Texas Instruments ADS5500IPAP

Overview

ADS5500IPAP from Texas Instruments is a 14-bit, 125 Msps pipeline analog-to-digital converter with 71.2 dBFS SNR at 100-MHz f_IN, 82 dBc SFDR, 2.3-V_PP differential input range, and internal voltage reference. It operates from a single 3.3-V supply, dissipates 578 mW analog power, and targets high-dynamic-range signal acquisition in space-constrained RF receivers and instrumentation.

For engineers reviewing the ADS5500IPAP datasheet, ADS5500IPAP pinout, ADS5500IPAP application, or ADS5500IPAP equivalent, this page delivers verified technical context, real-world timing behavior (17.5-cycle latency, 300-fs aperture jitter), package-validated thermal performance (θ_JA = 21.47°C/W), and precise serial programming register mapping - all confirmed against TI SBAS303F Rev. F.

Technical Context

The ADS5500IPAP implements a switched-capacitor pipeline architecture using both rising and falling edges of the input clock to advance samples every half-cycle, resulting in a fixed 17.5-clock-cycle data latency. Its on-chip DLL enables stable 125 Msps operation with 300-fs aperture uncertainty and supports differential sine-wave clock inputs up to 3 V_PP.

It integrates a high-bandwidth linear sample-and-hold stage (750 MHz analog input bandwidth), internal reference (V_REFP = 2.11 V, V_REFM = 0.97 V), and CMOS-compatible parallel outputs with programmable data format (straight binary or two's complement) and CLKOUT polarity via the DFS pin.

Key Specifications

Pinout & Package

ADS5500IPAP is housed in a 64-pin HTQFP PowerPAD™ package (PAP designation) with exposed thermal pad soldered to analog ground. Package dimensions are 10 mm × 10 mm × 1.0 mm, θ_JA = 21.47°C/W (JEDEC 4-layer PCB), and θ_JC = 2.99°C/W.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADS5500IPAP, ADS5560IPAP trades speed for resolution and lower power, while AD9446BSTZ-105 offers higher resolution at reduced speed but demands more support circuitry and higher supply voltage - making ADS5500IPAP optimal for 125 Msps, 14-bit, single-supply embedded RF digitization.

Availability

ADS5500IPAP is available at Aetrix Electronics and suitable for wireless infrastructure, radar signal processing, and portable test equipment requiring stable component supply across industrial temperature ranges (–40°C to 85°C).

Supply support for ADS5500IPAP 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 and embedded processing technologies, with decades of ADC innovation focused on performance, integration, and reliability.

The ADS5500IPAP belongs to TI's high-speed pipeline ADC product line, designed specifically for RF-sampling and IF-digitization applications where 125 Msps throughput, 14-bit accuracy, and single-supply operation are mandatory.

FAQ

What is the guaranteed operating temperature range for ADS5500IPAP?

The ADS5500IPAP is specified for industrial temperature operation from –40°C to +85°C. This range is validated per TI SBAS303F Rev. F, with all electrical characteristics (including SNR, SFDR, and latency) tested across this full span. The "I" suffix in ADS5500IPAP explicitly denotes industrial-grade qualification, distinguishing it from the commercial-grade ADS5500CPAP (0°C to 70°C).

Does ADS5500IPAP require an external reference voltage?

No, ADS5500IPAP does not require an external reference voltage. It integrates a complete reference subsystem with REFP (2.11 V), REFM (0.97 V), and CM (1.55 V ±0.05 V) outputs. Per the datasheet, a 1-µF capacitor must be placed from REFP and REFM to AGND, and IREF must be biased with a 56.2-kΩ resistor to AGND - no external reference IC is needed.

How is the 17.5-cycle latency of ADS5500IPAP implemented and verified?

The 17.5-cycle latency of ADS5500IPAP is a deterministic, architecture-level characteristic of its pipeline conversion process, confirmed in the Timing Characteristics table (page 6) and Application Information section (page 22). It represents the fixed delay from input clock rising edge to first valid D0–D13 output word, independent of input signal frequency or amplitude, and is ensured by design and characterization - not production-tested per unit.

Can ADS5500IPAP operate without enabling the internal DLL?

Yes, ADS5500IPAP can operate with the internal DLL disabled, supporting sampling rates from 2 Msps to 80 Msps. However, at 125 Msps, the DLL must be enabled (register bit DLL=1) to meet timing specifications - disabling it at full rate causes aperture jitter to exceed 300 fs and violates AC performance guarantees per SBAS303F Table 1 and Figure 33–36.

What are the absolute maximum ratings for analog input voltage on ADS5500IPAP?

The absolute maximum analog input voltage for ADS5500IPAP is –0.3 V to min(AVDD + 0.3 V, 3.6 V) relative to AGND. At AVDD = 3.3 V, this permits up to 3.6 V peak per input. For inputs exceeding 3.6 V, a ≥25-Ω series resistor per input is mandatory; inputs above 3.8 V are only allowed as transients with <5% duty cycle, per Absolute Maximum Ratings table (page 2) and footnote (2).