Texas Instruments ADS5270IPFP

Overview

ADS5270IPFP from Texas Instruments is an 8-channel, 12-bit, 40MSPS analog-to-digital converter with integrated PLL, simultaneous sample-and-hold, serialized LVDS outputs, and internal/external reference selection. It delivers 70.5dB SNR at 10MHz IF, operates from 3.3V analog/digital supplies, and targets high-density portable ultrasound systems requiring low-power, multi-channel digitization.

For engineers reviewing the ADS5270IPFP datasheet, ADS5270IPFP pinout, ADS5270IPFP application, or ADS5270IPFP equivalent, key selection criteria include its 40MSPS per-channel sampling rate, 12× LVDS clock multiplication, 888mW total power dissipation (internal reference), TQFP-80 PowerPAD package, and support for LSB/MSB-first serial data formatting.

Technical Context

The ADS5270IPFP integrates eight independent 12-bit ADC cores, each with dedicated S/H and LVDS serializer, sharing a single ADCLK input. An on-chip PLL multiplies the 20–40MHz ADCLK by 12 to generate 240MHz LCLK for serialization, enabling 240Mbps per channel over differential LVDS pairs.

It supports dual reference modes: internal (1.95V REFT / 0.95V REFB, 1.45V VCM) or external (REFT/REFB programmable within 1.825–2.0V / 0.9–1.075V), with fixed attenuation matching ≤0.2dB across channels and aperture jitter of 1ps RMS.

Key Specifications

Pinout & Package

The ADS5270IPFP is housed in an HTQFP-80 PowerPAD™ package (12mm × 12mm, 0.5mm pitch) with exposed thermal pad (4.69mm × 4.69mm min) for enhanced heat dissipation in high-density layouts.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar multi-channel ADC applications.

Compared with ADS5270IPFP, ADS5271IPFP offers 25% higher sampling rate at modest power cost, while ADS5272IPFP delivers both speed and precision gains-making them direct upgrade paths rather than drop-in replacements for legacy 40MSPS designs.

Availability

ADS5270IPFP is available at Aetrix Electronics and suitable for portable ultrasound systems, test equipment, optical networking modules, and tape drive subsystems requiring stable component supply across extended production lifecycles.

Supply support for ADS5270IPFP 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 data converters for industrial, medical, and communications infrastructure.

The ADS5270IPFP belongs to TI's high-speed, multi-channel ADC product line designed specifically for space-constrained, low-power medical imaging and instrumentation applications demanding synchronized, high-fidelity digitization.

FAQ

What is the maximum sampling rate supported by the ADS5270IPFP?

The ADS5270IPFP supports a maximum sampling rate of 40MSPS per channel, verified across all eight ADCs simultaneously under recommended operating conditions (AVDD = 3.3V, TA = +25°C). This rate is sustained with full 12-bit performance, including guaranteed no missing codes and 70.5dB SNR at 10MHz input frequency. The device's integrated PLL locks to the ADCLK input to maintain timing integrity at this rate.

Does the ADS5270IPFP require an external clock source, or does it include clock generation?

The ADS5270IPFP requires an external 20–40MHz ADCLK input but includes an integrated PLL that multiplies this clock by 12 to generate the 240MHz LCLK used for LVDS serialization. It does not contain a crystal oscillator or free-running clock generator; the ADCLK must be supplied externally, and the PLL ensures deterministic phase alignment between sampling and data transmission.

How many analog input channels does the ADS5270IPFP have, and what is their configuration?

The ADS5270IPFP has eight fully differential analog input channels (IN1P/IN1N through IN8P/IN8N), each with independent sample-and-hold and ADC core. All channels operate simultaneously with matched gain and offset characteristics-fixed attenuation matching is ≤0.2dB across channels, and integral nonlinearity is ±2.0LSB max-enabling coherent multi-channel signal processing essential for beamforming.

What reference options are available for the ADS5270IPFP, and how are they selected?

The ADS5270IPFP supports internal or external reference modes selected via the INT/EXT pin (pin 69): logic high enables internal 1.95V/0.95V reference (VCM = 1.45V), logic low enables external reference with REFT/REFB pins accepting 1.825–2.0V and 0.9–1.075V respectively. Internal mode reduces BOM count and simplifies layout; external mode allows higher precision or system-level reference sharing.

What package type and thermal characteristics does the ADS5270IPFP use?

The ADS5270IPFP uses an HTQFP-80 PowerPAD™ package (12mm × 12mm, 0.5mm pitch) with an exposed thermal pad. Its thermal resistance is θJA = 19.4°C/W and θJC = 4.2°C/W, enabling effective heat transfer to the PCB ground plane. The minimum thermal pad size is 4.69mm × 4.69mm, and proper solder paste stencil design is critical to achieve rated power dissipation (888mW internal reference).