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PDF AD9012 Data sheet ( Hoja de datos )
| Número de pieza | AD9012 | |
| Descripción | High Speed 8-Bit TTL A/D Converter | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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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.
1 page  
ANALOG
INPUT
ENCODE
OUTPUT
DATA
N
APERTURE
DELAY
N+1
t PD
N–1
N
Figure 2. Timing Diagram
N+2
N+1
؉5.0V
ENCODE
ANALOG
INPUT
؉VREF
R
؉5.0V
R/2
REFMID
R/2
؊5.2V
256 COMPARATOR
CELLS
R
؊VREF
Figure 3. Input Output Circuits
AD9012
DIGITAL
OUTPUTS
DIE LAYOUT AND MECHANICAL INFORMATION
Die Dimensions . . . . . 111 mils × 123 mils × 15 mils (± 2) mils
Pad Dimensions . . . . . . . . . . . . . . . . . . . . . . . . 4 mils × 4 mils
Metallization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Gold
Backing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . None
Substrate Potential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –VS
Passivation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Nitride
Die Attach . . . . . . . . . . . . . . . . . . . . Gold Eutectic (Ceramic)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Epoxy (Plastic)
Bond Wire . . . . . . . . 1 mil to 1.3 mil Gold; Gold Ball Bonding
–5.2V
0.1F
+5.0V
0.1F
ONE JUMPER
PER BOARD
AD1
100⍀
AD2
–2.0V
510⍀
–VS +VS
OVERFLOW
AIN D8 (MSB)
AD9012
ENCODE
D7
D6
D5
–VREF
D4
VH
+VREF
D3
D2
DD11((LLSSBB))
DIGITAL
GROUND
ANALOG
GROUND
1k⍀
1k⍀
1k⍀
1k⍀
1k⍀
1k⍀
1k⍀
1k⍀
1k⍀
LOAD
RESISTORS
ALL RESISTORS ؎5%
ALL CAPACITORS ؎20%
ALL SUPPLY VOLTAGES ؎5%
OPTION #1 (STATIC) AD1 = –2.0V; AD2 = +2.4V
OPTION #2 (DYNAMIC) SEE WAVEFORMS
AD1
AD2
640s
5s
0V
–2V
+2.4V
+0.4V
Figure 4. Burn-In Diagram
REV. F
–5–
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet AD9012.PDF ] | |
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