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MAX189

更新时间： 2024-11-05 23:45:55
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美信 - MAXIM 转换器模数转换器
页数 文件大小 规格书
20页 178K
描述
+5V.Low-Power.12-Bit Serial ADCs

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MAX189 数据手册

 浏览型号MAX189的Datasheet PDF文件第2页浏览型号MAX189的Datasheet PDF文件第3页浏览型号MAX189的Datasheet PDF文件第4页浏览型号MAX189的Datasheet PDF文件第5页浏览型号MAX189的Datasheet PDF文件第6页浏览型号MAX189的Datasheet PDF文件第7页 
19-0196; Rev 0; 10/93  
+5 V, Lo w -P o w e r, 1 2 -Bit S e ria l ADCs  
MAX1  
__________________Ge n e ra l De s c rip t io n  
________________________________Fe a t u re s  
♦ 12-Bit Resolution  
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  
a n 8.5µs s uc c e s s ive -a p p roxima tion ADC, a fa s t  
track/hold (1.5µs), an on-chip clock, and a high-speed  
3-wire serial interface.  
♦ ±1⁄  
LSB Integral Nonlinearity (MAX187A/MAX189A)  
2
♦ Internal Track/Hold, 75kHz Sampling Rate  
♦ Single +5V Operation  
7/MAX189  
♦ Low Power: 2µA Shutdown Current  
1.5mA Operating Current  
The MAX187/MAX189 d ig itize s ig na ls a t a 75ks p s  
throughput rate. An external clock accesses data from  
the interface, which communicates without external  
hardware to most digital signal processors and micro-  
c ontrolle rs . The inte rfa c e is c omp a tib le with SPI™,  
QSPI™, and Microwire™.  
♦ Internal 4.096V Buffered Reference (MAX187)  
♦ 3-Wire Serial Interface, Compatible with SPI,  
QSPI, and Microwire  
♦ Small-Footprint 8-Pin DIP and 16-Pin SO  
_________________Ord e rin g In fo rm a t io n  
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.  
ERROR  
(LSB)  
PART  
TEMP. RANGE PIN-PACKAGE  
MAX187ACPA  
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*  
±1⁄  
±1  
2
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.  
±2  
±1⁄  
±1  
±2  
±1  
2
___________________________Ap p lic a t io n s  
Portable Data Logging  
Ordering Information continued on last page.  
* Dice are specified at T = +25°C, DC parameters only.  
A
Remote Digital Signal Processing  
Isolated Data Acquisition  
** Contact factory for availability and processing to MIL-STD-883.  
High-Accuracy Process Control  
_________________P in Co n fig u ra t io n s  
________________Fu n c t io n a l Dia g ra m  
6
TOP VIEW  
OUTPUT  
SHIFT  
REGISTER  
DOUT  
SCLK  
8
5
GND  
REF-  
DAC  
REF+  
AV = 1.638  
10k  
(4.096V)  
V
DD  
1
2
3
4
8
7
6
5
+2.5V  
BANDGAP  
SCLK  
CS  
AIN  
SHDN  
REF  
REFERENCE  
(MAX187 ONLY)  
12-BIT  
SAR  
MAX187  
MAX189  
DOUT  
4
2
REF  
GND  
AIN  
T/H  
COMPARATOR  
DIP  
7
3
MAX187  
MAX189  
CS  
CONTROL  
AND  
BUFFER ENABLE/DISABLE  
1
TIMING  
SHDN  
V
DD  
NOTE: PIN NUMBERS SHOWN ARE FOR 8-PIN DIPs ONLY.  
Pin Configurations continued on last page.  
™ SPI and QSPI are trademarks of Motorola. Microwire is a trademark of National Semiconductor.  
________________________________________________________________ Maxim Integrated Products  
Ca ll t o ll fre e 1 -8 0 0 -9 9 8 -8 8 0 0 fo r fre e s a m p le s o r lit e ra t u re .  
1
1234567...20

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