Texas Instruments ADS8364Y/250

Overview

ADS8364Y/250 from Texas Instruments is a 16-bit, 250kSPS simultaneous-sampling analog-to-digital converter with six fully differential input channels, six independent SAR ADCs, and 4µs per-channel throughput. It features buffered reference inputs, 80dB CMRR at 50kHz, and operates from single +5V analog/digital supplies with 3V–5V interface voltage support. It is used in high-precision motor control systems requiring phase-coherent multi-channel acquisition.

For engineers reviewing the ADS8364Y/250 datasheet, ADS8364Y/250 pinout, ADS8364Y/250 application, or ADS8364Y/250 equivalent, key selection criteria include simultaneous sampling capability across three channel pairs (A/B/C), 14-bit no-missing-codes performance, internal 2.5V reference with ±1% initial accuracy, and TQFP-64 package compatibility with industrial temperature range (–40°C to +85°C).

Technical Context

The ADS8364Y/250 implements six parallel 16-bit successive approximation register (SAR) ADCs, each paired with a fully differential sample-and-hold amplifier maintaining signal integrity through the conversion path. Its architecture supports true simultaneous sampling via three dedicated HOLD signals (HOLDA/HOLDB/HOLDC), preserving inter-channel phase relationships critical for multi-axis feedback loops.

It integrates a double-buffered 2.5V internal reference (±1% initial accuracy, ±20ppm/°C drift) with REFIN/REFOUT pins, enabling both internal reference operation and external reference flexibility (1.5V–2.6V). The high-speed parallel interface offers direct address, cycle, and FIFO read modes with 16-bit two's complement output data and CMOS/LVCMOS-compatible digital I/O.

Key Specifications

Pinout & Package

TQFP-64 package (PAG designation), 10 mm × 10 mm body, 0.5 mm pitch, exposed thermal pad. Pin 1 marked by corner notch; pin numbering follows standard counter-clockwise sequence.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADS8364Y/250, ADS8365IPAG offers extended temperature operation with identical functionality, while AD7656ASTZ trades parallel interface speed and integrated reference for smaller footprint and SPI compatibility-neither is pin-compatible, but both serve overlapping multi-channel precision acquisition roles.

Availability

ADS8364Y/250 is available at Aetrix Electronics and suitable for motor control, multi-axis positioning systems, and 3-phase power control requiring stable component supply across industrial production cycles and long-lifecycle embedded deployments.

Supply support for ADS8364Y/250 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-performance signal chain solutions with decades of precision data converter expertise.

The ADS8364Y/250 belongs to TI's high-speed simultaneous-sampling ADC product line, designed specifically for industrial automation, motor control, and power quality monitoring where phase-coherent multi-channel acquisition is mandatory.

FAQ

What is the maximum clock frequency supported by the ADS8364Y/250?

The ADS8364Y/250 supports an external CMOS-compatible clock up to 5 MHz. At this frequency, it achieves its rated 250kSPS throughput with 4 µs total conversion time per channel. Clock duty cycle must maintain ≥60 ns high/low pulse width, and minimum clock period is 200 ns. Exceeding 5 MHz violates timing specifications and risks data corruption or missing codes in ADS8364Y/250 operation.

Does the ADS8364Y/250 require an external reference voltage?

No-the ADS8364Y/250 includes an internal 2.5 V reference with ±1% initial accuracy and ±20 ppm/°C drift, accessible via REFOUT (pin 61). It can operate with REFIN (pin 62) tied directly to REFOUT. An external reference (1.5 V–2.6 V) is optional and used only when tighter initial accuracy or custom full-scale range is needed. The internal reference eliminates external components in most ADS8364Y/250 implementations.

How does the ADS8364Y/250 achieve simultaneous sampling across six channels?

The ADS8364Y/250 achieves true simultaneous sampling using three dedicated HOLD signals (HOLDA, HOLDB, HOLDC), each controlling a pair of differential inputs (A0/A1, B0/B1, C0/C1). Asserting all three HOLD lines concurrently places all six sample-and-hold amplifiers into hold mode at the same instant, freezing analog inputs before conversion begins. This preserves phase relationships-critical for vector control-and is confirmed by 100 ps aperture delay matching across channels in ADS8364Y/250 characterization.

What digital interface options does the ADS8364Y/250 support?

The ADS8364Y/250 supports a 16-bit parallel interface with three configurable read modes: direct address (using A0–A2), cycle mode (auto-sequencing through all six channels), and FIFO mode (data ordered by HOLD signal assertion sequence). It accepts 3V or 5V logic levels (LVCMOS/CMOS), includes BYTE pin for 8-bit nibble reads, and uses RD/CS/WR for handshaking. No serial protocol support is provided in ADS8364Y/250.

Is the ADS8364Y/250 pin-compatible with other devices in the ADS836x family?

Yes-the ADS8364Y/250 shares identical TQFP-64 (PAG) pinout and signal mapping with ADS8365IPAG and ADS8361Y/250. All three use the same pin assignments for analog inputs, HOLD lines, REFIO, digital interface, and power. However, ADS8364Y/250 differs in temperature rating (–40°C to +85°C vs. +105°C for ADS8365IPAG) and internal reference configuration-functionality is compatible, but thermal validation is required when substituting ADS8364Y/250 in ADS8365IPAG designs.