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Details, datasheet, quote on part number:AD9020
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| Part: | AD9020 |
| Category: | Data Conversion => ADC (Analog to Digital Converters) => 10-14 bit |
| Description: | 10-Bit 60 MSPS A/D Converter |
| Company: | Analog Devices |
| Datasheet: | Download AD9020 datasheet File size : 209 kB |
| Request For quote: | Find where to buy AD9020
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Datasheet text preview:
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FEATURES Monolithic 10-Bit/60 MSPS Converter TTL Outputs Bipolar ( 1.75 V) Analog Input 56 dB SNR @ 2.3 MHz Input Low (45 pF) Input Capacitance MIL-STD-883 Compliant Versions Available APPLICATIONS Digital Oscilloscopes Medical Imaging Professional Video Radar Warning/Guidance Systems Infrared Systems
ANALOG IN 8 9 OVERFLOW +V REF 12 +V SENSE 11 R/2 512
10-Bit 60 MSPS A/D Converter AD9020
FUNCTIONAL BLOCK DIAGRAM
MSB LSBS INVERT INVERT 61 59
R 385 C R/2 3/4 REF 7 R/2 384 O M D P R A C R R 257 A R/2 1/2 REF 1 T E R/2 R O L R 129 R/2 1/4 REF 63 R/2 R 128 C H E S R 2 R 1 R/2 V SENSE 57 VREF 56 ENCODE 14 G A I T C H O 256 R 1024 L 10 C T OVERFLOW O L D OVERFLOW A E 51 OVERFLOW 50 D9 (MSB) 49 D8 48 D7 47 D6 46 D5 23 D4 22 D3 21 D 2 20 D1 19 D0 (LSB)
GENERAL DESCRIPTION
The AD9020 A/D converter is a 10-bit monolithic converter capable of word rates of 60 MSPS and above. Innovative architecture using 512 input comparators instead of the traditional 1024 required by other flash converters reduces input capacitance and improves linearity. Encode and outputs are TTL-compatible, making the AD9020 an ideal candidate for use in low power systems. An overflow bit is provided to indicate analog input signals greater than +VSENSE. Voltage sense lines are provided to insure accurate driving of the ± VREF voltages applied to the units. Quarter-point taps on the resistor ladder help optimize the integral linearity of the unit. Either 68-pin ceramic leaded (gull wing) packages or ceramic LCCs are available and are specifically designed for low thermal impedances. Two performance grades for temperatures of both 0°C to +70°C and 55°C to +125°C ranges are offered to allow the user to select the linearity best suited for each application. Dynamic performance is fully characterized and production tested at +25°C. MIL-STD-883 units are available. The AD9020 A/D Converter is available in versions compliant with MIL-STD-883. Refer to the Analog Devices Military Products Databook or current AD9020/883B data sheet for detailed specifications.
VS
+V S
GROUND
REV. A
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: 617/329-4700 World Wide Web Site: http://www.analog.com Fax: 617/326-8703 © Analog Devices, Inc., 1997
AD9020SPECIFICATIONS
ABSOLUTE MAXIMUM RATINGS 1
+ VS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . + 6 V VS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 V ANALOG IN . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 V to +2 V +VREF, VREF, 3/4REF, 1/2REF, 1/4REF . . . . . . . . . . 2 V to +2 V +VREF to VREF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.0 V DIGITAL INPUTS . . . . . . . . . . . . . . . . . . . . . . .0.5 V to +VS
3/4REF, 1/2REF, 1/4REF Current . . . . . . . . . . . . . . . . . . . ± 10 mA Digital Output Current . . . . . . . . . . . . . . . . . . . . . . . . . 20 mA Operating Temperature AD9020JE/KE/JZ/KZ . . . . . . . . . . . . . . . . . . 0°C to +70°C Storage Temperature . . . . . . . . . . . . . . . . . . . 65°C to +150°C Maximum Junction Temperature2 . . . . . . . . . . . . . . . . +175°C Lead Soldering Temp (10 sec) . . . . . . . . . . . . . . . . . . . +300°C
ELECTRICAL CHARACTERISTICS (
