MAX6693UP9A+ Maxim Integrated Products, MAX6693UP9A+ Datasheet

IC TEMP MONITOR 7CH 20-TSSOP

MAX6693UP9A+

Manufacturer Part Number
MAX6693UP9A+
Description
IC TEMP MONITOR 7CH 20-TSSOP
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX6693UP9A.pdf (19 pages)

Specifications of MAX6693UP9A+

Function
Temp Monitoring System (Sensor)
Topology
ADC, Buffer, Multiplexer, Register Bank
Sensor Type
External & Internal
Sensing Temperature
-40°C ~ 125°C, External Sensor
Output Type
SMBus™
Output Alarm
Yes
Output Fan
Yes
Voltage - Supply
3 V ~ 3.6 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
20-TSSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX6693 precision multichannel temperature sen-
sor monitors its own temperature and the temperatures
of up to six external diode-connected transistors. All
temperature channels have programmable alert thresh-
olds. Channels 1, 4, 5, and 6 also have programmable
overtemperature thresholds. When the measured tem-
perature of a channel exceeds the respective thresh-
old, a status bit is set in one of the status registers. Two
open-drain outputs, OVERT and ALERT, assert corre-
sponding to these bits in the status register.
The 2-wire serial interface supports the standard system
management bus (SMBus™) protocols: write byte, read
byte, send byte, and receive byte for reading the tem-
perature data and programming the alarm thresholds.
The MAX6693 is specified for an operating temperature
range of -40°C to +125°C and is available in a 20-pin
TSSOP package.
19-4096; Rev 0; 5/08
SMBus is a trademark of Intel Corp.
Pin Configuration appears at end of data sheet.
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.
Desktop Computers
Notebook Computers
Workstations
Servers
7-Channel Precision Temperature Monitor
________________________________________________________________ Maxim Integrated Products
General Description
CPU
Applications
100pF
100pF
100pF
100pF
100pF
10
1
2
3
4
5
6
7
8
9
DXP1
DXN1
DXP2
DXN2
DXP3
DXN3
DXP4
DXN4
DXP5
DXN5
MAX6693
with Beta Compensation
SMBDATA
SMBCLK
OVERT
ALERT
o Six Thermal-Diode Inputs
o Beta Compensation (Channel 1)
o Local Temperature Sensor
o 1.5°C Remote Temperature Accuracy (+60°C to
o Temperature Monitoring Begins at POR for Fail-
o ALERT and OVERT Outputs for Interrupts,
o STBY Input for Hardware Standby Mode
o Small, 20-Pin TSSOP Package
o 2-Wire SMBus Interface
DXN6
STBY
DXP6
+ Denotes a lead-free package.
Note: Slave address is 1001 101.
GND
MAX6693UP9A+
N.C.
V
CC
+100°C)
Safe System Protection
Throttling, and Shutdown
20
19
18
17
16
15
14
13
12
11
PART
Typical Application Circuit
100pF
+3.3V
0.1μF
-40°C to +125°C
TEMP RANGE
Ordering Information
GPU
4.7kΩ
EACH
CLK
DATA
INTERRUPT
TO μP
TO SYSTEM
SHUTDOWN
PIN-PACKAGE
20 TSSOP
Features
1

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MAX6693UP9A+ Summary of contents

Page 1

... Temperature Monitoring Begins at POR for Fail- Safe System Protection o ALERT and OVERT Outputs for Interrupts, Throttling, and Shutdown o STBY Input for Hardware Standby Mode o Small, 20-Pin TSSOP Package o 2-Wire SMBus Interface PART Applications MAX6693UP9A+ + Denotes a lead-free package. Note: Slave address is 1001 101 DXP1 GND 100pF 2 ...

Page 2

Precision Temperature Monitor with Beta Compensation ABSOLUTE MAXIMUM RATINGS , SMBCLK, SMBDATA, ALERT, OVERT STBY to GND ....................................................-0.3V to +6.0V DXP_ to GND..............................................-0. DXN_ to GND ........................................................-0.3V to +0.8V SMBDATA, ALERT, OVERT Current....................-1mA to +50mA ...

Page 3

Precision Temperature Monitor ELECTRICAL CHARACTERISTICS (continued +3.0V to +3.6V STBY CC CC +25°C.) (Note 2) PARAMETER SYMBOL Remote-Diode Source Current Undervoltage-Lockout Threshold UVLO Undervoltage-Lockout Hysteresis Power-On Reset (POR) Threshold POR Threshold Hysteresis ...

