Texas Instruments ADS2807Y/250

Overview

ADS2807Y/250 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 performs high-fidelity IF digitization in communications base stations and medical imaging systems where dynamic range and channel isolation are critical.

For engineers reviewing the ADS2807Y/250 datasheet, ADS2807Y/250 pinout, ADS2807Y/250 application, or ADS2807Y/250 equivalent, key selection factors include differential linearity at 50 MHz sampling, over-range flag behavior per channel, dual-channel crosstalk (<85 dBFS), and flexible 2–3 V_p-p input range configuration via SEL and INT/EXT pins.

Technical Context

The ADS2807Y/250 implements an 11-stage pipelined ADC architecture with on-chip digital error correction logic, delivering no missing codes and ±0.6 LSB typical differential linearity error across temperature. Each channel features independent track-and-hold with differential or single-ended input support and programmable full-scale range.

It integrates dual independent reference paths (REFTA/REFBA and REFTB/REFBB), supports external reference injection with 375 Ω input resistance, and provides per-channel output enable (OEA/OEB) and over-range flags (OVRA/OVRB) synchronized to the 6-cycle pipeline latency.

Key Specifications

Pinout & Package

TQFP-64 power package with exposed thermal pad; 10 mm × 10 mm body, 0.5 mm pitch, JEDEC MO-220 standard.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADS2806Y/250 and AD9236BCPZ-50, the ADS2807Y/250 uniquely delivers true dual-channel synchronization, per-channel over-range monitoring, and integrated common-mode bias-reducing external component count by ≥7 parts in multichannel receiver designs.

Availability

ADS2807Y/250 is available at Aetrix Electronics and suitable for communications infrastructure, medical imaging equipment, and automated test equipment requiring stable component supply across extended product lifecycles.

Supply support for ADS2807Y/250 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 leadership in high-performance data converters.

The ADS2807Y/250 belongs to TI's high-speed precision ADC product line, designed specifically for demanding dual-channel digitization in communications, medical, and instrumentation applications where dynamic range and channel matching are critical.

FAQ

What is the maximum sampling rate supported by the ADS2807Y/250?

The ADS2807Y/250 supports a maximum sampling rate of 50 MSPS, verified across the full –40°C to +85°C operating temperature range. At this rate, it maintains 66 dB SNR (2 V_p-p) and 72 dBFS SFDR, with deterministic 6-clock-cycle latency. The device is characterized for stable operation up to 100 µs minimum convert clock period, enabling reliable high-speed acquisition in real-time systems.

Does the ADS2807Y/250 require external reference components?

No-the ADS2807Y/250 includes an internal reference that supports both 2 V_p-p and 3 V_p-p full-scale ranges without external components. When INT/EXT is pulled LOW, the internal 50 kΩ pull-up enables the on-chip reference. External references can be applied via REFTA/REFBA and REFTB/REFBB pins if tighter tracking or lower drift is required across multiple ADS2807Y/250 devices.

How does the SEL pin affect the ADS2807Y/250 input range?

The SEL pin directly configures the full-scale input range of the ADS2807Y/250: logic HIGH selects 3 V_p-p differential input range, while logic LOW selects 2 V_p-p. This setting adjusts the internal reference divider ratio and is functional with both internal and external references. The corresponding input voltage ranges are 1.75–3.25 V (differential, 3 V_p-p) or 2–3 V (differential, 2 V_p-p), as specified in the electrical characteristics table.

What is the purpose of the CMA and CMB pins on the ADS2807Y/250?

The CMA and CMB pins on the ADS2807Y/250 provide buffered common-mode output voltages (+2.5 V nominal) for each channel, eliminating the need for external bias networks when driving differential amplifiers. These outputs are internally derived from the reference circuitry and maintain tight regulation across temperature, simplifying analog front-end design and improving system-level noise immunity in high-density layouts.

Can the ADS2807Y/250 operate with single-ended analog inputs?

Yes-the ADS2807Y/250 supports single-ended operation: apply the signal to one input (e.g., INA) and bias the complementary input (INA) to the required common-mode voltage (typically +2.5 V). Performance trade-offs include ~2–3 dB SNR reduction and higher harmonic distortion versus differential mode, but interface complexity is reduced. The device's input structure ensures matched impedance and performance on both pins, allowing phase inversion control via input selection.