Datasheet > RD-170

RD-170

更新时间： 2024-02-25 05:42:56

品牌	Logo	应用领域
美国国家半导体 - NSC		/
页数	文件大小	规格书
14页	5363K
描述
Low IF Receiver Reference Design

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RD-170 数据手册

National Semiconductor

RD-170

Strategic Signal Path Applications

December 2008

Low IF Receiver Reference

Design

■ Configured for input frequencies between 5 and 52 MHz

■ Board comes fully assembled and tested

■ Single (+5V) supply needed

1.0 Design Description

The SP16130CH4RB Reference Board demonstrates a low

IF receiver subsystem application including an ADC16V130

analog-to-digital converter (ADC) and LMK04031B clock con-

ditioner which provides digitization and clocking as used in

wireless infrastructure systems.

■ All ADC features can be exercised

■ Featured Products Include:

— ADC16V130 16-bit, 130 Megasample per second

(MSPS) ADC with parallel LVDS outputs

This subsystem reference design provides single to differ-

ential conversion and lowpass filtering of the input signal with

an optimized, double-balun network and high dynamic range

digitization to parallel LVDS outputs using the ADC16V130.

The 125 MHz low-jitter, LVPECL clock signal for the ADC is

generated by a LMK04031B clock conditioner which demon-

strates less than 250 fs of total jitter over the input bandwidth

of the ADC.

— LMK04031B low-jitter precision clock conditioner

consisting of cascaded phase locked loops (PLLs), an

internal voltage controlled oscillator (VCO) and a

distribution stage

— Several energy-efficient power management ICs

■ Large-signal (-1 dBFS) performance for a 52 MHz input

signal:

The measured system performance demonstrates a large

signal SNR of 75.8 dBFS and SFDR greater than 84 dBFS for

a -1 dBFS, 52 MHz input signal and a sampling frequency of

125 MSPS. For small signals, the performance improves to

78.0 dBFS SNR and greater than 94 dBFS SFDR.

Evaluation of this reference board is simplified with the

WaveVision 5.1 Data Capture Board and WaveVision 5 soft-

ware.

— SNR = 75.8 dBFS

— SFDR > 84 dBFS

■ Small-signal (-20 dBFS) performance for a 52 MHz input

signal:

— SNR = 78.0 dBFS

— SFDR > 94 dBFS

■ Total integrated jitter < 250 fs

■ PIC Loader board included with reference board for quick

and easy configuration of the LMK04031B

2.0 Features

Key Features of the SP16130CH4RB Low IF Receiver Ref-

erence Design Board

■ Compatible with the WaveVision 5.1 Data Capture Board

and WaveVision 5 software for simplified evaluation

■ Demonstrates a subsystem architecture used in wireless

infrastructure systems and frequency domain analyzers

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RD-170_14	NSC	获取价格	Low IF Receiver Reference Design
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