WM8235GEFL/V - 16-Bit 9-Channel 70 MSPS AFE | Cirrus Logic
Teilenummer: WM8235GEFL/V ✓ AktivWM8235GEFL/V Übersicht
An analog front end is an integrated signal-processing IC positioned between an imaging sensor and a digital image processor. Within the broader integrated-circuit hierarchy, an AFE is a data-acquisition component combining analog conditioning, sampling, and digital conversion. The WM8235 performs nine parallel sensor signal paths, allowing a scanner, copier, or imaging module to digitize multiple outputs while maintaining coordinated timing.
Each of the nine analog channels includes reset-level clamping, correlated double sampling or sample-and-hold, programmable gain, automatic gain control, and offset adjustment. These functions allow the WM8235GEFL/V to condition sensor outputs before conversion. The device supports a 16-bit conversion resolution and can process sensor signals at pixel sample rates up to 23 MSPS per channel, according to the manufacturer datasheet.
The WM8235 family also generates the sensor timing signals required to transfer charge and reset information from the imaging array. Programmable timing, channel-level signal conditioning, and integrated digitization reduce the number of external analog components needed around a sensor. Output data can be delivered through LVDS or CMOS interfaces, providing configuration flexibility for different imaging systems and downstream processors.
Typical applications include flat-panel scanners, document copiers, multifunction printers, contact image scanners, and other CCD- or CIS-based imaging equipment. Its 9-channel architecture is particularly useful when an imaging module presents several sensor outputs that must be sampled consistently. The 3.3 V operating range also simplifies integration with contemporary 3.3 V digital systems.
PCB design should provide a low-impedance analog and digital ground structure, place decoupling capacitors close to the supply pins, and use controlled-impedance routing for high-speed CMOS or LVDS outputs. The exposed pad requires a thermal and electrical land pattern specified by the manufacturer datasheet; it must not be treated as an unused mechanical feature.
This page combines the WM8235GEFL/V device specifications, verified manufacturer and distributor listings, package information, application guidance, and engineering design notes. It also distinguishes documented device functions from sourcing questions so engineers can evaluate the AFE quickly and consult the manufacturer datasheet for implementation details.
Drop-in-Alternativen für WM8235GEFL/V – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Für dieses Produkt sind keine Drop-in-Alternativen verfügbar.
Alternativen anfordernWM8235GEFL/V Grenzwerte & elektrische Eigenschaften
| Device Type | 9-channel analog front end and digitizer |
| ADC Resolution | 16 bit |
| Number of Channels | 9 channels |
| Maximum Sample Rate | 70 MSPS |
| Maximum Pixel Sample Rate per Channel | 23 MSPS |
| Analog Supply Voltage | 2.97 V to 3.63 V |
| Digital Supply Voltage | 2.97 V to 3.63 V |
| Data Output Interface | LVDS or CMOS |
| Sensor Timing Generation | Supported |
| Channel Functions | Reset-level clamping, correlated double sampling or sample-and-hold, programmable gain, AGC, and offset adjustment |
| Gehäuse | 56-VFQFN exposed pad, 7 mm x 7 mm |
| Montageart | Surface mount |
| Terminal Count | 56 terminals |
| Temperature Grade | Industrial |
| Lebenszyklusstatus | Active |
| Supply Type | Single 2.97 V to 3.63 V analog and digital supply range |
WM8235GEFL/V 56-vfqfn exposed pad, 7 mm x 7 mm Pinbelegungsleitfaden
Pinbelegung für WM8235GEFL/V (56-vfqfn exposed pad, 7 mm x 7 mm-Gehäuse). Dieses analoge Bauteil verfügt über Eingangs-, Ausgangs- und Versorgungspins. Offset-Null-, Kompensations- und Enable-Pin-Konfigurationen entnehmen Sie dem Herstellerdatenblatt. Ideal für Signalaufbereitung und Verstärkerschaltungen.
Keine detaillierten Pinbelegungsdaten verfügbar für WM8235GEFL/V.
Siehe die Datenblatt für die vollständige Pin-Konfiguration.
Typische Anwendungen
WM8235GEFL/V ist geeignet für 6 Anwendungs: Flat-Panel CCD Scanner, Contact Image Sensor Interface, Document Scanner Imaging, Multifunction Printer Scanner Module, Industrial Line-Scan Imaging, Optical Inspection Equipment.
Flat-Panel CCD Scanner
The WM8235GEFL/V fits flat-panel scanner front ends because it digitizes nine CCD output channels in parallel while adding the conditioning functions required for imaging signals. According to the manufacturer datasheet, every channel includes reset-level clamping, correlated double sampling or sample-and-hold, programmable gain, automatic gain control, and offset adjustment. At up to 23 MSPS per channel, it supports higher-rate pixel transfer while sensor timing generation coordinates the array. Use the device near the CCD outputs, provide dedicated decoupling at the 2.97 V to 3.63 V supply pins, and route the selected LVDS or CMOS interface to the image processor with controlled impedance.
Empfohlen
Contact Image Sensor Interface
The WM8235GEFL/V is appropriate for contact image sensor modules that require multiple analog channels to be conditioned and digitized in a compact assembly. Its nine channels provide parallel programmable-gain, automatic-gain-control, offset-adjustment, and correlated-double-sampling functions, allowing channel behavior to be matched to the CIS output characteristics. The manufacturer datasheet identifies operation up to 23 MSPS per channel, while the family supports up to 70 MSPS. This integration reduces the need for separate amplifiers and sampling networks. Place the AFE close to the sensor connector, keep sensitive analog traces short, and follow the manufacturer layout for the exposed pad and high-speed data outputs.
