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Texas Instruments TLV34xx Low Voltage Rail-to-Rail Output Op Amps

Texas Instruments TLV34xx Low Voltage Rail-to-Rail Output CMOS Operational Amplifiers (Op Amps) with low-power, low-voltage, and rail-to-rail output swing capabilities. The PMOS input stage offers an offset voltage of 0.3mV (typ.) and an ultra-low input bias current of 1pA (typ.). The A grade (TLV34xA) has a low offset voltage of 1.25mV (max.) at 25°C for applications requiring excellent DC precision. These single-supply amplifiers are designed specifically for ultra-low-voltage (1.5V to 5V) operation, with a common-mode input voltage range that typically extends from –0.2V to 0.5V from the positive supply rail.

The Texas Instruments TLV341 (single) and TLV342 (dual) in the X2QFN package offer a shutdown (SHDN) pin that can be used to disable the device. The supply current is reduced to 45pA (typical) in shutdown mode. The TLV341 is suitable for the most space-constrained applications, as it uses either the SOT-232 or smaller SC-70 packages. The dual TLV342 is offered in X2QFN, SOIC, and VSSOP packages. The TLV34xx is also suitable for various commercial and industrial applications using the extended industrial temperature range from -40°C to 125°C.

Features

  • 1.8V and 5V performance
  • Low offset (A Grade)
    • 1.25mV (max.) (25°C)
    • 1.7mV (max.) (-40°C to 125°C)
  • Rail-to-rail output swing
  • Wide common-mode input voltage range of –0.2V to (V+ –0.5V)
  • Input bias current of 1pA (typ.)
  • Input offset voltage of 0.3mV (typ.)
  • Low supply current of 70µA/channel
  • Low shutdown current of 10pA (typ.) per channel
  • Gain bandwidth of 2.3MHz (typ.)
  • 0.9V/µs (typ.) slew rate
  • 5µs (typ.) turnon time from shutdown
  • 20nV/√Hz input referred voltage noise (at 10kHz)
  • ESD protection exceeds JESD 22
    • 2000V human-body model (HBM)
    • 750V charged-device model (CDM)

Applications

  • Cellular phones
  • Consumer electronics (laptops)
  • Audio preamplifier for voice
  • Portable and battery-powered electronic equipment
  • Supply current monitoring
  • Battery monitoring
  • Buffers
  • Filters

Functional Block Diagram

Block Diagram - Texas Instruments TLV34xx Low Voltage Rail-to-Rail Output Op Amps
Opublikowano: 2025-01-15 | Zaktualizowano: 2025-01-24