TLA2021
12-Bit 1-Ch Delta-Sigma ADC w/ Voltage Reference, Oscillator, and I2C for Low-Cost Applications
TLA2021
- 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
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.
Technical documentation
Type | Title | Date | ||
---|---|---|---|---|
* | Data sheet | TLA202x Cost-Optimized, Ultra-Small, 12-Bit, System-Monitoring ADCs datasheet | PDF | HTML | 17 Nov 2017 |
Application note | Calculating Conversion Latency and System Cycle Time for Delta-Sigma ADCs (Rev. A) | PDF | HTML | 18 Mar 2024 | |
Application note | QFN and SON PCB Attachment (Rev. C) | PDF | HTML | 06 Dec 2023 | |
Application note | Digital Filter Types in Delta-Sigma ADCs (Rev. A) | PDF | HTML | 29 Mar 2023 | |
Application note | Low-Side Current Shunt Op-Amp Circuit to 3-V Single-Ended ADC for Cost-Optimized (Rev. A) | 29 Sep 2021 | ||
E-book | Fundamentals of Precision ADC Noise Analysis | 19 Jun 2020 | ||
Analog Design Journal | How delta-sigma ADCs work, Part 1 (Rev. A) | 19 Sep 2016 | ||
Analog Design Journal | How delta-sigma ADCs work, Part 2 | 09 Nov 2011 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
ANALOG-ENGINEER-CALC — Analog engineer's calculator
PSPICE-FOR-TI — PSpice® for TI design and simulation tool
TINA-TI — SPICE-based analog simulation program
Package | Pins | CAD symbols, footprints & 3D models |
---|---|---|
X2QFN (RUG) | 10 | Ultra Librarian |
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