Texas Instruments ADS114S06IRHBT

Overview

ADS114S06IRHBT from Texas Instruments is a 16-bit delta-sigma analog-to-digital converter with integrated programmable gain amplifier (PGA), 6-channel analog multiplexer, dual matched excitation current sources (10–2000 µA), internal 2.5-V reference (10 ppm/°C max drift), and 4.096-MHz oscillator. It delivers 280 µA typical supply current at 4 kSPS and supports industrial temperature range (–50°C to +125°C) for precision sensor signal conditioning in RTD, thermocouple, and bridge-based systems.

For engineers reviewing the ADS114S06IRHBT datasheet, ADS114S06IRHBT pinout, ADS114S06IRHBT application, or ADS114S06IRHBT equivalent, key selection criteria include its 6-input MUX configuration (vs. 12-input ADS114S08), rail-to-rail input capability with PGA gains up to 128, simultaneous 50/60-Hz rejection at ≤20 SPS, and four GPIOs supporting system-level monitoring and control in space-constrained industrial modules.

Technical Context

The ADS114S06IRHBT implements a low-latency sinc3 digital filter with configurable data rates from 2.5 SPS to 4 kSPS and supports both internal and external clocking. Its PGA provides eight discrete gain settings (1, 2, 4, 8, 16, 32, 64, 128) with offset drift as low as ±10 nV/°C when global chop is enabled.

It integrates fault detection circuits including PGA rail detection (±0.15 V from AVDD/AVSS), reference voltage monitoring (three thresholds), burnout current sources (0.2–10 µA), and supply monitors (±1% accuracy). The device uses SPI-compatible serial interface with optional CRC and supports self-calibration and system calibration routines.

Key Specifications

Pinout & Package

The ADS114S06IRHBT is housed in a 5.0 mm × 5.0 mm, 32-pin VQFN package (RHB) with exposed thermal pad connected to AVSS. Pin functions are defined per TI SBAS815A Rev A, and unused pins (e.g., AIN6–AIN11, REFP1/REFN1) are not bonded on this 6-input variant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar precision delta-sigma ADC applications.

Compared with ADS114S08IRHBT and AD7124-4BCPZ, the ADS114S06IRHBT offers optimal balance of integration (PGA + IDACs + reference + GPIOs), 6-channel flexibility, and ultra-low power in harsh environments-making it ideal for cost-sensitive, space-constrained industrial transmitters where diagnostic completeness matters more than raw resolution.

Availability

ADS114S06IRHBT is available at Aetrix Electronics and suitable for RTD temperature transmitters, PLC analog input modules, and climate chamber controllers requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for ADS114S06IRHBT 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 leader specializing in analog and embedded processing technologies, with decades of expertise in precision data converters and industrial-grade ICs.

The ADS114S0x product line was designed specifically for high-integration, low-power industrial sensor signal chains-targeting applications where board space, power budget, and diagnostic reliability constrain traditional discrete ADC solutions.

FAQ

What is the maximum data rate supported by the ADS114S06IRHBT?

The ADS114S06IRHBT supports a maximum data rate of 4 kSPS in conversion mode. This rate is achievable with the low-latency digital filter and internal 4.096-MHz oscillator. At higher data rates, the device maintains 16-bit no-missing-codes performance while delivering 88–105 dB normal-mode rejection at 50/60 Hz when configured appropriately. The ADS114S06IRHBT's timing characteristics are fully specified in TI SBAS815A Rev A.

Does the ADS114S06IRHBT include an internal voltage reference?

Yes, the ADS114S06IRHBT integrates a 2.5-V internal voltage reference with ±0.1% initial accuracy (VQFN package) and maximum 10 ppm/°C temperature drift over –50°C to +125°C. It provides up to ±10 mA output current and supports external buffering via REFP0/REFN0. The reference is factory-trimmed and does not require external components beyond a 1–47 µF capacitor on REFOUT for stability.

How many analog input channels does the ADS114S06IRHBT support?

The ADS114S06IRHBT supports six analog input channels (AIN0–AIN5) plus AINCOM, implemented via an integrated analog multiplexer. Unlike the ADS114S08IRHBT, it does not support AIN6–AIN11 or REFP1/REFN1 functions-these pins are unconnected in the RHB package. This 6-channel configuration optimizes die size and cost for applications needing moderate channel count without sacrificing integration.

Can the ADS114S06IRHBT perform self-calibration?

Yes, the ADS114S06IRHBT supports both self-offset calibration and system-gain calibration via SPI register commands. Self-calibration corrects internal offset errors at power-up or on-demand, achieving residual offset on the order of input-referred noise. System calibration uses external known references to correct gain and channel-specific errors. These routines are detailed in Section 9.5 of the ADS114S06IRHBT datasheet SBAS815A.

What package type is used for the ADS114S06IRHBT?

The ADS114S06IRHBT is supplied in a 32-pin VQFN package (RHB) measuring 5.0 mm × 5.0 mm with an exposed thermal pad. This leadless, surface-mount package features fine-pitch leads and is optimized for automated assembly and thermal performance in compact industrial modules. The thermal pad must be soldered to AVSS for proper heat dissipation and electrical reference integrity.