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參數(shù)資料
| 型號： | ADS-919MM |
| 廠商： | Electronic Theatre Controls, Inc. |
| 元件分類： | 串行ADC |
| 英文描述： | 14-Bit, 2MHz, Low-Power Sampling A/D Converters |
| 中文描述： | 14位，2MHz的，低功耗采樣A / D轉(zhuǎn)換器 |
| 文件頁數(shù)： | 1/8頁 |
| 文件大小： | 190K |
| 代理商： | ADS-919MM |
ADS -929
14-Bit, 2MHz, Low-Power
Sampling A/D Converters
FEATURES
14-bit resolution
2MHz sampling rate
No missing codes
Functionally complete
Small 24-pin DDIP or SMT package
Low power, 1.7 Watts
Operates from ±15V or ±12V supplies
Edge-triggered; No pipeline delays
Bipolar ±5V input range
GENERAL DESCRIPTION
The ADS-929 is a high-performance, 14-bit, 2MHz sampling
A/D converter. This device samples input signals up to Nyquist
frequencies with no missing codes. The ADS-929 features
outstanding dynamic performance including a THD of –79dB.
Housed in a small 24-pin DDIP or SMT (gull-wing) package,
the functionally complete ADS-929 contains a fast-settling
sample-hold amplifier, a subranging (two-pass) A/D converter,
a precise voltage reference, timing/control logic, and error-
correction circuitry. Digital input and output levels are TTL.
Requiring ±15V (or ±12V) and +5V supplies, the ADS-929
typically dissipates 1.7W (1.4W for ±12V). The unit is offered
with a bipolar input (–5V to +5V). Models are available for use
in either commercial (0 to +70°C) or military (–55 to +125°C)
operating temperature ranges. Applications include radar,
sonar, spectrum analysis, and graphic/medical imaging.
INPUT/OUTPUT CONNECTIONS
PIN
FUNCTION
PIN
FUNCTION
1
2
3
4
5
6
7
8
9
10
11
12
BIT 14 (LSB)
BIT 13
BIT 12
BIT 11
BIT 10
BIT 9
BIT 8
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
24
23
22
21
20
19
18
17
16
15
14
13
–12V/–15V SUPPLY
ANALOG GROUND
+12V/+15V SUPPLY
+10V REFERENCE OUT
ANALOG INPUT
ANALOG GROUND
BIT 1 (MSB)
BIT 2
START CONVERT
EOC
DIGITAL GROUND
+5V SUPPLY
Figure 1. ADS-929 Functional Block Diagram
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
REF
R
R
18 BIT 1 (MSB)
17 BIT 2
12 BIT 3
11 BIT 4
10 BIT 5
9 BIT 6
8 BIT 7
7 BIT 8
6 BIT 9
5 BIT 10
4 BIT 11
3 BIT 12
2 BIT 13
1 BIT 14 (LSB)
TIMING AND
CONTROL LOGIC
+10V REF. OUT 21
START CONVERT 16
EOC 15
D
DAC
FLASH
ADC
BUFFER
–
+
S/H
ANALOG INPUT 20
13
+5V SUPPLY
22
+12V/+15V SUPPLY
19, 23
ANALOG GROUND
14
DIGITAL GROUND
24
–12V/–15V SUPPLY
S
2
S
1
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