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AD7013

Analog Devices
Part Number AD7013
Manufacturer Analog Devices
Description CMOS TIA IS-54 Baseband Receive Port
Published Mar 23, 2005
Detailed Description a FEATURES Single +5 V Supply Receive Channel Differential or Single-Ended Analog Inputs Auxiliary Set of Analog I & Q I...
Datasheet PDF File AD7013 PDF File

AD7013
AD7013

Overview
a FEATURES Single +5 V Supply Receive Channel Differential or Single-Ended Analog Inputs Auxiliary Set of Analog I & Q Inputs Two Sigma-Delta A/D Converters Choice of Two Digital FIR Filters Root-Raised-Cosine Rx Filters, α = 0.
35 Brick Wall FIR Rx Filters On-Chip or User Rx Offset Calibration ADC Sampling Vernier Three Auxiliary DACs On-Chip Voltage Reference Low Active Power Dissipation, Typical 45 mW Low Sleep Mode Power Dissipation, <50 µ W 28-Pin SSOP APPLICATIONS American TIA Digital Cellular Telephony American Analog Cellular Telephony Digital Baseband Receivers GENERAL DESCRIPTION The AD7013 is a complete low power, CMOS, TIA IS-54 baseband receive port with single +5 V power supply.
The part is CMOS TIA IS-54 Baseband Receive Port AD7013 designed to perform the baseband conversion of I and Q waveforms in accordance with the American (TIA IS-54) Digital Cellular Telephone system.
The receive path consists of two high performance sigma-delta ADCs, each followed by a FIR digital filter.
A primary and auxiliary set of IQ differential analog inputs are provided, where either can be selected as inputs to the sigma-delta ADCs.
Also, a choice of two frequency responses are available for the receive FIR filters; a Root-Raised-Cosine filter for digital mode or a brick wall response for analog mode.
Differential analog inputs are provided for both I and Q channels.
On-chip calibration logic is also provided to remove either on-chip offsets or remove system offsets.
A 16-bit serial interface is provided, interfacing easily to most DSPs.
The receive path also provides a means to vary the sampling instant, giving a resolution to 1/32 of a symbol interval.
The auxiliary section provides two 8-bit DACs and one 10-bit DAC for functions such as automatic gain control (AGC), automatic frequency control (AFC) and power amplifier control.
As it is a necessity for all digital mobile systems to use the lowest possible power, the device has receive and auxiliary power down option...


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