ADC207MC Datel, Inc., ADC207MC Datasheet
ADC207MC
Manufacturer Part Number
ADC207MC
Description
Manufacturer
Datel, Inc.
Datasheet
1.ADC207MM.pdf
(6 pages)
Specifications of ADC207MC
Case
DIP
DATEL, Inc., 11 Cabot Boulevard, Mansfield, MA 02048-1151 (U.S.A.)
FEATURES
GENERAL DESCRIPTION
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
geometrics 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.
ANALOG GROUND 7
DIGITAL GROUND 2
RANGE MIDPOINT 5
ANALOG INPUT 4
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
–REFERENCE 3
+REFERENCE 6
+5V SUPPLY 18
®
IN N O VA T IO N a n d E X C E L L E N C E
CS2
CS1 8
9
+VDD
R/2
Figure 1. ADC-207 Functional Block Diagram (DIP Pinout)
R/2
R/2
R
R
R
R
1
2
®
D
D
G Q
G Q
D
D
G Q
G Q
D
D
G Q
G Q
D
D
G Q
G Q
D
D
G Q
G Q
ENCODER
128-TO-7
Tel: (508) 339-3000 Fax: (508) 339-6356
D
G
D
G
D
G
D
G
D
G
D
G
D
G
D
G
2
1
Q
Q
Q
Q
Q
Q
Q
Q
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.
GENERATOR
CLOCK
1 CLOCK INPUT
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)
Flash A/D Converters
7-Bit, 20MHz, CMOS
For immediate assistance (800) 233-2765
PINS
DIP
10
11
12
13
14
15
16
17
18
1
2
3
4
5
6
7
8
9
ANALOG GROUND
DIGITAL GROUND
INPUT/OUTPUT
CONNECTIONS
ANALOG INPUT
CLOCK INPUT
–REFERENCE
+REFERENCE
+5V SUPPLY
OVERFLOW
ADC-207
BIT 1 (MSB)
FUNCTION
BIT 7 (LSB)
MIDPOINT
BIT 2
BIT 3
BIT 4
BIT 5
BIT 6
CS1
CS2
PINS
LCC
11
12
13
14
16
17
19
20
21
23
24
1
4
5
6
7
8
9
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