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PDF AD9060 Data sheet ( Hoja de datos )
| Número de pieza | AD9060 | |
| Descripción | 10-Bit 75 MSPS A/D Converter | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de AD9060 (archivo pdf) en la parte inferior de esta página. Total 12 Páginas | ||
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a
10-Bit 75 MSPS
A/D Converter
AD9060
FEATURES
Monolithic 10-Bit/75 MSPS Converter
ECL Outputs
Bipolar (؎1.75 V) Analog Input
57 dB SNR @ 2.3 MHz Input
Low (45 pF) Input Capacitance
APPLICATIONS
Digital Oscilloscopes
Medical Imaging
Professional Video
Radar Warning/Guidance Systems
Infrared Systems
GENERAL DESCRIPTION
The AD9060 A/D converter is a 10-bit monolithic converter
capable of word rates of 75 MSPS and above. Innovative
architecture using 512 input comparators instead of the tradi-
tional 1024 required by other flash converters reduces input
capacitance and improves linearity.
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
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.
The AD9060 is available in a 68-lead ceramic leaded (gull wing)
chip carrier package specifically designed for low thermal imped-
ances. 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.
AIN
+VREF
+VSENSE
FUNCTIONAL BLOCK DIAGRAM
OVERFLOW
MSB LSBs
INVERT INVERT
61 59
R/2
512
AD9060
3/4REF
R
R/2
R/2
R
R
1/2REF
R/2
R/2
R
R
1/4REF 63
R/2
R/2
R
385
384
C 51 OVERFLOW
O
M 50 D9 (MSB)
257
PD
AE
RC
A
T
OVERFLOW
O
D
OVERFLOW
OE
L
A
49 D8
48 D7
47 D6
R T 46 D5
256 L C
L
A
T
1024
O
G
I
10
H 23 D4
22 D3
CC
H
21 D2
129 E
S
20 D1
19 D0 (LSB)
128
R
2
R
–VSENSE 57
–VREF 56
R/2
ENCODE
ENCODE
1
–VS +VS GND
REV. B
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  
PIN CONFIGURATION
AD9060
NC
+VSENSE
+VREF
ENCODE
ENCODE
+VS
–VS
GND
GND
(LSB) D0
D1
D2
D3
D4
NC
GND
NC
9
10
26
27
AD9060
TOP VIEW
(Not to Scale)
61
60
44
43
NC
LSBs INVERT
NC
–VSENSE
–VREF
NC
–VS
GND
GND
OVERFLOW
D9 (MSB)
D8
D7
D6
D5
GND
NC
NC = NO CONNECT
Pin No.
1
2, 16, 28, 29, 35, 41, 42, 54, 64
3, 6, 15, 30, 33, 34, 37, 40,
65, 68
4, 5, 17, 18, 25, 27, 31, 32, 36,
38, 39, 43, 45, 52, 53, 66, 67
7
8, 9
11
12
13
14
19–23, 46–50
51
56
57
59
61
63
PIN FUNCTION DESCRIPTIONS
Mnemonic
1/2REF
–VS
+VS
Function
Midpoint of Internal Reference Ladder.
Negative Supply Voltage; Nominally –5.2 V ± 5%.
Positive Supply Voltage; Nominally +5 V ± 5%.
GND
3/4REF
AIN
+VSENSE
+VREF
ENCODE
ENCODE
D0–D9
OVERFLOW
–VREF
–VSENSE
LSBs INVERT
MSB INVERT
1/4REF
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.
Differential ECL Convert Signal, Starts Digitizing Process.
ECL Compatible Convert Command, Used to Begin Digitizing Process.
ECL Compatible Digital Output Data.
ECL Compatible Output Indicating AIN > +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
(D0–D8) are inverted. Not ECL compatible.
Normally Grounded. When connected to +VS, most significant bit
(MSB; D9) is inverted. Not ECL compatible.
One-Quarter Point of Internal Reference Ladder.
REV. B
–5–
5 Page 
AD9060
AD9060/PCB EVALUATION BOARD
The AD9060/PCB Evaluation Board is available from the factory
and is shown here in block diagram form. The board includes a
reference circuit that allows the user to adjust both references and
the quarter-point voltages. The AD9617 is included as the drive
amplifier, and the user can configure the gain from –1 to –15.
On-board reconstruction of the digital data is provided through
the AD9712, a 12-bit monolithic DAC. The analog and recon-
structed waveforms can be summed on the board to allow the
user to observe the linearity of the AD9060 and the effects of
the quarter-point voltages. The digital data and an adjustable
data ready signal are available via a 37-pin edge connector.
BUFFERED
ANALOG
INPUT
200⍀
50⍀
400⍀
U5
AD9617
TO
ERROR
WAVEFORM
CIRCUIT
DUT
ANALOG
INPUT
J2
24⍀
REFERENCE
CIRCUIT
–5V +5V
–VS +VS GND
MSB INVERT
LSBs INVERT
+5V
DAC
OUT
AIN
+VREF
+VSENSE
3/4REF
1/2REF
1/4REF
–VSENSE
–VREF
(LSB) D0
D1
D2
D3
AD9060
DUT
D4
D5
D6
D7
D8
(MSB) D9
OVERFLOW
ENCODE
ENCODE
D
D
D
D
D ECL
D LATCHES Q
D
D
D
D CLK
D
DIFFERENTIAL
ECL CLOCK
AD9712 DAC IOUT
D 50⍀
TO ERROR
WAVEFORM
CIRCUIT
OUTPUT
DATA
CONNECTOR
DATA
READY
TIMING
CIRCUIT
Figure 13. PCB Evaluation Board Block Diagram
REV. B
–11–
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet AD9060.PDF ] | |
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