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Analog Devices Semiconductor Electronic Components Datasheet

AD9012 Datasheet

High Speed 8-Bit TTL A/D Converter

No Preview Available !

a
High Speed 8-Bit
TTL A/D Converter
AD9012
FEATURES
100 MSPS ENCODE Rate
Very Low Input Capacitance—16 pF
Low Power—1 W
TTL Compatible Outputs
MIL-STD-883 Compliant Versions Available
APPLICATIONS
Radar Guidance
Digital Oscilloscopes/ATE Equipment
Laser/Radar Warning Receivers
Digital Radio
Electronic Warfare (ECM, ECCM, ESM)
Communication/Signal Intelligence
GENERAL DESCRIPTION
The AD9012 is an 8-bit, ultrahigh speed, analog-to-digital
converter. The AD9012 is fabricated in an advanced bipolar
process that allows operation at sampling rates up to 100
megasamples/second. Functionally, the AD9012 is comprised
of 256 parallel comparator stages whose outputs are decoded
to drive the TTL compatible output latches.
The exceptionally wide large-signal analog input bandwidth of
160 MHz is due to an innovative comparator design and very
close attention to device layout considerations. The wide input
bandwidth of the AD9012 allows very accurate acquisition of
high speed pulse inputs without an external track-and-hold.
The comparator output decoding scheme minimizes false codes,
which is critical to high speed linearity.
The AD9012 is available in two grades: one with 0.5 LSB
linearity and one with 0.75 LSB linearity. Both versions are
FUNCTIONAL BLOCK DIAGRAM
OVERFLOW
INH
ANALOG IN
؉VREF
R
R
R
REFMID
R/2
R/2
R
؊VREF
ENCODE
R
AD9012
256
OVERFLOW
255 D8 (MSB)
D
E
D7
C
128
O
DL
D6
IA
NT
GC
D5
H
L
127 O
D4
G
I
C D3
2 D2
D1 (LSB)
1
GND HYSTERESIS ؊VS ؉VS
offered in an industrial grade, –25°C to +85°C, packaged in a
28-lead DIP and a 28-lead JLCC. The military temperature
range devices, –55°C to +125°C, are available in ceramic DIP
and LCC packages and are compliant to MIL-STD-883 Class B.
The AD9012 is available in versions compliant with MIL-STD-883.
Refer to the Analog Devices Military Products Databook or
current AD9012/883B data sheet for detailed specifications.
REV. F
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. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective companies.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
www.analog.com
Fax: 781/326-8703 © 2003 Analog Devices, Inc. All rights reserved.


Analog Devices Semiconductor Electronic Components Datasheet

AD9012 Datasheet

High Speed 8-Bit TTL A/D Converter

No Preview Available !

