FUNCTIONAL BLOCK DIAGRAM
REV.B
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a
AD9050
FEATURES
太阳照常升起电影解析Low Power: 315 mW @ 40 MSPS, 345 mW @ 60 MSPS On-Chip T/H, Reference
Single +5 V Power Supply Operation Selectable 5 V or 3 V Logic I/O
SNR: 53 dB Minimum at 10 MHz w/40 MSPS APPLICATIONS Medical Imaging
Instrumentation
Digital Communications Professional Video
PRODUCT DESCRIPTION
The AD9050 is a complete 10-bit monolithic sampling analog-to-digital converter (ADC) with an onboard track-and-hold and reference. The unit is designed for low cost, high performance applicati
ons and requires only +5 V and an encode clock to achieve 40 MSPS or 60MSPS sample rates with 10-bit resolution.The encode clock is TTL compatible and the digital outputs are CMOS; both can operate with 5 V/3 V logic, lected by the ur. The two-step architecture ud in the AD9050 is opti-mized to provide the best dynamic performance available while maintaining low power consumption.
A 2.5 V reference is included onboard, or the ur can provide an external reference voltage for gain control or matching of multiple devices. Fabricated on an advanced BiCMOS pro-cess, the AD9050 is packaged in space saving surface mount packages (SOIC, SSOP) and is specified over the industrial (–40°C to +85°C) temperature range. The 60MSPS version (AD9050BRS-60) is only available in the SSOP package.
(+3.3V ± Figure 1.Typical Connections
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.Tel: 617/329-4700World Wide Web Site: Fax: 617/326-8703© Analog Devices, Inc., 1997
10-Bit, 40 MSPS/60MSPS
A/D Converter
AD9050–SPECIFICATIONS ELECTRICAL CHARACTERISTICS Test AD9050BR/BRS AD9050BRS-60Parameter Temp
Level
Min Typ Max
Min Typ Max
Units RESOLUTION
10
10
Bits DC ACCURACY
Differential Nonlinearity +25°C I 0.75 1.75
0.85 1.85
LSB Full V 1.0 1.1LSB Integral Nonlinearity +25°C I 1.0 1.75 1.25 2.0LSB Full V 1.25
1.50
LSB No Missing Codes Full IV GUARANTEED GUARANTEED Gain Error +25°C I ±1.07.5±1.08.5% FS Gain Tempco 1Full V ±100±100ppm/°C ANALOG INPUT Input Voltage Range +25°C V 1.024 1.024V p-p Input Offt Voltage +25°C I –10+7+25–10+7+25mV Full IV –32+51–32+51mV Input Resistance +25°C I 3.5 5.0 6.5 3.5 5.0 6.5
k ΩInput Capacitance +25°C V 55pF Analog Bandwidth +25°C V 100100MHz BANDGAP REFERENCE Output Voltage
+25°C I 2.4 2.5 2.6 2.4 2.5 2.6
企业微博
V
Temperature Coefficient 1
Full V ±50
±50
模板的英文ppm/°C SWITCHING PERFORMANCE Maximum Conversion Rate +25°C I 40
60
MSPS Minimum Conversion Rate +25°C IV 1.53 1.53MSPS Aperture Delay (t A )
+25°C V 2.7 2.7ns
Aperture Uncertainty (Jitter)+25°C V 5
5
ps, rms Output Propagation Delay (t PD )2Full IV 5
15
5
15
ns DYNAMIC PERFORMANCE Transient Respon
+25°C V 1010ns Overvoltage Recovery Time +25°C V 1010
ns ENOBS
f IN = 2.3 MHz +25°C V 8.938.93ENOBs f IN = 10.3 MHz
+25°C I 8.518.858.158.51ENOBs Signal-to-Noi Ratio (SINAD)3f IN = 2.3 MHz +25°C V 55.555.5dB f IN = 10.3 MHz +25°C I 53
5551
53dB Signal-to-Noi Ratio (Without Harmonics)f IN = 2.3 MHz +25°C V 5656dB f IN = 10.3 MHz
+25°C I 53.555.551.5
54.0dB
2nd Harmonic Distortion f IN = 2.3 MHz +25°C V –69–69dBc f IN = 10.3 MHz
+25°C I –67–60–64–58.5dBc 3rd Harmonic Distortion f IN = 2.3 MHz +25°C V –75–75dBc f IN = 10.3 MHz
+25°C I –70–58–62–57.5dBc Two-Tone Intermodulation Distortion (IMD)4+25°C V 6565dBc Different
ial Pha +25°C V 0.150.15Degrees Differential Gain
+25°C
V
0.25
0.25
%
一千年以前
REV. B
–2–(V D
, V DD
课堂总结= +5 V; internal reference; ENCODE = 40 MSPS for BR/BRS, 60 MSPS for BRS-60
unless otherwi noted)
Test AD9050BR/BRS AD9050BRS-60
Parameter Temp Level Min Typ Max Min Typ Max Units ENCODE INPUT
