIN/MAX OVE ..
OPA404AG ,Quad High Speed Precision Difet® Operational AmplifierFEATURESAPPLICATIONSl WIDE BANDWIDTH: 6.4MHzl PRECISION INSTRUMENTATIONl HIGH SLEW RATE: 35V/μsl OP ..
OPA404BG ,Quad High Speed Precision Difet® Operational AmplifierOPA404Quad High-Speed Precision® Difet OPERATIONAL AMPLIFIER
P8051AHP , MCS51 8-BIT CONTROL-ORIENTED MICROCONTROLLERS
P8051AHP , MCS51 8-BIT CONTROL-ORIENTED MICROCONTROLLERS
P8085AH-1 , 8-Bit HMOS MICROPROCESSORS 3MHz, 5 MHz and 6 MHz Selections Avallable
P8095BH , COMMERCIAL/EXPRESS HMOS MICROCONTROLLER
P80C152JA , UNIVERSAL COMMUNICATION CONTROLLER 8-BIT MICROCONTROLLER
P80C152JC , UNIVERSAL COMMUNICATION CONTROLLER 8-BIT MICROCONTROLLER
OPA381AIDGKR-OPA381AIDRBR
Precision, Low Power, High-Speed Transimpedance Amplifier
FEATURES OVER 250kHz TRANSIMPEDANCE
BANDWIDTH DYNAMIC RANGE: 5 Decades EXCELLENT LONG-TERM STABILITY LOW VOLTAGE NOISE: 10nV/√Hz BIAS CURRENT: 3pA OFFSET VOLTAGE: 25µV (max) OFFSET DRIFT: 0.1µV/°C (max) GAIN BANDWIDTH: 18MHz QUIESCENT CURRENT: 800µA FAST OVERLOAD RECOVERY SUPPLY RANGE: 2.7V to 5.5V SINGLE AND DUAL VERSIONS MicroPACKAGE: DFN-8, MSOP-8
APPLICATIONS PRECISION I/V CONVERSION PHOTODIODE MONITORING OPTICAL AMPLIFIERS CAT-SCANNER FRONT-END PHOTO LAB EQUIPMENT
DESCRIPTIONThe OPA381 family of transimpedance amplifiers provides
18MHz of Gain Bandwidth (GBW), with extremely high
precision, excellent long-term stability, and very low 1/f noise.
The OPA381 features an offset voltage of 25µV (max), offset
drift of 0.1µV/°C (max), and bias current of 3pA. The OPA381
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 18MHz GBW of the OPA381 enables a trans-
impedance bandwidth of > 250kHz in most configurations.
The OPA381 is ideally suited for fast control loops for power
level measurement on an optical fiber.
As a result of the high precision and low-noise characteristics
of the OPA381, a dynamic range of 5 decades can be
achieved. This capability allows the measurement of signal
currents on the order of 10nA, and up to 1mA in a single I/V
conversion stage. In contrast to logarithmic amplifiers, the
OPA381 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 OPA381 and OPA2381 are both available in MSOP-8
and DFN-8 (3mm x 3mm) packages. They are specified
from –40°C to +125°C.
OPA381 RELATED DEVICES
OPA381 A2381 SBOS313B − AUGUST 2004 − REVISED NOVEMBER 2004
Precision, Low Power , 18MHz
Transimpedance Amplifier
