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MAX1361MEUB+

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24
MAX1361/MAX1362
4-Channel, 10-Bit, System Monitor with Programmable
Trip Window and SMBus Alert Response
_______________________________________________________________________________________ 7
300
400
350
500
450
600
550
650
750
700
800
-40 -10 5-25 20 35 50 65 80
SUPPLY CURRENT vs. TEMPERATURE
MAX1361 toc04
TEMPERATURE (°C)
SUPPLY CURRENT (μA)
INTERNAL REFERENCE
MAX1362
MAX1361
MAX1362
MAX1361
INTERNAL REFERENCE
EXTERNAL REFERENCE
EXTERNAL REFERENCE
SETUP BYTE
EXT REF: 10111010
INT REF: 11011010
0
0.2
0.1
0.4
0.3
0.5
0.6
2.7 5.2
SHUTDOWN SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX1361 toc05
INPUT VOLTAGE (V)
I
DD
(μA)
3.73.2 4.2 4.7
SDA = SCL = V
DD
0
0.10
0.05
0.20
0.15
0.30
0.25
0.35
0.45
0.40
0.50
-40 -10 5-25 20 35 50 65 80
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
MAX1361 toc06
TEMPERATURE (°C)
SUPPLY CURRENT (μA)
MAX1362
MAX1361
200
300
250
350
400
450
500
550
600
650
700
750
800
0 2030406080100
AVERAGE SUPPLY CURRENT
vs. CONVERSION RATE (EXTERNAL CLOCK)
MAX1361 toc07
CONVERSION RATE (ksps)
AVERAGE I
DD
(μA)
010 50 70 90
A
B
A) INTERNAL REFERENCE ALWAYS ON
B) EXTERNAL REFERENCE
0.9990
0.9994
0.9992
0.9998
0.9996
1.0002
1.0000
1.0004
1.0008
1.0006
1.0010
-40 -10 5-25 20 35 50 65 80
INTERNAL REFERENCE VOLTAGE
vs. TEMPERATURE
MAX1361 toc08
TEMPERATURE (°C)
V
REF
NORMALIZED
MAX1362
MAX1361
NORMALIZED TO REFERENCE VALUE
AT +25°C
0.99990
0.99994
0.99992
0.99998
0.99996
1.00002
1.00000
1.00004
1.00008
1.00006
1.00010
2.7 3.3 3.6 3.93.0 4.2 4.5 4.8 5.1 5.4
NORMALIZED REFERENCE VOLTAGE
vs. SUPPLY VOLTAGE
MAX1361 toc09
V
DD
(V)
V
REF
NORMALIZED
MAX1362
NORMALIZED TO
REFERENCE VALUE AT
V
DD
= 5V
MAX1361
NORMALIZED TO
REFERENCE VALUE AT
V
DD
= 3.3V
-1.0
-0.8
-0.9
-0.6
-0.7
-0.4
-0.5
-0.3
-0.1
-0.2
0
-40 -10 5-25 20 35 50 65 80
OFFSET ERROR vs. TEMPERATURE
MAX1361 toc10
TEMPERATURE (°C)
OFFSET ERROR (LSB)
-1.0
-0.8
-0.9
-0.6
-0.7
-0.4
-0.5
-0.3
-0.1
-0.2
0
2.7 3.3 3.6 3.93.0 4.2 4.5 4.8 5.1 5.4
OFFSET ERROR vs. SUPPLY VOLTAGE
MAX1361 toc11
V
DD
(V)
OFFSET ERROR (LSB)
Typical Operating Characteristics (continued)
(V
DD
= 3.3V (MAX1361), V
DD
= 5V (MAX1362), f
SCL
= 1.7MHz, external clock, f
SAMPLE
= 94.4ksps, single-ended, unipolar,
T
A
= +25°C, unless otherwise noted.)
0
0.2
0.1
0.4
0.3
0.6
0.5
0.7
0.9
0.8
1.0
-40 -10 5-25 20 35 50 65 80
GAIN ERROR vs. TEMPERATURE
MAX1361 toc12
TEMPERATURE (°C)
GAIN ERROR (LSB)
MAX1361/MAX1362
4-Channel, 10-Bit, System Monitor with Programmable
Trip Window and SMBus Alert Response
8 _______________________________________________________________________________________
PIN NAME FUNCTION
1 AIN0 Analog Input
2 AIN1 Analog Input
3 AIN2 Analog Input
4 AIN3/V
REF
Analog Input or Reference Input or Output. See Table 3.
5A0I
2
C Address Select Input. Connect to V