Logic “1” Voltage Full IV 2.0 2.0V
Logic “0” Voltage Full IV0.80.8V
Logic “1” Current Full IV11µA Logic “0” Current Full IV11µA
Input Capacitance+25°C V1010pF Encode Pul Width High (t EH)+25°C IV10166 6.7166ns Encode Pul Width Low (t EL)+25°C IV10166 6.7166ns DIGITAL OUTPUTS
Logic “1” Voltage Full IV 4.95 4.95V
Logic “0” Voltage Full IV0.050.05V
Logic “1” Voltage (3.0 V DD)Full IV 2.95 2.95V
Logic “0” Voltage (3.0 V DD)Full IV0.050.05V Output Coding Offt Binary Code Offt Binary Code
POWER SUPPLY
V D, V DD Supply Current5Full IV406380406987.2mA Power Dissipation5Full IV315400345486mW Power Supply Rejection Ratio
(PSRR)6+25°C I±10±10mV/V NOTES
1“Gain Tempco” is for converter only; “Temperature Coefficient” is for bandgap reference only.
2Output propagation delay (t
PD
) is measured from the 50% point of the rising edge of the encode command to the midpoint of the digital outputs with 10 pF maximum loads.
3RMS signal to rms noi with analog input signal 0.5 dB below full scale at specified frequency for BR/BRS, 1.0 dB below full scale for BRS-60.
4Intermodulation measured relative to either tone with analog input frequencies of 9.5 MHz and 9.9 MHz at 7 dB below full scale.
5Power dissipation is measured at full update rate with AIN of 10.3 MHz and digital outputs loaded with 10 pF maximum. See Figure 4 for power dissipation at other conditions.
6Measured as the ratio of the change in offt voltage for 5% change in +V
D
.
Specifications subject to change without notice.
AD9050
EXPLANATION OF TEST LEVELS
Test Level
怎么夸男生I–100% Production Tested.
IV–Parameter is guaranteed by design and characteriza-tion testing.
V–Parameter is a typical value only.ABSOLUTE MAXIMUM RATINGS*
V D, V DD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+7 V ANALOG IN . . . . . . . . . . . . . . . . . . . . . .–1.0 V to V D + 1.0 V Digital Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . .–0.5 V to V D V REF Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .–0.5 V to V D Digital Output Current . . . . . . . . . . . . . . . . . . . . . . . . .20 mA Operating Temperature
AD9050BR/BRS/BRS-60 . . . . . . . . . . . . . . .–40°C to +85°C Storage Temperature . . . . . . . . . . . . . . . . . . .–65°C to +150°C *Stress above tho listed under Absolute Maximum Ratings may cau perma-nent damage to the device. This is a stress rating only; functional operation of the device at the or any other conditions above tho indicated in the operational ctions of this specification is not implied. Exposure to absolute maximum ratings for extended periods may effect device reliability.
ORDERING GUIDE
Model Temperature Range Package Option*
AD9050BR–40°C to +85°C R-28
AD9050BRS–40°C to +85°C RS-28
AD9050BRS-60–40°C to +85°C RS-28
*R = Small Outline (SO); RS = Shrink Small Outline (SSOP).
REV. B–3–
AD9050
–4–REV. B
Table I.AD9050 Digital Coding (Single Ended Input AIN, AINB Bypasd to GND)
ESD (electrostatic discharge) nsitive device. Electrostatic charges as high as 4000V readily accumulate on the human body and test equipment and can discharge without detection.Although the AD9050 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.
AD9050
成语接龙大全
–5–
天亮了歌词REV. B AIN
ENCODE
DIGITAL OUTPUTS
MIN
TYP MAX
t A APERTURE DELAY 2.7ns
t EH PULSE WIDTH HIGH 10ns*166ns t EL PULSE WIDTH LOW 10ns*166ns t PD
OUTPUT PROP DELAY
5.0ns
8.2ns
15.0ns *FOR BR/BRS, SEE SPECIFICATION TABLE
Figure 2.Timing Diagram
AINB (Pin 9)V V
VREF IN (Pin 4)
BF
V DD (Pins 20, 22)D0–D9, OR
V ENCODE (Pin 13)
V VREF OUT
(Pin 3)
Figure 3.Equivalent Circuits
Output Stage
Encode Input
Analog Input V REF Output
Reference Circuit
