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PDF AD10677 Data sheet ( Hoja de datos )
| Número de pieza | AD10677 | |
| Descripción | 65 MSPS A/D Converter | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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FEATURES
65 MSPS sample rate
80 dBFS signal-to-noise ratio
Transformer-coupled analog input
Single PECL clock source
Digital outputs
True binary format
3.3 V and 5 V CMOS-compatible
APPLICATIONS
Low signature radar
Medical imaging
Communications instrumentation
Instrumentation
Antenna array processing
GENERAL DESCRIPTION
The AD10677 is a 16-bit, high performance, analog-to-digital
converter (ADC) for applications that demand increased SNR
levels. Exceptional noise performance and a typical signal-to-
noise ratio of 80 dBFS are obtained by digitally postprocessing
the outputs of four ADCs. A single analog input and PECL
sampling clock and 3.3 V and 5 V power supplies are required.
The AD10677 is assembled using a 0.062-inch laminate board
with three sets of connector interface pads to accommodate
analog and digital isolation. Analog Devices recommends
using the FSI-110-03-G-D-AD-K-TR connector from Samtec.
The overall card fits a 2.2 inch × 2.8 inch PCB specified from
0°C to 70°C.
16-Bit, 65 MSPS A/D Converter
AD10677
FUNCTIONAL BLOCK DIAGRAM
AIN
AIN
ANALOG
POWER
AGND
+5VA
+3.3VE
AGND
AD10677
ADC
ADC
ADC
ADC
14
DOUT0
14
DIGITAL
POST-
PROCES-
14 SING
DOUT15
14
OUTPUT
DATA
BITS
CLOCK
DISTRIBUTION CIRCUIT
DGND +3.3V DGND
ENCODE ENCODE
DIGITAL POWER
Figure 1.
PRODUCT HIGHLIGHTS
1. Guaranteed sample rate of 65 MSPS.
2. Input signal conditioning with optimized noise
performance.
3. Fully tested and guaranteed performance.
Rev. D
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 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.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2006 Analog Devices, Inc. All rights reserved.
1 page  
ABSOLUTE MAXIMUM RATINGS
Table 5.
Parameter
AVCC to AGND
EVCC to AGND
VDD to DGND
Analog Input Voltage
Analog Input Current
Encode Input Voltage
Digital Output Voltage
Maximum Junction Temperature
Storage Temperature Range Ambient
Maximum Operating Temperature Ambient
Rating
0 V to 7 V
0 V to 6 V
–0.5 V to +3.8 V
0 V to AVCC
25 mA
0 V to 5 V
–0.5 V to VDD
150°C
–65°C to +150°C
92°C
Table 6. Output Coding (True Binary)
Code
AIN (V)
Digital Output
65535
+1.1
1111 1111 1111 1111
..
..
..
32768
0
1000 0000 0000 0000
32767
–0.000034
0111 1111 1111 1111
..
..
..
0 –1.1 0000 0000 0000 0000
AD10677
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
EXPLANATION OF TEST LEVELS
I. 100% production tested.
II 100% production tested at 25°C and sample tested at
specified temperatures.
III. Sample tested only.
IV. Parameter is guaranteed by design and characterization
testing.
V. Parameter is a typical value only.
100% production tested at 25°C; guaranteed by design and
characterization testing for industrial temperature range; 100%
production tested at temperature extremes for military devices.
OPERATING RANGE
Operating ambient temperature range: 0°C to 70°C. See the
Thermal Considerations section.
ESD CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the
human body and test equipment and can discharge without detection. Although this product features
proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy
electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance
degradation or loss of functionality.
Rev. D | Page 5 of 20
5 Page 
TERMINOLOGY
Analog Bandwidth
The analog input frequency at which the spectral power of the
fundamental frequency (as determined by the FFT analysis) is
reduced by 3 dB.
Aperture Delay
The delay between the 50% point on the rising edge of the
ENCODE command and the instant at which the analog input
is sampled.
Aperture Uncertainty (Jitter)
The sample-to-sample variation in aperture delay.
Differential Nonlinearity (DNL)
The deviation of any code from an ideal 1 LSB step.
Encode Pulse Width/Duty Cycle
Pulse width high is the minimum amount of time the encode
pulse should be left in a Logic 1 state to achieve rated perform-
ance; pulse width low is the minimum time the encode pulse
should be left in a low state. At a given clock rate, these speci-
fications define an acceptable encode duty cycle.
Integral Nonlinearity (INL)
The deviation of the transfer function from a reference line
measured in fractions of 1 LSB using a best straight line
determined by a least square curve fit.
Harmonic Distortion
The ratio of the rms signal amplitude to the rms value of the
worst harmonic component.
Maximum Conversion Rate
The encode rate at which parametric testing is performed.
Minimum Conversion Rate
The encode rate at which the SNR of the lowest analog signal
frequency drops by no more than 3 dB or less below the
guaranteed limit.
AD10677
Output Propagation Delay
The delay between the 50% point of the rising edge of the
ENCODE command and the time when all output data bits
are within valid logic levels.
Power Supply Rejection Ratio (PSRR)
The ratio of a change in output offset voltage to a change in
power supply voltage.
Signal-to-Noise and Distortion (SINAD)
The ratio of the rms signal amplitude (set at 1 dB below full
scale) to the rms value of the sum of all other spectral compo-
nents, including the first five harmonics and dc. Can be
reported in dBc (that is, degrades as signal level is lowered) or
in dBFS (always related back to converter full scale).
Signal-to-Noise Ratio (SNR)
The ratio of the rms signal amplitude (set at 1 dB below full scale)
to the rms value of the sum of all other spectral components,
excluding the first five harmonics and dc. Can be reported in dBc
(that is, degrades as the signal level is lowered) or in dBFS
(always related back to converter full scale).
Spurious-Free Dynamic Range (SFDR)
The ratio of the rms signal amplitude to the rms value of the
peak spurious spectral component. The peak spurious compo-
nent may or may not be an harmonic. SFDR can be reported in
dBc (that is, degrades as signal level is lowered) or in dBFS
(always related back to converter full scale).
Two-Tone Intermodulation Distortion Rejection (IMD)
The ratio of the rms value of an input tone to the rms value of the
worst third-order intermodulation product; reported in dBc.
Voltage Standing-Wave Ratio (VSWR)
The ratio of the amplitude of the elective field at a voltage
maximum to that at an adjacent voltage minimum.
Rev. D | Page 11 of 20
11 Page | ||
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