LM97593 双路 ADC / 数字调谐器 / AGC

The LM97593 Dual ADC / Digital Tuner / AGC IC is a two channel digital downconverter (DDC) with integrated 12-bit analog-to-digital converters (ADCs) and automatic gain control (AGC). The LM97593 further enhances National’s Diversity Receiver Chipset (DRCS) by integrating a wide-bandwidth dual ADC core with the DDC. The complete DRCS includes one LM97593 Dual ADC / Digital Tuner / AGC and two CLC5526 digitally controlled variable gain amplifiers (DVGAs). This system allows direct IF sampling of signals up to 300MHz for enhanced receiver performance and reduced system costs. A block diagram for a DRCS-based narrowband communications system is shown in .

The LM97593 offers high dynamic range digital tuning and filtering based on hard-wired digital signal processing (DSP) technolog

	LM97593
Internal ADC Resolution	12 Bits
Sample Rate	65 MSPS
SNR (fIN = 250MHz, 11-bit, Nyquist)	62 dBFS (typ)
SNR (fIN = 250MHz, 200kHz)	83 dBFS (typ)
SFDR (fIN = 250MHz, 11-bit, Nyquist)	68 dBFS (typ)
Full Power Bandwidth	650 MHz (typ)
Power Consumption (65MSPS)	560 mW (typ)

LM97593 特性

100% Software compatible with the CLC5903
Pin compatible with the CLC5903 except for the analog input and reference section
123 dB dynamic range with CLC5526 DVGA (200kHz)
On-chip precision reference
User Programmable AGC with enhanced Power Detector
Channel Filters include a Fourth Order CIC followed by 21-tap and 63-tap Symmetric FIRs
Flexible output formats
Serial and Parallel output ports
JTAG Boundary Scan
8-bit Microprocessor Interface
128 pin PQFP

LM97593 工具与软件

培训内容	型号	软件/工具类型
LM97593 Evaluation Module	LM97593EVM	开发电路板/EVM