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

OPA145
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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) Email Download to Excel
Part number Order 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 Order now 1     4.5     36     5.5     20     In to V-
Out    
0.15     0.4     0.445     7     140     Catalog     -40 to 125     SOIC | 8
SOT-23 | 5
VSSOP | 8    
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)
5SOT-23: 5 mm2: 1.6 x 2.9 (SOT-23 | 5)
8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)    
10     20         FET    
OPA131 Order now 1     9     36     4     10     In
Out    
0.75     2     1.5     15     80     Catalog     -55 to 125     SOIC | 8     8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)     50     25         FET    
OPA132 Order now 1     5     36     8     20     No     0.5     2     4     8     100     Catalog     -40 to 125     SOIC | 8     8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)     50     40         FET    
OPA141 Order now 1     4.5     36     10     20     In to V-
Out    
3.5     2     1.8     6.5     126     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)    
20     30         FET