AFE8406 Datasheet, PDF (1/138 Pages) Texas Instruments – 14-Bit, 85 MSPS Dual ADC, 8-Channel Wideband Receiver

Product Preview
14-Bit, 85 MSPS Dual ADC,
8-Channel Wideband Receiver
SLWS168 - OCTOBER 2005
AFE8406
FEATURES
• 14-bit 85 MSPS high performance dual ADC
• The dual ADC can be configured into single ADC
• At Fin=140MHz, SNR>=68dB, SFDR>=70dBc
• At Fin = 70MHz, SNR>=70dB, SFDR>=82dBc
• Independent clocks for ADC and DDC with build-in FIFO
• Programmable closed loop VGA control with 6-bit outputs for each ADC
• Provide Received Total Wide band Power (RTWP) measurement for the composite power across carriers with
programmable time window for measurement
• 8 UMTS Digital Down Converter (DDC) channels or 16 CDMA/TD-SCDMA DDC channels with programmable 18 bit
filter coefficients
• Each DDC channel includes
o Real or complex DDC inputs
o UMTS mode Rx Filtering: 6 stage CIC (m=1 or 2), up to 40 tap CFIR, up to 64 tap PFIR
o CDMA mode Rx Filtering: 6 stage CIC (m=1 or 2), up to 64 tap CFIR, up to 64 tap PFIR
o Each DDC channel provides individual channel specific power measurements
o Each DDC channel has a dedicated final AGC
• Test Bus to monitor data at different stages of the DDC signal path
• 3.3V analog supplies, 1.5V digital core supply, 3.3V digital I/O supply
• 484 ball plastic BGA (23mm x 23mm) with 1.0 mm pitch
• Power dissipation: ~2.1W
APPLICATIONS
• Wireless base station receiver
• Multi-carrier digital receiver
• UMTS (4 carriers-1 sector with diversity)
• CDMA (8 carriers-1 sector with diversity)
• TD-SCDMA (16 carriers-1 sector without diversity, 8 carriers-1-sector with diversity)
• Digital radio receivers
• Wide band receivers
• Software radios
• Wireless local loop
• Intelligent antenna systems
PRODUCT PREVIEW information concerns products in the formative or design phase of development. Characteristic data and other
specifications are design goals. Texas Instruments reserves the right to change or discontinue these products without notice.