Document
FEATURES
SNR = 90 dB in 1.25 MHz bandwidth to Nyquist SNR = 87 dB in 1.25 MHz bandwidth to 200 MHz Integrated 14-bit, 92.16 MSPS ADC IF sampling frequencies to 200 MHz Internal 2.4 V reference, 2.2 V p-p analog input range Internal differential track-and-hold analog input Processes 4/6 wideband carriers simultaneously Fractional clock multiplier to 200 MHz Programmable decimating FIR filters, interpolating
half-band filters and programmable AGC loops with 96 dB range Three 16-bit configurable parallel output ports User-configurable built-in self-test (BIST) capability 8-/16-bit microport and SPORT/SPI® serial port control
14-Bit, 92.16 MSPS, 4-/6-Channel Wideband IF to Baseband Receiver
AD6654
APPLICATIONS
Multicarrier, multimode digital receivers GSM, EDGE, PHS, UMTS, WCDMA, CDMA2000,
TD-SCDMA, WiMAX Micro and pico cell systems, software radios Wireless local loop Smart antenna systems In-building wireless telephony Broadband data applications Instrumentation and test equipment
FUNCTIONAL BLOCK DIAGRAM
14-BIT ADC FRONT END
4-CHANNEL AND 6-CHANNEL DIGITAL DOWN CONVERTER
ENC+ ENC– AIN+ AIN– VREF
SHA
INTERNAL TIMING
ADC
14
INPUT MATRIX
2.4V VREF
NCO NCO NCO
CIC5 M = 1–32
CIC5 M = 1–32
CIC5 M = 1–32
FIR1 HB1 M = BYP, 2
FIR1 HB1 M = BYP, 2
FIR1 HB1 M = BYP, 2
FIR2 HB2 M = BYP, 2
FIR2 HB2 M = BYP, 2
FIR2 HB2 M = BYP, 2
MRCF DRCF M = 1–16
MRCF DRCF M = 1–16
MRCF DRCF M = 1–16
CRCF M = 1–16
CRCF M = 1–16
CRCF M = 1–16
DATA ROUTER MATRIX
OVR (ADC OVERRANGE)
3 EXP (VGA LEVEL CONTROL)
PRN GEN
EXP BITS
PEAK/ RMS MSMT
NCO NCO
CIC5 M = 1–32
CIC5 M = 1–32
FIR1 HB1 M = BYP, 2
FIR1 HB1 M = BYP, 2
FIR2 HB2 M = BYP, 2
FIR2 HB2 M = BYP, 2
MRCF DRCF M = 1–16
MRCF DRCF M = 1–16
CRCF M = 1–16
CRCF M = 1–16
(AVAILABLE IN 6-CHANNEL MODEL ONLY)
NCO
CIC5 M = 1–32
FIR1 HB1 M = BYP, 2
FIR2 HB2 M = BYP, 2
MRCF DRCF M = 1–16
CRCF M = 1–16
M = DECIMATION L = INTERPOLATION
AVDD, DRVDD, VDDCORE, VDDIO, GND
SYNC 0, 1, 2, 3
CLOCK MULTIPLIER
8-BIT/16-BIT MICROPORT INTERFACE
LHB L = 1, 2
DATA ROUTING
LHB L = 1, 2
LHB L = 1, 2
LHB L = 1, 2
LHB L = 1, 2
PA AGC PB
PC
PARALLEL PORTS
LHB L = 1, 2
SPORT/ SPI INTERFACE
05156-001
Figure 1.
Rev. 0
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AD6654
TABLE OF CONTENTS
General Description ......................................................................... 4 Product Highlights ....................................................................... 5
Specifications..................................................................................... 6 Recommended Operating Conditions ...................................... 6 ADC DC Specifications ............................................................... 6 ADC Digital Specifications ......................................................... 6 ADC Switching Specifications.................................................... 7 ADC AC Specifications ............................................................... 7 Electrical Characteristics............................................................. 8 Timing Characteristics ................................................................ 9 Microport Timing Characteristics ........................................... 10 Serial Port Timing Characteristics ........................................... 11
Timing Diagrams............................................................................ 12 Absolute Maximum Ratings.......................................................... 18
Thermal Characteristics ............................................................ 18 Explanation of Test Levels ......................................................... 18 ESD Caution................................................................................ 18 Pin Configuration and Function Descriptions........................... 19 Typical Performance Characteristics ........................................... 22 ADC Equivalent Circuits............................................................... 25 Terminology .................................................................................... 26 Theory of Operation ...................................................................... 27 ADC Architecture ...................................................................... 27 Application information ................................