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Details, datasheet, quote on part number:AD9260AS
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| Part: | AD9260AS |
| Category: | Data Conversion => ADC (Analog to Digital Converters) => >14 bit |
| Description: | 16-Bit High Speed Oversampled A/D Converter |
| Company: | Analog Devices |
| Datasheet: | Download AD9260AS datasheet File size : 587 kB |
| Request For quote: | Find where to buy AD9260AS
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Datasheet text preview:
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FEATURES Monolithic 16-Bit, Oversampled A/D Converter 8 Oversampling Mode, 20 MSPS Clock 2.5 MHz Output Word Rate 1.01 MHz Signal Passband w/0.004 dB Ripple Signal-to-Noise Ratio: 88.5 dB Total Harmonic Distortion: 96 dB Spurious Free Dynamic Range: 100 dB Input Referred Noise: 0.6 LSB Selectable Oversampling Ratio: 1 , 2 , 4 , 8 Selectable Power Dissipation: 150 mW to 585 mW 85 dB Stopband Attenuation 0.004 dB Passband Ripple Linear Phase Single +5 V Analog Supply, +5 V/+3 V Digital Supply Synchronize Capability for Parallel ADC Interface Twos-Complement Output Data 44-Lead MQFP
High-Speed Oversampling CMOS ADC with 16-Bit Resolution at a 2.5 MHz Output Word Rate AD9260
FUNCTIONAL BLOCK DIAGRAM
DRVDD AVDD AVDD AVDD AVSS AVSS AVSS DRVSS
RESET/ SYNC DVSS DVDD
VINA
MULTIBIT SIGMA-DELTA MODULATOR
DIGITAL DEMODULATOR 12-BIT: 20MHz STAGE 1:2X DECIMATION FILTER
OTR
VINB
OUTPUT MODE MULTIPLEXER
16-BIT: 10MHz
AD9260
16-BIT: 5MHz REFERENCE BUFFER STAGE 3:2X DECIMATION FILTER STAGE 2:2X DECIMATION FILTER
OUTPUT REGISTER
BIT1BIT16
REF TOP REF BOTTOM COMMON MODE
16-BIT: 2.5MHz
VREF SENSE REFCOM BANDGAP REFERENCE BIAS CIRCUIT CLOCK BUFFER MODE REGISTER
DAV READ
BIAS ADJUST
CLK
MODE
CS
PRODUCT DESCRIPTION
The AD9260 is a 16-bit, high-speed oversampled analog-todigital converter (ADC) that offers exceptional dynamic range over a wide bandwidth. The AD9260 is manufactured on an advanced CMOS process. High dynamic range is achieved with an oversampling ratio of 8× through the use of a proprietary technique that combines the advantages of sigma-delta and pipeline converter technologies. The AD9260 is a switched-capacitor ADC with a nominal fullscale input range of 4 V. It offers a differential input with 60 dB of common-mode rejection of common-mode signals. The signal range of each differential input is ± 1 V centered on a 2.0 V common-mode level. The on-chip decimation filter is configured for maximum performance and flexibility. A series of three half-band FIR filter stages provide 8× decimation filtering with 85 dB of stopband attenuation and 0.004 dB of passband ripple. An onboard digital multiplexer allows the user to access data from the various stages of the decimation filter. The on-chip programmable reference and reference buffer amplifier are configured for maximum accuracy and flexibility. An external reference can also be chosen to suit the user's specific dc accuracy and drift requirements.
The AD9260 operates on a single +5 V supply, typically consuming 585 mW of power. A power scaling circuit is provided allowing the AD9260 to operate at power consumption levels as low as 150 mW at reduced clock and data rates. The AD9260 is available in a 44-lead MQFP package and is specified to operate over the industrial temperature range.
PRODUCT HIGHLIGHTS
The AD9260 is fabricated on a very cost effective CMOS process. High-speed, precision mixed-signal analog circuits are combined with high-density digital filter circuits. The AD9260 offers a complete single-chip 16-bit sampling ADC with a 2.5 MHz output data rate in a 44-lead MQFP. Selectable Internal Decimation Filtering--The AD9260 provides a high-performance decimation filter with 0.004 dB passband ripple and 85 dB of stopband attenuation. The filter is configurable with options for 1×, 2×, 4×, and 8× decimation. Power Scaling--The AD9260 consumes a low 585 mW of power at 16-bit resolution and 2.5 MHz output data rate. Its power can be scaled down to as low as 150 mW at reduced clock rates. Single Supply-- Both of the analog and digital portions of the AD9260 can operate off of a single +5 V supply simplifying system power supply design. The digital logic will also accommodate a single +3 V supply for reduced power.
