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參數(shù)資料
| 型號(hào)： | AD9022AZ |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | ADC |
| 英文描述： | 12-Bit 20 MSPS Monolithic A/D Converter |
| 中文描述： | 1-CH 12-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, CDSO28 |
| 封裝： | CERAMIC, LCC-28 |
| 文件頁(yè)數(shù)： | 1/12頁(yè) |
| 文件大?。?/td> | 240K |
| 代理商： | AD9022AZ |
AD9022
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.
a
12-Bit 20 MSPS
Monolithic A/DConverter
PRODUCT DE SCRIPT ION
T he AD9022 is a high speed, high performance, monolithic
12-bit analog-to-digital converter. All necessary functions, in-
cluding track-and-hold (T /H) and reference, are included
on-chip to provide a complete conversion solution. It is a
companion unit to the AD9023; the primary difference between
the two is that all logic for the AD9022 is T T L-compatible,
while the AD9023 utilizes ECL logic for digital inputs and out-
puts. Pinouts for the two parts are nearly identical.
Operating from +5 V and –5.2 V supplies, the AD9022 pro-
vides excellent dynamic performance. Sampling at 20 MSPS
with A
IN
= 1 MHz, the spurious-free dynamic range (SFDR) is
typically 76 dB; with A
IN
= 9.6 MHz, SFDR is 74 dB. SNR is
typically 65 dB.
T he onboard T /H has a 110 MHz bandwidth and, more impor-
tantly, is designed to provide excellent dynamic performance for
analog input frequencies above Nyquist. T his feature is neces-
sary in many undersampling signal processing applications, such
as in direct IF-to-digital conversion.
T o maintain dynamic performance at higher IFs, monolithic
RF track-and-holds (such as the AD9100 and AD9101
Samplifier ) can be used with the AD9022 to process signals
up to and beyond 70 MHz.
With DNL typically less than 0.5 LSB and 20 ns transient re-
sponse settling time, the AD9022 provides excellent results
when low-frequency analog inputs must be oversampled (such
as CCD
digitization). T he full scale analog input is
±
1 V with a
300
input impedance. T he analog input can be driven directly
from the signal source, or can be buffered by the AD96xx series
of low noise, low distortion buffer amplifiers.
All timing is internal to the AD9022; the clock signal initiates
the conversion cycle. For best results, the encode command
should contain as little jitter as possible. High speed layout
practices must be followed to ensure optimum A/D perfor-
mance.
T he AD9022 is built on a trench isolated bipolar process and
utilizes an innovative multipass architecture (see the block
diagram). T he unit is packaged in 28-lead ceramic DIPs and
gullwing surface mount packages. T he AD9022 is specified to
operate over the industrial (–25
°
C to +85
°
C) and military
(–55
°
C to +125
°
C) temperature ranges.
FUNCT IONAL BLOCK DIAGRAM
4-BIT
ADC
5-BIT
ADC
DIGITAL
ERROR
CORRECTION
12
TTL
+2V
REF
GND
+5V
–5.2V
ENCODE
ANALOG
INPUT
AD9022
T/H
5-BIT
ADC
DAC
DAC
T/H
16
8
FEATURES
Monolithic
12-Bit 20 MSPS A/D Converter
Low Power Dissipation: 1.4 Watts
On-Chip T/H and Reference
High Spurious-Free Dynamic Range
TTL Logic
APPLICATIONS
Radar Receivers
Digital Communications
Digital Instrumentation
Electro-Optics
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
Analog Devices, Inc., 1998
Samplifier is a trademark of Analog Devices, Inc.
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| AD9022BQ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog-to-Digital Converter， 12-Bit |
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| AD9023/PCB | 制造商:Analog Devices 功能描述: |
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