Texas Instruments ADS2807Y/1K5

Overview

ADS2807Y/1K5 from Texas Instruments is a dual, 12-bit, 50 MSPS pipelined analog-to-digital converter with internal reference, 66 dB SNR (2 V_p-p), ±0.6 LSB DLE, and TQFP-64 package. It delivers high dynamic range for IF sampling in communications base stations and medical imaging systems.

For engineers reviewing the ADS2807Y/1K5 datasheet, ADS2807Y/1K5 pinout, ADS2807Y/1K5 application, or ADS2807Y/1K5 equivalent, key selection criteria include differential linearity at 50 MHz sampling, over-range flag behavior per channel, flexible 2–3 V_p-p input range selection, and CMOS-compatible 3-state digital outputs with 6-cycle latency.

Technical Context

The ADS2807Y/1K5 implements two independent 12-bit pipelined ADCs, each with 11-stage architecture and on-chip digital error correction logic to guarantee no missing codes and ±0.6 LSB differential linearity error across temperature. Its differential track-and-hold supports both differential and single-ended analog inputs with 270 MHz analog bandwidth and 1.2 ps rms aperture jitter.

Each channel features dedicated output enable (OEA/OEB), over-range indicator (OVRA/OVRB), and logic driver supply (VDRVA/VDRVB) pins, enabling independent channel control and multiplexed board-level testability. The internal reference can be disabled via INT/EXT pin to support low-drive external references for multichannel system tracking.

Key Specifications

Pinout & Package

TQFP-64 power package with exposed thermal pad (PAP designation); 10 mm × 10 mm footprint, 1.4 mm height, lead pitch 0.5 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADS2807Y/1K5, ADS2806Y/1K5 reduces channel count while retaining identical per-channel specs and layout compatibility, whereas AD9226ASTZ trades dual-channel integration for higher speed and external reference flexibility-neither is pin-compatible, and both require PCB redesign.

Availability

ADS2807Y/1K5 is available at Aetrix Electronics and suitable for communications base stations, medical imaging subsystems, and automated test equipment requiring stable component supply across extended temperature ranges (–40°C to +85°C).

Supply support for ADS2807Y/1K5 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 ADS2807Y/1K5 belongs to TI's high-speed precision ADC product line, designed specifically for demanding IF sampling, medical imaging, and instrumentation applications requiring dual-channel synchronization and low-latency deterministic timing.

FAQ

What is the maximum sampling rate supported by the ADS2807Y/1K5?

The ADS2807Y/1K5 supports a maximum sampling rate of 50 MSPS, verified across the full operating temperature range (–40°C to +85°C). At this rate, it maintains 66 dB SNR (2 V_p-p) and ±0.6 LSB differential linearity error. Lower rates down to 10 kSPS are also supported, with improved SNR at reduced speeds. The ADS2807Y/1K5 uses a rising-edge-activated convert clock with minimum pulse width of 9 ns.

Does the ADS2807Y/1K5 support both differential and single-ended analog inputs?

Yes, the ADS2807Y/1K5 supports both configurations. Each channel (A and B) accepts differential inputs via complementary pairs (INA/INA, INB/INB) or single-ended inputs by biasing one input to common-mode voltage while driving the other. Differential mode minimizes even-order harmonics and improves noise immunity; single-ended mode simplifies interface design but reduces SFDR. The ADS2807Y/1K5's input structure and internal biasing allow either method without hardware modification.

How does the internal reference work, and can it be disabled?

The ADS2807Y/1K5 includes an internal reference with REFT and REFB pins providing nominal +3.0 V and +2.0 V for 2 V_p-p full-scale range. It is enabled by default and can be disabled by asserting HIGH on the INT/EXT pin, which disconnects the internal 50 kΩ pull-up and allows external reference sources. Disabling the internal reference reduces power by ~20 mW and improves tracking in multichannel systems using a shared low-noise reference. The ADS2807Y/1K5 specifies tolerance and drift for both internal and external reference modes.

What is the function of the OVRA and OVRB pins on the ADS2807Y/1K5?

OVRA and OVRB are open-drain over-range indicator outputs for Channels A and B respectively. They assert LOW when the corresponding analog input exceeds the selected full-scale range (2 V_p-p or 3 V_p-p). These flags are asynchronous to the clock and settle within 2 ns of over-range condition onset. They are commonly used to trigger front-end gain reduction in automatic level control (ALC) loops. The ADS2807Y/1K5 provides independent flags per channel to support asymmetric signal monitoring in I/Q or stereo systems.

What package type and thermal characteristics does the ADS2807Y/1K5 have?

The ADS2807Y/1K5 is housed in a TQFP-64 power package (PAP designation) with exposed thermal pad, measuring 10 mm × 10 mm and 1.4 mm height. Its junction-to-ambient thermal resistance (θ_JA) is 21.5 °C/W under standard JEDEC conditions. This package supports reliable operation up to +100°C case temperature and +150°C junction temperature. The ADS2807Y/1K5's thermal design enables continuous 720 mW operation in compact, convection-cooled base station modules without forced airflow.