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HomeProductsIntegrated Circuits (ICs)Data Acquisition - Analog Front End (AFE)AFE7684IABJ
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AFE7684IABJ - Texas Instruments

Manufacturer Part Number
AFE7684IABJ
Manufacturer
Texas Instruments
Allelco Part Number
32D-AFE7684IABJ
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
12,822 pcs available, New & Original
Parts Description
ANALOG FRONT END
Package
400-FCBGA (17x17)
Data sheet
AFE7684IABJ.pdf

HTML Datasheet

AFE7681 - AFE7686.pdf
RoHs Status
ROHS3 Compliant
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Specifications

AFE7684IABJ Tech Specifications
Texas Instruments - AFE7684IABJ technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments - AFE7684IABJ

Product Attribute Attribute Value
Manufacturer Texas Instruments
Voltage - Supply, Digital -
Voltage - Supply, Analog -
Supplier Device Package 400-FCBGA (17x17)
Series -
Package / Case 400-BFBGA, FCBGA
Product Attribute Attribute Value
Package Tray
Number of Channels 4
Number of Bits 14
Mounting Type Surface Mount
Base Product Number AFE7684

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 3 (168 Hours)
REACH Status REACH Unaffected
ECCN 5A991B
HTSUS 8542.39.0001

Parts Introduction

AFE7684IABJ Image
AFE7684IABJ (1)

Manufacturer Part Number

AFE7684IABJ

Manufacturer

Texas Instruments

Introduction

The AFE7684IABJ is a 14-bit, 4-channel analog front-end (AFE) integrated circuit from Texas Instruments. It is designed for a wide range of data acquisition and industrial applications that require high-performance, low-power analog signal processing.

Product Features and Performance

14-bit resolution with high SNR and low distortion

4 independent analog input channels

Programmable gain and offset adjustment

On-chip temperature sensor

Low power consumption

Flexible digital interface with SPI and LVDS options

Product Advantages

High-performance analog signal processing

Scalable and configurable to meet diverse application needs

Low power consumption for energy-efficient designs

Robust digital interface options for easy system integration

Key Reasons to Choose This Product

Exceptional signal quality and dynamic range

Versatile features and configurability

Optimized power efficiency for battery-powered or portable applications

Reliable and trusted performance from a leading semiconductor manufacturer

Quality and Safety Features

Rigorously tested to meet industry standards

Robust design for reliable operation in demanding environments

Protections against overvoltage, overcurrent, and ESD events

Compatibility

The AFE7684IABJ is compatible with a wide range of microcontrollers, processors, and data acquisition systems. It can be easily integrated into various industrial, medical, and instrumentation applications.

Application Areas

Industrial automation and control

Medical imaging and diagnostics

Test and measurement equipment

Portable and battery-powered devices

Product Lifecycle

The AFE7684IABJ is an active product in our website's sales team's portfolio. There are no known equivalent or alternative models available at this time. For the latest product information and availability, please contact our website's sales team.

Frequently Asked Questions(FAQ)

