Texas Instruments OPA835 & OPA836 Ultra Low-Power Op-Amps

Texas Instruments OPA835 and OPA836 Ultra Low-Power Op-Amps feature single ultra-low power, rail-to-rail output, and negative rail input. These voltage-feedback operational amplifiers are designed to operate over a power supply of 2.5V to 5.5V. The TI OPA835 consumes only 250µA per channel and a unity gain bandwidth of 56MHz while the OPA836 consumes only 1mA per channel and a unity gain bandwidth of 205MHz. These TI op-amps provide an industry-leading power-to-performance ratio for rail-to-rail amplifiers. The high-frequency performance and low-power consumption provide performance versus power not attainable in comparable devices. That performance, coupled with a power savings mode to reduce the current to <1.5µA, makes these TI devices an attractive solution for high-frequency amplifiers in battery-powered applications.

Features

  • OPA835
    • Ultra-low power
    • 2.5V to 5.5V supply voltage
    • 250µA (typ) quiescent current
    • 0.5µA (typ) power-down mode
    • 56MHz bandwidth
    • 160V/µs slew rate
    • 10ns (2 VSTEP) rise time
    • 45ns (2 VSTEP) setting time
    • 195ns overdrive recovery time
    • 9.3nV/rtHz (f = 100kHz) input voltage noise
    • 100µV (500µV max.) input offset voltage
    • 113dB CMRR
    • 40mA output current drive
    • Rail-to-rail output (RRO)
    • -0.2V to 3.9V (5V supply) input voltage range
    • -0°C to +125°C operating temperature range
  • OPA836
    • Low power
    • 2.5V to 5.5V supply voltage
    • 1mA (typ.) quiescent current
    • 0.5µA (typ.) power-down mode
    • 205MHz bandwidth
    • 60V/µs slew rate
    • 3ns (2 VSTEP) rise time
    • 22ns (2 VSTEP) setting time
    • 60ns overdrive recovery time
    • 4.6nV/rtHz (f = 100kHz) input voltage noise
    • 65µV (400µV max.) input offset voltage
    • 116dB CMRR
    • 50mA output current drive
    • Rail-to-rail output (RRO)
    • -0.2V to 3.9V (5V supply) input voltage range
    • -40°C to +125°C operating temperature range

Applications

  • Low-power signal conditioning
  • Audio ADC input buffer
  • Low-power SAR and ΔΣ ADC drivers
  • Portable systems
  • Low-power systems
Đã phát hành: 2011-12-19 | Đã cập nhật: 2022-03-11