General Description
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.
In addition, the MAX1363/MAX1364 integrate an inter-
nal voltage reference, a clock, and a 1.7MHz, high-
speed, I
2
C-compatible, 2-wire serial interface. The opti-
mized interface allows a maximum conversion rate of
94.4ksps in normal mode while reading back the con-
version results. Each of the four analog inputs is config-
urable for single-ended or fully differential operation
and unipolar or bipolar operation. Two scan modes uti-
lize 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.
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.
The full-scale analog-input range is determined by the
internal reference or by an externally applied reference
voltage ranging from 1V to V
DD
. The MAX1363 features
a 2.048V internal reference, and the MAX1364 features
a 4.096V internal reference.
The MAX1363/MAX1364 are available in a 10-pin
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
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
♦ 12-Bit, I
2
C-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
133ksps in Monitor Mode
♦ High-Speed, I
2
C-Compatible Serial Interface
100kHz/400kHz Standard/Fast Mode
Up to 1.7MHz High-Speed Mode
Six Available I
2
C Slave Addresses
♦ Single Supply
2.7V to 3.6V (MAX1363)
4.5V to 5.5V (MAX1364)
♦ Internal Reference
2.048V (MAX1363)
4.096V (MAX1364)
♦ External Reference: 1V to V
DD
♦ Low Power
436µA in Monitor Mode (133ksps)
670µA at 94.4ksps
6µA at 1ksps
0.5µA in Power-Down Mode
♦ Small Package
10-Pin µMAX
MAX1363/MAX1364
4-Channel, 12-Bit System Monitors with Programmable
Trip Window and SMBus Alert Response
________________________________________________________________
Maxim Integrated Products
1
Ordering Information/Selector Guide
19-3338; Rev 3; 3/08
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
EVALUATION KIT
AVAILABLE
