LT1028/LT1128 Ultra-Low Noise Precision Operational Amplifiers (Op Amps)

Linear Technology’s LT1028/LT1128 op amps for high end audio, infrared detectors, and hydrophone amplifiers

Image of Linear Technology's LT1028/LT1128 Operational AmplifiersLTC’s LT1028/LT1128 are ultra-low noise precision high speed op amps. The LT1028 has a gain of -1 stable whereas LT1128 has a gain of +1 stable. The gain-bandwidth product is 75 MHz for LT1028, 20 MHz for LT1128, distortion-free output, and true precision parameters (0.1 µV/°C drift, 10 µV offset voltage, 30 million voltage gain). Although the LT1028/LT1128 input stage operates at nearly 1 mA of collector current to achieve low voltage noise, input bias current is only 25 nA. These op amp’s voltage noise is less than the noise of a 50 Ω resistor. Therefore, even in very low source impedance transducer or audio amplifier applications, the LT1028/LT1128’s contribution to total system noise will be negligible. These op amps come in an 8-pin SOIC and PDIP package that have a temperature range of 0°C to +70°C. The LT1028/LT1128 are an excellent option for high end audio, infrared detectors, and hydrophone amplifiers.

Image of Linear Technology's Ultralow Noise Chart
  Image of Linear Technology's Voltage Noise vs Frequency Chart
Features
  • Gain bandwidth product: 28 MHz, 75 MHz
  • Voltage supply, single/dual: ±4 V to 18 V
  • Current supply: 7.6 mA
  • Temperature operating range: 0°C to +70°C
  • Package/case:  8-SOIC, PDIP
Applications
   
  • High quality audio
  • Low noise frequency synthesizers
  • Infrared detectors
  • 350 Ω bridge signal conditioning
 
  • Magnetic search coil amplifiers
  • Hydrophone amplifiers
  • Accelerometer and gyro amplifiers

LT1028 Op Amps

ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
LT1028CS8#PBF datasheet linkIC OPAMP GP 75MHZ 8SOLT1028CS8#PBFIC OPAMP GP 75MHZ 8SO2260 - Immediate
LT1028CS8#PBF product page link
LT1028CS8#TRPBF datasheet linkIC OPAMP GP 75MHZ 8SOLT1028CS8#TRPBFIC OPAMP GP 75MHZ 8SO2374 - Immediate
LT1028CS8#TRPBF product page link

LT1128 Op Amps

ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
LT1128CS8#PBF datasheet linkIC OPAMP GP 20MHZ 8SOLT1128CS8#PBFIC OPAMP GP 20MHZ 8SO840 - Immediate
LT1128CS8#PBF product page link
LT1128ACN8#PBF datasheet linkIC OPAMP GP 20MHZ 8DIPLT1128ACN8#PBFIC OPAMP GP 20MHZ 8DIP108 - Immediate
LT1128ACN8#PBF product page link
LT1128CN8#PBF datasheet linkIC OPAMP GP 20MHZ 8DIPLT1128CN8#PBFIC OPAMP GP 20MHZ 8DIP37 - Immediate
LT1128CN8#PBF product page link
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Published: 2018-01-11