MAX199BCWI+ Maxim Integrated Products, MAX199BCWI+ Datasheet

IC DAS 12BIT 8CH 28-SOIC

MAX199BCWI+

Manufacturer Part Number
MAX199BCWI+
Description
IC DAS 12BIT 8CH 28-SOIC
Manufacturer
Maxim Integrated Products
Type
Data Acquisition System (DAS)r
Datasheet

Specifications of MAX199BCWI+

Resolution (bits)
12 b
Sampling Rate (per Second)
100k
Data Interface
Parallel
Voltage Supply Source
Single Supply
Voltage - Supply
4.75 V ~ 5.25 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
28-SOIC (7.5mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX199 multi-range, 12-bit data-acquisition system
(DAS) requires only a single +5V supply for operation,
and converts analog signals up to ±4V at its inputs. This
system provides eight analog input channels that are
independently software programmable for a variety of
ranges: ±V
This increases effective dynamic range to 14 bits, and
provides the user flexibility to interface 4mA-to-20mA,
±12V, and ±15V powered sensors to a single +5V sys-
tem. In addition, the converter is fault-protected to
±16.5V; a fault condition on any channel will not affect
the conversion result of the selected channel. Other fea-
tures include a 5MHz bandwidth track/hold, 100ksps
throughput rate, internal/external clock, internal/external
acquisition control, 8+4 parallel interface, and operation
with an internal 4.096V or external reference.
A hardware SHDN pin and two programmable power-
down modes (STBYPD, FULLPD) provide low-current
shutdown between conversions. In STBYPD mode, the
reference buffer remains active, eliminating start-up
delays.
The MAX199 employs a standard microprocessor (µP)
interface. Its three-state data I/O interface is configured
to operate with 8-bit data buses, and data-access and
bus-release timing specifications are compatible with
most popular µPs. All logic inputs and outputs are
TTL/CMOS compatible.
The MAX199 is available in 28-pin DIP, wide SO, SSOP,
and ceramic SB packages.
For a different combination of input ranges (±10V, ±5V,
0V to 10V, 0V to 5V), see the MAX197 data sheet. For 12-
bit bus interfaces, see the MAX196/MAX198 data sheet.
________________________Applications
19-0401; Rev 0; 6/95
Functional Diagram appears at end of data sheet.
Call toll free 1-800-722-8266 for free samples or literature.
_______________General Description
+5V Supply, 12-Bit DAS with 8+4 Bus Interface
Industrial-Control Systems
Robotics
Data-Acquisition Systems
Automatic Testing Systems
Medical Instruments
Telecommunications
REF
, ±V
________________________________________________________________ Maxim Integrated Products
REF/2
, 0V to V
REF
Multi-Range (±4V, ±2V, +4V, +2V),
, or 0V to V
REF/2
.
____________________________Features
Ordering Information continued at end of data sheet.
*Dice are specified at T
__________________Pin Configuration
______________Ordering Information
MAX199ACNI
MAX199BCNI
MAX199ACWI
MAX199BCWI
MAX199ACAI
MAX199BCAI
MAX199BC/D
12-Bit Resolution, 1/2LSB Linearity
Single +5V Operation
Software-Selectable Input Ranges:
±V
Internal 4.096V or External Reference
Fault-Protected Input Multiplexer (±16.5V)
8 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
D2/D10
D3/D11
D1/D9
D0/D8
REF/2
SHDN
HBEN
CLK
WR
RD
CS
D7
D6
D5
D4
DIP/SO/SSOP/Ceramic SB
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
0°C to +70°C
, 0V to V
10
11
12
13
14
1
2
3
4
5
6
7
8
9
A
= +25°C, DC parameters only.
MAX199
REF
, 0V to V
PIN-PACKAGE
28 Narrow Plastic DIP
28 Narrow Plastic DIP
28 Wide SO
28 Wide SO
28 SSOP
28 SSOP
Dice*
28
26
25
24
23
22
19
18
17
16
15
27
21
20
CH2
CH0
DGND
V
REF
REFADJ
INT
CH7
CH6
CH5
CH4
CH3
CH1
AGND
DD
REF/2
1

Related parts for MAX199BCWI+

MAX199BCWI+ Summary of contents

Page 1

... Industrial-Control Systems Robotics Data-Acquisition Systems Automatic Testing Systems Medical Instruments Telecommunications Functional Diagram appears at end of data sheet. ________________________________________________________________ Maxim Integrated Products Call toll free 1-800-722-8266 for free samples or literature. ____________________________Features 12-Bit Resolution, 1/2LSB Linearity Single +5V Operation Software-Selectable Input Ranges: ±V , ±V ...

