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Part Number: MAX144
Description: The MAX144/MAX145 low-power, 12-bit analog-todigital converters (ADCs) are available in 8-pin µM...
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MAX144
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DataSheet
General Description
MAX144 General Description
The MAX144/MAX145 low-power, 12-bit analog-todigital 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 successive- approximation ADC, automatic power-down, fast wake-up (2.5µs), an on-chip clock, and a high-speed, 3-wire serial interface.
Power consumption is only 3.2mW (VDD = +3.6V) at the maximum sampling rate of 108ksps. At slower throughput rates, the automatic shutdown (0.2µA) further reduces power consumption.
The MAX144 provides 2-channel, single-ended operation and accepts input signals from 0 to VREF. The MAX145 accepts pseudo-differential inputs ranging from 0 to VREF. An external clock accesses datathrough the 3-wire serial interface, which is SPI™ QSPI™, and MICROWIRE™-compatible.
Excellent dynamic performance and low power, combined with ease of use and small package size, make these converters ideal for battery-powered and dataacquisition applications, or for other circuits with demanding power-consumption and space requirements. For pin-compatible 10-bit ADCs, see the MAX157 and MAX159.
MAX144 Maximum Ratings
VDD to GND..................................................................-0.3V to +6V
CH0, CH1 (CH+, CH-) to GND ....................... -0.3V to (VDD + 0.3V)
REF to GND .................................................. -0.3V to (VDD + 0.3V)
Digital Inputs to GND. ............................................... -0.3V to +6V
DOUT to GND................................................ -0.3V to (VDD + 0.3V)
DOUT Sink Current ............................................................... 25mA
Continuous Power Dissipation (TA = +70)
µMAX (derate 4.1mW/ above +70) .......................... 330mW
Plastic DIP (derate 9.09mW/ above +70) .................727mW
CERDIP (derate 8.00mW/ above +70) ..................... 640mW
Operating Temperature Ranges (TA)
MAX144/MAX145_C_A .............................................0 to +70
MAX144/MAX145_E_A. .........................................-40 to +85
MAX144/MAX145_M_A ....................................... -55 to +125
Storage Temperature Range .................................-65 to +150
Lead Temperature (soldering, 10sec) .................................+300
CH0, CH1 (CH+, CH-) to GND ....................... -0.3V to (VDD + 0.3V)
REF to GND .................................................. -0.3V to (VDD + 0.3V)
Digital Inputs to GND. ............................................... -0.3V to +6V
DOUT to GND................................................ -0.3V to (VDD + 0.3V)
DOUT Sink Current ............................................................... 25mA
Continuous Power Dissipation (TA = +70)
µMAX (derate 4.1mW/ above +70) .......................... 330mW
Plastic DIP (derate 9.09mW/ above +70) .................727mW
CERDIP (derate 8.00mW/ above +70) ..................... 640mW
Operating Temperature Ranges (TA)
MAX144/MAX145_C_A .............................................0 to +70
MAX144/MAX145_E_A. .........................................-40 to +85
MAX144/MAX145_M_A ....................................... -55 to +125
Storage Temperature Range .................................-65 to +150
Lead Temperature (soldering, 10sec) .................................+300
MAX144 Features
* 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)
* Internal Track/Hold
* 108ksps Sampling Rate
* SPI/QSPI/MICROWIRE-Compatible 3-Wire
Serial Interface
* Space-Saving 8-Pin µMAX Package
* Pin-Compatible 10-Bit Versions Available
* 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)
* Internal Track/Hold
* 108ksps Sampling Rate
* SPI/QSPI/MICROWIRE-Compatible 3-Wire
Serial Interface
* Space-Saving 8-Pin µMAX Package
* Pin-Compatible 10-Bit Versions Available
MAX144 Typical Application
Battery-Powered Systems
Portable Data Logging
Isolated Data Acquisition
Process-Control Monitoring
Instrumentation
Test Equipment
Medical Instruments
System Supervision
Portable Data Logging
Isolated Data Acquisition
Process-Control Monitoring
Instrumentation
Test Equipment
Medical Instruments
System Supervision
MAX144 Connection Diagram
MAX144
PDF/DataSheet Download
- Datasheet: MAX144
- File Size: 179356 KB
- Manufacturer: MAXIM [Maxim Integrated Products]
- Click here to Download
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