TLA202x Cost-Optimized, Ultra-Small, 12-Bit, System-Monitoring ADCs

1 Features

• Industry’s Lowest-Cost 12-Bit Delta-Sigma ADCs
• Ultra-Small X2QFN Package: 2 mm × 1.5 mm
• Highly Integrated:
  • 4 Single-Ended or 2 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

2 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

3 Description

The TLA2021, TLA2022, and TLA2024 devices (TLA202x) are easy-to-use, low-power, 12-bit delta-sigma (ΔΣ) analog-to-digital converters (ADCs) targeted for any type of system-monitoring applications (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 of these features, along with a wide operating supply voltage range, make the TLA202x suitable for power- and space-constrained, system-monitoring applications.

1. For all available packages, see the orderable addendum at the end of the data sheet.

System-Monitoring Application Example

4 Revision History

5 Device Comparison Table

6 Pin Configuration and Functions