19-3338; Rev 1; 3/05
4-Channel, 12-Bit System Monitors with Programmable
Trip Window and SMBus Alert Response
General Description
Features
♦ Monitor Mode
The MAX1363/MAX1364 low-power, 12-bit, 4-channel
analog-to-digital converters (ADCs) feature a digitally
programmable window comparator with an interrupt out-
put for automatic system-monitoring applications. Once
configured, monitor mode automatically asserts an inter-
rupt when any analog input exceeds the programmed
upper or lower thresholds, without interaction to the
host. The MAX1363/MAX1364 respond to the SMBus™
alert, allowing quick identification of the alarming device
on a shared interrupt. A programmable delay between
monitoring intervals lowers power consumption for
reduced monitoring rates.
Programmable Lower/Upper Trip Threshold
Alarm-Status Register Records Fault Events
SMBus Alert Response
Programmable Sampling Intervals
♦ 12-Bit, I2C-Compatible ADC
1 LSB IꢀL, 1 LSB DꢀL
♦ 4-Channel Single-Ended or 2-Channel Fully
Differential Inputs
♦ Software-Programmable Bipolar/Unipolar
Conversions
♦ Fast Sampling Rate
In addition, the MAX1363/MAX1364 integrate an inter-
nal voltage reference, a clock, and a 1.7MHz, high-
speed, I2C™-compatible, 2-wire serial interface. The
optimized interface allows a maximum conversion rate
of 94.4ksps in normal mode while reading back the
conversion results. Each of the four analog inputs is
configurable for single-ended or fully differential opera-
tion and unipolar or bipolar operation. Two scan modes
utilize on-chip random access memory (RAM) to allow
eight conversions of a selected channel or scanning of
a group of channels to reduce interface overhead.
94.4ksps While Continuously Reading
Conversions
133ksps in Monitor Mode
♦ High-Speed, I2C-Compatible Serial Interface
100kHz/400kHz Standard/Fast Mode
Up to 1.7MHz High-Speed Mode
Six Available I2C Slave Addresses
♦ Single Supply
2.7V to 3.6V (MAX1363)
4.5V to 5.5V (MAX1364)
These devices operate from a single 2.7V to 3.6V
(MAX1363) or 4.5V to 5.5V (MAX1364) supply and
require only 436µA at the maximum sampling rate of
133ksps in monitor mode and 670µA at the maximum
sampling rate of 94.4ksps. AutoShutdown™ powers
down the devices between conversions, reducing sup-
ply current to less than 1µA when idle.
♦ Internal Reference
2.048V (MAX1363)
4.096V (MAX1364)
♦ External Reference: 1V to V
♦ Low Power
DD
436µA in Monitor Mode (133ksps)
670µA at 94.4ksps
The full-scale analog-input range is determined by the
internal reference or by an externally applied reference
6µA at 1ksps
0.5µA in Power-Down Mode
voltage ranging from 1V to V . The MAX1363 features
DD
♦ Small Package
a 2.048V internal reference, and the MAX1364 features
a 4.096V internal reference.
10-Pin µMAX
SMBus is a trademark of Intel Corporation.
The MAX1363/MAX1364 are available in a 10-pin
I2C is a trademark of Philips Corporation. Purchase of I2C compo-
nents from Maxim Integrated Products, Inc. or one of its subli-
censed Associated Companies, conveys a license under the
Philips I2C Patent Rights to use these components in an I2C sys-
tem, provided that the system conforms to the I2C Standard
Specification as defined by Philips.
®
µMAX package and are specified over the extended
(-40°C to +85°C) temperature range. For 10-bit applica-
tions, refer to the pin-compatible MAX1361/MAX1362
data sheet.
Applications
System Monitoring/Supervision
Servers/Workstations
AutoShutdown is a trademark of Maxim Integrated Products, Inc.
µMAX is a registered trademark of Maxim Integrated Products, Inc.
High-Reliability Power Supplies
Medical Instrumentation
Typical Operating Circuit and Pin Configuration appear at
end of data sheet.
Ordering Information/Selector Guide
PART
MAX1363EUB
MAX1363LEUB*
MAX1363MEUB
TEMP RAꢀGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIꢀ-PACKAGE
10 µMAX
I2C SLAVE ADDRESS
0110100/0110101
0110010/0110011
0110110/0110111
SUPPLY VOLTAGE (V)
2.7 to 3.6
10 µMAX
2.7 to 3.6
10 µMAX
2.7 to 3.6
Ordering Information/Selector Guide continued at end of data sheet.
*Future product—contact factory for availability.
________________________________________________________________ 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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