Parameter (Conditions) RESOLUTION DC ACCURACY Differential Nonlinearity Integral Nonlinearity No Missing Codes ANALOG INPUT Input Bias Current4 Input Resistance Input Capacitance4 Analog Bandwidth REFERENCE INPUT Reference Ladder Resistance Ladder Tempco Reference Ladder Offset Top of Ladder Bottom of Ladder Offset Drift Coefficient SWITCHING PERFORMANCE Conversion Rate Aperture Delay (tA) Aperture Uncertainty (Jitter) Output Delay (tOD)5 Output Time Skew5 DYNAMIC PERFORMANCE Transient Response Overvoltage Recovery Time Effective Number of Bits (ENOB) fIN = 2.3 MHz fIN = 10.3 MHz fIN = 15.3 MHz Signal-to-Noise Ratio6 fIN = 2.3 MHz fIN = 10.3 MHz fIN = 15.3 MHz Signal-to-Noise Ratio6 (Without Harmonics) fIN = 2.3 MHz fIN = 10.3 MHz fIN = 15.3 MHz
3
VS =
Test Level
5 V;
V SENSE =
Min 10
1.75 V; ENCODE = 40 MSPS unless otherwise noted)
AD9020KE/KZ Min Typ Max 10 1.0 1.25 1.25 1.5 2.0 2.5 0.75 1.0 1.25 1.0 1.5 2.0 Guaranteed 0.4 2.0 7.0 45 175 37 0.1 90 90 90 90 45 45 50 60 1 5 10 3 10 10 1 5 10 3 10 10 8.6 8.0 7.5 54 50 47 9.0 8.4 8.0 56 53 50 90 90 90 90 56 66 1.0 2.0 Units Bits LSB LSB LSB LSB
Temp
AD9020JE/JZ Typ Max
+25°C Full +25°C Full Full + 2 5° C Full +25°C + 2 5° C +25°C +25° C Full Full +25°C Full +25°C Full Full +25°C + 2 5° C +25°C + 2 5° C + 2 5° C +25°C +25° C +25°C +25 °C +25 °C +25°C +25 °C +25 °C +25°C +25 °C +25 °C
I VI I VI VI I VI I V V I VI V I VI I VI V I V V I I V V I IV IV I I I 8.6 8.0 7.5 54 50 47 60
0.4 2.0 7.0 45 175 37 0.1 45 45 50
1.0 2.0
mA mA k pF MHz / ° C mV mV mV mV µV/°C MSPS ns ps, rms ns ns ns ns Bits Bits Bits dB dB dB
22 14
56 66
22 14
6
13 5
6
13 5
9.0 8.4 8.0 56 53 50
I I I
54 51 48
56 54 52
54 51 48
56 54 52
dB dB dB
2
REV. A
AD9020
Parameter (Conditions) Temp Test Level Min AD9020JE/JZ Typ Max AD9020KE/KZ Min Typ Max Units DYNAMIC PERFORMANCE (continued) Harmonic Distortion +25°C fIN = 2.3 MHz +25 °C fIN = 10.3 MHz +25 °C fIN = 15.3 MHz Two-Tone Intermodulation + 2 5° C Distortion Rejection7 Differential Phase +25°C Differential Gain +25°C ENCODE INPUT Logic "1" Voltage Logic "0" Voltage Logic "1" Current Logic "0" Current Input Capacitance Pulse Width (High) Pulse Width (Low) DIGITAL OUTPUTS Logic "1" Voltage (IOH = 2 mA) Logic "0" Voltage (IOL = 6 mA) POWER SUPPLY +VS Supply Current VS Supply Current Power Dissipation Power Supply Rejection Ratio (PSRR)8 Full Full Full Full +25°C +25°C +25° C Full Full +25°C Full +25° C Full +25°C Full Full
I I I V V V VI VI VI VI V I I VI VI I VI I VI I VI VI
61 55 49
67 59 53 70 0.5 1
61 55 49
67 59 53 70 0.5 1
dBc dBc dBc dBc Degree % V V µA µA pF ns ns V V
2.0 0.8 20 800 5 6 6 2.4 0.4 440 140 2.8 530 542 170 177 3.3 3.4 10
2.0 0.8 20 800 5 6 6 2.4
440 140 2.8
530 542 170 177 3.3 3.4 10
mA mA mA mA W W mV/V
6
6
NOTES 1 Absolute maximum ratings are limiting values to be applied individually, and beyond which the service ability of the circuit may be impaired. Functional operability is not necessarily implied. Exposure to absolute maximum rating conditions for an extended period of time may affect device reliability. 2 Typical thermal impedances (part soldered onto board): 68-pin leaded ceramic chip carrier: JC = 1°C/W; JA = 17°C/W (no air flow); JA = 15°C/W (air flow = 500 LFM). 68-pin ceramic LCC: JC = 2.6°C/W; JA = 15°C/W (no air flow); JA = 13°C/W (air flow = 500 LFM). 3 3/4REF, 1/2REF, and 1/4REF reference ladder taps are driven from dc sources at +0.875 V, 0 V, and 0.875 V, respectively. Accuracy of the overflow comparator is not tested and not included in linearity specifications. 4 Measured with ANALOG IN = +V SENSE. 5 Output delay measured as worst-case time from 50% point of the rising edge of ENCODE to 50% point of the slowest rising or falling edge of D 0D9. Output skew measured as worst-case difference in output delay among D 0D9. 6 RMS signal to rms noise with analog input signal 1 dB below full scale at specified frequency. 7 Intermodulation measured with analog input frequencies of 2.3 MHz and 3.0 MHz at 7 dB below full scale. 8 Measured as the ratio of the worst-case change in transition voltage of a single comparator for a 5% change in +V S or VS. Specifications subject to change without notice.
