OPA2380 High Speed Precision Transimpedance Amplifier | TI.com

OPA2380 (ACTIVE)

High Speed Precision Transimpedance Amplifier

High Speed Precision Transimpedance Amplifier - OPA2380
Datasheet
 

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 25µV, offset drift of 0.1µV/°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 4 to 5 decades can be achieved. For example, this capability allows the measurement of signal currents on the order of 1nA, and up to 100µA 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 pull-down 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 -40°C to +125°C.

Features

  • > 1MHz TRANSIMPEDANCE BANDWIDTH
  • EXCELLENT LONG-TERM VOS STABILITY
  • BIAS CURRENT: 50pA (max)
  • OFFSET VOLTAGE: 25µV (max)
  • DYNAMIC RANGE: 4 to 5 Decades
  • DRIFT: 0.1µV/°C (max)
  • GAIN BANDWIDTH: 90MHz
  • QUIESCENT CURRENT: 7.5mA
  • SUPPLY RANGE: 2.7V to 5.5V
  • SINGLE AND DUAL VERSIONS
  • MicroSIZE PACKAGE: MSOP-8
  • APPLICATIONS
    • PHOTODIODE MONITORING
    • PRECISION I/V CONVERSION
    • OPTICAL AMPLIFIERS
    • CAT-SCANNER FRONT-END

All trademarks are the property of their respective owners.

Parametrics

Compare all products in High-speed op amps (GBW>=50MHz) Email Download to Excel
Part number Order Architecture Number of channels (#) Total supply voltage (Min) (+5V=5, +/-5V=10) Total supply voltage (Max) (+5V=5, +/-5V=10) BW @ Acl (MHz) Acl, min spec gain (V/V) Slew rate (Typ) (V/us) Vn at flatband (Typ) (nV/rtHz) Vn at 1 kHz (Typ) (nV/rtHz) Iq per channel (Typ) (mA) Vos (offset voltage @ 25 C) (Max) (mV) Rail-to-rail Features Rating Operating temperature range (C) Package Group Package size: mm2:W x L (PKG) CMRR (Typ) (dB) Input bias current (Max) (pA) Offset drift (Typ) (uV/C) GBW (Typ) (MHz) Output current (Typ) (mA) 2nd harmonic (dBc) 3rd harmonic (dBc) @ MHz
OPA2380 Order now Voltage FB     2     2.7     5.5     90     1     80     5.8     150     7.5     0.025     In to V-
Out    
   
Catalog     -40 to 125     VSSOP | 8     8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)     105     50     0.03     90     150          
OPA380 Order now Voltage FB     1     2.7     5.5     90     1     80     5     150     7.5     25     In to V-    
   
Catalog     -40 to 125     SOIC | 8
VSSOP | 8    
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)
8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)    
110     50     0.03     90     75     81     93     1