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MAX144

更新时间: 2023-12-20 18:46:16
品牌 Logo 应用领域
亚德诺 - ADI /
页数 文件大小 规格书
16页 964K
描述
+2.7V、低功耗、2通道、108ksps、串行12位ADC,8引脚μMAX封装

MAX144 数据手册

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19-1387; Rev 2; 10/05  
+2.7V, Low-Power, 2-Channel, 108ksps,  
Serial 12-Bit ADCs in 8-Pin µMAX  
General Description  
Features  
The MAX144/MAX145 low-power, 12-bit analog-to-  
digital converters (ADCs) are available in 8-pin µMAX®  
and DIP packages. Both devices operate with a single  
+2.7V to +5.25V supply and feature a 7.4µs succes-  
sive-approximation ADC, automatic power-down, fast  
wake-up (2.5µs), an on-chip clock, and a high-speed,  
3-wire serial interface.  
Single-Supply Operation (+2.7V to +5.25V)  
Two Single-Ended Channels (MAX144) One  
Pseudo-Differential Channel (MAX145)  
Low Power  
0.9mA (108ksps, +3V Supply)  
100µA (10ksps, +3V Supply)  
10µA (1ksps, +3V Supply)  
0.2µA (Power-Down Mode)  
Power consumption is only 3.2mW (V  
= +3.6V) at the  
DD  
maximum sampling rate of 108ksps. At slower through-  
put rates, the automatic shutdown (0.2µA) further  
reduces power consumption.  
Internal Track/Hold  
108ksps Sampling Rate  
The MAX144 provides 2-channel, single-ended opera-  
tion and accepts input signals from 0 to V  
. The  
REF  
SPI/QSPI/MICROWIRE-Compatible 3-Wire Serial  
MAX145 accepts pseudo-differential inputs ranging  
from 0 to V . An external clock accesses data-  
Interface  
REF  
through the 3-wire serial interface, which is SPI™,  
QSPI™, and MICROWIRE™-compatible.  
Space-Saving 8-Pin µMAX Package  
Pin-Compatible 10-Bit Versions Available  
Excellent dynamic performance and low power, com-  
bined with ease of use and small package size, make  
these converters ideal for battery-powered and data-  
acquisition applications, or for other circuits with  
demanding power-consumption and space require-  
ments. For pin-compatible 10-bit ADCs, see the  
MAX157 and MAX159 data sheets.  
Ordering Information  
TEMP  
PIN-  
INL  
PKG  
PART  
RANGE PACKAGE  
(LSB) CODE  
0°C to  
8 µMAX  
+70°C  
0°C to  
8 µMAX  
+70°C  
MAX144ACUA  
MAX144BCUA  
MAX144ACPA  
MAX144BCPA  
MAX144BC/D  
MAX144AEUA  
MAX144BEUA  
MAX144AEPA  
MAX144BEPA  
MAX144AMJA  
MAX144BMJA  
0.5  
1
U8-1  
U8-1  
P8-1  
P8-1  
Applications  
Battery-Powered Systems Instrumentation  
0°C to  
8 Plastic DIP  
+70°C  
0.5  
1
Portable Data Logging  
Test Equipment  
Isolated Data Acquisition  
Medical Instruments  
0°C to  
8 Plastic DIP  
+70°C  
Process-Control Monitoring System Supervision  
0°C to  
+70°C  
Dice*  
1
Pin Configuration  
-40°C to  
8 µMAX  
+85°C  
-40°C to  
8 µMAX  
+85°C  
0.5  
1
U8-1  
U8-1  
P8-1  
P8-1  
J8-2  
J8-2  
TOP VIEW  
-40°C to  
8 Plastic DIP  
+85°C  
0.5  
1
V
1
2
3
4
8
7
6
5
SCLK  
DD  
-40°C to  
CH0 (CH+)  
CH1 (CH-)  
GND  
DOUT  
CS/SHDN  
REF  
8 Plastic DIP  
+85°C  
MAX144  
MAX145  
-55°C to  
8 CERDIP**  
+125°C  
0.5  
1
-55°C to  
8 CERDIP**  
+125°C  
( ) ARE FOR MAX145 ONLY  
µMAX/DIP  
*Dice are specified at T = +25°C, DC parameters only.  
A
**Contact factory for availability.  
µMAX is a registered trademark of Maxim Integrated Products, Inc.  
SPI and QSPI are trademarks of Motorola, Inc.  
Ordering Information continued at end of data sheet.  
MICROWIRE is a 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.  

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