MAX1617MEE+ Maxim Integrated Products, MAX1617MEE+ Datasheet

IC TEMP SENSOR SMBUS SRL 16-QSOP

MAX1617MEE+

Manufacturer Part Number
MAX1617MEE+
Description
IC TEMP SENSOR SMBUS SRL 16-QSOP
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of MAX1617MEE+

Function
Thermometer, Thermostat
Topology
ADC, Comparator, Multiplexer, Register Bank
Sensor Type
External & Internal
Sensing Temperature
-55°C ~ 125°C, External Sensor
Output Type
I²C™/SMBus™
Output Alarm
Yes
Output Fan
No
Voltage - Supply
3 V ~ 5.5 V
Operating Temperature
-55°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
16-QSOP
Full Temp Accuracy
+/- 3.5 C, +/- 5 C
Digital Output - Bus Interface
Serial (2-Wire)
Digital Output - Number Of Bits
7 bit + Sign
Maximum Operating Temperature
+ 125 C
Minimum Operating Temperature
- 55 C
Ic Output Type
Digital
Sensing Accuracy Range
± 2.5°C
Temperature Sensing Range
-55°C To +125°C
Supply Current
120µA
Supply Voltage Range
3V To 5.5V
Resolution (bits)
8bit
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
________________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
format 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
___________________Pin Configuration
19-1265; Rev 1; 3/98
SMBus is a trademark of Intel Corp.
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 408-737-7600 ext. 3468.
Desktop and Notebook
Computers
Smart Battery Packs
LAN Servers
Industrial Controls
TOP VIEW
ADD1
DXN
GND
GND
N.C.
DXP
N.C.
V
CC
________________________________________________________________ Maxim Integrated Products
1
2
3
4
5
6
8
7
MAX1617
QSOP
Central Office
Telecom Equipment
Test and Measurement
Multi-Chip Modules
Remote/Local Temperature Sensor
16
15
14
13
12
11
10
9
N.C.
STBY
SMBCLK
N.C.
SMBDATA
ALERT
ADD0
N.C.
with SMBus Serial Interface
♦ Two Channels: Measures Both Remote and Local
♦ No Calibration Required
♦ SMBus 2-Wire Serial Interface
♦ Programmable Under/Overtemperature Alarms
♦ Supports SMBus Alert Response
♦ Accuracy:
♦ 3µA (typ) Standby Supply Current
♦ 70µA (max) Supply Current in Auto-Convert Mode
♦ +3V to +5.5V Supply Range
♦ Small, 16-Pin QSOP Package
____________________________Features
_______________Ordering Information
__________Typical Operating Circuit
MAX1617MEE
Temperatures
2N3904
±2°C (+60°C to +100°C, local)
±3°C (-40°C to +125°C, local)
±3°C (+60°C to +100°C, remote)
PART
2200pF
0.1µF
-55°C to +125°C
TEMP. RANGE
DXP
DXN
ADD0 ADD1
V
MAX1617
CC
SMBDATA
SMBCLK
STBY
GND
ALERT
200Ω
3V TO 5.5V
16 QSOP
PIN-PACKAGE
10k EACH
INTERRUPT
TO µC
CLOCK
DATA
1

Related parts for MAX1617MEE+

MAX1617MEE+ Summary of contents

Page 1

... GND 8 QSOP SMBus is a trademark of Intel Corp. ________________________________________________________________ Maxim Integrated Products For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800. For small orders, phone 408-737-7600 ext. 3468. with SMBus Serial Interface ____________________________Features ♦ Two Channels: Measures Both Remote and Local Temperatures ♦ ...

Page 2

Remote/Local Temperature Sensor with SMBus Serial Interface ABSOLUTE MAXIMUM RATINGS V to GND ..............................................................-0.3V to +6V CC DXP, ADD_ to GND ....................................-0. DXN to GND ..........................................................-0.3V to +0.8V ALERT, STBY to GND ...........-0.3V to +6V SMBCLK, SMBDATA, SMBDATA, ...

Page 3

Remote/Local Temperature Sensor ELECTRICAL CHARACTERISTICS (continued +3.3V 0°C to +85°C, unless otherwise noted PARAMETER SMBus INTERFACE Logic Input High Voltage Logic Input Low Voltage Logic Output Low Sink Current ALERT Output High Leakage Current ...

