Description

The 31-6501 is a monolithic, dual-channel, 1.8 V supply, 12-bit, 20 MSPS/40 MSPS/65 MSPS/80 MSPS analog-to-digital converter (ADC) designed for electronic component applications. It features a high performance sample-and-hold circuit and on-chip voltage reference.

Specifications and features

• 1.8 V analog supply operation
• 1.8 V to 3.3 V output supply
• Signal-to-Noise Ratio (SNR): 71.3 dBFS at 9.7 MHz input, 69.0 dBFS at 200 MHz input
• Spurious-Free Dynamic Range (SFDR): 93 dBc at 9.7 MHz input, 83 dBc at 200 MHz input
• Low power consumption: 32 mW per channel at 20 MSPS, 71 mW per channel at 80 MSPS
• Differential input with 700 MHz bandwidth
• On-chip voltage reference and sample-and-hold circuit
• 2 V p-p differential analog input
• Differential Nonlinearity (DNL): ±0.40 LSB
• Serial port control options: Offset binary, gray code, or twos complement data format
• Optional clock duty cycle stabilizer
• Integer 1-to-8 input clock divider
• Data output multiplex option
• Built-in selectable digital test pattern generation
• Energy-saving power-down modes
• Data clock out with programmable clock and data alignment

Application Scenarios

The 31-6501 is suitable for a wide range of electronic component applications, including:

• Communications
• Diversity radio systems
• Multimode digital receivers
• GSM, EDGE, W-CDMA, LTE, CDMA2000, WiMAX, TD-SCDMA
• I/Q demodulation systems
• Smart antenna systems
• Battery-powered instruments
• Hand held scope meters
• Portable medical imaging
• Ultrasound
• Radar/LIDAR

Comparison

• High performance sample-and-hold circuit
• On-chip voltage reference
• Wide input bandwidth
• Low power consumption
• Flexible serial port control options
• Data output multiplex option

• Requires a 1.8 V analog supply
• Higher power consumption at higher sample rates