Texas Instruments OPT8320NBP

Overview

OPT8320NBP from Texas Instruments is a 3D time-of-flight (ToF) sensor system-on-chip (SoC) for depth sensing, featuring an 80 × 60 pixel array, 30 µm pixel pitch, scalable frame rate up to 1000 FPS depth output, integrated illumination driver, and on-chip depth engine computing phase, amplitude, and ambient per pixel. It is used in industrial machine vision systems requiring real-time spatial mapping under varying ambient light.

For engineers reviewing the OPT8320NBP datasheet, OPT8320NBP pinout, OPT8320NBP application, or OPT8320NBP equivalent, key selection considerations include its COG-56 package with optical band-pass filter (830–867 nm), dual-output interface (DVP/SSI), programmable timing generator for motion robustness and SNR optimization, and built-in histogram and calibration support for production-grade depth accuracy.

Technical Context

The OPT8320NBP integrates a timing generator (TG) supporting master/slave sync modes, de-aliasing, high dynamic range via alternate-frame integration scaling, and configurable quad/sub-frame sequencing. Its depth engine computes full-array phase data plus auxiliary amplitude, ambient, and flag outputs - all derived from digitized sensor data without external processing.

It uses a dedicated 24-MHz system clock input (MCLK), supports modulation frequencies from 10 MHz to 100 MHz, and delivers raw ToF data via an 8-lane DVP interface (HD/VD synchronized) or 1-lane SSI. The integrated illumination driver provides up to 150 mA at up to 100 MHz, with PWM control (ILLUM_PWM_CTRL/ILLUM_PWM_SYNC) and feedback (ILLUM_FB) for closed-loop power management.

Key Specifications

Pinout & Package

OPT8320NBP is housed in a 56-pin Chip-on-Glass (COG) package measuring 8.03 mm × 5.32 mm × 0.745 mm, with integrated optical band-pass filter and fiducials for precise alignment. The exposed thermal pad is non-soldered and must remain electrically isolated.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 3D ToF sensor applications.

Compared with OPT8320NBP, OPT8241 offers higher resolution but demands more board area and external components, while IRS2877C reduces design complexity at the expense of configurability and environmental ruggedness - making OPT8320NBP the optimal balance for industrial and interactive embedded depth sensing.

Availability

OPT8320NBP is available at Aetrix Electronics and suitable for industrial machine vision, gesture-controlled kiosks, and 3D scanning applications requiring stable component supply, long-term manufacturability, and consistent optical calibration across production batches.

Supply support for OPT8320NBP 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 company specializing in analog, embedded processing, and sensing technologies, with leadership in industrial, automotive, and communications markets.

The OPT8320NBP belongs to TI's 3D ToF image sensor family, designed specifically for compact, low-power, high-robustness depth sensing in embedded systems where optical integration, ambient immunity, and real-time processing efficiency are critical.

FAQ

What is the maximum frame rate supported by the OPT8320NBP for depth output?

The OPT8320NBP supports a scalable depth output rate up to 1000 FPS, achieved through internal raw frame capture at 4000 FPS and on-chip depth engine processing. This maximum rate assumes full 80×60 array readout, minimal integration time, and DVP interface operation at rated timing margins. Actual sustained frame rate depends on host interface bandwidth and configured ROI size.

Does the OPT8320NBP require an external illumination source?

No, the OPT8320NBP includes a built-in illumination driver capable of delivering up to 150 mA at frequencies up to 100 MHz, sufficient to drive common VCSEL arrays directly. It also provides ILLUM_EN, ILLUM_N/P, ILLUM_PWM_CTRL, and ILLUM_FB pins for precise control and closed-loop regulation - eliminating the need for external driver ICs in most implementations.

How does the OPT8320NBP handle ambient light interference?

The OPT8320NBP combats ambient light via three integrated mechanisms: (1) an on-glass 830–867 nm optical band-pass filter rejecting out-of-band IR; (2) programmable integration timing and de-aliasing frame structures to suppress motion artifacts and harmonic noise; and (3) per-pixel ambient measurement used by the depth engine for real-time background subtraction - all implemented without host processor involvement.

What interface options does the OPT8320NBP provide for depth data output?

The OPT8320NBP offers two configurable output interfaces: an 8-lane Digital Video Port (DVP) with HD/VD synchronization for high-throughput parallel transfer, and a Synchronous Serial Interface (SSI) with single-data-lane, clock, and chip-select for pin-constrained designs. Both interfaces deliver identical depth, amplitude, and ambient data - with SSI offering deterministic timing and lower EMI at the cost of reduced bandwidth.

Is the OPT8320NBP compatible with standard I2C controllers for configuration?

Yes, the OPT8320NBP implements a standard I2C slave interface (I2C_SLV_SCL/I2C_SLV_SDA) operating at up to 400 kHz, allowing direct connection to any microcontroller or SoC with I2C hardware. Configuration registers control all key parameters including timing generator settings, region-of-interest, integration duty cycle, and depth engine behavior - with no proprietary protocol required.