TLA202x 12-Bit, 1-Channel, Delta-Sigma (ΔΣ) ADCs

By Texas Instruments 38

TLA202x 12-Bit, 1-Channel, Delta-Sigma (ΔΣ) ADCs

Texas Instruments' TLA2021, TLA2022, and TLA2024 devices (TLA202x) are easy-to-use, low-power, 12-bit ΔΣ analog-to-digital converters (ADCs). Targeted applications include system-monitoring (such as supply or battery voltage supervision, current sensing, or temperature measurements). Offered in an ultra-small, leadless, 10-pin X2QFN package, the TLA2021 and TLA2022 are single-channel ADCs while the TLA2024 features a flexible input multiplexer (MUX) with two differential or four single-ended input measurement options.

The TLA202x integrate a voltage reference and oscillator. Additionally, the TLA2022 and TLA2024 include a programmable gain amplifier (PGA) with selectable input ranges from ±256 mV to ±6.144 V, enabling both large- and small-signal measurements.

The TLA202x communicate via an I2C-compatible interface and operate in either continuous or single-shot conversion mode. The devices automatically power down after one conversion in single-shot conversion mode, significantly reducing power consumption during idle periods.

All these features, along with a wide operating supply voltage range, make the TLA202x suitable for power- and space-constrained, system-monitoring applications.

Features
  • 12-bit ΔΣ ADCs
  • Ultra-small X2QFN package: 2 mm x 1.5 mm
  • Highly integrated:
    • Four single-ended or two differential inputs make the TLA2024 the industry’s highest channel density ADC (0.75 mm² per channel)
    • PGA (TLA2022 and TLA2024 only)
    • Voltage reference
    • Oscillator
  • Low current consumption: 150 µA
  • Wide supply range: 2 V to 5.5 V
  • Programmable data rate: 128 SPS to 3.3 kSPS
  • I2C compatible interface:
    • Supports standard-mode and fast-mode
    • Three pin-selectable I2C addresses
  • Operating temperature range: -40°C to +85°C
Applications
  • Personal electronics:
    • TVs, tablets, cell phones
    • Wearables
    • Drones, toys
  • Home and kitchen appliances
  • Building automation:
    • HVACs, smoke detectors
  • Battery voltage and current monitoring
  • Temperature sensing
  • Battery-powered, portable instrumentation

Categories

Top