AD9643-250 14-Bit, 170/210/250 MSPS, 1.8 V Dual Analog-to-Digital Converter (ADC)
The AD9643 is a dual, 14-bit analog-to-digital converter (ADC) with sample rates up to 250 MSPS designed to provide a solution for low cost, small size, wide bandwidth, versatile communication applications.
This dual ADC uses a multistage, differential pipelined architecture with integrated output error correction logic. Each ADC has wide bandwidth inputs that support a variety of user-selectable input ranges. An integrated reference simplifies design. A duty cycle stabilizer can be used to compensate for fluctuations in the ADC clock duty cycle, allowing the converter to maintain excellent performance.
ADC output data is routed directly to two external 14-bit LVDS output ports formatted as interleaved or channel multiplexed.
Flexible shutdown options can significantly reduce power consumption when needed.
Setup and control programming is accomplished using a 3-wire SPI-compatible serial interface.
The AD9643 is available in a 64-lead LFCSP package and is specified over the industrial temperature range of −40°C to +85°C.
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-correspondence
- Diversity radio system
- Multi-mode digital receiver (3G)
TD-SCDMA、WiMax、WCDMA
CDMA2000、GSM、EDGE、LTE
- I/Q demodulation system
- Smart antenna system
- Universal software radio
- Ultrasound equipment
- Broadband data applications
Product Focus
- Integrated dual, 14-bit, 170/210/250 MSPS ADC.
- Operates from a single 1.8V supply and the digital output driver operates from a separate supply to support LVDS outputs.
- Patented differential inputs maintain excellent signal-to-noise ratio (SNR) performance at input frequencies up to 300 MHz.
- SYNC input enables synchronization between multiple devices.
- A 3-wire, 1.8V SPI port is available for register programming and register readback.
- Pin compatible with the AD9613, 14-bit products can be easily converted to 12-bit products
Features and benefits
SNR：71.5 dBFS（185 MHz Ain、250 MSPS）
SFDR：87 dBc（185 MHz Ain、250 MSPS）
Input noise: -152.0 dBFS/Hz (200 MHz, -1dBFS Ain, 250MSPS)
Total power consumption: 785 mW at 250 MSPS
Microchip Centennial Electronic Technology (Shenzhen) Co., Ltd
Address: Shenzhen Futian District Huaqiang Road Huaqiang Plaza A Block 13H
Tel: 0755-83591082
Fax: 0755-83591083
Q Q：1051085817
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