REV. B
Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 World Wide Web Site: http://www.analog.com Fax: 781/326-8703 © Analog Devices, Inc., 2000
AD9260SPECIFICATIONS
CLOCK INPUT FREQUENCY RANGE
Parameter--Decimation Factor (N) CLOCK INPUT (Modulator Sample Rate, fCLOCK) OUTPUT WORD RATE (FS = fCLOCK/N)
Specifications subject to change without notice
AD9260 (8) 1 20 0.125 2.5
AD9260 (4) 1 20 0.250 5
AD9260 (2) 1 20 0.500 10
AD9260 (1) 1 20 1 20
Units kHz min MHz max kHz min MHz max
DC SPECIFICATIONS unless otherwise noted, R
Parameter--Decimation Factor (N)
RESOLUTION INPUT REFERRED NOISE (TYP) 1.0 V Reference 2.5 V Reference1 ACCURACY Integral Nonlinearity (INL) Differential Nonlinearity (DNL) No Missing Codes Offset Error Gain Error2 Gain Error3 TEMPERATURE DRIFT Offset Error Gain Error2 Gain Error3 POWER SUPPLY REJECTION AVDD, DVDD, DRVDD (+5 V ± 0.25 V) ANALOG INPUT Input Span VREF = 1.0 V VREF = 2.5 V Input (VINA or VINB) Range Input Capacitance INTERNAL VOLTAGE REFERENCE Output Voltage (1 V Mode) Output Voltage Error (1 V Mode) Output Voltage (2.5 V Mode) Output Voltage Error (2.5 V Mode) Load Regulation4 1 V REF 2.5 V REF REFERENCE INPUT RESISTANCE 16
(AVDD = +5 V, DVDD = +3 V, DRVDD = +3 V, fCLOCK = 20 MSPS, VREF = +2.5 V, Input CML = 2.0 V TMIN to TMAX BIAS = 2 k )
AD9260 (8) AD9260 (4) 16 2.4 1.2 (86) ± 0.75 ± 0.50 16 (0.5) (0.66) (0.7) 2.5 22 7.0 0.06 AD9260 (2) 16 6.0 3.7 (76) ± 0.75 ± 0.50 16 (0.5) (0.66) (0.7) 2.5 22 7.0 0.06 AD9260 (1) 12 1.3 1.0 (63.2) ± 0.3 ± 0.25 12 (0.5) (0.66) (0.7) 2.5 22 7.0 0.06 Units Bits min LSB rms typ LSB rms typ (dB typ) LSB typ LSB typ Bits Guaranteed % FSR max (typ @ +25°C) % FSR max (typ @ +25°C) % FSR max (typ @ +25°C) ppm/°C typ ppm/°C typ ppm/°C typ % FSR max
1.40 0.68 (90.6) ± 0.75 ± 0.50 16 0.9 (0.5) 2.75 (0.66) 1.35 (0.7) 2.5 22 7.0 0.06
1.6 4.0 +0.5 +AVDD 0.5 10.2 1 ± 14 2.5 ± 35 0.5 2.0 8
1.6 4.0 +0.5 +AVDD 0.5 10.2 1 ± 14 2.5 ± 35 0.5 2.0 8
1.6 4.0 +0.5 +AVDD 0.5 10.2 1 ± 14 2.5 ± 35 0.5 2.0 8
1.6 4.0 +0.5 +AVDD 0.5 10.2 1 ± 14 2.5 ± 35 0.5 2.0 8
V p-p Diff. max V p-p Diff. max V min V max pF typ V typ mV max V typ mV max mV max mV max k
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REV. B
AD9260
Parameter--Decimation Factor (N)
POWER SUPPLIES Supply Voltages AVDD DVDD and DRVDD Supply Current IAVDD IDVDD IDRVDD POWER CONSUMPTION AD9260 (8) AD9260 (4) AD9260 (2) AD9260 (1) Units
+5 +5.5 +2.7 115 12.5 0.450 613
+5 +5.5 +2.7 115 10.3 0.850 608
+5 +5.5 +2.7 115 6.5 1.7 600
+5 +5.5 +2.7 115 134 2.4 3.5 2.6 585 630
V (± 5%) V max V min mA typ mA max mA typ mA max mA typ mW typ mW max
NOTES 1 VINA and VINB Connect to DUT CML. 2 Including Internal 2.5 V reference. 3 Excluding Internal 2.5 V reference. 4 Load regulation with 1 mA load Current (in addition to that required by AD9260). Specifications subject to change without notice.
