®
HI-7153
8-Channel, 10-Bit High Speed
Sampling A/D Converter
December 1997
Features
Description
• 5µs Conversion Time
The HI-7153 is an 8 channel high speed 10 bit A/D converter
which uses a Two Step Flash algorithm to achieve through-put
rates of 200kHz. The converter features an 8 channel CMOS
analog multiplexer with random channel addressing. A unique
switched capacitor technique allows a new input voltage to be
sampled while a conversion is taking place.
• 8 Channel Input Multiplexer
• 200,000 Channels/Second Throughput Rate
• Over 9 Effective Bits at 20kHz
• No Offset or Gain Adjustments Necessary
• Analog and Reference Inputs Fully Buffered
• On-Chip Track and Hold Amplifier
• µP Compatible Interface
Internal high speed CMOS buffers at both the analog and refer-
ence inputs simplifies interface requirements.
A Track and Hold amplifier is included on the chip, consisting of
two high speed amplifiers and an internal hold capacitor,
reducing external circuitry.
• 2’s Complement Data Output
• 150mW Power Consumption
Microprocessor bus interfacing is simplified by the use of stan-
dard Chip Select, Read, and Write control signals. The digital
three-state outputs are byte organized for bus interface to 8 or
16 bit systems. An Out-of-Range pin, together with the MSB bit,
can be used to indicate an under or over-range condition.
• Only a Single 2.5V Reference Required for a ±2.5V
Input Range
• Out-of-Range Flag
• /883 Version Available
The HI-7153 operates with ±5V supplies. Only a single +2.5V refer-
ence is required to provide a bipolar input range from -2.5V to
+2.5V.
Applications
• µP Controlled Data Acquisition Systems
• DSP
- Avionics
- Sonar
Ordering Information
• Process Control
- Automotive Transducer Sensing
- Industrial
PART
NUMBER
LINEARITY
(MAX ILE)
TEMPERA-
TURE RANGE
PACKAGE
HI3-7153J-5
HI3-7153A-9
±1.0 LSB
±1.0 LSB
0oC to +70oC
40 Lead Plastic DIP
• Robotics
-40oC to +85oC 40 Lead Plastic DIP
• Digital Communications
HI1-7153S-2
±1.0 LSB -55oC to +125oC 40 Lead Ceramic DIP
Functional Diagram
DO
+
33
REF
TWO
STEP
FLASH
LATCHES
AMP
VREF
DATA OUTPUTS
AND
REF
INVERT
-
OUTPUT
BUFFERS
D9
OVR
(ANALOG GND)
AG
BUS
AIN0
AIN1
AIN2
AIN3
AIN4
AIN5
AIN6
AIN7
1
BUS
CTRL
INPUT
BUFFER
AMP
HBE
HOLD
MUX
TRACK
HOLD
AMP
RD
WR
CONTROL
LOGIC
A0
A1
CS
V+
V-
A2
SMODE
CLK
POWER
SUPPLY
DISTRIBUTION
ALE
TEST
GND
DG
EOC
(DIGITAL 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.
File Number 2787.4
Copyright © Intersil Americas Inc. 2002. All Rights Reserved
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