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OV7725-V28A Camera Sensor Replacement Options

Executive Recommendation

The OV7725-V28A / OV07725-V28A is effectively obsolete and there is no recommended active, mainstream, true drop-in replacement. A true drop-in would need the same 28-ball CSP2 footprint/ballout, same rails, same DVP timing, same SCCB register behavior, and compatible optics. I would not plan a new production build around this package.

Recommended path depends on how much redesign is acceptable:

No PCB change: buy genuine OV7725 old stock only; high lifecycle/counterfeit risk.
Small redesign while keeping DVP/parallel camera input: use a camera module based on OV7675, GC0308/GC032A, GC2145, or OV2640.
Robust 2026+ redesign: move to a modern supported sensor such as ST VD55G0, onsemi ARX383CS, onsemi AR0145, or onsemi AR0234CS, accepting MIPI/raw image pipeline changes.

OV7725-V28A Key Specs

Table

Parameter	OV7725-V28A / OV07725-V28A
Manufacturer	OmniVision / OMNIVISION
Type	Color CMOS VGA CameraChip sensor with internal ISP
Active resolution	640 × 480 VGA, 0.3 MP
Optical format	1/4 inch
Pixel size	6.0 µm × 6.0 µm
Frame rate	Up to 60 fps at full VGA
Output interface	Parallel digital video port / DVP
Data bus	8-bit YUV/RGB using D[9:2], or 10-bit raw using D[9:0]
Sync/control signals	PCLK, HREF/HSYNC, VSYNC
Control interface	SCCB, OmniVision I2C-like 2-wire control
Output formats	YUV/YCbCr 4:2:2, RGB565/555/444, raw RGB
Input clock	Typically 24 MHz; datasheet-class range around 10–48 MHz
Supply rails	Core about 1.8 V; analog about 3.0–3.3 V; I/O about 1.7–3.3 V depending configuration
Package	28-ball CSP2 / CSP-28, roughly 5.3 mm × 5.3 mm
Lifecycle	Obsolete/EOL in mainstream distributor listings

Drop-In Replacement Assessment

True Drop-In

No active, mainstream true drop-in replacement was found.

Table

Candidate	Drop-in?	Practicality	Notes
More OV7725-V28A / OV07725-V28A	Yes if genuine same suffix/package	Poor	Obsolete. Broker stock only; risk of counterfeit and poor traceability.
OV7720-V28A	Possible family-level candidate	Poor	Similar old OmniVision VGA DVP/SCCB sensor, but still requires register/image validation and is not a safe new production choice.

DVP / Parallel Redesign Options

These are closest if the host processor/FPGA already expects XCLK, PCLK, HREF/VSYNC, D[7:0], and SCCB/I2C-style control.

Table

Candidate	Resolution	Interface	Redesign level	Notes
OV7675 module	VGA 640 × 480	Parallel DVP + SCCB	Low–medium	Closest functional match; common module ecosystem. Usually not bare CSP drop-in.
GC0308 / GC032A module	VGA 640 × 480	Parallel DVP, module-dependent	Medium	Common low-cost VGA module path. Smaller optics/pixels; image quality and low-light differ from OV7725.
GC2145 module	2 MP, can output lower resolutions	DVP or MIPI depending module	Medium	More pixels than needed; often usable at VGA/QVGA output.
OV2640 module	2 MP	Parallel DVP + SCCB, often JPEG-capable	Medium	Very common ESP32-CAM ecosystem sensor; old but module supply remains broad.
OV5640 module	5 MP	DVP or MIPI depending module	Medium–high	Common module ecosystem, but overkill for VGA; check lifecycle carefully.

Best DVP Recommendation

If you want the least disruption and your host already captures DVP:

First choice: OV7675 module
Low-cost module alternative: GC032A / GC0308
Ecosystem alternative: OV2640 module

These require new module connector/footprint and firmware initialization changes.

Modern Supported Sensor Options

These are better long-term choices but are not drop-in. Most need MIPI CSI-2 or a raw image pipeline.

Table

Candidate	Resolution	Interface	Color?	Redesign level	Notes
ST VD55G0	VGA-class, 644 × 604 class	MIPI CSI-2 + I2C	Mono	High	Strong long-life VGA-class global-shutter option; requires MIPI host.
onsemi ARX383CS	VGA 640 × 480	MIPI CSI-2 + 2-wire control	Mono	High	Active VGA global-shutter option; good for tracking/robotics, not color.
onsemi AR0145	1 MP	MIPI CSI-2	Color/mono variants	High	Modern industrial choice, more resolution than needed.
onsemi AR0234CS	2.3 MP	MIPI and raw parallel variants	Color/mono variants	High	More modern industrial option; possible parallel raw path but not OV7725-like YUV ISP output.
OV7251 module	VGA 640 × 480	MIPI/LVDS module-dependent	Mono	High	Common tracking/SLAM global-shutter module, not color and not DVP-compatible.

Flux Library Findings

Flux library search did not find a direct OV7725 replacement, but did return some possible redesign candidates:

Table

Candidate	Flux part info	Compatibility note
MT9M114EBLSTCZ-CR	onsemi CMOS image sensor with embedded processor; 1296 × 976; 55-ODCSP; listed with Digi-Key and LCSC availability	Higher resolution, different package/interface; redesign required.
OV02735-H66A-1B	OmniVision image sensor, CSP-66, LCSC C114922	Higher resolution class; redesign required.
OV5640	OmniVision camera sensor with SCCB and 8/10-bit output formats	Common module ecosystem; not drop-in, but practical for DVP/module redesign.

Electrical and Firmware Redesign Impacts

Any replacement other than OV7725 old stock will likely require:

New PCB footprint or camera module connector
New lens/mechanical stack-up due to different optical format and optical center
Power rail changes, especially core/I/O/analog rail differences
Clocking changes: XCLK frequency, PLL settings, PCLK rate
Different SCCB/I2C register initialization table
Different output timing/polarity: PCLK edge, VSYNC/HREF polarity, blanking timing
Different color format and byte order
Possible ISP pipeline changes if moving from OV7725 YUV/RGB to raw Bayer or monochrome
Host interface change if moving to MIPI CSI-2

Suggested Decision

If this is a legacy board with no PCB changes allowed, source genuine OV7725-V28A only as a last-time-buy/broker-stock solution.
If you can do a moderate PCB/firmware update while preserving DVP, use an OV7675 camera module or OV2640 module.
If this is a new or long-life product, use a modern supported MIPI/global-shutter sensor such as ST VD55G0 or onsemi ARX383CS if monochrome is acceptable, or onsemi AR0145 / AR0234CS if color and industrial lifecycle matter more than direct compatibility.

Open Questions Before Selecting the Final Part

Is the design using the bare CSP sensor or a camera module/FPC?
Does the host require parallel DVP, or can it support MIPI CSI-2?
Is color required, or is monochrome/global-shutter acceptable?
Is VGA resolution enough, or can the host handle 1–2 MP sensors?
Do you need a mainstream distributor part, or is module-market sourcing acceptable?

Executive Recommendation
OV7725-V28A Key Specs
Drop-In Replacement Assessment
True Drop-In
DVP / Parallel Redesign Options
Best DVP Recommendation
Modern Supported Sensor Options
Flux Library Findings
Electrical and Firmware Redesign Impacts
Suggested Decision
Open Questions Before Selecting the Final Part