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MAX1247ACPE+

更新时间： 2024-11-28 13:10:19
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MAX1247ACPE+ 数据手册

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19-1071; Rev 2; 10/01  
+2.7V, Low-Power, 4-Channel,  
Serial 12-Bit ADCs in QSOP-16  
General Description  
Features  
The MAX1246/MAX1247 12-bit data-acquisition systems  
combine a 4-channel multiplexer, high-bandwidth  
track/hold, and serial interface with high conversion  
speed and low power consumption. The MAX1246 oper-  
ates from a single +2.7V to +3.6V supply; the MAX1247  
operates from a single +2.7V to +5.25V supply. Both  
devices’ analog inputs are software configurable for  
unipolar/bipolar and single-ended/differential operation.  
ꢀ 4-Channel Single-Ended or 2-Channel  
Differential Inputs  
ꢀ Single-Supply Operation:  
+2.7V to +3.6V (MAX1246)  
+2.7V to +5.25V (MAX1247)  
ꢀ Internal 2.5V Reference (MAX1246)  
ꢀ Low Power: 1.2mA (133ksps, 3V supply)  
54µA (1ksps, 3V supply)  
The 4-wire serial interface connects directly to SPI™/  
QSPI™ and MICROWIRE™ devices without external  
logic. A serial strobe output allows direct connection to  
TMS320-family digital signal processors. The MAX1246/  
MAX1247 use either the internal clock or an external seri-  
al-interface clock to perform successive-approximation  
analog-to-digital conversions.  
1µA (power-down mode)  
ꢀ SPI/QSPI/MICROWIRE/TMS320-Compatible  
4-Wire Serial Interface  
ꢀ Software-Configurable Unipolar or Bipolar Inputs  
ꢀ 16-Pin QSOP Package (same area as 8-pin SO)  
The MAX1246 has an internal 2.5V reference, while the  
MAX1247 requires an external reference. Both parts have  
a reference-buffer amplifier with a 1.5ꢀ voltage-  
adjustment range. These devices provide a hard-wired  
SHDN pin and a software-selectable power-down, and  
can be programmed to automatically shut down at the  
end of a conversion. Accessing the serial interface auto-  
matically powers up the MAX1246/MAX1247, and the  
quick turn-on time allows them to be shut down between  
all conversions. This technique can cut supply current to  
under 60µA at reduced sampling rates. The MAX1246/  
MAX1247 are available in a 16-pin DIP and a small QSOP  
that occupies the same board area as an 8-pin SO.  
Ordering Information  
INL  
(LSB)  
PART  
TEMP RANGE PIN-PACKAGE  
MAX1246ACPE 0°C to +70°C  
16 Plastic DIP  
16 Plastic DIP  
16 QSOP  
1/2  
1
MAX1246BCPE  
MAX1246ACEE  
MAX1246BCEE  
0°C to +70°C  
0°C to +70°C  
0°C to +70°C  
1/2  
1
16 QSOP  
Ordering Information continued at end of data sheet.  
For 8-channel versions of these devices, see the  
MAX146/MAX147 data sheet.  
________________________Applications  
__________Typical Operating Circuit  
Portable Data Logging  
Medical Instruments  
Pen Digitizers  
+3V  
V
V
CH0  
DD  
DD  
0.1µF  
Data Acquisition  
0V TO  
+2.5V  
DGND  
Battery-Powered Instruments  
Process Control  
ANALOG  
INPUTS  
MAX1246  
CH3  
AGND  
COM  
CPU  
I/O  
VREF  
CS  
4.7µF  
SCLK  
SCK (SK)  
MOSI (SO)  
MISO (SI)  
DIN  
Pin Configuration appears at end of data sheet.  
DOUT  
REFADJ  
0.047µF  
SSTRB  
SHDN  
V
SPI and QSPI are registered trademarks of Motorola, Inc.  
SS  
MICROWIRE is a registered trademark of National  
Semiconductor Corp.  
________________________________________________________________ Maxim Integrated Products  
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at  
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.  
1234567...25

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MAX1247ACPE+ 替代型号

型号 品牌 替代类型 描述 数据表
MAX1247BCPE+ MAXIM

完全替代

 ADC, Successive Approximation, 12-Bit, 1 Func, 4 Channel, Serial Access, CMOS, PDIP16, 0.3
MAX1247BEPE MAXIM

完全替代

 +2.7V, Low-Power, 4-Channel, Serial 12-Bit ADCs in QSOP-16
MAX1247BCPE MAXIM

完全替代

 +2.7V, Low-Power, 4-Channel, Serial 12-Bit ADCs in QSOP-16

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 		+2.7V, Low-Power, 4-Channel, Serial 12-Bit ADCs in QSOP-16

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