Texas Instruments ADS5440IPFPR

Overview

ADS5440IPFPR 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 internal reference generation. It operates from a 5 V analog supply and 3.3 V output driver supply, delivering 69 dBc SNR at 100-MHz IF and 76 dBc SFDR under full-rate sampling-enabling high-fidelity digitization in wideband receiver front-ends.

For engineers reviewing the ADS5440IPFPR datasheet, ADS5440IPFPR pinout, ADS5440IPFPR application, or ADS5440IPFPR equivalent, key selection criteria include its 2.2 VPP differential input range, 800 MHz analog input bandwidth, 4-cycle latency, industrial temperature range (–40°C to 85°C), and TQFP-80 PowerPAD™ package compatibility with ADS5444.

Technical Context

The ADS5440IPFPR employs a monolithic pipeline architecture with bipolar BiCom3X process technology, where conversion is initiated on the rising clock edge and data propagates through stages using both clock edges-achieving 210 MSPS throughput with deterministic 4-cycle latency. Its fully differential input buffer isolates external sources from internal switching noise, while an internal 2.4 V reference sets common-mode voltage and enables 2.2 VPP full-scale swing without external components.

Digital outputs use LVDS signaling with differential voltage (0.247–0.452 V) and offset (1.125–1.375 V), driven by a dedicated 3.3 V supply (DRVDD). Timing-critical parameters include aperture jitter of 150 fs RMS, clock-to-DataReady delay of 3.1–3.9 ns, and setup/hold times of 3.5 ns / 0.2 ns relative to clock-supporting precise synchronization in multi-ADC systems.

Key Specifications

Pinout & Package

The ADS5440IPFPR 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 thermal compliance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADS5444IPFPR and ADS5424IPFP, the ADS5440IPFPR uniquely balances 210 MSPS speed, 13-bit resolution, and industrial temperature rating in a pin-compatible package-making it optimal for cost-sensitive, high-volume basestation and instrumentation designs requiring proven 210 MSPS performance.

Availability

ADS5440IPFPR 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 production lifecycles.

Supply support for ADS5440IPFPR 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 ADS5440IPFPR belongs to TI's high-speed ADC product line, designed specifically for wideband communications infrastructure and precision instrumentation demanding >200 MSPS sampling with low distortion and deterministic latency.

FAQ

What is the maximum analog input frequency supported by the ADS5440IPFPR?

The ADS5440IPFPR has an analog input bandwidth of 800 MHz, meaning it maintains specified AC performance-including SNR and SFDR-up to that frequency. This allows direct undersampling of IF signals up to 400 MHz (Nyquist-limited) with minimal degradation, as confirmed by typical characteristics showing 66.9 dBc SNR at 300 MHz and 65 dBc at 400 MHz under 210 MSPS operation.

Does the ADS5440IPFPR require an external reference voltage?

No, the ADS5440IPFPR does not require an external reference voltage. It integrates an internal 2.4 V reference generator that sets the input common-mode voltage and defines the full-scale differential input range of 2.2 VPP. Pin 6 (VREF) provides access to this internal reference, which eliminates the need for external reference ICs or resistor dividers in most applications.

What is the latency of the ADS5440IPFPR and how is it defined?

The ADS5440IPFPR has a fixed latency of 4 clock cycles from the rising edge of the sampling clock to valid output data. This latency is deterministic and consistent across temperature and supply variations. It reflects the time required for the pipeline architecture to complete conversion and deliver the 13-bit offset binary word on the LVDS outputs, as verified in timing characterization tables and application diagrams.

Can the ADS5440IPFPR be driven with a single-ended clock input?

Yes, the ADS5440IPFPR can be driven with a single-ended clock input. Per the datasheet, connecting CLK to ground via a 0.01 µF capacitor while ac-coupling the clock source to CLK achieves comparable jitter performance to differential drive in low-frequency applications. However, for jitter-sensitive systems (e.g., high-order QAM demodulation), a differential clock is recommended to reject common-mode noise.

What thermal management is required for the ADS5440IPFPR in continuous operation?

The ADS5440IPFPR dissipates up to 2.28 W and requires thermal management via its PowerPAD™ slug. The datasheet specifies θJC = 2.99 °C/W when soldered with 36 thermal vias (6×6 array) to a solid ground plane. Without proper thermal vias, junction temperature may exceed 150°C under full load-so PCB layout must follow TI's PFP package guidelines to ensure reliable operation across –40°C to 85°C.