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MAX187ACPA+ Datasheet

  • MAX187ACPA+

  • A/D Converter (A-D) IC; Resolution (Bits):12; Sample Rate:75...

  • 20頁(yè)

  • Maxim   Maxim

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19-0196; Rev 0; 10/93
ANUAL
N KIT M
LUATIO ATA SHEET
EVA
WS D
FOLLO
+5V, Low-Power, 12-Bit Serial ADCs
________________________________Features
o
o
o
o
o
12-Bit Resolution
鹵
1
鈦?/div>
2
LSB Integral Nonlinearity (MAX187A/MAX189A)
Internal Track/Hold, 75kHz Sampling Rate
Single +5V Operation
Low Power: 2碌A(chǔ) 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
__________________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 8.5碌s successive-approximation ADC, a fast
track/hold (1.5碌s), 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鈩?
QSPI鈩? and Microwire鈩?
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 10碌W 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.
MAX187/MAX189
_________________Ordering Information
PART
MAX187ACPA
MAX187BCPA
MAX187CCPA
MAX187ACWE
MAX187BCWE
MAX187CCWE
MAX187BC/D
TEMP. RANGE PIN-PACKAGE ERROR
(LSB)
0擄C to +70擄C
0擄C to +70擄C
0擄C to +70擄C
0擄C to +70擄C
0擄C to +70擄C
0擄C to +70擄C
0擄C to +70擄C
8 Plastic DIP
8 Plastic DIP
8 Plastic DIP
16 Wide SO
16 Wide SO
16 Wide SO
Dice*
鹵
1
鈦?/div>
2
鹵1
鹵2
鹵
1
鈦?/div>
2
鹵1
鹵2
鹵1
___________________________Applications
Portable Data Logging
Remote Digital Signal Processing
Isolated Data Acquisition
High-Accuracy Process Control
Ordering Information continued on last page.
* Dice are specified at T
A
= +25擄C, DC parameters only.
** Contact factory for availability and processing to MIL-STD-883.
________________Functional Diagram
OUTPUT
SHIFT
REGISTER
6
DOUT
8
SCLK
_________________Pin Configurations
TOP VIEW
GND
5
AV = 1.638
+2.5V
BANDGAP
REFERENCE
(MAX187 ONLY)
10k
(4.096V)
REF-
DAC
REF+
V
DD
AIN
12-BIT
SAR
1
2
8
7
SCLK
CS
DOUT
GND
REF
AIN
4
2
SHDN
3
REF
4
MAX187
MAX189
6
5
T/H
COMPARATOR
MAX187
MAX189
VDD
1
7
BUFFER ENABLE/DISABLE CONTROL
AND
TIMING
3
DIP
CS
SHDN
NOTE: PIN NUMBERS SHOWN ARE FOR 8-PIN DIPs ONLY.
Pin Configurations continued on last page.
鈩?SPI and QSPI are trademarks of Motorola. Microwire is a trademark of National Semiconductor.
________________________________________________________________
Maxim Integrated Products
1
Call toll free 1-800-998-8800 for free samples or literature.

MAX187ACPA+ 產(chǎn)品屬性

  • Lead (SnPb) Finish for COTSObsolescence Mitigation Program

  • 50

  • 集成電路 (IC)

  • 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器

  • -

  • 12

  • 75k

  • MICROWIRE?，QSPI?，串行，SPI?

  • 1

  • 500mW

  • 單電源

  • 0°C ~ 70°C

  • 通孔

  • 8-DIP（0.300"，7.62mm）

  • 8-PDIP

  • 管件

  • 1 個(gè)單端，單極

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