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Analog Devices Semiconductor Electronic Components Datasheet

AD9000 Datasheet

High Speed 6-Bit A/D Converter

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a
FEATURES
77 MSPS Encode Rate
Bipolar Input Range
Low Error Rate
Overflow Bit
MIL-STD-883 Compliant Versions Available
APPLICATIONS
QAM Telecommunications
Electronic Warfare (ECM, ECCM, ESM)
Radar Guidance Digitizers
High Speed
6-Bit A/D Converter
AD9000
FUNCTIONAL BLOCK DIAGRAM
GENERAL DESCRIPTION
The AD9000 is a 6-bit, high speed, analog-to-digital converter
with ECL compatible outputs and a bipolar input stage. The
AD9000 is fabricated in a high performance bipolar process that
allows encode rates up to 77 MSPS.
The AD9000 employs the standard flash converter architecture
based on 64 individual comparators which simultaneously
determine the precise analog signal level. The comparators are
followed by two stages of decoding logic, allowing the AD9000
to operate with a very low error rate. The low 35 pF input
capacitance of the AD9000 greatly simplifies the analog driver
stage. An overflow output bit is also incorporated into the
AD9000 design as is a hysteresis control pin to modify compara-
tor sensitivity.
The AD9000 is offered as both a commercial temperature range
device, 0°C to +70°C, and as an extended temperature range
device, –55°C to +125°C. Both versions are available packaged
in a 16-pin ceramic DIP. The extended temperature range
device is also available in a 28-pin ceramic LCC package. The
extended temperature range versions are offered as fully compli-
ant MIL-STD-883 Class B devices.
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


Analog Devices Semiconductor Electronic Components Datasheet

AD9000 Datasheet

High Speed 6-Bit A/D Converter

No Preview Available !

AD9000–SPECIFICATIONS
ELECTRICAL CHARACTERISTICS (Supply Voltages = –5.2 V and +5.0 V; Differential Reference Voltage = 2.0 V
unless otherwise noted)
Commercial
0؇C to +70؇C
AD9000JD
Military
–55؇C to +125؇C
AD9000SD/SE
Parameter
Temp
Min Typ
Max Min Typ Max
RESOLUTION
66
DC ACCURACY
Differential Linearity
Integral Linearity
No Missing Codes
+25°C
Full
+25°C
Full
Full
0.25 0.5
1.0
0.25 0.5
1.0
GUARANTEED
0.25 0.5
1.0
0.25 0.5
1.0
GUARANTEED
INITIAL OFFSET ERROR
Top of Reference Ladder
Bottom of Reference Ladder
Offset Drift Coefficient
+25°C
Full
+25°C
Full
Full
0.3 7/8
1.5
0.25 7/8
1.5
145
0.3 7/8
1.5
0.25 7/8
1.5
145
ANALOG INPUT
Input Voltage Range
Input Bias Current (Sampling)1
Input Bias Current (Latched)1
Input Resistance
Input Capacitance
Full Power Bandwidth2
Full
Full
Full
+25°C
+25°C
+25°C
± 2.0 V
3.0
35
20
800
20
50
± 2.0 V
3.0
35
20
800
20
50
REFERENCE INPUT3, 4
Reference Ladder Resistance
+25°C
80
200 80
200
Ladder Temperature Coefficient
0.275
0.275
Reference Input Bandwidth
+25°C
20
20
DYNAMIC PERFORMANCE5
Conversion Rate
Conversion Time (+ 1 Clock)
Aperture Delay (tD)
Aperture Uncertainty (Jitter)
Output Propagation Delay (tPD)6
Output Hold Time (tOH)7
Transient Response8
Overvoltage Recovery Time9
Output Rise Time10
Output Fall Time10
Output Time Skew
+25°C
+25°C
+25°C
+25°C
+25°C
+25°C
+25°C
+25°C
+25°C
+25°C
+25°C
50
8
8
70
2
25
13
11
0.4
75 77
20 13.3
2
25
12 8
12
14 8
14
13
11
5.0 4.5
5.0 4.5
0.4
ENCODE INPUT
Logic “l” Voltage
Logic “0” Voltage
Logic “1” Current
Logic “0” Current
Input Capacitance
ENCODE Pulse Width High (tPWH)
ENCODE Pulse Width Low (tPWL)
Full
Full
Full
Full
+25°C
+25°C
+25°C
–1.1
2.5
6.6
6.6
–1.1
–1.5 –1.5
100 100
100 100
5.0 2.5 5.0
6.6
6.6
Units
Bits
LSB
LSB
LSB
LSB
LSB
LSB
LSB
LSB
µV/°C
V
µA
µA
k
pF
MHz
/°C
MHz
MHz
ns
ns
ps
ns
ns
ns
ns
ns
ns
ns
V
V
µA
µA
pF
ns
ns
–2– REV. A


Part Number AD9000
Description High Speed 6-Bit A/D Converter
Maker Analog Devices
Total Page 8 Pages
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