Texas Instruments ADS2807Y

Overview

ADS2807Y from Texas Instruments is a dual, 12-bit, 50 MSPS pipelined analog-to-digital converter (ADC) with internal reference, differential track-and-hold, and 66 dB SNR at 2 V_p-p. It delivers ±0.6 LSB DLE, 72 dB SFDR at 1 MHz, and operates across –40°C to +85°C in TQFP-64. It is used in communications IF processing and medical imaging systems requiring high dynamic range and low latency.

For engineers reviewing the ADS2807Y datasheet, ADS2807Y pinout, ADS2807Y application, or ADS2807Y equivalent, this page provides verified technical context, real-world interface constraints, confirmed timing behavior (6-cycle latency), package-specific thermal data (θ_JA = 21.5°C/W), and validated alternative options for dual-channel 12-bit sampling at 50 MSPS.

Technical Context

The ADS2807Y integrates two independent 12-bit pipelined ADCs sharing a common clock and reference architecture, each with dedicated 3-state digital outputs, over-range flags (OVRA/OVRB), and output enables (OEA/OEB). Its differential track-and-hold supports both differential and single-ended input modes, with configurable full-scale ranges of 2 V_p-p or 3 V_p-p via the SEL pin.

Digital error correction logic ensures no missing codes and ±0.6 LSB typical DLE across temperature. The device uses CMOS-compatible digital I/O with separate V_DRVA/V_DRVB supplies, supports external or internal reference selection via INT/EXT pin, and features aperture jitter of 1.2 ps rms and 2 ns overvoltage recovery time.

Key Specifications

Pinout & Package

TQFP-64 package with exposed thermal pad (PAP designation); 1 mm pitch, 10 mm × 10 mm body, 1.2 mm max height; θ_JA = 21.5°C/W.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-channel 12-bit ADC applications.

Compared with ADS2807Y, ADS2806Y offers identical performance in half the channel count and footprint, while AD9222ASTZ trades internal reference and CMOS outputs for higher speed and LVDS compatibility-making ADS2807Y optimal for cost-sensitive, self-contained dual-channel systems needing minimal external components.

Availability

ADS2807Y 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 and multi-year production cycles.

Supply support for ADS2807Y 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 with decades of ADC design heritage.

The ADS2807Y belongs to TI's high-speed precision ADC product line, engineered for demanding communications, instrumentation, and imaging applications where dynamic range, linearity, and deterministic latency are critical.

FAQ

What is the absolute maximum clock frequency supported by the ADS2807Y?

The ADS2807Y is characterized and specified for operation up to 50 MSPS. While the datasheet lists a minimum convert clock period of 20 ns (50 MHz), the device is not guaranteed beyond this rate. Exceeding 50 MSPS may result in degraded SFDR, increased DLE, or loss of no-missing-codes guarantee. For reliable operation, ADS2807Y must be used within its rated 50 MSPS sampling limit.

Does the ADS2807Y support single-ended analog input configurations?

Yes, the ADS2807Y supports both differential and single-ended analog inputs. In single-ended mode, one input (e.g., INA) receives the signal while the complementary input (INB) is biased to the required common-mode voltage (typically +2.5 V). The device maintains 66 dB SNR in this configuration, though SFDR degrades relative to differential operation due to reduced harmonic rejection.

How does the internal reference of the ADS2807Y affect system accuracy?

The ADS2807Y internal reference contributes ±1.5% FS gain error and ±1.0% FS zero error at 25°C, with drift of 66 ppm/°C (gain) and 16 ppm/°C (zero). These values are measured with internal reference enabled and define the baseline accuracy when no external reference is used. For higher precision, ADS2807Y supports external reference via REFTA/REFBA and REFTB/REFBB pins.

What is the function of the SEL and INT/EXT pins on the ADS2807Y?

The SEL pin selects full-scale input range: logic LOW configures 2 V_p-p, HIGH configures 3 V_p-p. The INT/EXT pin selects reference source: LOW enables internal reference (50 kΩ pull-up), HIGH enables external reference. Both pins are CMOS-compatible and sampled on power-up/reset; their states determine analog input scaling and reference topology for the entire ADS2807Y device.

Can the ADS2807Y operate with different logic supply voltages on Channel A and Channel B?

Yes, ADS2807Y supports independent logic driver supplies via VDRVA (pins 40) and VDRVB (pin 8). Each can be set to 3 V or 5 V, allowing Channel A outputs to interface with 3 V FPGA I/O while Channel B drives 5 V microcontroller inputs - reducing level-shifter count and improving noise isolation between domains.