Texas Instruments ADS807E/1K

Overview

ADS807E/1K from Texas Instruments is a 12-bit, 53-MHz pipelined analog-to-digital converter (ADC) with differential track-and-hold, internal/external reference selection, and 3-state digital outputs. It delivers 82 dB spurious-free dynamic range at 10 MHz input and 69 dB SNR at 3 V_p-p full-scale, targeting high-fidelity IF sampling in communications base stations and medical imaging systems.

For engineers reviewing the ADS807E/1K datasheet, ADS807E/1K pinout, ADS807E/1K application, or ADS807E/1K equivalent, this page provides verified technical context, SSOP-28 package mapping, real-world interface constraints (e.g., 6-cycle latency, ±0.5 LSB DNL), and two validated alternative ADCs for undersampling and imaging use cases.

Technical Context

The ADS807E/1K employs a 12-stage pipelined CMOS architecture with on-chip digital error correction logic to guarantee no missing codes and ±0.5 LSB typical DNL across temperature. Its differential track-and-hold supports both differential and single-ended analog inputs, with common-mode voltage output (CM pin) enabling self-biased driver configurations.

Timing is governed by a rising-edge–triggered convert clock with 6-clock-cycle data latency and 2 ns aperture delay. The device integrates internal reference buffers (REFT/REFB), FSSEL-controlled full-scale range selection (2 V_p-p or 3 V_p-p), over-range flag (OTR), and output enable (OE) for board-level multiplexing-enabling direct integration into multichannel acquisition systems without external support circuitry.

Key Specifications

Pinout & Package

ADS807E/1K is housed in a 28-pin SSOP (Shrink Small Outline Package) with 0.65 mm pitch, JEDEC MO-153 compliant, θ_JA = 50°C/W. Pin 1 is located at the top-left corner when viewed from the top with the index mark oriented left.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed, 12-bit ADC applications.

Compared with ADS807E/1K, ADS802E/1K trades speed and feature set for power efficiency, while ADS830E/1K extends SFDR performance at higher power and cost-making ADS807E/1K the balanced choice for 40–53 MSPS IF digitization with integrated biasing and diagnostics.

Availability

ADS807E/1K is available at Aetrix Electronics and suitable for communications base stations, medical imaging subsystems, and automated test equipment requiring stable component supply across extended product lifecycles.

Supply support for ADS807E/1K 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 expertise in high-performance data converters and signal chain solutions.

The ADS807E/1K belongs to TI's high-speed precision ADC product line, designed specifically for demanding IF sampling, imaging, and instrumentation applications where dynamic range, linearity, and integrated reference/biasing are critical.

FAQ

What is the maximum sampling rate supported by the ADS807E/1K?

The ADS807E/1K supports a maximum sampling rate of 53 million samples per second (MSPS), as confirmed in its electrical characteristics table under "Conversion Characteristics." This rate is achievable across the full specified temperature range (–40°C to +85°C) with proper power supply decoupling and clock signal integrity. At 53 MSPS, the ADS807E/1K maintains 82 dB SFDR at 10 MHz input frequency and 67.5 dB SNR with 2 V_p-p input range.

Does the ADS807E/1K include an internal voltage reference?

Yes, the ADS807E/1K integrates a precision bandgap-based internal reference with selectable full-scale ranges of 2 V_p-p or 3 V_p-p, controlled by the FSSEL pin. When INT/EXT is pulled LOW, internal reference buffers drive REFT and REFB pins, delivering stable +3.0 V / +2.0 V (2 V mode) or +3.25 V / +1.75 V (3 V mode). The ADS807E/1K datasheet confirms ±10 mV tolerance on REFT/REFB under these conditions.

How does the over-range indicator (OTR) function in the ADS807E/1K?

The OTR pin on the ADS807E/1K is an active-high, open-drain output that asserts when the analog input exceeds the selected full-scale range (2 V_p-p or 3 V_p-p). It operates independently of clock timing and responds within 2 ns of overdrive, as specified in the timing diagram and absolute maximum ratings. This flag is intended for real-time gain control loop feedback-e.g., reducing front-end amplifier gain before clipping occurs-and is electrically compatible with standard 3.3 V or 5 V logic interfaces.

What package type is used for the ADS807E/1K, and what are its thermal characteristics?

The ADS807E/1K is packaged in a 28-pin SSOP (Shrink Small Outline Package) with 0.65 mm lead pitch, designated DB in TI's ordering nomenclature. Its thermal resistance is θ_JA = 50°C/W under standard JEDEC JESD51-2 conditions. At maximum power dissipation of 390 mW (internal reference, V_DRV = 5 V), junction temperature rise above ambient is ≤19.5°C-enabling reliable operation in +85°C ambient environments without forced airflow, provided adequate PCB copper area is allocated for heat spreading.

Can the ADS807E/1K operate with a single-ended analog input?

Yes, the ADS807E/1K supports single-ended operation: one analog input (IN or IN) receives the signal while the other is biased to the common-mode voltage (CM pin output ≈+2.5 V). The datasheet confirms this mode yields 62 dB SFDR at 10 MHz (vs. 82 dB differential), with SNR maintained at 67 dB. Single-ended use reduces circuit complexity but sacrifices harmonic rejection and dynamic range-making it appropriate for time-domain applications like video digitizing where phase coherence is less critical than interface simplicity.