HI-7153 Datasheet, PDF (1/17 Pages) Intersil Corporation – 8-Channel, 10-Bit High Speed Sampling A/D Converter

December 1997
Features
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HI-7153
8-Channel, 10-Bit High Speed
Sampling A/D Converter
Description
• 5µs Conversion Time
• 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
• 2’s Complement Data Output
• 150mW Power Consumption
• Only a Single 2.5V Reference Required for a ±2.5V
Input Range
• Out-of-Range Flag
• /883 Version Available
Applications
• µP Controlled Data Acquisition Systems
• DSP
- Avionics
- Sonar
• Process Control
- Automotive Transducer Sensing
- Industrial
• Robotics
• Digital Communications
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.
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.
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.
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.
Ordering Information
PART
LINEARITY TEMPERA-
NUMBER (MAX ILE) TURE RANGE
PACKAGE
HI3-7153J-5 ±1.0 LSB 0^oC to +70^oC 40 Lead Plastic DIP
HI3-7153A-9 ±1.0 LSB -40^oC to +85^oC 40 Lead Plastic DIP
Functional Diagram
V_REF
(ANALOG GND) _AG
A_IN0
A_IN1
A_IN2
A_IN3
A_IN4
A_IN5
A_IN6
MUX
A_IN7
A0
A1
A2
ALE
TEST
(DIGITAL GND)
+
REF
AMP
REF
-
INVERT
INPUT
BUFFER
AMP
HI1-7153S-2 ±1.0 LSB -55^oC to +125^oC 40 Lead Ceramic DIP
33
TWO
STEP
FLASH
LATCHES
AND
OUTPUT
BUFFERS
DO
DATA OUTPUTS
D9
OVR
BUS
1
BUS
CTRL
HBE
TRACK
HOLD
AMP
V+
V-
GND
DG
POWER
SUPPLY
DISTRIBUTION
CONTROL
LOGIC
HOLD
RD
WR
CS
SMODE
CLK
EOC
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
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File Number 2787.4