Page 4

Precision Temperature Monitor with Beta Compensation ELECTRICAL CHARACTERISTICS (continued +3.0V to +3.6V STBY CC CC +25°C.) (Note 2) PARAMETER SYMBOL Clock-Low Period Clock-High Period Data Hold Time t HD:DAT Data Setup Time ...

Page 5

Precision Temperature Monitor (V = 3.3V +25°C, unless otherwise noted.) STBY SOFTWARE STANDBY SUPPLY CURRENT vs. SUPPLY VOLTAGE 3.8 3.7 3.6 3.5 3.4 3.3 3.2 3.1 3.0 3.0 3.1 3.2 ...

Page 6

Precision Temperature Monitor with Beta Compensation (V = 3.3V +25°C, unless otherwise noted.) STBY REMOTE-DIODE TEMPERATURE ERROR vs. CAPACITANCE ...

Page 7

Precision Temperature Monitor PIN NAME Combined Current Source and A/D Positive Input for Channel 5 Remote Diode. Connect to the anode 9 DXP5 of a remote-diode-connected temperature-sensing transistor. Leave unconnected or connect remote diode is ...

Page 8

Precision Temperature Monitor with Beta Compensation DXP1 DXN1 DXP2 DXN2 DXP3 CURRENT SOURCES, BETA COMPEN- DXN3 SATION AND MUX DXP4 DXN4 DXP5 DXN5 DXP6 DXN6 Figure 1. Internal Block Diagram Operating-Current Calculation The MAX6693 operates at different operating-current levels ...

Page 9

Precision Temperature Monitor WRITE BYTE FORMAT S ADDRESS WR 7 BITS SLAVE ADDRESS: EQUIVA- LENT TO CHIP-SELECT LINE OF A 3-WIRE INTERFACE READ BYTE FORMAT S ADDRESS WR ACK 7 BITS SLAVE ADDRESS: EQUIVA- COMMAND BYTE: SELECTS LENT TO ...

Page 10

Precision Temperature Monitor with Beta Compensation LOW HIGH SMBCLK SMBDATA t t HD:STA SU:STA A = START CONDITION MSB OF ADDRESS CLOCKED INTO SLAVE LSB OF ADDRESS CLOCKED INTO SLAVE. D ...

Page 11

Precision Temperature Monitor ALERT Response Address The SMBus alert response interrupt pointer provides quick fault identification for simple slave devices that lack the complex logic needed bus master. Upon receiving an interrupt signal, the host master ...

Page 12

Precision Temperature Monitor with Beta Compensation Table 3. Command Byte Register Bit Assignment ADDRESS REGISTER (HEX) Local 07 Remote 1 01 Remote 2 02 Remote 3 03 Remote 4 04 Remote 5 05 Remote 6 06 Configuration 1 41 ...

Page 13

Precision Temperature Monitor Table 4. Configuration 1 Register BIT NAME 7 (MSB) STOP 6 POR TIMEOUT 5 4 RESERVED Resistance 3 cancellation 2 Beta compensation 1 Reserved 0 Reserved Table 5. Configuration 2 Register BIT NAME 7 (MSB) Reserved ...

Page 14

Precision Temperature Monitor with Beta Compensation Table 6. Configuration 3 Register BIT NAME 7 (MSB) Reserved 6 Reserved 5 Mask OVERT 6 4 Mask OVERT 5 3 Mask OVERT 4 2 Reserved 1 Reserved 0 Mask OVERT 1 ⎛ ...

Page 15

Precision Temperature Monitor Table 7. Status 1 Register BIT NAME 7 (MSB) Reserved 6 Local ALERT 5 Remote 6 ALERT 4 Remote 5 ALERT 3 Remote 4 ALERT 2 Remote 3 ALERT 1 Remote 2 ALERT 0 Remote 1 ...

Page 16

Precision Temperature Monitor with Beta Compensation Table 8. Status 2 Register BIT NAME 7 (MSB) Reserved 6 Reserved 5 Remote 6 OVERT 4 Remote 5 OVERT 3 Remote 4 OVERT 2 Reserved 1 Reserved 0 Remote 1 OVERT Table ...

Page 17

Precision Temperature Monitor effect; the measured temperature of the junction tracks the actual temperature within a conversion cycle. When measuring temperature with discrete remote tran- sistors, the best thermal response times are obtained with transistors in small packages (i.e., ...

Page 18

Precision Temperature Monitor with Beta Compensation Twisted-Pair and Shielded Cables Use a twisted-pair cable to connect the remote sensor for remote-sensor distances longer than 8in or in very noisy environments. Twisted-pair cable lengths can be between 6ft and 12ft ...

Page 19

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 19 © 2008 Maxim Integrated Products ...

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