MAX196 Maxim, MAX196 Datasheet
MAX196
Manufacturer Part Number
MAX196
Description
Multirange / Single %V / 12-Bit DAS with 12-Bit Bus Interface
Manufacturer
Maxim
Datasheet
1.MAX196.pdf
(16 pages)
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The MAX196/MAX198 multirange, 12-bit data-acquisi-
tion systems (DAS) require only a single +5V supply for
operation, yet convert analog signals at their inputs up
to ±10V (MAX196) and ±4V (MAX198). These systems
provide six analog input channels that are indepen-
dently software programmable for a variety of ranges:
±10V, ±5V, 0V to +10V, and 0V to +5V for the MAX196;
±V
the MAX198. This range switching increases the effec-
tive dynamic range to 14 bits and provides the flexibility
to interface ±12V, ±15V, and 4mA to 20mA powered
sensors to a single +5V system. In addition, these con-
verters are fault protected to ±16.5V; a fault condition
on any channel will not affect the conversion result of
the selected channel. Other features include a 5MHz
bandwidth track/hold, 100ksps throughput rate, soft-
ware-selectable internal/external clock, internal/external
acquisition control, 12-bit parallel interface, and internal
4.096V or external reference.
Two programmable power-down modes (STBYPD,
FULLPD) provide low-current shutdown between con-
versions. In STBYPD mode, the reference buffer
remains active, eliminating start-up delays.
The MAX196/MAX198 employ a standard microproces-
sor (µP) interface. A three-state data I/O port is config-
ured to operate with 16-bit data buses, and data-
access and bus-release timing specifications are com-
patible with most popular µPs. All logic inputs and out-
puts are TTL/CMOS compatible.
These devices are available in 28-pin DIP, wide SO,
SSOP (55% smaller in area than wide SO), and ceramic
SB packages. For 8+4 bus interface, see the MAX197
and the MAX199 data sheets. An evaluation kit will be
available after December 1995 (MAX196EVKIT-DIP).
________________________Applications
19-0435; Rev 0; 9/95
Functional Diagram appears at end of data sheet.
Call toll free 1-800-722-8266 for free samples or literature.
_______________General Description
REF
, ±V
Industrial-Control Systems
Robotics
Data-Acquisition Systems
Automatic Testing Systems
Medical Instruments
Telecommunications
REF
/2, 0V to +V
________________________________________________________________ Maxim Integrated Products
REF
, and 0V to +V
Multirange, Single +5V, 12-Bit DAS
REF
/2 for
with 12-Bit Bus Interface
____________________________Features
Ordering Information continued at end of data sheet.
__________________Pin Configuration
______________Ordering Information
MAX196ACNI
MAX196BCNI
MAX196ACWI
MAX196BCWI
MAX196ACAI
MAX196BCAI
12-Bit Resolution, 1/2LSB Linearity
Single +5V Supply Operation
Software-Selectable Input Ranges:
±10V, ±5V, 0V to +10V, 0V to +5V (MAX196)
±V
(MAX198)
Internal 4.096V or External Reference
Fault-Protected Input Multiplexer
6 Analog Input Channels
6µs Conversion Time, 100ksps Sampling Rate
Internal or External Acquisition Control
Two Power-Down Modes
Internal or External Clock
TOP VIEW
PART
REF
, ±V
REF
CLK
D11
D10
CS
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
DIP/SO/SSOP/Ceramic SB
/2, 0V to +V
TEMP. RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
10
11
12
13
14
1
2
3
4
5
6
7
8
9
MAX196
MAX198
REF
, 0V to +V
PIN-PACKAGE
28 Narrow Plastic DIP
28 Narrow Plastic DIP
28 Wide SO
28 Wide SO
28 SSOP
28 SSOP
25
24
23
19
18
17
16
15
28
27
26
22
21
20
DGND
V
WR
RD
INT
REF
REFADJ
CH5
CH4
CH3
CH2
CH1
CH0
AGND
DD
REF
/2
1
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