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TLA2021IRUGR

TITLA2021IRUGR

Texas Instruments
12 Bit Analog to Digital Converter 1 Input 1 Sigma-Delta 10-X2QFN (2x1.5)
NRND12,887 in stock
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Overview

The TLA2021IRUGR is a cost-optimized, 12-bit delta-sigma analog-to-digital converter (ADC) featuring an integrated oscillator and voltage reference. Designed for system monitoring, it supports both single-ended and differential inputs and communicates over a standard I2C interface with four selectable addresses. Its extremely low power consumption and small X2QFN footprint make it ideal for space-constrained and battery-operated applications.

Why Choose This Part

The device consumes only 150uA during active conversion and features a 0.5uA power-down mode, significantly extending battery life. Its integrated voltage reference and oscillator reduce external component count and PCB area. The selectable I2C addressing allows multiple ADCs to reside on the same bus without conflict.

Applications

Supply Voltage Monitoring
Precisely monitoring battery levels or rail voltages in consumer electronics and portable equipment.
Current Sensing
Measuring voltage drops across shunt resistors for power management and overcurrent protection.
Temperature Measurement
Interfacing with thermistors or other analog temperature sensors to provide digitized thermal data.
Portable Instrumentation
Integrating into handheld devices where high-resolution sensing is needed at minimal current draw.

Key Specifications

Features Selectable Address
Input Type Differential, Single Ended
Architecture Sigma-Delta
Configuration ADC
Mounting Type Surface Mount
Data Interface I2C
Number of Bits 12
Package / Case 10-XFQFN
Reference Type Internal
Ratio - S/H:ADC 0:1
Number of Inputs 1
Operating Temperature -40degC ~ 85degC
Supplier Device Package 10-X2QFN (2x1.5)
Number of A/D Converters 1
Voltage - Supply, Analog 2V ~ 5.5V
Voltage - Supply, Digital 2V ~ 5.5V
Sampling Rate (Per Second) 3.3k

Getting Started

To evaluate this ADC, engineers can use the TLA2021EVM evaluation module which connects to the PAMB motherboard for PC-based analysis. Software implementation involves configuring the internal registers via I2C to select between continuous or single-shot conversion modes. Ensure the analog input range stays within the VDD supply voltage (2V to 5.5V) to maintain accuracy.

Categories

Interface ICs > ADC & DAC