Texas Instruments TLA2022IRUGR

Overview

TLA2022IRUGR from Texas Instruments is a single-channel, 12-bit delta-sigma analog-to-digital converter (ADC) with integrated programmable gain amplifier (PGA), voltage reference, and oscillator. It supports ±0.256 V to ±6.144 V input ranges, operates from 2 V to 5.5 V, consumes 150 µA in active mode, and communicates via I²C interface with three selectable slave addresses. It is used for precision system monitoring in battery-powered portable instrumentation.

For engineers reviewing the TLA2022IRUGR datasheet, TLA2022IRUGR pinout, TLA2022IRUGR application, or TLA2022IRUGR equivalent, key selection considerations include its single-ended/differential input capability, PGA-configurable full-scale range, ultra-small 2 mm × 1.5 mm X2QFN package, low-power single-shot conversion mode, and I²C timing compliance up to 400 kHz.

Technical Context

The TLA2022IRUGR implements a delta-sigma ADC core with internal 1-MHz oscillator divided to 250-kHz modulator frequency, enabling high noise rejection and stable 12-bit conversions. Its integrated PGA provides six selectable gain settings (1× to 16×), directly scaling input voltage ranges without external components.

Conversion modes are software-selectable: continuous-conversion at 128–3300 SPS or single-shot mode with automatic power-down after conversion. The I²C interface supports standard- and fast-mode protocols, with ADDR pin selecting among three slave addresses (0x48, 0x49, 0x4B), and built-in ESD protection rated at ±2000 V HBM.

Key Specifications

Pinout & Package

TLA2022IRUGR is housed in a 10-pin, 2 mm × 1.5 mm X2QFN package with wettable flanks, optimized for space-constrained PCB layouts and automated optical inspection (AOI).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar system-monitoring ADC applications.

Compared with ADS1115IDGSR and TLA2021IRUGR, the TLA2022IRUGR uniquely balances single-channel precision, PGA adaptability, and ultra-low power in the smallest footprint - making it optimal for cost-sensitive, space-constrained, battery-operated system monitors requiring variable input scaling.

Availability

TLA2022IRUGR is available at Aetrix Electronics and suitable for battery voltage monitoring, current sensing, temperature sensing, and system power supply monitoring requiring stable component supply across production lifecycles.

Supply support for TLA2022IRUGR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor company focused on analog and embedded processing technologies, serving industrial, automotive, and personal electronics markets with high-reliability, production-ready ICs.

The TLA202x product line was designed specifically for cost-optimized, ultra-small, system-level monitoring in space- and power-constrained applications - delivering integrated signal conditioning without compromising 12-bit accuracy or I²C interoperability.

FAQ

What is the maximum input voltage range supported by the TLA2022IRUGR?

The TLA2022IRUGR supports a programmable full-scale range from ±0.256 V to ±6.144 V via its integrated PGA. This is achieved using PGA[2:0] bits in the configuration register. At ±6.144 V FSR, the device can measure signals up to the supply rail (e.g., 3.3 V or 5 V) without clipping, provided the absolute input voltage remains within GND – 0.3 V to VDD + 0.3 V per absolute maximum ratings. The TLA2022IRUGR does not support external reference or overvoltage beyond these limits.

Does the TLA2022IRUGR require an external crystal or clock source?

No, the TLA2022IRUGR does not require an external crystal or clock source. It integrates a 1-MHz internal oscillator that is divided down to generate the 250-kHz modulator clock. This oscillator is factory-trimmed and drifts with temperature, contributing to the specified 10 ppm/°C gain drift. External clock injection is not supported, and the TLA2022IRUGR cannot be synchronized to an external timing source.

How many I²C addresses does the TLA2022IRUGR support, and how are they selected?

The TLA2022IRUGR supports three I²C slave addresses: 0x48, 0x49, and 0x4B. These are selected by connecting the ADDR pin to GND (0x48), VDD (0x49), or SCL (0x4B). The address is latched at the start of each I²C transaction, allowing dynamic reconfiguration if needed. No external resistors or configuration registers are required - selection is purely hardware-based and deterministic.

Can the TLA2022IRUGR perform differential measurements?

Yes, the TLA2022IRUGR supports true differential measurements between AIN0 (positive) and AIN1 (negative) inputs. In differential mode, the ADC digitizes the voltage difference (V_AIN0 – V_AIN1) with common-mode rejection >90 dB. For single-ended operation, AIN1 must be externally tied to GND. Unlike the TLA2024, the TLA2022IRUGR does not include an input multiplexer - it supports only this one differential or single-ended channel pair.

What is the typical power consumption of the TLA2022IRUGR in single-shot mode?

In single-shot mode, the TLA2022IRUGR draws 150 µA during active conversion and automatically enters power-down mode consuming only 0.5 µA afterward. Wake-up time from power-down to conversion start is approximately 25 µs. Total energy per conversion depends on data rate - e.g., at 128 SPS, average current drops to ~1.2 µA, enabling multi-year operation on a CR2032 coin cell in periodic monitoring applications.