VSP1221
- 12-Bit, 21-MSPS, Analog-to-Digital Converter
- Low Power: 70 mW Minimum Power-Down Mode: 4 mW
- Low Input-Referred Noise: 75-dB SNR Typical at 0-dB Gain
- Novel Optical-Black (OB) Calibration
- Low-Aperture Delay
- Single 3-V Supply Operation
- DNL: <±0.5 LSB and <±1.5 LSB Typical at 0-dB Gain
- Programmable-Gain Range: 0 dB to 36 dB, Gain Resolution of 0.05 dB/Step
- 48-Pin TQFP Package
- applications
- Digital Still Camera
- Digital Video Camera
The VSP1221 is a highly-integrated mixed-signal IC used for signal conditioning and analog-to-digital conversion at the output of a CCD array. The IC has a correlated double sampler (CDS) and an analog programmable-gain amplifier (PGA) stage followed by an analog-to-digital converter (ADC) and a digital PGA stage. The CDS is used to sample the CCD signal and is followed by the analog PGA stage. The ADC is a 12-bit, 21-MSPS pipelined ADC. The digital PGA provides further amplification.
Additionally, there is an offset calibration loop for optical-black correction. The optical-black reference level is user-programmable. The chip also has two eight-bit digital-to-analog converters (DAC) for external analog settings.
The chip has a serial port for configuring internal control registers.
The VSP1221 is available in a 48-pin TQFP package and operates from a single 3-V power supply.
技術資料
| 上位の文書 | タイプ | タイトル | フォーマットオプション | 最新の英語版をダウンロード | 日付 | |
|---|---|---|---|---|---|---|
| * | データシート | 12-Bit, 21-MSPS, UltraLow-Power CCD Signal Processor データシート (Rev. B) | 2014/04/16 |
設計と開発
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| パッケージ | ピン数 | CAD シンボル、フットプリント、および 3D モデル |
|---|---|---|
| TQFP (PFB) | 48 | Ultra Librarian |