Texas Instruments ADS8363SRHBR

Overview

ADS8363SRHBR from Texas Instruments is a dual, 16-bit, 1-MSPS successive-approximation register (SAR) analog-to-digital converter with eight pseudo-differential or four fully-differential input channels, simultaneous sampling capability, 93-dB SNR, –98-dB THD, and operation across –40°C to +125°C for motor current and position measurement in safety-critical industrial drives.

For engineers reviewing the ADS8363SRHBR datasheet, ADS8363SRHBR pinout, ADS8363SRHBR application, or ADS8363SRHBR equivalent, this page delivers verified technical context, real-world timing and accuracy specs, validated pin functions, confirmed alternatives, and supply-chain support for high-reliability embedded acquisition systems.

Technical Context

The ADS8363SRHBR implements two independent SAR ADC cores with shared reference architecture and synchronized CONVST-triggered sampling, enabling true simultaneous acquisition across two channel pairs (A and B). Its dual 2.5-V programmable reference outputs (REFIO1/REFIO2) support independent input range scaling or two-level PGA implementation per channel group.

It supports half-clock (0.5–20 MHz) and full-clock (1–40 MHz) modes, with conversion time of 17.5 tCLK (half-clock) or 35 tCLK (full-clock), integrated FIFO buffering up to four samples per channel, and a 2-bit counter for functional safety monitoring - all fully specified over the extended industrial temperature range.

Key Specifications

Pinout & Package

ADS8363SRHBR is housed in a 5.0 mm × 5.0 mm, 32-pin VQFN (RHB) package with exposed thermal pad. Pin functions are validated per TI SBAS523D Rev D.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-channel, simultaneous-sampling ADC applications.

Compared with ADS7263SRHBR, ADS8363SRHBR delivers 2 extra bits of resolution and 8 dB higher SNR for precision metrology, while AD7606C-16BSTZ trades pin compatibility and dual-reference programmability for higher channel density and integrated signal conditioning - making ADS8363SRHBR optimal for dual-path, safety-aware industrial acquisition.

Availability

ADS8363SRHBR is available at Aetrix Electronics and suitable for motor control, power quality monitoring, and protection relay applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for industrial OEMs.

Supply support for ADS8363SRHBR 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, embedded processing, and high-reliability signal chain solutions.

The ADS8363SRHBR belongs to TI's precision SAR ADC product line, engineered for simultaneous, high-fidelity acquisition in demanding industrial automation, energy infrastructure, and functional safety systems.

FAQ

What is the maximum clock frequency supported by ADS8363SRHBR in full-clock mode?

The ADS8363SRHBR supports a maximum clock frequency of 40 MHz in full-clock mode, delivering a minimum conversion time of 35 clock cycles (875 ns). This enables deterministic 1-MSPS throughput per ADC with timing margins compliant to SBAS523D Rev D specifications across –40°C to +125°C.

Does ADS8363SRHBR require external reference components?

ADS8363SRHBR integrates dual programmable 2.5-V reference outputs (REFIO1/REFIO2) that require only 22-µF ceramic capacitors to RGND per output - no external voltage references or op-amps are needed. The device also accepts external 0.5–2.525-V references via these pins if higher precision or custom ranges are required.

How does the simultaneous sampling feature work in ADS8363SRHBR?

ADS8363SRHBR uses a single CONVST signal to initiate simultaneous track-and-hold on both ADC channels (A and B), followed by independent SAR conversions. Aperture delay matching is guaranteed at ≤50 ps, ensuring phase-coherent acquisition essential for vector-controlled motor drives and power metering.

Can ADS8363SRHBR operate with separate analog and digital supply voltages?

Yes, ADS8363SRHBR supports independent AVDD (2.7–5.5 V) and DVDD (2.3–3.6 V or 4.5–5.5 V) supplies, with dedicated AGND, DGND, and RGND pins. This separation minimizes digital noise coupling into analog paths - critical for achieving 93-dB SNR in mixed-signal industrial PCB layouts.

Is ADS8363SRHBR qualified for functional safety applications?

Yes, ADS8363SRHBR includes a hardware 2-bit safety counter, operates across –40°C to +125°C, and features dual independent reference paths - enabling diagnostic coverage for IEC 61508 SIL-2 and ISO 26262 ASIL-B compliance when implemented per TI's functional safety manual (SPNU570).