DD
or GND. See Table 1.
6 INT Active-Low, Open-Drain Interrupt Output
7 SCL I
2
C Clock Input
8 SDA I
2
C Data Input/Output
9 GND Ground
10 V
DD
Positive Supply Voltage. Bypass V
DD
to GND with a 0.1µF capacitor.
Pin Description
MAX1361/MAX1362
10-BIT
ADC
4:1
MUX
CONTROL
TRIP
THRESHOLDS
I
2
C
INTERFACE
SDA
SCL
A0
INT
CLK
INT
REF
GND
V
DD
AIN0
AIN1
AIN2
AIN3/
REF
Functional Diagram
0
0.3
0.2
0.1
0.4
0.5
0.6
0.7
0.8
0.9
1.0
2.7 3.73.2 4.2 4.7 5.2
GAIN ERROR vs. SUPPLY VOLTAGE
MAX1361 toc13
V
DD
(V)
GAIN ERROR (LSB)
MONITOR-MODE SUPPLY CURRENT
vs. SPEED
MAX1361 toc14
SPEED (ksps)
SUPPLY CURRENT (μA)
125100755025
100
200
300
400
500
600
700
0
0 150
INTERNAL REF
EXTERNAL REF
Typical Operating Characteristics (continued)
(V
DD
= 3.3V (MAX1361), V
DD
= 5V (MAX1362), f
SCL
= 1.7MHz, external clock, f
SAMPLE
= 94.4ksps, single-ended, unipolar,
T
A
= +25°C, unless otherwise noted.)
Detailed Description
The MAX1361/MAX1362 4-channel ADCs use succes-
sive-approximation conversion techniques and fully dif-
ferential input track/hold (T/H) circuitry to capture and
convert analog signals to a serial 10-bit digital output.
The MAX1361/MAX1362 feature a monitor mode with
programmable trip thresholds and window comparator.
The monitor function asserts an interrupt when any
channel violates the programmed upper or lower
thresholds. SMBus alert response allows the host
microcontroller (µC) to quickly identify which device
caused the interrupt. A programmable delay between
monitoring intervals lowers power consumption at lower
monitor rates.
The MAX1361/MAX1362 integrate an internal voltage
reference and clock. The software configures the ana-
log inputs for unipolar/bipolar and single-ended/fully
differential operation. Integrated first-in/first-out (FIFO)
allows conversion of all channels, or eight conversions
on a selected channel to reduce interface overhead. An
I
2
C-compatible serial interface complies with standard,
fast, and high-speed (1.7MHz) modes.
MAX1361/MAX1362
4-Channel, 10-Bit, System Monitor with Programmable
Trip Window and SMBus Alert Response
_______________________________________________________________________________________ 9
t
SU.STA
t
SU.DAT
t
HIGH
t
R
t
F
t
HD.DAT
t
HD.STA
S
Sr
ACK
9
SCL
SDA
t
SU.STA
t
LOW
t
BUF
t
SU.STO
PS
t
R
t
F
Figure 1a. F/S-Mode 2-Wire Serial-Interface Timing
V
DD
I
OL
I
OH
V
OUT
400pF
SDA
Figure 2. Load Circuits
t
HD.STA
t
SU.DAT
t
HIGH
t
FCL
t
HD.DAT
t
HD.STA
Sr Sr
ACK
SCL
SDA
t
SU.STA
t
LOW
t
SU.STO
S
t
RCL
t
RCL1
HS-MODE
1 9
F/S-MODE
t
FDA
t
RDA
P
Figure 1b. HS-Mode 2-Wire Serial-Interface Timing
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24

MAX1361MEUB+

Mfr. #:
Buy MAX1361MEUB+
Manufacturer:
Maxim Integrated
Description:
Analog to Digital Converters - ADC 10-Bit 4Ch 150ksps 3.6V Precision ADC
Lifecycle:
New from this manufacturer.
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