TS12011/TS12012 Op Amps

By Touchstone Semiconductor 251

TS12011/TS12012 Op Amps

Touchstone's TS12011 and the TS12012 combine a 0.6 V reference, a 20 µs analog comparator, and a unity-gain stable operational amplifier in a single package. Both devices operate from a single 0.8 V to 2.5 V power supply, and consume less than 1.5 µA total supply current. Optimized for ultra-long life, single-cell and battery-powered applications, these devices expand Touchstone’s growing “NanoWatt Analog™“ high-performance analog integrated circuits portfolio.

Both the analog comparator and the op amp feature rail-to-rail input stages. The analog comparator exhibits ±7.5 mV of internal hysteresis for clean, chatter-free output switching. The TS12011 output stage is push-pull, where as the TS12012’s output stage is open-drain for mixed-voltage system applications. The internal reference to sinks or sources up to 0.1 µA load currents. When compared against similar products, the TS12011 and the TS12012 offer a factor-of-20 lower power consumption, and at least a 55% reduction in PCB area.

The TS12011 and the TS12012 are fully specified over the -40°C to 85°C temperature range, and each is available in a low profile, 10-pin 2 x 2 mm TDFN package with an exposed back-side paddle.

  • Internal 0.58 V reference
  • Op amp and comparator input ranges are rail-to-rail
  • Unity-gain stable op amp with AVCL = 104 dB
  • Op amp output: rail-to-rail and phase-reversal-free
  • Internal ±7.5 mV comparator hysteresis
  • 20 µs comparator propagation delay
  • Resettable latched comparator
  • TS12011: push-pull rail-to-rail output stage with crowbar-current free switching
  • TS12012: Open-drain output stage for Wired-OR or mixed-voltage system applications
  • Low-frequency, local-area alarms/detectors
  • Smoke detectors and safety sensors
  • Infrared receivers for remote controls
  • Instruments, terminals, and bar-code readers
  • Battery-powered systems
  • Smart-card readers