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ADC-207MM-QL Arkusz danych(PDF) 1 Page - Murata Power Solutions Inc.

Numer części ADC-207MM-QL
Szczegółowy opis  7-Bit, 20MHz, CMOS Flash A/D Converters
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Producent  MURATA-PS [Murata Power Solutions Inc.]
Strona internetowa  http://www.murata-ps.com
Logo MURATA-PS - Murata Power Solutions Inc.

ADC-207MM-QL Arkusz danych(HTML) 1 Page - Murata Power Solutions Inc.

  ADC-207MM-QL Datasheet HTML 1Page - Murata Power Solutions Inc. ADC-207MM-QL Datasheet HTML 2Page - Murata Power Solutions Inc. ADC-207MM-QL Datasheet HTML 3Page - Murata Power Solutions Inc. ADC-207MM-QL Datasheet HTML 4Page - Murata Power Solutions Inc. ADC-207MM-QL Datasheet HTML 5Page - Murata Power Solutions Inc. ADC-207MM-QL Datasheet HTML 6Page - Murata Power Solutions Inc.  
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Q
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ANALOG INPUT 4
+REFERENCE 6
DIGITAL GROUND 2
ANALOG GROUND 7
RANGE MIDPOINT 5
R/2
R
R
R
R
R/2
R/2
–REFERENCE 3
CS1 8
9
+5V SUPPLY 18
+VDD
1 CLOCK INPUT
CLOCK
GENERATOR
10 OVERFLOW
11 BIT 1 (MSB)
12 BIT 2
13 BIT 3
14 BIT 4
15 BIT 5
16 BIT 6
17 BIT 7 (LSB)
128-TO-7
ENCODER
CS2
D
GQ
D
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D
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D
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Æ1
Æ2
Æ2
Æ1
Figure 1. ADC-207 Functional Block Diagram (DIP Pinout)
PRODUCT OVERVIEW
FEATURES
7-bit flash A/D converter
20MHz sampling rate
Low power (250mW)
Single +5V supply
1.2 micron CMOS technology
7-bit latched 3-state output with overflow bit
Surface-mount versions
High-reliability version
No missing codes
The ADC-207 is the industry’s first 7-bit flash
converter using an advanced high-speed VLSI 1.2
micron CMOS process. This process offers some
very distinctive advantages over other processes,
making the ADC-207 unique. The smaller geo-
metrics of the process achieve high speed, better
linearity and superior temperature performance.
Since the ADC-207 is a CMOS device, it also
has very low power consumption (250mW). The
device draws power from
a single +5V supply and is conservatively rated
for 20MHz operation. The ADC-207 allows using
sampling apertures as small as 12ns, making it
more closely approach an ideal sampler. The small
sampling apertures also let the device operate at
greater than 20MHz.
The ADC-207 has 128 comparators which are
auto-balanced on every conversion to cancel out
any offsets due to temperature and/or dynamic
effects. The resistor ladder has a midpoint tap for
use with an external voltage source to improve
integral linearity beyond 7 bits. The ADC-207 also
provides the user with 3-state outputs for easy
interfacing to other components.
There are six models of the ADC-207 covering
two operating temperature ranges, 0 to +70°C and
–55 to +125°C. Two high-reliability "QL" models
are also available.
INPUT/OUTPUT CONNECTIONS
DIP Pins
FUNCTION
LCC Pins
1
CLOCK INPUT
1
2
DIGITAL GROUND
4
3
–REFERENCE
5
4
ANALOG INPUT
6
5
MIDPOINT
7
6
+REFERENCE
8
7
ANALOG GROUND
9
8
CS1
11
9
CS2
12
10
OVERFLOW
13
11
BIT 1 (MSB)
14
12
BIT 2
16
13
BIT 3
17
14
BIT 4
19
15
BIT 5
20
16
BIT 6
21
17
BIT 7 (LSB)
23
18
+5V SUPPLY
24
ADC-207
7-Bit, 20MHz, CMOS Flash A/D Converters
MDA_ADC-207.B01 Page 1 of 6
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com
www.murata-ps.com
Technical enquiries email: data.acquisition@murata-ps.com, tel: +1 508 339 3000


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