Microchip has released two new families of 12-, 14- and 16-bit pipelined ADCs offering a maximum sampling rate of 200Msamples/s.
The MCP37DX1-200 and MCP372X1-200 families are notable for their very low power consumption – just 490mW when operating at 200Msamples/s. This figure includes the power required to drive the low voltage differential signalling I/O. Power saving modes bring down consumption dramatically : in Stand-by mode, the ADCs use 80mW, and just 33mW in Shut – down mode.
The 14- and 16-bit devices feature a Signal – to – Noise Ratio (SNR) of more than 74dB, and a Spurious Free Dynamic Range (SFDR) of more than 90dB. The 12-bit devices have an SNR of 71.3dB and an SFDR of 90dB.
With these specifications, the MCP37DX1-200 and MCP372X1-200 parts are able to capture precise measurements of fast input signals. The MCP37DX1-200 and MCP372X1-200 include various digital processing features that simplify system design, and reduce cost and power usage. The ADCs also include decimation filters for improved SNR, and provide for individual adjustment of phase, offset and gain. Fractional delay recovery enables time-delay corrections in multichannel modes.
An integrated digital down-converter is included in the MCP37DX1-200 family, making it ideal for communications applications. The 12-bit families include an integrated noiseshaping re-quantiser, which enables users to lower the noise within a given band of interest for improved accuracy and performance.
- Communications equipment
- Cellular base stations
- Ultrasound and sonar imaging equipment Scanners
- Data-acquisition systems
- Input channel bandwidth of 500Mhz
- Configuration via serial peripheral interface
- Operating temperature range: -40°C to 85°C