AD9012–SPECIFICATIONS
ELECTRICAL CHARACTERISTICS (+VS = +5.0 V; –VS = –5.2 V; Differential Reference Voltage = 2.0 V; unless otherwise noted.)
Parameter
Test AD9012AQ/AJ
AD9012BQ/BJ
AD9012SQ/SE AD9012TQ/TE
Temp Level Min Typ Max Min Typ Max Min Typ Max Min Typ Max Unit
RESOLUTION
DC ACCURACY
Differential Linearity
Integral Linearity
No Missing Codes
25°C
Full
25°C
Full
Full
INITIAL OFFSET ERROR
Top of Reference Ladder
Bottom of Reference Ladder
Offset Drift Coefficient
25°C
Full
25°C
Full
Full
ANALOG INPUT
Input Bias Current1
Input Resistance
Input Capacitance
Large Signal Bandwidth2
Analog Input Slew Rate3
25°C
Full
25°C
25°C
25°C
25°C
REFERENCE INPUT
Reference Ladder Resistance
Ladder Temperature Coefficient
Reference Input Bandwidth
25°C
25°C
DYNAMIC PERFORMANCE
Conversion Rate
Aperture Delay
Aperture Uncertainty (Jitter)
Output Delay (tPD)4, 5
Transient Response6
Overvoltage Recovery Time7
Output Rise Time4
Output Fall Time4
Output Time Skew4, 8
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
25°C
ENCODE INPUT
Logic “1” Voltage4
Logic “0” Voltage4
Logic “1” Current
Logic “0” Current
Input Capacitance
ENCODE Pulsewidth (Low)9
ENCODE Pulsewidth (High)9
Full
Full
Full
Full
25°C
25°C
25°C
OVERFLOW INHIBIT INPUT
0 V Input Current
Full
AC LINEARITY10
Effective Bits11
In-Band Harmonics
DC to 1.23 MHz
DC to 9.3 MHz
DC to 19.3 MHz
Signal-to-Noise Ratio12
Noise Power Ratio13
25°C
25°C
25°C
25°C
25°C
25°C
DIGITAL OUTPUT
Logic “1” Voltage
Logic “0” Voltage
Full
Full
POWER SUPPLY14
Positive Supply Current (+5.0 V) 25°C
Full
Supply Current (–5.2 V)
25°C
Full
Nominal Power Dissipation
25°C
Reference Ladder Dissipation 25°C
Power Supply Rejection Ratio15 25°C
I
VI
I
VI
VI
I
VI
I
VI
V
I
VI
I
III
V
V
VI
V
V
I
V
V
I
V
V
I
I
V
VI
VI
VI
VI
V
I
I
VI
V
I
V
V
I
V
VI
VI
I
VI
I
VI
V
V
I
8 8 8 8 Bits
0.6 0.75
0.4
1.0
0.6 1.0
0.4
1.2
Guaranteed
Guaranteed
0.5 0.6
0.75
0.5 0.6
1.2
Guaranteed
0.75 0.4 0.5
1.0 0.75
1.0 0.4 0.5
1.2 1.2
Guaranteed
LSB
LSB
LSB
LSB
7 15
18
6 10
13
25
7 15
18
6 10
13
25
7 15
18
6 10
13
25
7 15
18
6 10
13
25
mV
mV
mV
mV
µV/°C
60 200
200
25 200
25
16 18
160
440
60 200
200
200 25
16 18
160
440
60 200
200
200 25
16 18
160
440
60 200
200
200
16 18
160
440
µA
µA
k
pF
MHz
V/µs
40 80 110 40
0.25
10
80 110 40
0.25
10
80 110 40
0.25
10
80 110
0.25
10
/°C
MHz
75 100
75
3.8
15
4 4.9 11 4
8
8
6.6 8.0
3.3 4.3
3.0
100 75
3.8
15
4.9 11 4
8
8
6.6 8.0
3.3 4.3
3.0
100
3.8
15
4.9 11
8
8
6.6 8.0
3.3 4.3
3.0
75
4
100
3.8
15
4.9 11
8
8
6.6 8.0
3.3 4.3
3.0
MSPS
ns
ps
ns
ns
ns
ns
ns
ns
2.0 2.0 2.0 2.0 V
0.8 0.8 0.8 0.8 V
250 250 250 250 µA
400 400 400 400 µA
2.5 2.5 2.5 2.5 pF
2.5 2.5 2.5 2.5 ns
2.5 2.5 2.5 2.5 ns
200 250
200 250
200 250
200 250 µA
7.5
48 55
50
44
46 47.6
37
7.5
48 55
50
44
46 47.6
37
7.5
48 55
50
44
46 47.6
37
7.5
48 55
50
44
46 47.6
37
Bits
dBc
dBc
dBc
dBc
dBc
2.4 2.4
0.4
2.4
0.4
2.4
0.4
V
0.4 V
33 45
48
152 179
191
955
44
0.85 2.5
33 45
48
152 179
191
955
44
0.85 2.5
33 45
48
152 179
191
955
44
0.8 2.5
33 45
48
152 179
191
955
44
0.8 2.5
mA
mA
mA
mA
mW
mW
mV/V
–2– REV. F


Part Number AD9012
Description High Speed 8-Bit TTL A/D Converter
Maker Analog Devices
Total Page 8 Pages
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