AC SPECIFICATIONS unless otherwise noted, R
Parameter--Decimation Factor (N) DYNAMIC PERFORMANCE INPUT TEST FREQUENCY: 100 kHz (typ) Signal-to-Noise Ratio (SNR) Input Amplitude = 0.5 dBFS Input Amplitude = 6.0 dBFS SNR and 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: 500 kHz Signal-to-Noise Ratio (SNR) Input Amplitude = 0.5 dBFS Input Amplitude = 6.0 dBFS SNR and 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
(AVDD = +5 V, DVDD = +3 V, DRVDD = +3 V, fCLOCK = 20 MSPS, VREF = +2.5 V, Input CML = 2.0 V TMIN to TMAX BIAS = 2 k )
AD9260(8) AD9260(4) AD9260(2) AD9260(1) Units
88.5 82.5 87.5 82 96 93 100 94
82 78 82 77.5 96 98 98 100
74 68 74 69 97 96 98 94
63 58 63 58 98 98 88 84
dB typ dB typ dB typ dB typ dB typ dB typ dB typ dB typ
86.5 80.5 82.5 86.0 80.0 82.0 97.0 90.0 95.5 99.0 90.0 98
82 77 81 77 92 96 92 100
74 68 74 68 89 89 91 91
63 58 63 58 86 86 88 82
dB typ dB min dB typ dB typ dB min dB typ dB typ dB max dB typ dB typ dB max dB typ
REV. B
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AD9260SPECIFICATIONS
AC SPECIFICATIONS (Continued)
Parameter--Decimation Factor (N) DYNAMIC PERFORMANCE (Continued) INPUT TEST FREQUENCY: 1.0 MHz (typ) Signal-to-Noise Ratio (SNR) Input Amplitude = 0.5 dBFS Input Amplitude = 6.0 dBFS SNR and 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: 2.0 MHz (typ) Signal-to-Noise Ratio (SNR) Input Amplitude = 0.5 dBFS Input Amplitude = 6.0 dBFS SNR and 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: 5.0 MHz (typ) Signal-to-Noise Ratio (SNR) Input Amplitude = 0.5 dBFS Input Amplitude = 6.0 dBFS SNR and 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 = 475 kHz, fIN2 = 525 kHz fIN1 = 950 kHz, fIN2 = 1.050 MHz DYNAMIC CHARACTERISTICS Full Power Bandwidth Small Signal Bandwidth (A IN = 20 dBFS) Aperture Jitter
Specifications subject to change without notice.
AD9260 (8)
AD9260 (4)
AD9260 (2)
AD9260 (1)
Units
85 80 84.5 80 102 96 105 98
82 76 81 76 96 94 98 96
74 68 74 69 82 84 83 87
63 58 63 58 79 77 80 80
dB typ dB typ dB typ dB typ dB typ dB typ dB typ dB typ
82 76 81 76 101 95 104 100
74 68 73 69 80 80 80 83
63 58 62 58 75 76 78 79
dB typ dB typ dB typ dB typ dB typ dB typ dB typ dB typ
59 57 58 57 58 67 59 70 93 95 75 75 2 91 86 75 75 2 91 85 75 75 2 83 83 75 75 2
dB typ dB typ dB typ dB typ dB typ dB typ dB typ dB typ dBFS typ dBFS typ MHz typ MHz typ ps rms typ
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REV. B
AD9260 DIGITAL FILTER CHARACTERISTICS
Parameter 8× DECIMATION (N = 8) Passband Ripple Stopband Attenuation Passband Stopband Passband/Transition Band Frequency (0.1 dB Point) (3.0 dB Point) Absolute Group Delay1 Group Delay Variation Settling Time (to ± 0.0007%)1 4× DECIMATION (N = 4) Passband Ripple Stopband Attenuation Passband Stopband Passband/Transition Band Frequency (0.1 dB Point) (3.0 dB Point) Absolute Group Delay1 Group Delay Variation Settling Time (to ± 0.0007%)1 2× DECIMATION (N = 2) Passband Ripple Stopband Attenuation Passband Stopband Passband/Transition Band Frequency (0.1 dB Point) (3.0 dB Point) Absolute Group Delay1 Group Delay Variation Settling Time (to ± 0.0007%)1 1× DECIMATION (N = 1) Propagation Delay: tPROP Absolute Group Delay AD9260 0.00125 82.5 0 0.605 × (fCLOCK/20 MHz) 1.870 × (fCLOCK/20 MHz) 18.130 × (fCLOCK/20 MHz) 0.807 × (fCLOCK/20 MHz) 1.136 × (fCLOCK/20 MHz) 13.55 × (20 MHz/fCLOCK) 0 24.2 × (20 MHz/fCLOCK) 0.001 82.5 0 1.24 × (fCLOCK/20 MHz) 3.75 × (fCLOCK/20 MHz) 16.25 × (fCLOCK/20 MHz) 1.61 × (fCLOCK/20 MHz) 2.272 × (fCLOCK/20 MHz) 2.90 × (20 MHz/fCLOCK) 0 5.05 × (20 MHz/fCLOCK) 0.0005 85.5 0 2.491 × (fCLOCK/20 MHz) 7.519 × (fCLOCK/20 MHz) 12.481 × (fCLOCK/20 MHz) 3.231 × (fCLOCK/20 MHz) 4.535 × (fCLOCK/20 MHz) 0.80 × (20 MHz/fCLOCK) 0 1.40 × (20 MHz/fCLOCK) 13 (225 × (20 MHz/fCLOCK)) + tPROP Units dB max dB min MHz min MHz max MHz min MHz max MHz max MHz max µs max µs max µs max dB max dB min MHz min MHz max MHz min MHz max MHz max MHz max µs max µs max µs max dB max dB min MHz min MHz max MHz min MHz max MHz max MHz max µs max µs max µs max ns max ns max
NOTES 1 To determine "overall" Absolute Group Delay and/or Settling Time inclusive of delay from the sigma-delta modulator, add Absolute Group Delay and/or Settling Time pertaining to specific decimation mode to the Absolute Group Delay specified in 1 × decimation. Specifications subject to change without notice.
REV. B
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