10-Bit 75 MSPS
A/D Converter
a
AD9060
FEATURES
FUNCTIO NAL BLO CK D IAGRAM
Monolithic 10-Bit/ 75 MSPS Converter
ECL Outputs
LSBS
MSB
INVERT
INVERT
61 59
Bipolar (؎1.75 V) Analog Input
57 dB SNR @ 2.3 MHz Input
Low (45 pF) Input Capacitance
MIL-STD-883 Com pliant Versions Available
8
9
ANALOG IN
OVERFLOW
+VREF
12
11
+VSENSE
APPLICATIONS
Digital Oscilloscopes
Medical Im aging
Professional Video
Radar Warning/ Guidance System s
Infrared System s
R/2
R
512
C
O
M
P
A
R
A
T
385
384
R/2
R/2
7
3/4REF
1/2REF
1/4REF
51 OVERFLOW
R
R
50
49
48
D9 (MSB)
GENERAL D ESCRIP TIO N
D
E
C
O
D
E
D8
D7
T he AD9060 A/D converter is a 10-bit monolithic converter ca-
pable of word rates of 75 MSPS and above. Innovative architec-
ture using 512 input comparators instead of the traditional 1024
required by other flash converters reduces input capacitance and
improves linearity.
L
A
T
257
256
OVERFLOW
1024
OVERFLOW
D6
47
46
23
R/2
R/2
1
D5
D4
O
R
L
O
G
I
C
H
10
R
R
D3
D2
22
21
Inputs and outputs are ECL-compatible, which makes the
AD9060 the recommended choice for systems with conversion
rates >30 MSPS to minimize system noise. An overflow bit is
L
C
20 D1
D0 (LSB)
129
128
A
T
19
R/2
R/2
63
provided to indicate analog input signals greater than +VSENSE
.
Voltage sense lines are provided to ensure 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.
C
H
E
S
R
R
2
1
Either 68-pin ceramic leaded (gull wing) packages or ceramic
R
LCCs are available and specifically designed for low thermal im-
pedances. T wo 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-ST D-883 units are available.
R/2
–VSENSE
–VREF
57
56
ENCODE 14
13
ENCODE
GROUND
–VS
+VS
T he AD9060 A/D converter is available in versions compliant
with MIL-ST D-883. Refer to the Analog Devices Military Prod-
ucts Databook or current AD9060/883B data sheet for detailed
specifications.
REV. A
Inform ation furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assum ed by Analog Devices for its
use, nor for any infringem ents of patents or other rights of third parties
which m ay result from its use. No license is granted by im plication or
otherwise under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norw ood, MA 02062-9106, U.S.A.
Tel: 617/ 329-4700
Fax: 617/ 326-8703
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© Analog Devices, Inc., 1997