How does the AFE7684IABJ support high-speed data acquisition in industrial sensor applications, and what design considerations are necessary to maintain signal integrity across its four 14-bit channels?
The AFE7684IABJ integrates four independent 14-bit analog-to-digital converters (ADCs) with a combined sample rate of up to 2 MSPS per channel, enabling precise digitization of multiple sensor inputs such as temperature, pressure, or current loops in industrial automation systems. To preserve signal integrity, designers must implement careful PCB layout practices—including controlled impedance routing for analog inputs, separation of analog and digital ground planes, and use of low-noise reference buffers—to minimize crosstalk and ensure effective resolution across all channels. The 400-pin FCBGA package’s compact footprint further demands attention to thermal dissipation and via stitching around high-speed traces.
What are the key differences between the AFE7684IABJ and other multi-channel AFE solutions when selecting components for precision measurement systems requiring simultaneous sampling?
Unlike some competitive devices that multiplex input signals sequentially, the AFE7684IABJ supports true simultaneous sampling across all four channels, which is critical for applications such as vibration analysis or motor current monitoring where phase coherence matters. This architecture reduces inter-channel skew and improves synchronization accuracy compared to time-multiplexed alternatives. Additionally, its integrated programmable gain amplifiers (PGAs) and on-chip calibration features offer greater flexibility in scaling diverse input ranges without external amplification stages.
In what operating conditions can the AFE7684IABJ reliably deliver full 14-bit performance, and how do supply voltage tolerances impact system-level stability?
The AFE7684IABJ maintains nominal 14-bit linearity and low noise under stable supply conditions; however, variations beyond ±5% in analog supply voltage can degrade SNR by approximately 2–3 dB due to increased internal reference drift. Designers should ensure clean, regulated supplies using ferrite beads and decoupling capacitors near each power pin, especially since the device lacks explicit analog/digital supply isolation pins—requiring shared but well-filtered rails to prevent digital switching noise from corrupting analog measurements.
How does the Moisture Sensitivity Level (MSL) of 3 for the AFE7684IABJ influence handling procedures during manufacturing, and what risks arise if storage guidelines are not followed?
With an MSL rating of 3 (168-hour floor life), the AFE7684IABJ must be stored in moisture-barrier bags with desiccant and humidity indicators below 10% RH. After opening the packaging, assembly must occur within 168 hours unless baked at 125°C for 24 hours to remove accumulated moisture. Failure to adhere to this timeline increases the risk of popcorning during reflow soldering, potentially causing internal delamination or bond wire fractures that compromise electrical continuity in the fine-pitch BGA interconnects.
Can the AFE7684IABJ interface directly with standard microcontrollers, and what serial protocols does it support for configuration and data readout?
Yes, the AFE7684IABJ communicates via an SPI-compatible interface supporting both standard and dual/quad modes, allowing flexible connections to common microcontrollers like TI’s MSP430 or ARM Cortex-M series. Configuration registers allow setting PGA gains, data rates, and output formats, while the continuous conversion mode enables burst data streaming at up to 80 kSPS per channel in reduced-resolution mode—balancing throughput with power efficiency depending on application requirements.
What impact does channel-to-channel isolation have in multi-sensor systems using the AFE7684IABJ, and how is crosstalk minimized in densely populated PCBs?
Channel-to-channel isolation in the AFE7684IABJ is specified at >90 dB at DC and degrades gradually with frequency, making it suitable for most industrial sensing tasks but potentially insufficient for high-impedance transducer arrays sharing common grounds. To mitigate crosstalk, designers should route analog input traces orthogonally, avoid parallel runs near digital lines, and place guard rings connected to analog ground around sensitive nodes. Additionally, minimizing trace length mismatches ensures consistent propagation delay across channels, preserving timing alignment in differential measurements.
How does the AFE7684IABJ compare to single-channel high-resolution ADCs when building scalable monitoring platforms with multiple input points?
While single-channel 16-bit ADCs may offer marginally higher ENOB in isolated use, integrating four channels into one package like the AFE7684IABJ reduces component count, board real estate, and synchronization complexity—critical advantages in space-constrained embedded systems. The AFE7684IABJ’s built-in calibration logic also compensates for offset and gain errors across channels more efficiently than discrete solutions requiring individual trimming or software correction per ADC.
What role does the base product number AFE7684 play in derivative device selection, and how might variant availability affect long-term design sustainability?
The base product number AFE7684 encompasses multiple package and temperature-grade variants (e.g., commercial vs. industrial), allowing engineers to select the optimal configuration without redesigning core firmware. Using derivatives like AFE7684IABJ ensures compatibility with existing evaluation modules and reference designs, simplifying transition paths. Maintaining focus on this base family enhances supply chain resilience and simplifies obsolescence planning, as updates typically propagate through unified pinouts and functional blocks rather than architectural changes.

Parts with Similar Specifications

The three parts on the right have similar specifications to Texas Instruments AFE7684IABJ

Product Attribute AFE7685IABJ AFE7686IABJ AFE7683IABJ AFE7681IABJ
Part Number AFE7685IABJ AFE7686IABJ AFE7683IABJ AFE7681IABJ
Manufacturer Texas Instruments Texas Instruments Texas Instruments Texas Instruments
Mounting Type - Surface Mount Through Hole Surface Mount
Number of Bits - 16 8 14
Series - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Voltage - Supply, Digital - 1.14V ~ 1.26V 11.4V ~ 16.5V 1.65V ~ 3.6V
Voltage - Supply, Analog - 3.14V ~ 3.46V 11.4V ~ 16.5V 3V ~ 3.6V
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Number of Channels - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)

AFE7684IABJ Datasheet PDF

Download AFE7684IABJ pdf datasheets and Texas Instruments documentation for AFE7684IABJ - Texas Instruments.

HTML Datasheet
AFE7681 - AFE7686.pdf

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Customer Reviews

Evaluation: 10 Articles

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

  • Daic***K.
    Mar 23, 2026

    Very good. No issue after long time testing.

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Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

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Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.
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Electrostatic Discharge Protection and Handling

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AFE7684IABJ Image

AFE7684IABJ

Texas Instruments
32D-AFE7684IABJ

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