Page 2

Multi-Range (±4V, ±2V, +4V, +2V), +5V Supply, 12-Bit DAS with 8+4 Bus Interface ABSOLUTE MAXIMUM RATINGS V to AGND............................................................-0.3V to +7V DD AGND to DGND.....................................................-0.3V to +0.3V REF to AGND..............................................-0. REFADJ to AGND.......................................-0. Digital Inputs to ...

Page 3

Multi-Range (±4V, ±2V, +4V, +2V), +5V Supply, 12-Bit DAS with 8+4 Bus Interface ELECTRICAL CHARACTERISTICS (continued ±5%; unipolar/bipolar range; external reference mode with 50% duty cycle unless otherwise noted.) ...

Page 4

Multi-Range (±4V, ±2V, +4V, +2V), +5V Supply, 12-Bit DAS with 8+4 Bus Interface ELECTRICAL CHARACTERISTICS (continued ±5%; unipolar/bipolar range; external reference mode with 50% duty cycle unless otherwise noted.) ...

Page 5

Multi-Range (±4V, ±2V, +4V, +2V), +5V Supply, 12-Bit DAS with 8+4 Bus Interface TIMING CHARACTERISTICS ( ±5%; unipolar/bipolar range; external reference mode with 50% duty cycle unless otherwise noted.) A ...

Page 6

Multi-Range (±4V, ±2V, +4V, +2V), +5V Supply, 12-Bit DAS with 8+4 Bus Interface __________________________________________Typical Operating Characteristics (T = +25°C, unless otherwise noted.) A INTEGRAL NONLINEARITY vs. DIGITAL CODE 0.250 0.200 0.150 0.100 0.050 0 -0.050 -0.100 -0.150 0 1000 2000 ...

Page 7

Multi-Range (±4V, ±2V, +4V, +2V), +5V Supply, 12-Bit DAS with 8+4 Bus Interface ______________________________________________________________Pin Description PIN NAME Clock Input. In external clock mode, drive CLK with a TTL/CMOS compatible clock. In internal clock mode, 1 CLK place a capacitor (C ...

Page 8

Multi-Range (±4V, ±2V, +4V, +2V), +5V Supply, 12-Bit DAS with 8+4 Bus Interface _______________Detailed Description Converter Operation The MAX199, a multi-range, fault-tolerant ADC, uses successive approximation and internal input track/hold (T/H) circuitry to convert an analog signal to a 12-bit ...

Page 9

Multi-Range (±4V, ±2V, +4V, +2V), +5V Supply, 12-Bit DAS with 8+4 Bus Interface The input channels are overvoltage protected to ±16.5V. This protection is active even if the device is in power-down mode. Even with V = 0V, the input ...

Page 10

Multi-Range (±4V, ±2V, +4V, +2V), +5V Supply, 12-Bit DAS with 8+4 Bus Interface Table 5. Data-Bus Output PIN HBEN = LOW HBEN = HIGH D0 B0 (LSB B10 D3 B3 B11 (MSB ...

Page 11

Multi-Range (±4V, ±2V, +4V, +2V), +5V Supply, 12-Bit DAS with 8+4 Bus Interface CSWS CONTROL D7–D0 BYTE ACQMOD = "1" INT RD HBEN HIGH-Z DOUT Figure 6. Conversion Timing Using External ...

Page 12

Multi-Range (±4V, ±2V, +4V, +2V), +5V Supply, 12-Bit DAS with 8+4 Bus Interface External Clock Mode Select external clock mode by writing the control byte with and Figure 8 shows CLK and WR timing ...

Page 13

Multi-Range (±4V, ±2V, +4V, +2V), +5V Supply, 12-Bit DAS with 8+4 Bus Interface __________Applications Information Power-On Reset At power-up, the internal power-supply circuitry sets INT high and puts the device in normal operation / external clock mode. This state is ...

Page 14

Multi-Range (±4V, ±2V, +4V, +2V), +5V Supply, 12-Bit DAS with 8+4 Bus Interface Power-Down Mode To save power, you can put the converter into low- current shutdown mode between conversions. Two programmable power-down modes are available, in addition to a ...

Page 15

Multi-Range (±4V, ±2V, +4V, +2V), +5V Supply, 12-Bit DAS with 8+4 Bus Interface Transfer Function Output data coding for the MAX199 is binary in unipolar mode with 1LSB = (FS / 4096) and twos-complement binary in bipolar mode with 1LSB ...

Page 16

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 16 __________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600 © 1995 Maxim Integrated Products ...

Related keywords