HI-5700883 Datasheet, PDF (1/8 Pages) Intersil Corporation – 8-Bit, 20 MSPS Flash A/D Converter

May 1997
®
NOT ^{RECOMMENDED FOR NEW DESIGNS}
HI-5700/883
8-Bit, 20 MSPS Flash A/D Converter
Features
Description
• This Circuit is Processed in Accordance to MIL-STD-
883 and is Fully Conformant Under the Provisions of
Paragraph 1.2.1.
• 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
The HI-5700/883 is a monolithic, 8-bit, CMOS Flash Analog-
to-Digital Converter. It is designed for high speed applica-
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.
Applications
• Video Digitizing
• Radar Systems
• Medical Imaging
• Communication Systems
• High Speed Data Acquisition Systems
Ordering Information
PART NUMBER
HI1-5700S/883
TEMPERATURE
RANGE
-55^oC to +125^oC
PACKAGE
28 Lead CerDIP
Pinout
HI-5700/883
(28 LEAD CERDIP)
TOP VIEW
CLK 1
D7 2
D6 3
D5 4
D4 5
1/4R 6
V_DD 7
GND 8
3/4R ₉
D3 10
D2 11
D1 12
D0 13
OVF ₁₄
28 ^VIN
27 VREF-
26 AV_DD
25 AGND
24 AGND
23 AV_DD
22 1/2R
21 AV_DD
20 AGND
19 AGND
18 ^AVDD
17 VREF +
16 CE1
15 CE2
Functional Block Diagram
V_IN 28
V_REF+ 17
R/2
R
R
3/4R 9
R
R
1/2R 22
R
R
1/4R 6
R
R
∅1 ∅2
R
V_REF- 27
R/2
CLK 1
∅1 ∅1
∅2
COMP
256
COMP
193
COMP
129
COMP
65
COMP
2
COMP
1
∅1
∅2
D
CL
Q
14
OVERFLOW
(OVF)
DQ
CL
2 D7 (MSB)
D
CL
Q
3 ^D6
DQ
CL
4 D5
DQ
CL
5 D4
D
CL
Q
10 D3
DQ
CL
DQ
CL
11 ^D2
12 D1
DQ
13 D0 (LSB)
CL
V_{DD 7}
GND 8
16 CE1
15 CE2
AV_DD 23 21 26 18
AGND 24 25 19 20
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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Copyright © Intersil Americas Inc. 2002. All Rights Reserved
6-8
Spec Number 512023
File Number 3286.1