REV. A
3
AD9020
EXPLANATION OF TEST LEVELS ORDERING GUIDE
Device AD9020JZ AD9020JE AD9020KZ AD9020KE AD9020SZ/883 AD9020SE/883 AD9020TZ/883 AD9020TE/883 AD9020/PCB Temperature Range 0°C to +70°C 0°C to +70°C 0°C to +70°C 0°C to +70°C 55°C to +125°C 55°C to +125°C 55°C to +125°C 55°C to +125°C 0°C to +70°C Description 68-Pin Leaded Ceramic 68-Terminal Ceramic LCC 68-Pin Leaded Ceramic 68-Terminal Ceramic LCC 68-Pin Leaded Ceramic 68-Terminal Ceramic LCC 68-Pin Leaded Ceramic 68-Terminal Ceramic LCC Evaluation Board Package Option* Z-68 E-68A Z-68 E-68A Z-68 E-68A Z-68 E-68A
Test Level 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. VI All devices are 100% production tested at +25°C. 100% production tested at temperature extremes for extended temperature devices; sample tested at temperature extremes for commercial/industrial devices.
*E = Ceramic Leadless Chip Carrier; Z = Ceramic Leaded Chip Carrier.
DIE LAYOUT AND MECHANICAL INFORMATION
+ 5.0V 0.1 µF 3,6,15,18,25,30,33,34, 37,40,45,52,55,65,68 8 9 510 AD2 +2V 2V 14 ENCODE D5 D9 12 +VREF 56 _ VREF GROUND VS 4,5,13,17, 27,31,32, 36,38,39, 43,53,66,67 ANALOG IN +VS D0 D4 19 23 46 51 510
Die Dimensions . . . . . . . . . . . . . . . 206 140 15 (± 2) mils Pad Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 4 mils Metalization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Gold Backing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . None Substrate Potential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VS Passivation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Nitride
100 AD1
510
AD9020
59 LSBs INVERT 61 MSB INVERT
2,16,28,29,35, 41,42,54,64 STATIC: AD1 = 2V; AD2 = +2.4V DYNAMIC: AD1 = ±2V TRIANGLE WAVE AD2 = TTL PULSE TRAIN 0.1µF
5.2V
AD9020 Burn-In Circuit
4
REV. A
AD9020
ANALOG IN ANALOG IN 3/4 REF +VS GND GND +VS V S 1/2 REF +VS GND GND +VS VS 1/4 REF NC MSB INVERT
9 NC +VSENSE +VREF GND ENCODE +V S V S GND +V S (LSB) D 0 D1 D2 D3 D4 NC +V S NC 10
61 60
AD9020
TOP VIEW (Not to Scale)
26 27
44 43
NC LSBs INVERT NC V SENSE V REF +VS V S GND +VS OVERFLOW D9 (MSB) D8 D7 D6 D5 +VS NC
GND VS V S +V S GND GND +VS +VS VS GND +V S GND GND +VS VS VS GND
NC = NO CONNECT
AD9020 PIN FUNCTION DESCRIPTIONS
Pin No. 1 2, 16, 28, 29, 35, 41, 42, 54, 64 3, 6, 15, 18, 25, 30, 33, 34, 37, 40, 45, 52, 55, 65, 68 4, 5, 13, 17, 27, 31, 32, 36, 38, 39, 43, 53, 66, 67 7 8, 9 11 12 14 1923, 4650 51 56 57 59 61 63 REV. A
Name 1 / 2 REF VS + VS GROUND 3 / 4 REF ANALOG IN + V SENSE + V REF ENCODE D0D9 OVERFLOW VR E F VS E N S E LSBs INVERT MSB INVERT 1 / 4 REF
Function Midpoint of internal reference ladder. Negative supply voltage; nominally 5.0 V ± 5%. Positive supply voltage; nominally +5 V ± 5%. All ground pins should be connected together and to low impedance ground plane. Three-quarter point of internal reference ladder. Analog input; nominally between ± 1.75 V. Voltage sense line to most positive point on internal resistor ladder. Normally +1.75 V. Voltage force connection for top of internal reference ladder. Normally driven to provide +1.75 V at +VSENSE. TTL-compatible convert command used to begin digitizing process. TTL-compatible digital output data. TTL-compatible output indicating ANALOG IN > +VSENSE. Voltage force connection for bottom of internal reference ladder. Normally driven to provide 1.75 V at VSENSE. Voltage sense line to most negative point on internal resistor ladder. Normally 1.75 V. Normally grounded. When connected to +VS, lower order bits (D0D8) are inverted. Normally grounded. When connected to +VS, most significant bit (MSB; D9) is inverted. One-quarter point of internal reference ladder.
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