參數(shù)資料
型號(hào)： MAX187
廠商： Maxim Integrated Products, Inc.
元件分類： ADC
英文描述： +5V, Low-Power, 12-Bit Serial ADCs(8.5μs轉(zhuǎn)換時(shí)間，單通道，串行12位A/D轉(zhuǎn)換器)
中文描述： +5V、低功耗、12位串行ADC
文件頁(yè)數(shù)： 1/20頁(yè)
文件大?。?/td> 177K
代理商： MAX187
__________________General Desc ription
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.
___________________________Applic ations
Portable Data Logging
Remote Digital Signal Processing
Isolated Data Acquisition
High-Accuracy Process Control
________________Func tional Diagram
________________________________Features
o
12-Bit Resolution
o
±
1
2
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
M
+5V, Low-Power, 12-Bit S erial ADCs
________________________________________________________________ Maxim Integrated Products
Call toll free 1-800-998-8800 for free samples or literature.
1
19-0196; Rev 0; 10/93
PART
TEMP. RANGE PIN-PACKAGE(LSB)
±
1
2
±1
±2
±
1
2
±1
±2
±1
MAX187
ACPA
MAX187BCPA
MAX187CCPA
MAX187ACWE
MAX187BCWE
MAX187CCWE
MAX187BC/D
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
8 Plastic DIP
8 Plastic DIP
8 Plastic DIP
16 Wide SO
16 Wide SO
16 Wide SO
Dice*
SPI and QSPI are trademarks of Motorola. Microwire is a trademark of National Semiconductor.
Ordering Information continued on last page.
* Dice are specified at T
A
= +25°C, DC parameters only.
**Contact factory for availability and processing to MIL-STD-883.
GND5
REF4
AIN2
VDD
1
T/H
BANDGAP
REFERENCE
(MAX187 ONLY)
+2.5V
10k
AV = 1.638
(4.096V)
REF-
REF+
DAC
OUTPUT
SHIFT
REGISTER
DOUT
SCLK
6
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
V
DD
DIP
MAX187
MAX189
Pin Configurations continued on last page.
_________________Pin Configurations
EVALUATION KIT MANUAL
FOLLOWS DATA SHEET
相關(guān)PDF資料
PDF描述
MAX189 +5V, Low-Power, 12-Bit Serial ADCs(8.5μs轉(zhuǎn)換時(shí)間，單通道，串行12位A/D轉(zhuǎn)換器)
MAX187ACWE Fixed-Point Digital Signal Processor 288-BGA MICROSTAR
MAX187AMJA Fixed-Point Digital Signal Processor 288-BGA MICROSTAR
MAX187CEPA +5V, Low-Power, 12-Bit Serial ADCs
MAX189CEPA 031-0560-161
相關(guān)代理商/技術(shù)參數(shù)
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