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參數(shù)資料
| 型號： | ADS-944MM |
| 廠商： | Electronic Theatre Controls, Inc. |
| 元件分類： | 串行ADC |
| 英文描述： | 14-Bit, 5MHz Sampling A/D Converters |
| 中文描述： | 14位，5MHz的采樣A / D轉(zhuǎn)換器 |
| 文件頁數(shù)： | 1/8頁 |
| 文件大小： | 172K |
| 代理商： | ADS-944MM |
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+5V ANALOG SUPPLY
–5.2V DIGITAL SUPPLY
ANALOG INPUT
ANALOG GROUND
OFFSET ADJUST
ANALOG GROUND
GAIN ADJUST
COMP. BITS
OUTPUT ENABLE
+5V DIGITAL SUPPLY
ANALOG GROUND
+15V SUPPLY
–15V SUPPLY
–5.2V ANALOG SUPPLY
DIGITAL GROUND
EOC
32
31
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29
28
27
26
25
24
23
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20
19
18
17
START CONVERT
BIT 1 (MSB)
BIT 1 (MSB)
BIT 2
BIT 3
BIT 4
BIT 5
BIT 6
BIT 7
BIT 8
BIT 9
BIT 10
BIT 11
BIT 12
BIT 13
BIT 14 (LSB)
FEATURES
14-bit resolution
5MHz minimum sampling rate
No missing codes over full military temperature range
Edge-triggered, no pipeline delay
Low power, 2.95 Watts
Small, 32-pin, ceramic TDIP package
SMT package available
Excellent dynamic performance
MIL-STD-883 screening or DESC SMD available
ADS -944
14-Bit, 5MHz
Sampling A/D Converters
DATEL, Inc., 11 Cabot Boulevard, Mansfield, MA 02048-1151 (U.S.A.)
Tel: (508) 339-3000 Fax: (508) 339-6356
For immediate assistance: (800) 233-2765
GENERAL DESCRIPTION
The low-cost ADS-944 is a high-performance, 14-bit, 5MHz
sampling A/D converter. This device accurately samples full-
scale input signals up to Nyquist frequencies with no missing
codes. The dynamic performance of the ADS-944 has been
optimized to achieve a THD of –77dB and a SNR of 76dB.
Packaged in a small, 32-pin TDIP, the functionally complete
ADS-944 contains a fast-settling sample-hold amplifier, a
subranging (two-pass) A/D converter, an internal reference,
timing and control logic, three-state outputs, and error-
correction circuitry. Digital input and output levels are TTL.
Requiring ±15V, +5V and –5.2V supplies, the ADS-944
typically dissipates 2.95 Watts. The unit is offered with a
bipolar input range of ±1.25V. Models are available for use in
either commercial (0 to +70°C) or military (–55 to +125°C)
operating temperature ranges. Typical applications include
radar signal analysis, medical/graphic imaging, and
FFT spectrum analysis.
INPUT/OUTPUT CONNECTIONS
PIN
FUNCTION
PIN
FUNCTION
Figure 1. ADS-944 Functional Block Diagram
REF
DAC
3
31 BIT 1 (MSB)
30 BIT 1 (MSB)
29 BIT 2
28 BIT 3
27 BIT 4
26 BIT 5
25 BIT 6
24 BIT 7
23 BIT 8
22 BIT 9
21 BIT 10
20 BIT 11
19 BIT 12
18 BIT 13
17 BIT 14 (LSB)
TIMING AND
CONTROL LOGIC
ANALOG INPUT 3
START CONVERT 32
EOC 16
–
+
S/H
BUFFER
D
FLASH
ADC
1
FLASH
ADC
2
Σ
AMP
GAIN
CIRCUIT
GAIN ADJUST 7
OFFSET
CIRCUIT
OFFSET ADJUST 5
1
+5V
ANALOG
SUPPLY
2
–5.2V
DIGITAL
SUPPLY
4, 6, 11
ANALOG
GROUND
10
+5V
DIGITAL
SUPPLY
12
+15V
SUPPLY
14
–5.2V
ANALOG
SUPPLY
15
DIGITAL
GROUND
8
COMP.
BITS
9 OUTPUT ENABLE
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相關(guān)代理商/技術(shù)參數(shù) |
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| ADS-945 | 制造商:Murata Power Solutions 功能描述:ADC Dual 2-Step Flash 10Msps 14-bit Parallel 76-Pin |
| ADS-945EX | 制造商:Murata Power Solutions 功能描述:ADC Dual 2-Step Flash 10Msps 14-bit Parallel 76-Pin |
| ADS-946 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:ADS-946 14-Bit, 8MHz Sampling A/D Converters |
| ADS-946/883 | 制造商:MURATA-PS 制造商全稱:Murata Power Solutions Inc. 功能描述:14-Bit, 8MHz Sampling A/D Converters |
| ADS-946G/883 | 制造商:Murata Power Solutions 功能描述:ADC Single 2-Step Flash 8Msps 14-bit Parallel 24-Pin SMT |
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