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MAX189BCWE Datasheet(PDF) 1 Page - Maxim Integrated Products

Part # MAX189BCWE
Description  5V, Low-Power, 12-Bit Serial ADCs
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX189BCWE Datasheet(HTML) 1 Page - Maxim Integrated Products

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__________________General Description
The MAX187/MAX189 serial 12-bit analog-to-digital
converters (ADCs) operate from a single +5V supply
and accept a 0V to 5V analog input. Both parts feature
an 8.5µs successive-approximation ADC, a fast
track/hold (1.5µs), an on-chip clock, and a high-speed
3-wire serial interface.
The MAX187/MAX189 digitize signals at a 75ksps
throughput rate. An external clock accesses data from
the interface, which communicates without external
hardware to most digital signal processors and micro-
controllers. The interface is compatible with SPI™,
QSPI™, and Microwire™.
The MAX187 has an on-chip buffered reference, and
the MAX189 requires an external reference. Both the
MAX187 and MAX189 save space with 8-pin DIP and
16-pin SO packages. Power consumption is 7.5mW
and reduces to only 10µW in shutdown.
Excellent AC characteristics and very low power con-
sumption combined with ease of use and small pack-
age size make these converters ideal for remote DSP
and sensor applications, or for circuits where power
consumption and space are crucial.
___________________________Applications
Portable Data Logging
Remote Digital Signal Processing
Isolated Data Acquisition
High-Accuracy Process Control
________________________________Features
o 12-Bit Resolution
o ±12 LSB Integral Nonlinearity (MAX187A/MAX189A)
o Internal Track/Hold, 75kHz Sampling Rate
o Single +5V Operation
o Low Power: 2µA Shutdown Current
1.5mA Operating Current
o Internal 4.096V Buffered Reference (MAX187)
o 3-Wire Serial Interface, Compatible with SPI,
QSPI, and Microwire
o Small-Footprint 8-Pin DIP and 16-Pin SO
_________________Ordering Information
+5V, Low-Power, 12-Bit Serial ADCs
________________________________________________________________
Maxim Integrated Products
1
Call toll free 1-800-998-8800 for free samples or literature.
19-0196; Rev 0; 10/93
PART
TEMP. RANGE PIN-PACKAGE ERROR
(LSB)
MAX187ACPA
0°C to +70°C
8 Plastic DIP
±
1
2
MAX187BCPA
0°C to +70°C
8 Plastic DIP
±1
MAX187CCPA
0°C to +70°C
8 Plastic DIP
±2
MAX187ACWE
0°C to +70°C
16 Wide SO
±
1
2
MAX187BCWE
0°C to +70°C
16 Wide SO
±1
MAX187CCWE
0°C to +70°C
16 Wide SO
±2
MAX187BC/D
0°C to +70°C
Dice*
±1
™ SPI and QSPI are trademarks of Motorola. Microwire is a trademark of National Semiconductor.
Ordering Information continued on last page.
* Dice are specified at TA = +25°C, DC parameters only.
** Contact factory for availability and processing to MIL-STD-883.
________________Functional Diagram
GND
5
REF
4
AIN
2
VDD
1
T/H
BANDGAP
REFERENCE
+2.5V
(MAX187 ONLY)
10k
AV = 1.638
(4.096V)
REF-
REF+
DAC
OUTPUT
SHIFT
REGISTER
DOUT
6
SCLK
8
CS
7
SHDN
3
CONTROL
AND
TIMING
12-BIT
SAR
COMPARATOR
BUFFER ENABLE/DISABLE
NOTE: PIN NUMBERS SHOWN ARE FOR 8-PIN DIPs ONLY.
MAX187
MAX189
TOP VIEW
1
2
3
4
8
7
6
5
SCLK
CS
DOUT
GND
REF
SHDN
AIN
VDD
DIP
MAX187
MAX189
Pin Configurations continued on last page.
_________________Pin Configurations
EVALUATION
KIT MANUAL
FOLLOWS
DATA
SHEET


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