AIoT Precision Logger - Precision Measurement Meets Embedded Intelligence and IoT

AIoT Precision Logger Analog Measurement Features:
--> 32 bit high accuracy Sigma Delta ADC with optional secondary 24-bit ADC
--> Built-in multiplexer that automates routing the ADC to any 10 single ended or 5 differential channels
--> Bipolar measurement range: +2.5V to -2.5V
--> Programmable gain amplifier (PGA) with gain settings up to 32×
--> Built-in low-drift 2.5V reference, with option to add a 2.048V ultra-low drift reference (±0.04%)
--> Two precision current sources for performing accurate resistance measurements
--> Integrated temperature sensor for cold-junction or ambient compensation

Summary of ESP32-S3 Features:
--> Xtensa® 32-bit LX7 dual-core processor that operates at up to 240 MHz
--> 2.4 GHz Wi-Fi (802.11 b/g/n), Bluetooth Classic + BLE 5.4, and the ESP-NOW protocol for creating small low power mesh networks
--> MCU supports vector instructions, which provides acceleration for neural network computing and signal processing workloads. Compatible with ESP-CLAW edge AI agent framework
--> Peripherals: GPIOs, SPI, I2S, I2C, PWM, RMT, ADC, DAC and UART, SD/MMC host and TWAI™
--> Deep and light sleep low power modes with real time clock (RTC) timing control

Link for ESPRESSIF's ESP32-S3 product page: https://www.espressif.com/en/products/socs/esp32-s3/

Power, programming, connection / communication interfaces:
--> USB C connection interface serves as a way to power the IoT Precision Logger and program the ESP32-S3 without the need for an external programmer.
--> The USB C interface also support UART communication with the ESP32-S3 for debugging.
--> Features a 2.54mm (0.1") pin header to access the ESP32-S3 GPIO pins, 3.3V bus, and Vin (5V)
--> Includes a QWIIC connector with 3.3V power and I2C communication to easily interface with Sparkfun and Adafruit sensor boards
--> Analog measurement channels using a barrier block screw terminal interface for flexible and reliable analog measurement connections
--> Access to voltage reference outputs to support external sensor conditioning circuits like Wheatstone Bridges

See the AIoT Precision Logger getting started page for a detailed descriptions on pins and features.

Resolution: 32-bit ΔΣ ADC with up to 26.9 ENOB

Maximum Sample Rate: 38.4 kSPS with a maximum bandwidth of 7.74 kHz

Programmable Gain Amplifier (PGA): Gain settings of 1, 2, 4, 8, 16, 32. PGA can also be bypassed.

Main ADC high-accuracy architecture:
– Offset drift: 1 nV/°C
– Gain drift: 0.5 ppm/°C
– Noise: 7 nVRMS (2.5 SPS, gain = 32)
– Linearity: 3 ppm

Voltage measurement range: +/- 2.5V with over voltage protection on input pins up to +/- 10V

Example Current and Power Draw:
When using Bluetooth, ADC, QWIIC Sensor, and LED: 110mA and 500mW
--> With ADC and analog power rails shutdown and ESP32 active: < 40mA and < 200mW

Input analog pins can be configured as up to 8 general-purpose digital inputs/outputs

Digital Filter Options: Sinc1, Sinc2, Sinc3, Sinc4, Sinc5, and a finite impulse response (FIR) filter

SPI Interface: Supports clock speeds up to 10 MHz

Precision Current Sources (IDAC1 and IDAC2) with 10 selectable output ranges: 50 μA to 3 mA

Optional Second 24-bit ΔΣ ADC that
==> It can be routed to any input.
==> Max sample rate 800 SPS
==> built-in PGA with gains settings: 1, 2, 4 ,8, 16, 32, 64, and 128

Optional Voltage Reference: using ADR4520ARZ
==>Output Voltage: 2.048 V, Initial Accuracy: ±0.04%, ==>Temperature Coefficient: 2 ppm/°C (typical)
==>Output Drive Capability: Up to 10 mA
==>Includes two position DIP switch so user can connect and disconnect voltage reference
==>Can be accessed externally to bias sensors or external amplifiers

For detailed specifications on the ESP32-S3 refer to its product page: https://www.espressif.com/en/products/socs/esp32-s3/

Discount for large orders
5% discount for quantities of 10 or above, automatically applied at checkout. Contact Anabit for bulk pricing on quantities of 50 or more.