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Document Scanner Imaging
The WM8235GEFL/V supports document-scanner imaging systems that combine a linear CCD array with high-speed parallel digitization. Its 16-bit conversion resolution preserves amplitude detail, while the nine-channel architecture can handle multiple sensor outputs under a common timing regime. According to the manufacturer datasheet, integrated sensor timing generation coordinates sensor reset and sampling, and programmable gain, AGC, offset adjustment, and correlated double sampling simplify per-channel calibration. Use a low-noise sensor and power arrangement to avoid degrading the 16-bit signal path, and confirm output timing with the downstream image processor before selecting the LVDS or CMOS interface mode.
Empfohlen
Multifunction Printer Scanner Module
The WM8235GEFL/V can serve as the imaging AFE in a multifunction-printer scanner module where multiple CCD outputs must be digitized within a compact mechanical enclosure. Its 9-channel processing architecture, 16-bit resolution, and integrated timing generation reduce the external analog-interface component count. According to the manufacturer datasheet, the device supports up to 23 MSPS per channel and provides automatic gain control, offset adjustment, programmable gain, and correlated double sampling. These features support calibration across sensor channels and operation with changing illumination. Pay particular attention to ground partitioning, exposed-pad heat removal, and connector placement because scanner modules often combine high-speed data routing with sensitive analog signals.
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Industrial Line-Scan Imaging
The WM8235GEFL/V is suitable for industrial line-scan imaging systems that digitize multiple CCD channels at coordinated sample rates. The 70 MSPS family capability and 23 MSPS per-channel pixel-rate capability provide flexibility for machine-vision and inspection equipment, subject to the sensor’s own timing requirements. Integrated timing generation simplifies synchronization, while correlated double sampling, programmable gain, AGC, and offset adjustment reduce external calibration circuitry. The LVDS or CMOS output choice should match the downstream processor and cable or board-channel requirements. For production designs, evaluate channel skew, output timing margins, thermal performance of the exposed pad, and signal integrity across every supported interface mode.
Empfohlen
Optical Inspection Equipment
The WM8235GEFL/V fits optical inspection equipment requiring repeatable capture from multi-output CCD or contact image sensor arrays. Its 16-bit digitization, programmable gain, automatic gain control, and per-channel offset adjustment support systems that must preserve small signal differences across changing light levels. According to the manufacturer datasheet, integrated sensor timing generation coordinates the imaging array, while the nine channels can operate in parallel for fast scanning. The 2.97 V to 3.63 V supply range simplifies integration with 3.3 V interface electronics. Design the analog section with short sensor connections, clean return paths, and careful exposed-pad grounding, and verify output timing and channel skew with representative sensor loads.
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Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für WM8235GEFL/V – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt |
|---|---|
| Brand | Cirrus Logic |
| Package | 56-VFQFN exposed pad, 7 mm x 7 mm |
| ADC Resolution | 16 bit |
| Number of Channels | 9 channels |
| Maximum Sample Rate | 70 MSPS |
| Maximum Pixel Sample Rate per Channel | 23 MSPS |
| Analog Supply Voltage | 2.97 V to 3.63 V |
| Digital Supply Voltage | 2.97 V to 3.63 V |
| Data Output Interface | LVDS or CMOS |
| Sensor Timing Generation | Supported |
| Temperature Grade | Industrial |
| Lifecycle Status | Active |
Designhinweise
Place the WM8235GEFL/V close to the CCD or CIS outputs and keep each analog input route short and symmetric. Route the 2.97 V to 3.63 V supplies through separate analog and digital distribution paths, with local high-frequency decoupling placed at the relevant supply pins. Follow the manufacturer layout for analog and digital grounding so switching currents from the processor and output circuitry do not pass through the sensor signal reference.
Use the manufacturer pin table and interface timing information to select and route either LVDS or CMOS outputs. Preserve the intended trace geometry and reference plane through the package escape, connector, and processor interface. For LVDS, verify the recommended termination and differential pair spacing; for CMOS, account for edge rate, loading, and channel-to-channel skew. Validate the final layout with the target sensor because the usable image rate also depends on output timing and downstream processing.
Treat the 56-VFQFN exposed pad as both a thermal path and an electrical connection. Implement the manufacturer-recommended pad and via geometry, connect it to the appropriate ground plane, and avoid placing a keepout beneath the pad that would isolate heat flow. Estimate junction temperature from actual power dissipation, ambient temperature, and the package thermal data before fixing the maximum operating rate; use the exposed-pad copper area to spread heat into the PCB.
Do not treat the WM8235GEFL/V and WM8235GEFL/RV suffixes as automatically interchangeable in a released BOM. Confirm tray versus reel packaging, order quantity, temperature grade, and assembly method before substitution. Also avoid assuming that a lower sensor clock is automatically acceptable: programmed gain, AGC behavior, offset calibration, sensor timing, and output mode must remain compatible with the original imaging system.
Compliance-Informationen
The WM8235GEFL/V is an industrial-grade imaging AFE for CCD and CIS systems; no automotive qualification was identified. RoHS, REACH, lead-free, halogen-free, and conflict-minerals declarations require confirmation from the manufacturer or the relevant declaration documents.
