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AD9042AST 参数 Datasheet PDF下载

AD9042AST图片预览
型号: AD9042AST
PDF下载: 下载PDF文件 查看货源
内容描述: 12位, 41 MSPS单芯片A / D转换器 [12-Bit, 41 MSPS Monolithic A/D Converter]
分类和应用: 转换器
文件页数/大小: 24 页 / 489 K
品牌: AD [ ANALOG DEVICES ]
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a
FEATURES
41 MSPS Minimum Sample Rate
80 dB Spurious-Free Dynamic Range
595 mW Power Dissipation
Single +5 V Supply
On-Chip T/H and Reference
Twos Complement Output Format
CMOS-Compatible Output Levels
APPLICATIONS
Cellular/PCS Base Stations
GPS Anti-Jamming Receivers
Communications Receivers
Spectrum Analyzers
Electro-Optics
Medical Imaging
ATE
PRODUCT DESCRIPTION
AIN
V
OFFSET
V
REF
ENCODE
ENCODE
12-Bit, 41 MSPS
Monolithic A/D Converter
AD9042
FUNCTIONAL BLOCK DIAGRAM
AV
CC
DV
CC
A1
TH1
TH2
TH3
A2
ADC
ADC
DAC
+2.4V
REFERENCE
INTERNAL
TIMING
AD9042
7
6
DIGITAL ERROR CORRECTION LOGIC
MSB
LSB
GND
D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
The AD9042 is a high speed, high performance, low power,
monolithic 12-bit analog-to-digital converter. All necessary
functions, including track-and-hold (T/H) and reference are
included on chip to provide a complete conversion solution.
The AD9042 runs off of a single +5 V supply and provides
CMOS-compatible digital outputs at 41 MSPS.
Designed specifically to address the needs of wideband,
multichannel receivers, the AD9042 maintains 80 dB
spurious-free dynamic range (SFDR) over a bandwidth of
20 MHz. Noise performance is also exceptional; typical
signal-to-noise ratio is 68 dB.
The AD9042 is built on Analog Devices’ high speed complemen-
tary bipolar process (XFCB) and uses an innovative multipass
architecture. Units are packaged in a 28-pin DIP; this custom
AD9042AD PIN DESIGNATIONS
GND 1
DV
CC
2
GND 3
ENCODE 4
ENCODE 5
GND 6
28 D11 (MSB)
27 D10
26 D9
25 D8
cofired ceramic package forms a multilayer substrate to which
internal bypass capacitors and the 9042 die are attached and a
44-pin TQFP low profile surface mount package. The AD9042
industrial grade is specified from –40°C to +85°C. However,
the AD9042 was designed to perform over the full military
temperature range (–55°C to +125°C); consult factory for
military grade product options.
PRODUCT HIGHLIGHTS
1. Guaranteed sample rate is 41 MSPS.
2. Dynamic performance specified over entire Nyquist band;
spurious signals typ. 80 dBc for –1 dBFS input signals.
3. Low power dissipation: 595 mW off a single +5 V supply.
4. Reference and track-and-hold included on chip.
5. Packaged in 28-pin ceramic DIP and 44-pin TQFP.
AD9042AST PIN DESIGNATIONS
D11 (MSB)
DV
CC
DV
CC
DV
CC
DV
CC
GND
GND
44 43 42 41 40 39 38 37 36 35 34
DV
CC
1
DV
CC
2
ENCODE 3
ENCODE 4
GND 5
GND 6
AIN 7
V
OFFSET
8
V
REF
9
C1 10
AV
CC
11
12 13 14 15
AV
CC
AV
CC
GND
GND
PIN 1
D9
GND
D10
GND
33 D8
32 D7
31 D6
30 D5
AD9042
24 D7
AD9042
TOP VIEW
(Not to Scale)
29 D4
28 D3
27 D2
26 D1
25 D0 (LSB)
24 GND
23 NC
TOP VIEW 23 D6
GND 7 (Not to Scale) 22 D5
AIN 8
V
OFFSET
9
V
REF
10
GND 11
AV
CC
12
GND 13
AV
CC
14
21 D4
20 D3
19 D2
18 D1
17 D0 (LSB)
AV
CC
AV
CC
AV
CC
15 NC
NC = NO CONNECT
NC = NO CONNECT
REV. A
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.
© Analog Devices, Inc., 1996
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
Fax: 617/326-8703
GND
GND
GND
GND
16 NC
16 17 18 19 20 21 22