AD9286 Datasheet PDF - Analog Devices

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AD9286
Analog Devices

Part Number AD9286
Description 1.8 V Dual Analog-to-Digital Converter (ADC)
Page 28 Pages


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Data Sheet
FEATURES
Single 1.8 V supply operation
SNR: 49.3 dBFS at 200 MHz input at 500 MSPS
SFDR: 65 dBc at 200 MHz input at 500 MSPS
Low power: 315 mW at 500 MSPS
On-chip interleaved clocking
On-chip reference and track-and-hold
1.2 V p-p analog input range for each channel
Differential input with 500 MHz bandwidth
LVDS-compliant digital output
On-chip voltage reference and sample-and-hold circuit
DNL: ±0.2 LSB
Serial port control options
Interleaved clock timing adjustment
Offset binary, Gray code, or twos complement data format
Optional clock duty cycle stabilizer
Built-in selectable digital test pattern generation
Pin-programmable power-down function
Available in 48-lead LFCSP
APPLICATIONS
Battery-powered instruments
Handheld scope meters
Low cost digital oscilloscopes
OTS: video over fiber
8-Bit, 500 MSPS, 1.8 V
Analog-to-Digital Converter (ADC)
AD9286
GENERAL DESCRIPTION
The AD9286 is an 8-bit, monolithic sampling, analog-to-digital
converter (ADC) that supports interleaved operation and is
optimized for low cost, low power, and ease of use. Each ADC
operates at up to a 250 MSPS conversion rate with outstanding
dynamic performance.
The AD9286 takes a single sample clock and, with an on-chip
clock divider, time interleaves the two ADC cores (each running
at one-half the clock frequency) to achieve the rated 500 MSPS.
By using the SPI, the user can accurately adjust the timing of the
sampling edge per ADC to minimize the image spur energy.
The ADC requires a single 1.8 V supply and an encode clock for
full performance operation. No external reference components
are required for many applications. The digital outputs are LVDS
compatible.
The AD9286 is available in a Pb-free, 48-lead LFCSP that is
specified over the industrial temperature range of −40°C to +85°C.
PRODUCT HIGHLIGHTS
1. Integrated 8-Bit, 500 MSPS ADC.
2. Single 1.8 V Supply Operation with LVDS Outputs.
3. Power-Down Option Controlled via a Pin-Programmable
Setting.
FUNCTIONAL BLOCK DIAGRAM
SDIO/
PWDN CSB SCLK OE
CLK+
CLK–
VIN1+
VIN1–
VCM
VREF
1.0V
VREF
REF
SELECT
ADC
SPI
×1.5 CLOCK
MANAGEMENT
VIN2–
VIN2+
AUXCLK–
AUXCLK+
ADC
DCO
GENERATION
AD9286
RBIAS AUXCLKEN AGND
AVDD DRVDD DRGND
Figure 1.
D7+ (MSB), D7– (MSB)
D0+ (LSB), D0– (LSB)
DCO+
DCO–
Rev. C
Document Feedback
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responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
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Tel: 781.329.4700 ©2011–2015 Analog Devices, Inc. All rights reserved.
Technical Support
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