Texas Instruments ADS5440IPFP

Overview

ADS5440IPFP from Texas Instruments is a 13-bit, 210 MSPS analog-to-digital converter (ADC) with fully buffered differential analog inputs, LVDS-compatible digital outputs, and an integrated 2.4 V reference. It operates from a 5 V analog supply and 3.3 V output driver supply, delivering 69 dBc SNR at 100 MHz IF and 210 MSPS for high-fidelity signal acquisition in wideband receivers.

For engineers reviewing the ADS5440IPFP datasheet, ADS5440IPFP pinout, ADS5440IPFP application, or ADS5440IPFP equivalent, key selection considerations include its 800 MHz analog input bandwidth, 4-cycle latency, 2.2 VPP differential input range, industrial temperature rating (–40°C to 85°C), and TQFP-80 PowerPAD™ package with thermal slug.

Technical Context

The ADS5440IPFP implements a monolithic pipeline architecture using Texas Instruments' BiCom3X bipolar process. Conversion is initiated on the rising edge of the differential clock, with both clock edges used internally to advance samples through stages every half-cycle, resulting in deterministic 4-clock-cycle latency.

Its analog front-end features a fully differential input buffer followed by a track-and-hold stage, isolating external sources from internal switching noise. An internal 2.4 V reference sets input common-mode voltage via 500 Ω resistors, enabling a fixed 1 kΩ differential input impedance and eliminating need for external biasing.

Key Specifications

Pinout & Package

The ADS5440IPFP is housed in an 80-pin HTQFP PowerPAD™ package (PFP designator) with a 7.5 mm × 7.5 mm thermal slug. The exposed thermal pad must be soldered to PCB ground plane using ≥36 thermal vias for θ_JA = 21.7°C/W (soldered, no airflow).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed ADC applications.

Compared with ADS5444IPFP, the ADS5440IPFP trades 40 MSPS speed for lower power and relaxed clock jitter requirements; compared with ADS5424IPFP, it doubles sample rate at the cost of 1-bit resolution, favoring wideband over precision applications.

Availability

ADS5440IPFP is available at Aetrix Electronics and suitable for test and measurement equipment, software-defined radio platforms, and multi-channel basestation receivers requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for ADS5440IPFP 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, automotive, and communications markets.

The ADS5440IPFP belongs to TI's high-speed pipeline ADC product line, designed specifically for wideband communication infrastructure and instrumentation where speed, linearity, and thermal robustness are critical.

FAQ

What is the maximum analog input frequency supported by the ADS5440IPFP?

The ADS5440IPFP has an analog input bandwidth of 800 MHz, meaning it maintains specified AC performance (e.g., SNR, SFDR) up to that frequency. This enables direct RF sampling in L-band applications without external bandpass filtering, though system-level anti-aliasing remains necessary per Nyquist criteria at 210 MSPS.

Does the ADS5440IPFP require an external reference voltage?

No, the ADS5440IPFP integrates an internal 2.4 V reference generator. Pin VREF provides this voltage for internal use and may be bypassed with a 0.1 µF capacitor, but must not be loaded externally. No external reference IC or resistor network is needed for standard operation.

How is latency defined for the ADS5440IPFP, and what is its value?

Latency for the ADS5440IPFP is the delay between the rising edge of the input clock and valid data appearing on the LVDS outputs. It is fixed at 4 clock cycles - a deterministic value critical for time-sensitive applications like phased-array beamforming and real-time DPD loops. At 210 MSPS, this equals 18.9 ns.

Can the ADS5440IPFP accept single-ended clock inputs?

Yes, the ADS5440IPFP supports single-ended clock drive: connect CLK to ground via a 0.01 µF capacitor and ac-couple the clock source to CLK. However, differential clocking is preferred for jitter-sensitive applications, as it provides common-mode noise rejection and better timing margin.

What thermal management is required for the ADS5440IPFP in continuous 210 MSPS operation?

The ADS5440IPFP dissipates up to 2.28 W and uses an exposed thermal pad (PowerPAD™). For reliable operation, the pad must be soldered to a solid PCB ground plane with ≥36 thermal vias (6×6 array) to achieve θ_JA ≤ 21.7°C/W. Without proper thermal design, junction temperature may exceed 150°C, risking parametric drift or failure.