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Teilenummer | AD9050 |
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Beschreibung | 10-Bit/ 40 MSPS/60 MSPS A/D Converter | |
Hersteller | Analog Devices | |
Logo | ||
Gesamt 12 Seiten a
FEATURES
Low Power: 315 mW @ 40 MSPS, 345 mW @ 60 MSPS
On-Chip T/H, Reference
Single +5 V Power Supply Operation
Selectable 5 V or 3 V Logic I/O
SNR: 53 dB Minimum at 10 MHz w/40 MSPS
APPLICATIONS
Medical Imaging
Instrumentation
Digital Communications
Professional Video
10-Bit, 40 MSPS/60 MSPS
A/D Converter
AD9050
FUNCTIONAL BLOCK DIAGRAM
AINB
AIN
ENCODE
+5V GND
+5V
AD9050
T/H
TIMING
SUM
AMP
REFERENCE CKTS
ADC
DAC
ADC
DECODE
LOGIC
10
PRODUCT DESCRIPTION
The AD9050 is a complete 10-bit monolithic sampling analog-
to-digital converter (ADC) with an onboard track-and-hold and
reference. The unit is designed for low cost, high performance
applications and requires only +5 V and an encode clock to
achieve 40 MSPS or 60 MSPS sample rates with 10-bit resolution.
The encode clock is TTL compatible and the digital outputs
are CMOS; both can operate with 5 V/3 V logic, selected by the
user. The two-step architecture used in the AD9050 is opti-
mized to provide the best dynamic performance available while
maintaining low power consumption.
A 2.5 V reference is included onboard, or the user can provide
an external reference voltage for gain control or matching of
multiple devices. Fabricated on an advanced BiCMOS pro-
cess, the AD9050 is packaged in space saving surface mount
packages (SOIC, SSOP) and is specified over the industrial
(–40°C to +85°C) temperature range. The 60 MSPS version
(AD9050BRS-60) is only available in the SSOP package.
+5V
AIN
(+3.3V ± 0.512V)
+5V
0.1µF
0.1µF
0.1µF
3 4 2, 8, 11,
20, 22
10
5
AD9050
6
10 BITS
9
13
1, 7, 12,
21, 23
(2)
74AC574
ENCODE
Figure 1. Typical Connections
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
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
AD9050–Typical Performance Curves
350
340
330
320 5V
310
300
290
3V
280
270
260
250
0 10 20 30 40 50 60
CLOCK RATE – MSPS
Figure 4. Power Dissipation vs. Clock Rate
80
74
HD 40
68
HD 60
62
SNR 40
56
50 SNR 60
44
38
1
10
ANALOG INPUT FREQUENCY – MHz
100
Figure 5. SNR/Distortion vs. Frequency
58
SNR
56
54
52
50
48
46
0 10 20 30 40 50
CLOCK RATE – MSPS
Figure 6. SNR vs. Clock Rate
60
60
59
ENCODE = 40 MSPS
58 AIN = 10.3 MHz
57
56
55
54
53
52
51
50
–40
– 20
0 20 40 60
TEMPERATURE – °C
80
Figure 7. SNR vs. Temperature
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
0
2.5
ENCODE = 40 MSPS
f1 IN = 9.5 MHz @ –7 dBFS
f2 IN = 9.9 MHz @ –7 dBFS
2f1–f2 = –65.4 dBc
2f2–f1 = –65.0 dBc
5 7.5 10 12.5 15 17.5 20
FREQUENCY – MHz
Figure 8. Two-Tone IMD
0.50
0.25
0.00
–0.25
–0.50
1 23 4 5 6
0.50
0.25
0.00
–0.25
–0.50
1 23 4 5 6
Figure 9. Differential Gain/Differential Phase
–6– REV. B
6 Page AD9050
OUTLINE DIMENSIONS
Dimensions shown in inches and (mm).
28-Lead SOIC
(R-28)
0.7125 (18.10)
0.6969 (17.70)
28 15
1 14
PIN 1
0.1043 (2.65)
0.0926 (2.35)
0.0291 (0.74)
0.0098 (0.25) x 45°
0.0118 (0.30)
0.0040 (0.10)
0.0500
(1.27)
BSC
0.0192 (0.49)
0.0138 (0.35)
SEATING
PLANE
8°
0.0125 (0.32) 0°
0.0091 (0.23)
0.0500 (1.27)
0.0157 (0.40)
28-Lead SSOP
(RS-28)
0.407 (10.34)
0.397 (10.08)
28 15
1 14
0.078 (1.98) PIN 1
0.068 (1.73)
0.07 (1.79)
0.066 (1.67)
0.008 (0.203)
0.0256
(0.65)
0.002 (0.050) BSC
0.015 (0.38)
0.010 (0.25)
SEATING 0.009 (0.229)
PLANE 0.005 (0.127)
8°
0°
0.03 (0.762)
0.022 (0.558)
–12–
REV. B
12 Page | ||
Seiten | Gesamt 12 Seiten | |
PDF Download | [ AD9050 Schematic.PDF ] |
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