High Speed Oversampling CMOS w/16-Bit Resolution Output Word Rate AD92
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FEATURES Monolithic 16-Bit, Oversampled Converter Oversampling Mode, MSPS Clock Output Word Rate 1.01 Signal Passband w/0.004 Ripple Signal-to-Noise Ratio: Total Harmonic Distortion: Spurious Free Dynamic Range: Input Referred Noise: Selectable Oversampling Ratio: Selectable Power Dissipation: Stopband Attenuation 0.004 Passband Ripple Linear Phase Single Analog Supply, V/+3 Digital Supply Synchronize Capability Parallel Interface Twos-Complement Output Data 44-Lead MQFP
High Speed Oversampling CMOS w/16-Bit Resolution Output Word Rate AD9260
AVDDAVSSAVDDAVSS AVDDAVSS RESET/SYNCH DVSS DVDD DRVDD DRVSS
VINA VINB
MULTIBIT SIGMA-DELTA MODULATOR
DIGITAL DEMODULATOR 12bit: 20MHz STAGE DECIMATION FILTER
16bit: 10MHz
AD9260
16bit: 5MHz
BOTTOM COMMON MODE
16bit: 2.5MHz REFERENCE BUFFER
STAGE DECIMATION FILTER
BIT1 BIT16
OUTPUT REGISTER
STAGE DECIMATION FILTER
OUTPUT MODE MULTIPLEXER
MODE REGISTER READ
VREF SENSE REFCOM
BANDGAP REFERENCE BIAS CIRCUIT CLOCK BUFFER
BIAS ADJUST
MODE
PRODUCT DESCRIPTION
AD9260 16-bit, high speed oversampled analog-todigital converter (ADC) that offers exceptional dynamic range over wide bandwidth. AD9260 manufactured advanced CMOS process. High dynamic range achieved with oversampling ratio through proprietary technique which combines advantages sigma-delta pipeline converter technologies.
AD9260 switched-capacitor with nominal fullscale input range offers differential input with common-mode rejection common-mode signals. signal range each differential input centered common-mode level. on-chip decimation filter configured maximum performance flexibility. series three half-band filter stages provide decimation filtering with stopband attenuation 0.004 passband ripple. onboard digital multiplexer allows user access data from various stages decimation filter.
AD9260 operates single supply, typically consuming power. power scaling circuit provided allowing AD9260 operate power consumption levels reduced clock data rates. AD9260 available 44-lead MQFP package specified operate over industrial temperature range.
PRODUCT HIGHLIGHTS
AD9260 fabricated very cost effective CMOS process. High speed, precision mixed-signal analog circuits combined with high density digital filter circuits. AD9260 offers complete single-chip 16-bit sampling with output data rate 44-lead MQFP. Selectable Internal Decimation Filtering-The AD9260 provides high performance decimation filter with 0.004 passband ripple stopband attenuation. filter configurable with options decimation. Power Scaling-The AD9260 consumes power 16-bit resolution output data rate. power scaled down reduced clock rates. Single Supply- Both analog digital portions AD9260 operate single supply simplifying system power supply design. digital logic will also accommodate single supply reduced power.
on-chip programmable reference reference buffer amplifier configured maximum accuracy flexibility. external reference also chosen suit users specific accuracy drift requirements.
REV.
Information furnished Analog Devices believed accurate reliable. However, responsibility assumed Analog Devices use, infringements patents other rights third parties which result from use. license granted implication otherwise under patent patent rights Analog Devices. Technology Way, P.O. 9106, Norwood, 02062-9106, U.S.A. Tel: 617/329-4700 World Wide Site: http://www.analog.com Fax: 617/326-8703 Analog Devices, Inc., 1997
AD9260-SPECIFICATIONS
CLOCK INPUT FREQUENCY RANGE
Parameter DECIMATION FACTOR CLOCK INPUT (Modulator Sample Rate, fCLOCK) OUTPUT WORD RATE fCLOCK/N)
Specifications subject change without notice
AD9260 0.125
AD9260 0.250
AD9260 0.500
AD9260
Units
SPECIFICATIONS
Parameter DECIMATION FACTOR RESOLUTION
(AVDD DVDD DRVDD fCLOCK MSPS, VREF TMIN TMAX unless otherwise noted, RBIAS
AD9260 AD9260 AD9260 AD9260 Bits Bits Guaranteed ppm/°C ppm/°C ppm/°C Units
INPUT REFERRED NOISE (TYP) Reference Reference ACCURACY Integral Nonlinearity (INL) Differential Nonlinearity (DNL) (VREF (VREF Missing Codes Zero Error +25°C Gain Error +25°C Gain Error +25°C (Ext. Ref) TEMPERATURE DRIFT Zero Error Gain Error Gain Error (Ext. Ref) POWER SUPPLY REJECTION AVDD, DVDD, DRVDD ?0.25 ANALOG INPUT Input Span VREF VREF Input (VINA VINB) Range Input Capacitance INTERNAL VOLTAGE REFERENCE Output Voltage Mode) Output Voltage Error Mode) Output Voltage (2.5 Mode) Output Voltage Error (2.5 Mode) Load Regulation REFERENCE INPUT RESISTANCE
+0.5 +AVDD-0.5 +0.5 +AVDD-0.5 +0.5 +AVDD-0.5
+0.5 +AVDD-0.5
Diff. Diff.
