WIDEBAND RECEIVER. AFE8405 Datasheet

AFE8405 RECEIVER. Datasheet pdf. Equivalent

Part AFE8405
Description 8-CHANNEL WIDEBAND RECEIVER
Feature www.ti.com 1 Introduction AFE8405 14-BIT, 85-MSPS, SINGLE-ADC, 8-CHANNEL WIDEBAND RECEIVER SLWS212A.
Manufacture etcTI
Datasheet
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AFE8405
www.ti.com
1 Introduction
AFE8405
14-BIT, 85-MSPS, SINGLE-ADC, 8-CHANNEL WIDEBAND RECEIVER
SLWS212A – OCTOBER 2008 – REVISED JANUARY 2009
1.1 FEATURES
14-Bit 85-MSPS High-Performance Single ADC
At fIN = 140 MHz, SNR 71 dBFS,
SFDR 79 dBc
At fIN = 70 MHz, SNR 73 dBFS,
SFDR 85 dBc
Independent Clocks for ADC and DDC With
Built-In FIFO
Programmable Closed-Loop VGA Control With
6-Bit Outputs for ADC
Received Total Wideband Power (RTWP)
Measurement for the Composite Power Across
Carriers With Programmable Time Window for
Measurement
8 UMTS Digital Downconverter (DDC)
Channels or 16 CDMA/TD-SCDMA DDC
Channels With Programmable 18-Bit Filter
Coefficients
Each DDC Channel Provides:
– Real or Complex DDC Inputs
– UMTS Mode Rx Filtering: 6-Stage CIC (m =
1 or 2), up to 40-Tap CFIR, up to 64-Tap
PFIR
– CDMA Mode Rx Filtering: 6-Stage CIC (m =
1 or 2), up to 64-Tap CFIR, up to 64-Tap
PFIR
– Individual Channel-Specific Power
Measurements
– A Dedicated Final AGC
Test Bus to Monitor Data at Different Stages of
the DDC Signal Path
3.3-V Analog Supplies, 1.5-V Digital Core
Supply, 3.3-V Digital I/O Supply
484-Ball Plastic BGA (23 mm × 23 mm) With
1,0-mm Pitch
Power Dissipation (Eight Active DDC
Channels): 2.3 W
1.2 APPLICATIONS
Wireless Base Station Receiver
Multi-Carrier Digital Receiver
UMTS (8 Carriers-1 Sector)
CDMA (16 Carriers-1 Sector)
TD-SCDMA (16 Carriers-1 Sector)
Digital Radio Receivers
Wideband Receivers
Software Radios
Wireless Local Loop
Intelligent Antenna Systems
Contents
1 Introduction ............................................... 1
1.1 FEATURES ........................................... 1
1.2 APPLICATIONS ...................................... 1
2 General Description ..................................... 3
3 SPECIFICATIONS ........................................ 4
3.1 PACKAGE ORDERING INFORMATION ............. 4
3.2 ABSOLUTE MAXIMUM RATINGS ................... 4
3.3 RECOMMENDED OPERATING CONDITIONS...... 4
3.4 THERMAL CHARACTERISTICS ..................... 5
3.5 POWER DISSIPATION............................... 5
3.6 ANALOG ELECTRICAL CHARACTERISTICS ....... 6
3.7 DIGITAL CHIP DC CHARACTERISTICS ............ 8
3.8 DIGITAL CHIP AC TIMING CHARACTERISTICS ... 9
4 AFE8405 PINS........................................... 10
4.1 Analog Section Signals.............................. 10
4.2 Digital Receive Section Signals ..................... 11
4.3 Microprocessor Signals ............................. 14
4.4 JTAG Signals........................................ 15
4.5 Factory Test and No-Connect Signals .............. 15
4.6 Power and Ground Signals.......................... 15
4.7 Digital Supply Monitoring............................ 16
4.8 JTAG ................................................ 16
4.9 AFE8405 and AFE8406 PCB Design Compatibility. 16
5 Typical Characteristics................................ 17
6 ANALOG-TO-DIGITAL CONVERTERS.............. 24
6.1 ADC Operation ...................................... 24
6.2 ADC Input Configuration ............................ 24
6.3 ADC Input Voltage Overstress ...................... 28
6.4 ADC Reference Circuit .............................. 28
6.5 ADC Clock Input..................................... 28
7 RECEIVE DIGITAL SIGNAL PROCESSING ........ 30
7.1 Receive Input Interface.............................. 30
7.2 DDC Organization................................... 43
8 AFE8405 GENERAL CONTROL...................... 73
8.1 Microprocessor Interface Control Data, Address,
and Strobes ......................................... 73
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this document.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2008–2009, Texas Instruments Incorporated



AFE8405
AFE8405
14-BIT, 85-MSPS, SINGLE-ADC, 8-CHANNEL WIDEBAND RECEIVER
SLWS212A – OCTOBER 2008 – REVISED JANUARY 2009
www.ti.com
8.2 Synchronization Signals............................. 76
8.3 Interrupt Handling ................................... 77
8.4 AFE8405 Programming ............................. 77
2 Contents
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