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MAX1617AMEE

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20
Remote/Local Temperature Sensor
with SMBus Serial Interface
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com
MAX1617
________________General Description
The MAX1617 is a precise digital thermometer that
reports the temperature of both a remote sensor and its
own package. The remote sensor is a diode-connected
transistor—typically a low-cost, easily mounted 2N3904
NPN type—that replaces conventional thermistors or
thermocouples. Remote accuracy is ±3°C for multiple
transistor manufacturers, with no calibration needed.
The remote channel can also measure the die tempera-
ture of other ICs, such as microprocessors, that contain
an on-chip, diode-connected transistor.
The 2-wire serial interface accepts standard System
Management Bus (SMBus) Write Byte, Read Byte, Send
Byte, and Receive Byte commands to program the alarm
thresholds and to read temperature data. The data for-
mat is 7 bits plus sign, with each bit corresponding to
1°C, in twos-complement format. Measurements can be
done automatically and autonomously, with the conver-
sion rate programmed by the user or programmed to
operate in a single-shot mode. The adjustable rate allows
the user to control the supply-current drain.
The MAX1617 is available in a small, 16-pin QSOP sur-
face-mount package.
________________________Applications
Desktop and Notebook Central Office
Computers Telecom Equipment
Smart Battery Packs Test and Measurement
LAN Servers Multi-Chip Modules
Industrial Controls
____________________________Features
♦ Two Channels: Measures Both Remote and Local
Temperatures
♦ No Calibration Required
♦ SMBus 2-Wire Serial Interface
♦ Programmable Under/Overtemperature Alarms
♦ Supports SMBus Alert Response
♦ Accuracy:
±2°C (+60°C to +100°C, local)
±3°C (-40°C to +125°C, local)
±3°C (+60°C to +100°C, remote)
♦ 3µA (typ) Standby Supply Current
♦ 70µA (max) Supply Current in Auto-Convert Mode
♦ +3V to +5.5V Supply Range
♦ Small, 16-Pin QSOP Package
MAX1617
SMBCLK
ADD0 ADD1
V
CC
STBY
GND
ALERT
SMBDATA
DXP
DXN
INTERRUPT
TO µC
3V TO 5.5V
200Ω
0.1µF
CLOCK
10k EACH
DATA
2N3904
2200pF
___________________Pin Configuration
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
N.C. N.C.
STBY
SMBCLK
N.C.
SMBDATA
ALERT
ADD0
N.C.
TOP VIEW
MAX1617
QSOP
V
CC
DXP
ADD1
DXN
N.C.
GND
GND
+
__________Typical Operating Circuit
19-1265; Rev 2; 11/12
PART
MAX1617MEE+ -55°C to +125°C
TEMP. RANGE PIN-PACKAGE
16 QSOP
_______________Ordering Information
+Denotes a lead(Pb)-free/RoHS-compliant package.
2
Remote/Local Temperature Sensor
with SMBus Serial Interface
MAX1617
Maxim Integrated
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
CC
= +3.3V, T
A
= 0°C to +85°C, unless otherwise noted.) (Note 1)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
V
CC
to GND..............................................................-0.3V to +6V
DXP, ADD_ to GND ....................................-0.3V to (V
CC
+ 0.3V)
DXN to GND ..........................................................-0.3V to +0.8V
SMBCLK, SMBDATA, ALERT, STBY to GND ...........-0.3V to +6V
SMBDATA, ALERT Current .................................-1mA to +50mA
DXN Current .......................................................................±1mA
ESD Protection (SMBCLK, SMBDATA,
ALERT, human body model) .......................................... 4000V
ESD Protection (other pins, human body model)...............2000V
Continuous Power Dissipation (T
A
= +70°C)
QSOP (derate 8.30mW/°C above +70°C).....................667mW
