MAX144 Maxim, MAX144 Datasheet
MAX144
Manufacturer Part Number
MAX144
Description
+2.7V / Low-Power / 2-Channel / 108ksps / Serial 12-Bit ADCs in 8-Pin MAX
Manufacturer
Maxim
Datasheet
1.MAX144.pdf
(16 pages)
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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.
Power consumption is only 3.2mW (V
maximum sampling rate of 108ksps. At slower through-
put rates, the automatic shutdown (0.2µA) further
reduces power consumption.
The MAX144 provides 2-channel, single-ended opera-
tion and accepts input signals from 0 to V
MAX145 accepts pseudo-differential inputs ranging
from 0 to V
through the 3-wire serial interface, which is SPI™,
QSPI™, and MICROWIRE™-compatible.
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.
Battery-Powered Systems
Portable Data Logging
Isolated Data Acquisition
Process-Control Monitoring
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
19-1387; Rev 0; 11/98
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
( ) ARE FOR MAX145 ONLY
TOP VIEW
CH0 (CH+)
CH1 (CH-)
REF
GND
V
DD
. An external clock accesses data-
________________________________________________________________ Maxim Integrated Products
1
2
4
3
+2.7V, Low-Power, 2-Channel, 108ksps,
General Description
MAX/DIP
MAX144
MAX145
Pin Configuration
Instrumentation
Test Equipment
Medical Instruments
System Supervision
Applications
8
7
6
5
Serial 12-Bit ADCs in 8-Pin µMAX
DD
SCLK
DOUT
CS/SHDN
REF
= +3.6V) at the
REF
. The
* Dice are specified at T
** Contact factory for availability.
MAX144ACUA
MAX144BCUA
MAX144ACPA
MAX144BCPA
MAX144BC/D
MAX144AEUA -40°C to +85°C
MAX144BEUA
MAX144AEPA
MAX144BEPA -40°C to +85°C
MAX144AMJA
MAX144BMJA
MAX145ACUA
MAX145BCUA
MAX145ACPA
MAX145BCPA
MAX145BC/D
MAX145AEUA
MAX145BEUA
MAX145AEPA -40°C to +85°C
MAX145BEPA
MAX145AMJA
MAX145BMJA -55°C to +125°C
Single-Supply Operation (+2.7V to +5.25V)
Two Single-Ended Channels (MAX144)
One Pseudo-Differential Channel (MAX145)
Low Power
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
PART
0.9mA (108ksps, +3V Supply)
100µA (10ksps, +3V Supply)
10µA (1ksps, +3V Supply)
0.2µA (Power-Down Mode)
-40°C to +85°C
-40°C to +85°C
-55°C to +125°C 8 CERDIP**
-55°C to +125°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-55°C to +125°C
TEMP. RANGE
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
0°C to +70°C
0°C to +70°C
0°C to +70°C
A
= +25°C, DC parameters only.
Ordering Information
8 µMAX
8 µMAX
8 Plastic DIP
8 Plastic DIP
Dice*
8 µMAX
8 µMAX
8 Plastic DIP
8 Plastic DIP
8 CERDIP**
8 µMAX
8 µMAX
8 Plastic DIP
8 Plastic DIP
Dice*
8 µMAX
8 µMAX
8 Plastic DIP
8 Plastic DIP
8 CERDIP**
8 CERDIP**
PIN-PACKAGE
Features
±0.5
±1
±0.5
±1
±1
±0.5
±1
±0.5
±1
±0.5
±1
±0.5
±1
±0.5
±1
±1
±0.5
±1
±0.5
±1
±0.5
±1
(LSB)
INL
1
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