Semtech Corporation SX8723E083TRT

Overview

SX8723E083TRT from Semtech is a low-power, 16-bit ZoomingADC™ analog front-end IC designed for direct interfacing with miniature pressure and temperature sensors in industrial sensing systems. It features 2 differential (or 4 single-ended) analog inputs, programmable gain from 1/12 to 1000, internal 1.22 V bandgap reference, 2-wire interface, and two digital outputs for sensor biasing or reset control.

For engineers reviewing the SX8723E083TRT datasheet, pinout, applications, or equivalent options, key selection criteria include differential input range scalability, resolution–speed–power trade-off configurability, on-chip offset compensation up to ±15× full-scale, and operation across –40°C to +125°C industrial temperature range.

Technical Context

The SX8723E083TRT implements a switched-capacitor ZoomingADC™ architecture with three cascaded programmable gain amplifiers (PGA1–PGA3), enabling adaptive signal conditioning before oversampling ADC conversion. Its acquisition chain supports OSR from 8 to 1024 and NELCONV of 1/2/4/8, yielding configurable resolution from 6 to 16 bits.

It integrates an internal RC oscillator (4 MHz nominal), charge pump (VPUMP) for analog switch drive when VBATT < 3 V, GPIO-configurable D0/D1 pins for VREF monitoring or external reference input, and READY flag signaling end-of-conversion with timing synchronized to ADC sampling rate (e.g., 1/250 kHz = 4 µs pulse width).

Key Specifications

Pinout & Package

Package: MLPD-W-12 (4 mm × 4 mm, wettable flank, 12-pin leadless package with exposed thermal pad). Pin 13 is internal VSS connection to bottom ground pad - must be soldered to PCB ground plane for thermal and noise performance.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar analog front-end ADC applications.

Compared with ADS1118IRUGT and MAX11206ETL+, the SX8723E083TRT uniquely combines 16-bit resolution, integrated sensor bias outputs, on-chip offset compensation, and sub-300 µA active current - making it optimal for compact, battery-operated industrial sensor nodes where analog front-end integration reduces BOM count and calibration overhead.

Availability

SX8723E083TRT is available at Aetrix Electronics and suitable for industrial pressure sensing, barometric altitude measurement, and electronic compass calibration requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for SX8723E083TRT 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

Semtech Corporation is a U.S.-based fabless semiconductor company specializing in high-performance analog and mixed-signal ICs for sensing, connectivity, and power management.

The SX8723E083TRT belongs to Semtech's ZoomingADC™ family - engineered specifically for ultra-low-power, high-accuracy sensor signal acquisition in industrial and environmental monitoring applications where minimal external components and robust temperature performance are critical.

FAQ

What is the maximum differential input voltage range supported by the SX8723E083TRT at 16-bit resolution?

The SX8723E083TRT supports a maximum differential input voltage range of ±2.42 mV at gain = 1000 and OSR = 32, which corresponds to its full-scale range in high-resolution, low-noise configurations. At lower gains (e.g., gain = 1), the range expands to ±2.42 V. These ranges are defined by the relation VIN,MAX = ±(VREF,ADC/2) × (OSR/(OSR+1)), with VREF,ADC internally set to 1.22 V. The SX8723E083TRT maintains specified INL and DNL performance across these ranges when operated within datasheet conditions.

Does the SX8723E083TRT require an external crystal or clock source?

No, the SX8723E083TRT does not require an external crystal or clock source. It integrates a factory-trimmed 4 MHz RC oscillator that serves as the internal time base for ADC sampling, PGA settling, and 2-wire interface timing. This eliminates BOM cost and layout area associated with external timing components while maintaining sufficient accuracy for industrial sensor applications - confirmed by timing specifications in the datasheet's "Timing Characteristics" section.

How does the SX8723E083TRT handle sensor offset compensation?

The SX8723E083TRT provides dedicated offset compensation through PGA2 and PGA3 stages, with programmable offset settings of ±1 V/V (PGA2, step = 0.2 V/V) and ±5.25 V/V (PGA3, step = 1/12 V/V). This allows cancellation of sensor zero-point drift up to ±15× full-scale input signal, as stated in the device description. Compensation is applied digitally via register writes (GDoff2/GDoff3), and the SX8723E083TRT guarantees ±0.5% offset setting precision and ±5 ppm/°C temperature stability.

Can the SX8723E083TRT operate from a 2.4 V supply?

Yes, the SX8723E083TRT is fully specified to operate from 2.4 V to 5.5 V VBATT. However, its internal 1.22 V bandgap reference voltage may deviate by up to 50 mV below 3 V, and the VPUMP charge pump activates automatically when VBATT drops below 3 V to maintain analog switch functionality. All electrical characteristics - including 16-bit performance, INL, and power consumption - are validated down to 2.4 V, as shown in the "Electrical Characteristics" table.

What is the function of the READY pin on the SX8723E083TRT?

The READY pin on the SX8723E083TRT is an active-low digital output that pulses low for exactly one cycle of the ADC sampling frequency (e.g., 4 µs at 250 kHz) to signal end-of-conversion. It can be used as an interrupt source for microcontrollers or to synchronize external sensor excitation timing. Unlike a level-held status flag, the READY pulse is edge-triggered and self-clearing, eliminating the need for register polling - a feature explicitly documented in the "Timing Characteristics" section of the SX8723E083TRT datasheet.