Texas Instruments ADS5423IPGP

Overview

ADS5423IPGP from Texas Instruments is a 14-bit, 80 MSPS pipeline analog-to-digital converter operating from a 5 V analog supply and delivering 3.3 V CMOS-compatible parallel digital outputs. It features 2.2 Vpp differential input range, 74 dBc SNR at 50 MHz IF, 94 dBc SFDR, on-chip track-and-hold and reference generator, and is packaged in a 52-pin HTQFP with exposed heatsink. It targets high-performance IF sampling in multichannel base station receivers.

For engineers reviewing the ADS5423IPGP datasheet, ADS5423IPGP pinout, ADS5423IPGP application, or ADS5423IPGP equivalent, key selection considerations include its 80 MSPS sampling rate with 570 MHz analog input bandwidth, industrial temperature range (−40°C to 85°C), 1.85 W total power dissipation, 3-cycle latency, and pin compatibility with AD6645 for drop-in replacement in existing designs.

Technical Context

The ADS5423IPGP implements a monolithic bipolar pipeline architecture where both rising and falling clock edges advance samples through successive stages, achieving 80 MSPS throughput with deterministic 3-clock-cycle latency. Its internal analog buffer isolates external signal sources from switching noise, while integrated 2.4 V reference and differential input termination simplify front-end design.

It uses BiCom3 process technology to support 5 V analog core operation alongside 3.3 V digital output drivers, enabling direct interfacing with standard CMOS logic without level-shifting. The device maintains specified AC performance across full industrial temperature range with no missing codes and ±0.5 LSB typical DNL.

Key Specifications

Pinout & Package

ADS5423IPGP is housed in a 52-pin HTQFP (PYP) package with exposed thermal pad (PowerPad™) for enhanced heat dissipation. Pin assignments are validated per TI SLWS160A datasheet Figure 6 and Table "PIN ASSIGNMENTS".

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD6645ASTZ, ADS5423IPGP delivers 4 dB higher SFDR for cleaner spectral purity in multicarrier systems; compared with ADS5463IPFP, it offers proven thermal reliability at lower cost and complexity for 80 MSPS-class infrastructure applications.

Availability

ADS5423IPGP is available at Aetrix Electronics and suitable for base station infrastructure, instrumentation test systems, and digital receiver front-ends requiring stable component supply over extended production lifecycles.

Supply support for ADS5423IPGP 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 over 50 years of innovation in data conversion and signal chain solutions.

The ADS5423IPGP belongs to TI's high-speed ADC portfolio designed specifically for communications infrastructure and test equipment, emphasizing low jitter, high SFDR, and robust thermal performance in industrial environments.

FAQ

What is the maximum analog input frequency supported by the ADS5423IPGP?

The ADS5423IPGP specifies an analog input bandwidth of 570 MHz, meaning it maintains flat frequency response (−3 dB point) up to that frequency. At 230 MHz input, it still achieves 71.5 dBc SNR and 64 dBc SFDR under 80 MSPS sampling, confirming usability well into UHF bands for undersampling applications.

Does the ADS5423IPGP require external reference components?

No, the ADS5423IPGP integrates a 2.4 V bandgap reference generator. External 0.1 µF microwave capacitors are required only on VREF, C1, and C2 pins for bypassing-no external reference IC, resistors, or trimming is needed, simplifying layout and improving long-term drift stability.

How is thermal management handled for the ADS5423IPGP in continuous operation?

The ADS5423IPGP uses a thermally enhanced HTQFP package with exposed PowerPad™. TI specifies θJC = 2°C/W to the heatsink; successful thermal design requires soldering the pad with ≥25 thermal vias (5×5 array) to an internal ground plane, achieving ≤150°C junction temperature at 1.85 W dissipation with 200 LFPM airflow.

Can the ADS5423IPGP interface directly with 3.3 V FPGA I/O banks?

Yes, the ADS5423IPGP provides true 3.3 V CMOS-compatible digital outputs (VOH ≥ 2.6 V, VOL ≤ 0.6 V at 10 pF load), matching LVTTL and 3.3 V LVCMOS logic thresholds. No level shifters are required when interfacing with Xilinx Artix-7 or Intel Cyclone V FPGA I/O banks configured for 3.3 V operation.

What clocking configurations are supported by the ADS5423IPGP?

The ADS5423IPGP accepts either differential (LVDS/PECL-compatible) or single-ended (CMOS/sine) clock inputs. For lowest jitter, differential drive is recommended; for cost-sensitive applications, single-ended drive with CLK tied to source and CLK grounded via 0.01 µF capacitor yields equivalent AC performance per TI application note SBAA113.