Texas Instruments TLV1572IDR

Overview

TLV1572IDR from Texas Instruments is a 10-bit successive-approximation analog-to-digital converter (ADC) operating from a single 2.7 V to 5.5 V supply in an 8-pin SOIC package. It delivers 1.25 MSPS throughput, < ±1 LSB integral and differential nonlinearity, 59 dB SNR at 500 kHz input, and auto-powerdown mode drawing ≤10 µA. It serves high-speed data acquisition in DSP-based motor control and industrial sensor interfaces.

For engineers reviewing the TLV1572IDR datasheet, TLV1572IDR pinout, TLV1572IDR application, or TLV1572IDR equivalent, key selection criteria include serial interface compatibility with TMS320 DSPs and SPI/QSPI microcontrollers, guaranteed 10-bit monotonicity, SOIC-8 thermal and layout constraints, and −40°C to +85°C industrial temperature operation.

Technical Context

The TLV1572IDR implements a SAR architecture with inherent sample-and-hold, supporting two distinct serial modes: DSP mode (4-wire: CS/SCLK/FS/DO) and µC mode (3-wire: CS/SCLK/DO), selected by FS logic level at CS falling edge. Its internal timing requires precise SCLK edge alignment - sampling initiates on first SCLK rising edge after CS assert in µC mode, or on FS rising edge in DSP mode.

Conversion completes in 10 SCLK cycles; output data is 16-bit frame-padded with six leading zeros, latched on SCLK falling edges by DSP or µC. The device enters auto-powerdown after LSB shift-out and resumes on next valid clock or FS edge - enabling burst-mode acquisition without external power sequencing.

Key Specifications

Pinout & Package

TLV1572IDR is housed in an 8-pin SOIC (D) package with standard JEDEC MS-012AC dimensions (5.3 mm × 6.2 mm, 1.75 mm height), RoHS-compliant NiPdAu lead finish, and MSL Level-1 rating.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 10-bit serial ADC applications.

Compared with ADS7822U and TLV2544IDW, the TLV1572IDR uniquely balances 1.25 MSPS speed, DSP-mode compatibility, and SOIC-8 compactness - making it optimal for cost- and space-constrained real-time control where 10-bit fidelity suffices.

Availability

TLV1572IDR is available at Aetrix Electronics and suitable for mass storage systems, automotive ECU signal conditioning, and digital servo control requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TLV1572IDR 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 connectivity technologies, with decades of expertise in precision data converters and industrial-grade ICs.

The TLV1572IDR belongs to TI's legacy high-speed serial ADC product line, engineered specifically for DSP-centric real-time acquisition in resource-constrained industrial and automotive systems.

FAQ

What is the maximum sampling rate of the TLV1572IDR and under what conditions?

The TLV1572IDR achieves a maximum throughput rate of 1.25 MSPS when operated at VCC = 5 V with an SCLK frequency of 20 MHz. At 3 V supply, the maximum SCLK is 10 MHz, limiting throughput to 625 kSPS. These rates assume proper timing margins per the datasheet's tc, tsu, and th specifications, and are validated across the −40°C to +85°C temperature range for TLV1572IDR.

Does the TLV1572IDR require an external reference voltage?

Yes, the TLV1572IDR requires an external reference voltage applied to the VREF pin, which sets the full-scale input range from GND to VREF. The device accepts VREF from 2.7 V up to VCC, and does not include an internal reference. This allows flexible ratiometric or precision reference configurations depending on system requirements.

How does the TLV1572IDR interface with SPI-compatible microcontrollers?

The TLV1572IDR supports SPI/QSPI mode (µC mode) using three wires: CS, SCLK, and DO. FS must be tied high. It uses CPOL = 0 (SCLK idles low) and CPHA = 1 (data sampled on falling edge). A 16-clock frame delivers 10-bit data padded with six leading zeros. CS must remain low during the full 16-bit transfer unless splitting into two 8-bit reads with <100 µs gap.

What is the purpose of the FS pin on the TLV1572IDR?

The FS (Frame Sync) pin on the TLV1572IDR selects serial interface mode: low enables DSP mode (4-wire, frame-sync triggered), high enables µC mode (3-wire, SCLK-triggered). It is sampled at the CS falling edge and an internally delayed edge to ensure robust mode latching. In µC mode, FS must be externally pulled high; in DSP mode, it provides the conversion start and data framing signal from the host.

Is the TLV1572IDR pin-compatible with other devices in the TLV157x family?

Yes, the TLV1572IDR shares identical 8-pin SOIC (D) package and pinout with all TLV157x variants (e.g., TLV1572CD, TLV1572ID), including identical terminal functions and electrical behavior. Differences are limited to temperature grade (−40°C to +85°C for TLV1572IDR) and packaging (tape-and-reel vs. tube), with no functional or pinout divergence across the family.