ADS803是TI公司的一款精密ADC(<=10MSPS)产品，ADS803是12 位 5MSPS ADC，具有 内部/外部基准、2 至 5Vpp 之间的灵活 I/P、超出范围指示信号和引脚兼容，本页介绍了ADS803的产品说明、应用、特性等，并给出了与ADS803相关的TI元器件型号供参考。
ADS803 - 12 位 5MSPS ADC，具有 内部/外部基准、2 至 5Vpp 之间的灵活 I/P、超出范围指示信号和引脚兼容 - 精密ADC(<=10MSPS) - 模数转换器 - TI公司（Texas Instruments，德州仪器）
The ADS803 is a high-speed, high dynamic range, 12-bit pipelined Analog-to-Digital (A/D) converter. This converter includes a high-bandwidth track-and-hold that gives excellent spurious performance up to and beyond the Nyquist rate. This high-bandwidth, linear track-and-hold minimizes harmonics and has low jitter, leading to excellent SNR performance. The ADS803 is also pin-compatible with the 10MHz ADS804 and the 20MHz ADS805.
The ADS803 provides an internal reference and can be programmed for a 2Vp-p input range for the best spurious performance and ease of driving. Alternatively, the 5Vp-p input range can be used for the lowest input referred noise of 0.09LSBs rms giving superior imaging performance. There is also a capability to set the input range in between the 2Vp-p and 5Vp-p input ranges or to use an external reference. The ADS803 also provides an over-range indicator flag to indicate an input range that exceeds the full-scale input range of the converter. This flag can be used to reduce the gain of the front-end gain-ranging circuitry.
The ADS803 employs digital error-correction techniques to provide excellent differential linearity for demanding imaging applications. Its low distortion and high SNR give the extra margin needed for communications, medical imaging, video, and test instrumentation applications. The ADS803 is available in an SSOP-28 package.
- HIGH SFDR: 82dB at NYQUIST
- HIGH SNR: 69dB
- LOW POWER: 115mW
- LOW DLE: 0.25LSB
- FLEXIBLE INPUT RANGE
- OVER-RANGE INDICATOR
- APPLICATIONS
- IF AND BASEBAND DIGITIZATION
- CCD IMAGING SCANNERS
- TEST INSTRUMENTATION
