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| 型號(hào)： | ADS-945 |
| 廠商： | MURATA POWER SOLUTIONS INC |
| 元件分類： | ADC |
| 中文描述： | 1-CH 14-BIT FLASH METHOD ADC, PARALLEL ACCESS, MDIP75 |
| 封裝： | ROHS COMPLIANT, PACKAGE-75 |
| 文件頁(yè)數(shù)： | 1/8頁(yè) |
| 文件大?。?/td> | 285K |
| 代理商： | ADS-945 |
Figure 1. ADS-945 Functional Block Diagram
REF
DAC
3
53
52
51
50
49
48
47
46
45
44
43
42
41
40
TIMING AND
CONTROL LOGIC
ANALOG INPUT 4
START CONVERT 32
T/H STATUS 29
+1
BUFFER
D
FLASH
ADC
1
FLASH
ADC
2
3
AMP
GAIN
CIRCUIT
GAIN ADJUST 9
OFFSET
CIRCUIT
OFFSET ADJUST 18
14
+15V
SUPPLY
12
–15V
SUPPLY
55
+5V DIGITAL
SUPPLY
34 OUTPUT ENABLE
T/H
+10 REF. OUT 7
T/H STATUS 30
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)
33 OVERFLOW
1,2,3,5,6,8,13,15,17,
19-25,62,64-68,70-76
ANALOG GROUND
27,28,31,35,37-39,54,58-60
DIGITAL
GROUND
36, 61
NO
CONNECT
57
–5.2V DIGITAL
SUPPLY
26 MISSING PIN
10,11,56 DO NOT CONNECT
CASE
DGND
AGND
BLOCK DIAGRAM
The low-cost ADS-945 is a high-performance,
14-bit, 10MHz 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-945
has been optimized to achieve a THD of –80dB
and a SNR of 75dB.
Packaged in a 2" x 4" module, the function-
ally complete ADS-945 contains a fast-settling
sample/hold amplifier, a subranging (two-pass)
A/D converter, a precise voltage reference, timing/
control logic, three-state outputs, and error-
correction circuitry. Digital inputs and outputs are
TTL compatible (except for pins 29 and 30 which
are ECL).
Requiring ±15V, +5V and –5.2V supplies,
the ADS-945 typically dissipates 4.0W. 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) operat-
ing temperature ranges. Typical applications
include radar signal analysis, medical/graphic
imaging, and FFT spectrum analysis.
PRODUCT OVERVIEW
FEATURES
■
14-bit resolution
■
10MHz minimum throughput
■
Functionally complete
■
No missing codes
■
Low power, 4.0W
■
Excellent dynamic performance
■
Internally clamped input
■
Edge triggered
■
TTL compatible
■
2" x 4" module
■
Very low profile
INPUT/OUTPUT CONNECTIONS
FUNCTION
ANALOG GROUND
ANALOG INPUT
ANALOG GROUND
+10V REFERENCE OUT
ANALOG GROUND
GAIN ADJUST
DO NOT CONNECT
–15V SUPPLY
ANALOG GROUND
+15V SUPPLY
ANALOG GROUND
OFFSET ADJUST
ANALOG GROUND
MISSING PIN
DIGITAL GROUND
DIGITAL GROUND
T/H STATUS
T/H STATUS
DIGITAL GROUND
START CONVERT
OVERFLOW
OUTPUT ENABLE (OE)
DIGITAL GROUND
NO CONNECT
DIGITAL GROUND
DIGITAL GROUND
PIN
PIN
70-76
69
64-68
63
62
61
58-60
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
FUNCTION
ANALOG GROUND
+5V ANALOG SUPPLY
ANALOG GROUND
–5.2V ANALOG SUPPLY
ANALOG GROUND
NO CONNECT
DIGITAL GROUND
–5.2V DIGITAL SUPPLY
DO NOT CONNECT
+5V DIGITAL SUPPLY
DIGITAL GROUND
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)
DIGITAL GROUND
1
4
5-6
7
8
9
10-11
12
13
14
15-17
18
19-25
26
27
28
29
30
31
32
33
34
35
36
37
38
ADS-945
14-Bit, 10MHz Sampling A/D Converters
DATEL
11 Cabot Boulevard, Mansfield, MA 02048-1151 USA Tel: (508) 339-3000 www.datel.com e-mail: help@datel.com
01 Apr 2011 MDA_ADS-945.B02
Page 1 of 8
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| ADS-946GC | 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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