Page 4

Remote/Local Temperature Sensor with SMBus Serial Interface ELECTRICAL CHARACTERISTICS (continued +3.3V -55°C to +125°C, unless otherwise noted.) (Note PARAMETER SMBus INTERFACE STBY, SMBCLK, SMBDATA Logic Input High Voltage STBY, SMBCLK, SMBDATA; V Logic ...

Page 5

Remote/Local Temperature Sensor ____________________________Typical Operating Characteristics (continued +25°C, unless otherwise noted.) A TEMPERATURE ERROR vs. COMMON-MODE NOISE FREQUENCY SQUARE WAVE IN AC COUPLED TO DXN V = 100mVp 50mVp ...

Page 6

Remote/Local Temperature Sensor with SMBus Serial Interface ______________________________________________________________Pin Description PIN NAME N.C. No Connection. Not internally connected. May be used for PC board trace routing. 13, 16 Supply Voltage Input 5.5V. Bypass to GND with ...

Page 7

Remote/Local Temperature Sensor Figure 1. Functional Diagram _______________________________________________________________________________________ with SMBus Serial Interface 7 ...

Page 8

Remote/Local Temperature Sensor with SMBus Serial Interface A/D Conversion Sequence If a Start command is written (or generated automatical the free-running auto-convert mode), both chan- nels are converted, and the results of both measurements are available after the ...

Page 9

Remote/Local Temperature Sensor 1) Place the MAX1617 as close as practical to the remote diode noisy environment, such as a computer motherboard, this distance can in. (typical) or more as long as the ...

Page 10

Remote/Local Temperature Sensor with SMBus Serial Interface the MAX1617 can be forced to perform A/D conversions via the one-shot command, despite the RUN/STOP bit being high. Activate hardware standby mode by forcing the STBY pin low notebook computer, ...

Page 11

Remote/Local Temperature Sensor Table 2. Data Format (Twos-Complement) ROUNDED DIGITAL OUTPUT TEMP. TEMP. (°C) (°C) SIGN +130.00 +127 0 +127.00 +127 0 +126.50 +127 0 +126.00 +126 0 +25.25 +25 0 +0. +0. +0. ...

Page 12

Remote/Local Temperature Sensor with SMBus Serial Interface Table 4. Command-Byte Bit Assignments REGISTER COMMAND RLTS 00h RRTE 01h RSL 02h RCL 03h RCRA 04h RLHN 05h RLLI 06h RRHI 07h RRLS 08h WCA 09h WCRW 0Ah WLHO 0Bh WLLM 0Ch ...

Page 13

Remote/Local Temperature Sensor Table 5. Configuration-Byte Bit Assignments POR BIT NAME STATE Masks all ALERT inter- 7 (MSB) MASK 0 rupts when high. Standby mode control bit. If high, the device immediately stops con- RUN verting and enters ...

Page 14

Remote/Local Temperature Sensor with SMBus Serial Interface Table 8. RLTS and RRTE Temp Register Update Timing Chart OPERATING MODE CONVERSION INITIATED BY: Auto-Convert Power-on reset 1-shot command, while idling Auto-Convert between automatic conversions 1-shot command that occurs Auto-Convert during a ...

Page 15

Remote/Local Temperature Sensor LOW HIGH SMBCLK SMBDATA t t HD:STA SU:STA A = START CONDITION B = MSB OF ADDRESS CLOCKED INTO SLAVE C = LSB OF ADDRESS CLOCKED INTO SLAVE D = R/W BIT CLOCKED ...

Page 16

Remote/Local Temperature Sensor with SMBus Serial Interface Listing 1. Pseudocode Example 16 ______________________________________________________________________________________ ...

Page 17

Remote/Local Temperature Sensor Listing 1. Pseudocode Example (continued) ______________________________________________________________________________________ with SMBus Serial Interface 17 ...

Page 18

Remote/Local Temperature Sensor with SMBus Serial Interface Listing 1. Pseudocode Example (continued) 18 ______________________________________________________________________________________ ...

Page 19

Remote/Local Temperature Sensor ________________________________________________________Package Information ______________________________________________________________________________________ with SMBus Serial Interface 19 ...

Page 20

Remote/Local Temperature Sensor with SMBus Serial Interface 20 ______________________________________________________________________________________ NOTES ...

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