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| 型號： | ADS-EVAL3 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 元件分類： | 串行ADC |
| 英文描述： | 16-Bit, 500kHz Sampling A/D Converters |
| 中文描述： | 16位，500kHz的采樣A / D轉(zhuǎn)換器 |
| 文件頁數(shù)： | 1/8頁 |
| 文件大小： | 603K |
| 代理商： | ADS-EVAL3 |
DATEL, Inc., 11 Cabot Boulevard, Mansfield, MA 02048 (U.S.A.)
Tel: (508)339-3000, (800)233-2765 Fax: (508)339-6356
Email: datellit@mcimail.com
FEATURES
16-bit resolution
500kHz sampling rate
Functionally complete
Excellent dynamic performance
83dB SNR, –89dB THD
No missing codes
Small, 40-pin, TDIP package
3.5 Watts power dissipation
On-board FIFO
16-Bit, 500kHz
Sampling A/D Converters
ADS -930
INNOV A TION and EX CELLENCE
GENERAL DESCRIPTION
The low-cost ADS-930 is a high-performance, 16-bit, 500kHz
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-930 is optimized
to achieve a THD of –89dB and an SNR of 83dB.
Packaged in a small, 40-pin, ceramic TDIP, the functionally
complete ADS-930 contains a fast-settling sample-hold
amplifier, a subranging (three-pass) A/D converter, an internal
reference, an on-board FIFO, timing and control logic, three-
state outputs and error-correction circuitry. Digital inputs/
outputs are TTL.
Requiring ±15V and +5V supplies, the ADS-930 typically
dissipates 3.5 Watts. The unit is offered with a bipolar input
range of ±5V or a unipolar input range of 0 to –10V. 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, sonar, medical/graphic
imaging, and FFT spectrum analysis.
Figure 1. ADS-930 Functional Block Diagram
PIN
FUNCTION
PIN
FUNCTION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
+10V REF. OUT
BIPOLAR
ANALOG INPUT
ANALOG GROUND
OFFSET ADJUST
GAIN ADJUST
+15V SUPPLY
COMP. BITS
ENABLE
FIFO READ
ANALOG GROUND
–15V SUPPLY
ANALOG GROUND
OVERFLOW
EOC
+5V SUPPLY
START CONVERT
DIGITAL GROUND
FSTAT1
FSTAT2
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
BIT 1 (MSB)
BIT 1 (MSB)
BIT 2
BIT 3
BIT 4
BIT 5
BIT 6
BIT 7
BIT 8
BIT 9
ANALOG GROUND
BIT 10
BIT 11
BIT 12
BIT 13
BIT 14
DIGITAL GROUND
FIFO/DIR
BIT 15
BIT 16 (LSB)
INPUT/OUTPUT CONNECTIONS
3
O
40 BIT 1 (MSB)
39 BIT 1 (MSB)
38 BIT 2
37 BIT 3
36 BIT 4
35 BIT 5
34 BIT 6
33 BIT 7
32 BIT 8
31 BIT 9
29 BIT 10
28 BIT 11
27 BIT 12
26 BIT 13
25 BIT 14
22 BIT 15
21 BIT 16 (LSB)
TIMING AND
CONTROL LOGIC
GAIN ADJUST 6
+10V REF. OUT 1
OFFSET ADJUST 5
EOC 15
+5V SUPPLY
+15V SUPPLY
–15V SUPPLY
ANALOG GROUND
DIGITAL GROUND
C
POWER AND GROUNDING
3
S/H
GAIN
ADJUST
CKT.
OFFSET
ADJUST
CKT.
PRECISION
+10V REFERENCE
ANALOG INPUT 3
START CONVERT 17
COMP. BITS 8
19 FSTAT1
20 FSTAT2
23 FIFO/DIR
10 FIFO READ
9 ENABLE
14 OVERFLOW
16
7
12
4, 11, 13, 30
18, 24
BIPOLAR 2
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