®
HI-5700/883
8-Bit, 20 MSPS Flash A/D Converter
May 1997
Features
Description
• This Circuit is Processed in Accordance to MIL-STD- The HI-5700/883 is a monolithic, 8-bit, CMOS Flash Analog-
883 and is Fully Conformant Under the Provisions of to-Digital Converter. It is designed for high speed applica-
Paragraph 1.2.1.
tions where wide bandwidth and low power consumption are
essential. Its 20 MSPS speed is made possible by a parallel
architecture which also eliminates the need for an external
sample and hold circuit. The HI-5700/883 delivers ±0.5 LSB
differential nonlinearity while consuming only 725mW (typi-
cal) at 20 MSPS. Microprocessor compatible data output
latches are provided which present valid data to the output
bus 1.5 clock cycles after the convert command is received.
An overflow bit is provided to allow the series connection of
two converters to achieve 9-bit resolution.
• 20 MSPS with No Missing Codes
• 18MHz Full Power Input Bandwidth
• No Missing Codes Over Temperature
• Sample and Hold Not Required
• Single +5V Supply Voltage
• CMOS/TTL
• Overflow Bit
Applications
Ordering Information
• Video Digitizing
TEMPERATURE
• Radar Systems
PART NUMBER
RANGE
PACKAGE
• Medical Imaging
HI1-5700S/883
-55oC to +125oC
28 Lead CerDIP
• Communication Systems
• High Speed Data Acquisition Systems
Functional Block Diagram
Pinout
∅2
∅1
∅1
∅1
∅2
HI-5700/883
(28 LEAD CERDIP)
TOP VIEW
VIN
28
OVERFLOW
(OVF)
D
CL
R/2
Q
14
VREF+ 17
V
V
1
2
R
CLK
D7
28
IN
COMP
D
CL
256
Q
2
3
D7 (MSB)
D6
-
27
26
25
24
REF
R
D6
AV
DD
3
9
22
6
3/4R
1/2R
1/4R
D
CL
Q
R
R
R
R
R
R
AGND
AGND
4
D5
COMP
193
5
D4
1/4R
VDD
D
CL
Q
D5
D4
D3
4
5
6
23 AVDD
COMP
129
1/2R
AV
7
22
21
20
19
18
17
16
15
D
CL
Q
8
GND
3/4R
DD
AGND
D
CL
9
10
Q
COMP
65
D3
D2
10
11
12
13
14
AGND
D
CL
AV
DD
D2
D1
Q
11
12
V
+
D1
REF
D
CL
COMP
2
Q
D0
CE1
CE2
R
OVF
D
CL
VREF
-
27
1
13
D0 (LSB)
Q
R/2
COMP
1
CE1
CE2
16
15
∅1
∅2
V
DD
AV
7
8
23 21 26 18
24 25 19 20
DD
CLK
AGND
GND
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Spec Number 512023
File Number 3286.1
Copyright © Intersil Americas Inc. 2002. All Rights Reserved
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