1
December 1997
HI-7151
10-Bit, High Speed, A/D Converter
with Track and Hold
Features
Conversion Time . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
μ
s
Continuous Throughput Rate. . . . . . . . . . . . . . . 100kHz
No Offset or Gain Adjustments Necessary
Internal Track and Hold Amplifier
Analog and Reference Inputs Fully Buffered
μ
P Compatible Byte Organized Outputs
Low Power Consumption . . . . . . . . . . . . . . . . . .150mW
Uses a Single 2.5V Reference for
±
2.5 V Input Range
Applications
μ
P Controlled Data Acquisition Systems
DSP
- Avionics
- Sonar
Process Control
- Automotive Transducer Sensing
- Industrial
Robotics
Digital Communications
Image Processing
Description
The Intersil HI-7151 is a high speed 10-bit A/D converter
which uses a 2-Step Flash algorithm to achieve throughput
rates of 100kHz. A unique switched capacitor technique
allows a new input voltage to be sampled while a conversion
is taking place.
A Track and Hold amplifier is included on the chip, consisting
of two high speed amplifiers and an internal hold capacitor.
Microprocessor bus interfacing is simplified by the use of
standard Chip Select, Read, and Write control signals. The
digital three-state outputs are byte organized for interfacing
the either 8- or 16-bit systems. An Over-Range pin, together
with the MSB, can be used to indicate an out-of-range
condition.
The HI-7151 operates with
±
5V supplies. A single +2.5V
reference is required to provide a bipolar input range from
-2.5V to +2.5V.
Internal high speed CMOS buffers at both the analog and
reference inputs simplify external drive requirements.
Ordering Information
Pinout
HI-7151
(PDIP, CERDIP)
TOP VIEW
PART
NUMBER
LINEARITY
(MAX. DLE)
±
1 LSB
±
1
/
2
LSB
±
1 LSB
±
1
/
2
LSB
±
1 LSB
±
1
/
2
LSB
TEMP.
RANGE (
o
C)
PACKAGE
HI3-7151J-5
0 to 75
28 Ld PDIP
HI3-7151K-5
0 to 75
28 Ld PDIP
HI3-7151A-9
0 to 85
28 Ld PDIP
HI3-7151B-9
0 to 85
28 Ld PDIP
HI1-7151S-2
-55 to 125
28 Ld CERDIP
HI1-7151T-2
-55 to 125
28 Ld CERDIP
GND
V-
V
REF
AG
V
IN
SET
BUSY
CLK
HOLD
WR
CS
RD
SMODE
DG
V+
D9
D8
D7
D6
D4
D2
D1
D0
HBE
BUS
OVR
D5
D3
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
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.
Copyright Intersil Americas Inc. 2002. All Rights Reserved
File Number
3099.1
NOT RECOMMENDED FOR NEW DESIGNS