5.5 MHz, High Slew Rate, Low-Noise, Low-power, RRO Precision JFET Operational Amplifier - OPA145

OPA145 (ACTIVE)

5.5 MHz, High Slew Rate, Low-Noise, Low-power, RRO Precision JFET Operational Amplifier

 

Description

The OPA145, OPA2145, and OPA4145 operational amplifier (op amp) family is a series of low-power JFET input amplifiers that feature excellent drift, low current noise, and pico-ampere input bias current, making these devices a suitable choice for amplifying small signals from high-impedance sensors. The rail-to-rail output swing interfaces to modern, single-supply, precision analog-to-digital converters (ADCs) and digital-to-analog converters (DACs). In addition, the input range that includes V– allows designers to simplify power management and take advantage of the single-supply, low-noise JFET architecture.

Features

  • Best Bandwidth and Slew-Rate-to-Power Ratio:
    • Gain-Bandwidth Product: 5.5 MHz
    • Slew Rate: 20 V/µs
    • Low Supply Current: 475 µA (maximum)
  • High Precision:
    • Very Low Offset: 150 µV (maximum)
    • Very Low Offset Drift: 1 µV/°C (maximum)
  • Low Input Bias Current: 2 pA
  • Excellent Noise Performance:
    • Very Low Voltage Noise: 7 nV/√Hz
    • Very Low Current Noise: 0.8 fA/√Hz
  • Input-Voltage Range Includes V– Supply
  • Single-Supply Operation: 4.5 V to 36 V
  • Dual-Supply Operation: ±2.25 V to ±18 V

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Parametrics Compare all products in Precision Op Amps

 
Number of Channels (#)
Total Supply Voltage (Min) (+5V=5, +/-5V=10)
Total Supply Voltage (Max) (+5V=5, +/-5V=10)
GBW (Typ) (MHz)
Slew Rate (Typ) (V/us)
Rail-to-Rail
Vos (Offset Voltage @ 25C) (Max) (mV)
Offset Drift (Typ) (uV/C)
Iq per channel (Typ) (mA)
Vn at 1kHz (Typ) (nV/rtHz)
CMRR (Typ) (dB)
Rating
Operating Temperature Range (C)
Package Group
Package Size: mm2:W x L (PKG)
Input Bias Current (Max) (pA)
Output Current (Typ) (mA)
Additional Features
Architecture
OPA145 OPA140 OPA141
1    1    1   
4.5    4.5    4.5   
36    36    36   
5.5    11    10   
20    20    20   
In to V-
Out   
In to V-
Out   
In to V-
Out   
0.15    0.12    3.5   
0.4    0.35    2   
0.445    1.8    1.8   
7    5.1    6.5   
140    140    126   
Catalog    Catalog    Catalog   
-40 to 125    -40 to 125    -40 to 125   
SOIC    SOIC
SOT-23
VSSOP   
SOIC
VSSOP   
8SOIC: 29 mm2: 6 x 4.9(SOIC)    8SOIC: 29 mm2: 6 x 4.9(SOIC)
5SOT-23: 8 mm2: 2.8 x 2.9(SOT-23)
8VSSOP: 15 mm2: 4.9 x 3(VSSOP)   
8SOIC: 29 mm2: 6 x 4.9(SOIC)
8VSSOP: 15 mm2: 4.9 x 3(VSSOP)   
10    10    20   
20    30    30   
N/A    N/A    N/A   
FET    FET    FET   

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