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Maxim Integrated Products - 4-Channel 10-Bit System Monitors

Numéro de référence MAX1361
Description 4-Channel 10-Bit System Monitors
Fabricant Maxim Integrated Products 
Logo Maxim Integrated Products 





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MAX1361 fiche technique
19-3268; Rev 3; 4/06
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4-Channel, 10-Bit, System Monitors with Programmable
Trip Window and SMBus Alert Response
General Description
The MAX1361/MAX1362 low-power, 10-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 MAX1361/MAX1362 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 at
reduced monitoring rates.
In addition, the MAX1361/MAX1362 integrate an internal
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 operation and unipolar
or bipolar operation. Two scan modes utilize on-chip
random access memory (RAM) to allow eight conver-
sions of a selected channel or scanning of a group of
channels to reduce interface overhead.
These devices operate from a single 2.7V to 3.6V
(MAX1361) or 4.5V to 5.5V (MAX1362) supply and
require only 436µA at the maximum sampling rate of
150ksps 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 0.5µA when idle.
The full-scale analog-input range is determined by the
internal reference or by an externally applied reference
voltage ranging from 1V to VDD. The MAX1361 features
a 2.048V internal reference, and the MAX1362 features
a 4.096V internal reference.
The MAX1361/MAX1362 are available in a 10-pin
µMAX® package and are specified over the extended
(-40°C to +85°C) temperature range. For 12-bit applica-
tions, refer to the pin-compatible MAX1363/MAX1364
data sheet.
Applications
System Monitoring/Supervision
Servers/Workstations
High Reliability Power Supplies
Medical Instrumentation
Features
Monitor Mode
Programmable Lower/Upper Trip Threshold
Alarm-Status Register Records Fault Events
SMBus Alert Response
Programmable Sampling Intervals
10-Bit I2C-Compatible ADC
±1 LSB INL, ±1 LSB DNL
4-Channel Single-Ended or 2-Channel Fully
Differential Inputs
Software Programmable Bipolar/Unipolar
Conversions
Fast Sampling Rate
94.4ksps While Continuously Reading
Conversions
150ksps in Monitor Mode
High-Speed I2C-Compatible Serial Interface
100kHz/400kHz Standard/Fast Mode
Up to 1.7MHz High-Speed Mode
6 Available I2C Slave Addresses
Single Supply
2.7V to 3.6V (MAX1361)
4.5V to 5.5V (MAX1362)
Internal Reference
2.048V (MAX1361)
4.096V (MAX1362)
External Reference: 1V to VDD
Low Power
436µA in Monitor Mode (150ksps)
670µA at 94.4ksps
6µA at 1ksps
0.5µA in Power-Down Mode
Small Package
10-Pin µMAX
SMBus is a trademark of Intel Corporation.
Purchase of I2C components from Maxim Integrated Products,
Inc. or one of its sublicensed Associated Companies, conveys a
license under the Philips I2C Patent Rights to use these compo-
nents in an I2C system, provided that the system conforms to the
I2C Standard Specification as defined by Philips.
AutoShutdown is a trademark of Maxim Integrated Products, Inc.
µMAX is a registered trademark of Maxim Integrated Products, Inc.
Typical Operating Circuit and Pin Configuration appear at
end of data sheet.
Ordering Information/Selector Guide
PART
TEMP RANGE PIN-PACKAGE I2C SLAVE ADDRESS
SUPPLY
VOLTAGE (V)
PACKAGE
CODE
MAX1361EUB
-40°C to +85°C 10 µMAX
MAX1361LEUB*
-40°C to +85°C 10 µMAX
MAX1361MEUB
-40°C to +85°C 10 µMAX
*Future product—contact factory for availability.
0110100/0110101
2.7 to 3.6
U10C-4
0110010/0110011
2.7 to 3.6
U10C-4
0110110/0110111
2.7 to 3.6
U10C-4
Ordering Information/Selector Guide continued at end of data sheet.
________________________________________________________________ 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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