AD9248BST-65 Analog Devices, Inc., AD9248BST-65 Datasheet
AD9248BST-65
Available stocks
Related parts for AD9248BST-65
AD9248BST-65 Summary of contents
Page 1
... Multiplexed data output option enables single-port operation from either data port A or data port B. 6/29/2004 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 Fax: 781.326.8703 © 2004 Analog Devices, Inc. All rights reserved. AD9248 AGND AVDD OTR_A 14 D13 -D ...
Page 2
AD9248 TABLE OF CONTENTS General Description .............................................................. 1 Product Highlights ................................................................ 1 DC Specifications (Continued) ............................................. 5 Switching Specifications ....................................................... 6 AC Specifications ................................................................. 7 Absolute Maximum Ratings ..................................................... 9 ESD Caution ......................................................................... 9 Terminolgy .......................................................................... 12 Typical Performance CharacteristiC ...
Page 3
... 2.7 3.0 3.6 2.7 IV 2.25 3.0 3.6 2. ±0.01 V 180 VI 190 212 V 2.0 Rev. PrE | Page AD9248 AD9248BST/BCP Typ Max Min Typ Max 14 14 ±0.5 ±0.5 ±0.7 ±0.7 ±0.5 ±0.5 ±0.5 ±0.5 ±1.4 ±1.4 ±1.4 ±1.4 ±10 ±10 ±12 ±12 ±5 ±35 ±5 ± ...
Page 4
AD9248 CHARACTERISTICS Offset Error Full Gain Error Full 1 Gain error and gain temperature coefficient are based on the A/D converter only (with a fixed 1.0 V external reference). 2 Measured at maximum clock rate with a low frequency sine ...
Page 5
... AD9248BST/BCP- AD9248BST/BCP- 20 Level Min Typ Max Min IV 2.0 2 3.29 3.29 IV 3.25 3.25 IV 0.05 IV 0.2 IV 2.49 2.49 IV 2.45 2.45 IV 0.05 IV 0.2 Rev. PrE | Page AD9248 AD9248BST/BCP Typ Max Min Typ Max 2.0 0.8 0.8 + + 3.29 3.25 0.05 0.05 0.2 0.2 2.49 2.45 0.05 0.05 0.2 0.2 Unit V V µA µ ...
Page 6
... Min Typ Max Full VI 20 Full V 1 Full V 50.0 Full V 15.0 Full V 15.0 Full VI 2 3.5 6 Full V 7 Full V 1.0 Full V 0.5 Full V 2.5 Full V 2 Rev. PrE | Page AD9248BST/BCP- AD9248BST/BCP Min Typ Max Min Typ 25.0 15.4 8.8 6.2 8.8 6 1.0 1.0 0.5 0.5 2.5 2 Max Unit MSPS 1 MSPS ...
Page 7
... IV 25°C V 11.4 25° 83.0 Full V - 81.0 25° 83.0 tbd Full V 25°C I Full V 25°C I 25° 77.0 Full V - 84.0 Full V Full V Rev. PrE | Page AD9248 AD9248BST/BCP- AD9248BST/BCP Min Typ Max Min Typ tbd 72 72 tbd 72.8 72.6 71.9 tbd 71.6 71.5 tbd 71 69.5 69.4 11.8 11.8 11.7 tbd 11.7 11.6 tbd 11 ...
Page 8
AD9248 f = 2.4 MHz INPUT f = 9.7 MHz INPUT f = 19.6 MHz INPUT f = 32.5 MHz INPUT f = 100 MHz INPUT CROSSTALK Specifications subject to change without notice. Preliminary Technical Data 25°C V 86.0 Full ...
Page 9
Preliminary Technical Data ABSOLUTE MAXIMUM RATINGS Table 5. AD9248 Absolute Maximum Ratings Parameter Pin Name ELECTRICAL AVDD DRVDD AGND AVDD Digital Outputs CLK, DCS, MUX_SELECT, SHARED_REF, OEB, DFS VINA, VINB VREF SENSE REFB, REFT PDWN 2 ENVIRONMENTAL Operating Temperature Junction ...
Page 10
AD9248 AGND VIN+_A VIN – _A AGND AVDD REFT_A REFB_A VREF SENSE REFB_B REFT_B AVDD AGND VIN– _B VIN+_B AGND Table 6. Pin Function Descriptions Pin Mnemonic Number 2 VIN+_A 3 VIN–_A 15 VIN+_B 14 VIN REFT_A 7 ...
Page 11
... Lead Frame Chip Scale Package (LFCSP) 64-Lead LOW PROFILE QUAD FLAT PACK (TQFP) 64-Lead LOW PROFILE QUAD FLAT PACK (TQFP) 64-Lead LOW PROFILE QUAD FLAT PACK (TQFP) Evaluation Board with AD9248BST-20 Evaluation Board with AD9248BST-40 Evaluation Board with AD9248BST-65 Rev. PrE | Page AD9248 Package Option CP-64-1 CP-64-1 ...
Page 12
AD9248 TERMINOLGY Aperture Delay Aperture delay is a measure of the sample-and-hold amplifier (SHA) performance and is measured from the rising edge of the clock input to when the input signal is held for conversion. Aperture Jitter The variation in ...
Page 13
Preliminary Technical Data Crosstalk Coupling onto one channel being driven 0.5 dBFS) signal when the adjacent interfering channel is driven by a full- scale signal. Measurement includes all spurs resulting from both direct coupling and mixing components. ...
Page 14
AD9248 TYPICAL PERFORMANCE CHARACTERISTIC Preliminary Technical Data Rev. PrE | Page ...
Page 15
Preliminary Technical Data EQUIVALENT CIRCUITS Equivalent Analog Input Circuit Figure xx. THEORY OF OPERATION The AD9248 consists of two high performance analog-to- digital converters (ADCs) that are based on the AD9235 converter core. The dual ADC paths are independent, except ...
Page 16
AD9248 input; therefore, the precise values are dependant on the application under sampling applications, any shunt capacitors should be removed. In combination with the driving source impedance, they would limit the input bandwidth. For best dynamic performance, the ...
Page 17
Preliminary Technical Data degradation in SFDR and in distortion performance due to the large input common- mode swing. However, if the source impedances on each input are matched, there should be little effect on SNR performance. CLOCK INPUT AND CONSIDERATIONS ...
Page 18
AD9248 The data format can be selected for either offset binary or twos complement. This is discussed later in the Data Format section. TIMING The AD9248 provides latched data outputs with a pipeline delay of seven clock cycles. Data outputs ...
Page 19
Preliminary Technical Data VOLTAGE REFERENCE A stable and accurate 0.5 V voltage reference is built into the AD9248. The input range can be adjusted by varying the reference voltage applied to the AD9248, using either the internal reference with different ...
Page 20
AD9248 AD9248 Figure xx. Programmable Reference Configuration Typical V Figure xx. REF Preliminary Technical Data Drift Rev. PrE | Page Accuracy vs. Load Figure xx. REF ...
Page 21
Preliminary Technical Data EVALUATION BOARD DIAGRAMS Rev. PrE | Page AD9248 ...
Page 22
AD9248 OUTLINE DIMENSIONS Figure 5. Preliminary Technical Data 64-Lead Lead Frame Chip Scale Package (LFCSP) Rev. PrE | Page ...
Page 23
Preliminary Technical Data Rev. PrE | Page AD9248 ...