REV.
AD9260
Parameter POWER SUPPLIES Supply Voltages AVDD DVDD DRVDD Supply Current IAVDD IDVDD IDRVDD POWER CONSUMPTION
Specifications subject change without notice.
AD9260
AD9260
AD9260
AD9260
Units
+5.5 +2.7
+5.5 +2.7
+5.5 +2.7
+5.5 +2.7
SPECIFICATIONS
Parameter DECIMATION FACTOR
AVDD DVDD DRVDD fCLOCK MSPS, VREF TMIN TMAX unless otherwise noted, BIAS
DYNAMIC PERFORMANCE Input Test Frequency: Signal-to-Noise Ration (SNR) Input Amplitude -0.5 dBFS Input Amplitude -6.0 dBFS Distortion (SINAD Input Amplitude -0.5 dBFS Input Amplitude -6.0 dBFS Total Harmonic Distortion (THD) Input Amplitude -0.5 dBFS Input Amplitude -6.0 dBFS
AD9260 AD9260 AD9260
AD9260
Units
max`
Spurious Free Dynamic Range (SFDR) Input Amplitude -0.5 Input Amplitude -6.0 dBFS Input Test Frequency: (typ) Signal-to-Noise Ration (SNR) Input Amplitude -0.5 dBFS Input Amplitude -6.0 dBFS Distortion (SINAD) Input Amplitude -0.5 dBFS Input Amplitude -6.0 dBFS Total Harmonic Distortion (THD) Input Amplitude -0.5 dBFS Input Amplitude -6.0 dBFS Spurious Free Dynamic Range (SFDR) Input Amplitude -0.5 dBFS Input Amplitude -6.0 dBFS
REV.
AD9260-SPECIFICATIONS
SPECIFICATIONS (Continued)
Parameter Input Test Frequency: Signal-to-Noise Ration (SNR) Input Amplitude -0.5 dBFS Input Amplitude -6.0 dBFS Distortion (SINAD) Input Amplitude -0.5 dBFS Input Amplitude -6.0 dBFS Total Harmonic Distortion (THD) Input Amplitude -0.5 dBFS Input Amplitude -6.0 dBFS Spurious Free Dynamic Range (SFDR) Input Amplitude -0.5 dBFS Input Amplitude -6.0 dBFS Input Test Frequency: (typ) Signal-to-Noise Ration (SNR) Input Amplitude -0.5 dBFS Input Amplitude -6.0 dBFS Distortion (SINAD) Input Amplitude -0.5 dBFS Input Amplitude -6.0 dBFS Total Harmonic Distortion (THD) Input Amplitude -0.5 dBFS Input Amplitude -6.0 dBFS Spurious Free Dynamic Range (SFDR) Input Amplitude -0.5 dBFS Input Amplitude -6.0 dBFS Input Test Frequency: (typ) Signal-to-Noise Ration (SNR) Input Amplitude -0.5 dBFS Input Amplitude -6.0 dBFS Distortion (SINAD) Input Amplitude -0.5 dBFS Input Amplitude -6.0 dBFS Total Harmonic Distortion (THD) Input Amplitude -0.5 dBFS Input Amplitude -6.0 dBFS Spurious Free Dynamic Range (SFDR) Input Amplitude -0.5 dBFS Input Amplitude -6.0 dBFS INTERMODULATION DISTORTION fIN1 kHz, fIN2 fIN1 kHz, fIN2 1.050 FULL POWER BANDWIDTH Small Signal Bandwidth Settling time: Decimation Overvoltage Recovery Time
Specifications subject change without notice.
AD9260
AD9260
AD9260
AD9260
Units
REV.
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