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

OPA145 (ACTIVE)

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

 

Description

The OPA145 operational amplifier (op amp) is a low-power JFET input amplifier that has excellent drift, low current noise, and pico-ampere input bias current, making this device 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 (Vos<1mV)

 
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 @ 25 C) (Max) (mV)
Offset drift (Typ) (uV/C)
Iq per channel (Typ) (mA)
Vn at 1 kHz (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)
Features
Architecture
OPA145 OPA131 OPA132 OPA141
1     1     1     1    
4.5     9     5     4.5    
36     36     36     36    
5.5     4     8     10    
20     10     20     20    
In to V-
Out    
In
Out    
No     In to V-
Out    
0.15     0.75     0.5     3.5    
0.4     2     2     2    
0.445     1.5     4     1.8    
7     15     8     6.5    
140     80     100     126    
Catalog     Catalog     Catalog     Catalog    
-40 to 125     -55 to 125     -40 to 125     -40 to 125    
SOIC | 8
SOT-23 | 5
VSSOP | 8    
SOIC | 8     SOIC | 8     SOIC | 8
VSSOP | 8    
8SOIC: 29 mm2: 6 x 4.9 (SOIC | 8)
5SOT-23: 8 mm2: 2.8 x 2.9 (SOT-23 | 5)
8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)    
8SOIC: 29 mm2: 6 x 4.9 (SOIC | 8)     8SOIC: 29 mm2: 6 x 4.9 (SOIC | 8)     8SOIC: 29 mm2: 6 x 4.9 (SOIC | 8)
8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)    
10     50     50     20    
20     25     40     30    
N/A     N/A     N/A     N/A    
FET     FET     FET     FET