Analog Devices: CN0259 Reference Design for High Performance 65 MHz Bandwidth Quad IF Receiver Front End

atomar — Fri, 15 Mar 2013 09:41:39 GMT

Current Revision posted to Documents by atomar on 3/15/2013 9:41:39 AM

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Development Tools

Kit Overview

The Analog Devices circuit evaluation board EVAL-CN0259-HSCZEVAL-CN0259-HSCZ is a 65 MHz bandwidth receiver front end based on the ADL5565ADL5565 ultrahigh dynamic range differential amplifier driver and the 11-bit, 200 MSPS AD6657AAD6657A quad IF receiver.

The fourth-order Butterworth antialiasing filter is optimized based on the performance and interface requirements of the amplifier and IF receiver. The total insertion loss due the filter network and other resistive components is only 2.0 dB. The overall circuit has a bandwidth of 65 MHz, with the low-pass filter having a 1 dB bandwidth of 190 MHz and a 3 dB bandwidth of 210 MHz. The pass-band flatness is 1 dB.

The circuit is optimized to process a 65 MHz bandwidth IF signal centered at 140 MHz with a sampling rate of 184.32 MSPS. The SNR and SFDR measured with a 140 MHz analog input across the 65 MHz band are 70.1 dBFS and 80.9 dBc, respectively.

The AD6657AAD6657A is an 11-bit, 200 MSPS, quad channel intermediate frequency (IF) receiver specifically designed to support multiple antenna systems in telecommunication applications where high dynamic range performance, low power, and small size are desired.

This circuit uses the EVAL-CN0259-HSCZEVAL-CN0259-HSCZ circuit board and the HSC-ADC-EVALCZHSC-ADC-EVALCZ FPGA-based data capture board. The two boards have mating high speed connectors, allowing for the quick setup and evaluation of the circuit's performance. The EVAL-CN0259-HSCZ board contains the circuit evaluated as described in this note, and the HSC-ADC-EVALCZ data capture board is used in conjunction with Visual Analog evaluation software, as well as the SPI Controller software to properly control the ADC and capture the data

Key Applications: Communications, Radar

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Development Tools

Hardware Tools

FPGA Based Data Capture Kit (HSC-ADC-EVALCZHSC-ADC-EVALCZ)
CN-0259 evaluation board (EVAL-CN0259-HSCZEVAL-CN0259-HSCZ)

Software Tools

VisualAnalog Converter Evaluation Tool
SPI Controller: control advanced features on high speed, analog-to-digital converters (ADC) with SPI capability

Technical Documents

Learning Center

Type	Description
User Manual	ADI: User Manual for CN-0259 High Performance 65 MHz Bandwidth Quad IF Receiver with Antialiasing Filter and 184.32 MSPS Sampling Rate
User Guide	ADI: User Guide (UG-232) for Evaluating the AD6642/AD6657 Analog-to-Digital Converters
Datasheet	ADI: Datasheet for AD6657A Quad IF Receiver (Rev 0)
Datasheet	ADI: Datasheet for ADL5565 6 GHz Ultrahigh Dynamic Range Differential Amplifier (Rev C)
Application Note	ADI: Application Note (AN-835) for Understanding High Speed ADC Testing and Evaluation
Application Note	ADI: Application Note (AN-932) for Power Supply Sequencing

Design Elements

Type	Description
Schematics	ADI: Schematics for EVAL-CN0259-HSCZ Evaluation Board
Layout	ADI: Layout File for EVAL-CN0259-HSCZ
BOM	ADI: BOM File for EVAL-CN0259-HSCZ Evaluation Board

Video

Kit Features

Key feature for AD6657AAD6657A are as below:

11-bit, 200 MSPS output data rate per channel
Integrated noise shaping requantizer
Performance with NSR enabled
- SNR: 76.0 dBFS in 40 MHz band to 70 MHz at 185 MSPS
- SNR: 73.6 dBFS in 60 MHz band to 70 MHz at 185 MSPS
- SNR: 72.8 dBFS in 65 MHz band to 70 MHz at 185 MSPS
Performance with NSR disabled
- SNR: 66.5 dBFS to 70 MHz at 185 MSPS
- SFDR: 88 dBc to 70 MHz at 185 MSPS
Low power: 1.2 W at 185 MSPS
1.8 V analog supply operation
1.8 V LVDS (ANSI-644 levels) output
1-to-8 integer clock divider
Internal ADC voltage reference
1.75 V p-p analog input range (programmable to 2.0 V p-p)
Differential analog inputs with 800 MHz bandwidth
95 dB channel isolation/crosstalk
Serial port control
User-configurable built-in self test (BIST) capability
Energy saving power-down modes

Kit Contents

The Analog Devices EVAL-CN0259-HSCZEVAL-CN0259-HSCZ is supplied with below contents:

Evaluation Board

Tags: ad6657a, adl5565, eval-cn0259-hscz, analog_devices