Operating Temperature Range .........................-55°C to +125°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +165°C
Lead Temperature (soldering, 10sec) .............................+300°C
T
A
= +60°C to +100°C
Monotonicity guaranteed
ADD0, ADD1; momentary upon power-on reset
DXP forced to 1.5V
Logic inputs
forced to V
CC
or GND
Auto-convert mode
From stop bit to conversion complete (both channels)
V
CC
, falling edge
T
A
= 0°C to +85°C
V
CC
input, disables A/D conversion, rising edge
Auto-convert mode, average
measured over 4sec. Logic
inputs forced to V
CC
or GND.
CONDITIONS
µA160Address Pin Bias Current
V0.7DXN Source Voltage
µA
81012
80 100 120
Remote-Diode Source Current
%-25 25Conversion Rate Timing Error
ms94 125 156Conversion Time
µA
120 180
35 70
Average Operating Supply Current
-2 2
Bits8Temperature Resolution (Note 2)
µA
4
Standby Supply Current
310
mV50POR Threshold Hysteresis
V1.0 1.7 2.5Power-On Reset Threshold
°C
-3 3
Initial Temperature Error,
Local Diode (Note 3)
V3.0 5.5Supply-Voltage Range
V2.60 2.80 2.95Undervoltage Lockout Threshold
mV50Undervoltage Lockout Hysteresis
UNITSMIN TYP MAXPARAMETER
T
R
= +60°C to +100°C
T
R
= -55°C to +125°C
-3 3
°C
-5 5
Temperature Error, Remote Diode
(Notes 3 and 4)
Including long-term drift
-2.5 2.5
°C
-3.5 3.5
Temperature Error, Local Diode
(Notes 2 and 3)
0.25 conv/sec
2.0 conv/sec
T
A
= +60°C to +100°C
T
A
= 0°C to +85°C
High level
Low level
ADC AND POWER SUPPLY
SMBus static
Hardware or software standby, SMB-
CLK at 10kHz
3
Remote/Local Temperature Sensor
with SMBus Serial Interface
MAX1617
Maxim Integrated
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +3.3V, T
A
= 0°C to +85°C, unless otherwise noted.) (Note 1)
STBY, SMBCLK, SMBDATA; V
CC
= 3V to 5.5V
t
HIGH
, 90% to 90% points
t
LOW
, 10% to 10% points
(Note 5)
SMBCLK, SMBDATA
Logic inputs forced to V
CC
or GND
ALERT forced to 5.5V
STBY, SMBCLK, SMBDATA; V
CC
= 3V to 5.5V
ALERT, SMBDATA forced to 0.4V
CONDITIONS
µs4SMBCLK Clock High Time
µs4.7SMBCLK Clock Low Time
kHzDC 100SMBus Clock Frequency
pF5SMBus Input Capacitance
µA-1 1Logic Input Current
µA1
ALERT Output High Leakage
Current
V2.2Logic Input High Voltage
V0.8Logic Input Low Voltage
mA6Logic Output Low Sink Current
UNITSMIN TYP MAXPARAMETER
t
SU:DAT
, 10% or 90% of SMBDATA to 10% of SMBCLK
t
SU:STO
, 90% of SMBCLK to 10% of SMBDATA
t
HD:STA
, 10% of SMBDATA to 90% of SMBCLK
t
SU:STA
, 90% to 90% points
ns800
SMBus Data Valid to SMBCLK
Rising-Edge Time
µs4SMBus Stop-Condition Setup Time
µs4SMBus Start-Condition Hold Time
ns500
SMBus Repeated Start-Condition
Setup Time
µs4.7SMBus Start-Condition Setup Time
t
HD:DAT
(Note 6) µs0SMBus Data-Hold Time
Master clocking in data µs1
SMBCLK Falling Edge to SMBus
Data-Valid Time
SMBus INTERFACE
ELECTRICAL CHARACTERISTICS
(V
CC
= +3.3V, T
A
= -55°C to +125°C, unless otherwise noted.) (Note 1)
CONDITIONS
Monotonicity guaranteed
T
A
= +60°C to +100°C
Bits8Temperature Resolution (Note 1)
-2 2
T
R
= +60°C to +100°C
T
A
= -55°C to +125°C
°C
-3 3
Initial Temperature Error,
Local Diode (Note 3)
V3.0 5.5Supply-Voltage Range
From stop bit to conversion complete (both channels)
Auto-convert mode
ms94 125 156Conversion Time
%-25 25Conversion Rate Timing Error
-3 3
T
R
= -55°C to +125°C
°C
UNITSMIN TYP MAX
-5 5
PARAMETER
Temperature Error, Remote Diode
(Notes 3 and 4)
ADC AND POWER SUPPLY
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20

MAX1617AMEE

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SENSOR DIGITAL -55C-125C 16QSOP
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