The LTA8291, LTA8292 and LTA8294 (LTA829x) are a family of low power, 48 V wide supply voltage,low noise, rail-to-rail output operational amplifiers capable of operating on supplies ranging from+4.5 V (±2.25 V) to +48 V (±24 V). This new generation of high-voltage CMOS operational amplifiers,in conjunction with the LTA828x, LTA827x and LTA826x, provide a family of bandwidth, noise, and power options to meet the needs of a wide variety of applications. The LTA829x devices offer outstanding dc precision and ac performance, including low offset (±1.8 mV maximum), low offset drift (±2 μV/°C typically), 22 MHz bandwidth, and 4 nV/√Hz input voltage noise density at 10 kHz.Unique features such as differential input-voltage range to the negative supply rail, high output current (±45 mA), high capacitive load drive of up to 1 nF, and high slew rate (20 V/μs) make the LTA829x high-performance operational amplifiers for high-voltage industrial applications.The robust design of the LTA829x family provides ease-of-use to the circuit designer: integrated
RF/EMI rejection filter, no phase reversal in overdrive conditions, and high electro-static discharge (ESD) protection. The LTA829x are optimized for operation at voltages from +4.5 V (±2.25 V) to +48V (±24 V) over the extended temperature range of −40 °C to +125 °C.

Advantages And Characteristics

  •  Wide Supply: ±2.25 V to ±24 V, 4.5 V to 48 V
  •  Wide Bandwidth: 22 MHz GBW
  •  High Slew Rate: 20 V/μs
  •  Low Noise: 4 nV/√Hz at 10 kHz
  •  Low Offset Voltage: ±1.8 mV Maximum
  •  Low Offset Voltage Drift: ±2 μV/°C
  •  High Common-Mode Rejection: 115 dB
  •  Low Bias Current: ±10 pA
  •  EMI/RFI Filtered Inputs


  •  High-Side and Low-Side Current Sensing
  •  Audio Preamplifier
  •  High Precision Comparator
  •  Multiplexed Data-Acquisition Systems
  •  High-Resolution ADC Driver Amplifiers
  •  SAR ADC Reference Buffers
  •  Test and Measurement Equipment
  •  Programmable Logic Controllers
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