MAX6699UE99+ Maxim Integrated Products, MAX6699UE99+ Datasheet

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MAX6699UE99+

Manufacturer Part Number
MAX6699UE99+
Description
Board Mount Temperature Sensors 5Ch Precision Temperature Monitor
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of MAX6699UE99+

Full Temp Accuracy
+/- 3 C
Package / Case
TSSOP-16
Digital Output - Bus Interface
Serial (2-Wire)
Digital Output - Number Of Bits
11 bit
Maximum Operating Temperature
+ 125 C
Minimum Operating Temperature
- 40 C
Output Type
Digital
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
The MAX6699 precision multichannel temperature sen-
sor monitors its own temperature and the temperatures
of up to four external diode-connected transistors.
All temperature channels have programmable alert
thresholds. Channels 1 and 4 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 MAX6699 is specified for an operating temperature
range of -40°C to +125°C and is available in 16-pin
QSOP and 16-pin TSSOP packages.
19-3859; Rev 2; 7/07
SMBus is a trademark of Intel Corp.
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
5-Channel Precision Temperature Monitor
________________________________________________________________ Maxim Integrated Products
CPU
General Description
Applications
2200pF
2200pF
2200pF
2200pF
1
2
3
4
5
6
7
8
DXP1
DXN1
DXP2
DXN2
DXP3
DXN3
DXP4
DXN4
MAX6699
♦ Four Thermal-Diode Inputs
♦ Local Temperature Sensor
♦ 1°C Remote Temperature Accuracy (+60°C to +100°C)
♦ Temperature Monitoring Begins at POR for Fail-Safe
♦ ALERT and OVERT Outputs for Interrupts, Throttling,
♦ Small 16-Pin QSOP and 16-Pin TSSOP Packages
♦ 2-Wire SMBus Interface
See the Slave Address section.
Pin Configuration appears at end of data sheet.
SMBDATA
MAX6699EE_ _
MAX6699UE_ _
SMBCLK
System Protection
and Shutdown
OVERT
ALERT
N.C.1
N.C.2
GND
V
PART
CC
16
15
14
13
12
11
10
9
Typical Application Circuit
-40°C to +125°C
-40°C to +125°C
TEMP RANGE
Ordering Information
+3.3V
0.1µF
PIN-
PACKAGE
16 QSOP
16 TSSOP
4.7kΩ
EACH
CLK
DATA
INTERRUPT
TO µP
TO SYSTEM
SHUTDOWN
Features
CODE
U16-1
E16-1
PKG
1

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MAX6699UE99+ Summary of contents

Page 1

... Notebook Computers Workstations Servers SMBus is a trademark of Intel Corp. CPU ________________________________________________________________ Maxim Integrated Products 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. ♦ Four Thermal-Diode Inputs ♦ Local Temperature Sensor ♦ 1°C Remote Temperature Accuracy (+60°C to +100°C) ♦ ...

Page 2

Precision Temperature Monitor ABSOLUTE MAXIMUM RATINGS , SCK, SDA, ALERT, OVERT to GND ................-0. DXP_ to GND..............................................-0. DXN_ to GND ........................................................-0.3V to +0.8V SDA, ALERT, OVERT Current .............................-1mA to +50mA DXN Current .......................................................................±1mA ...

Page 3

Precision Temperature Monitor ELECTRICAL CHARACTERISTICS (continued +3.0V to +5.5V -40°C to +125°C, unless otherwise noted. Typical values are PARAMETER SYMBOL SMBus INTERFACE (SCL, SDA) Logic-Input Low Voltage Logic-Input High Voltage Input ...

Page 4

Precision Temperature Monitor (V = 3.3V +25°C, unless otherwise noted STANDBY SUPPLY CURRENT vs. SUPPLY VOLTAGE 3.8 3.3 4.3 4.8 5.3 SUPPLY ...

Page 5

Precision Temperature Monitor (V = 3.3V +25°C, unless otherwise noted REMOTE TEMPERATURE ERROR vs. COMMON-MODE NOISE FREQUENCY 5 100mV P 0.001 0.01 0.1 FREQUENCY (MHz) ...

Page 6

Precision Temperature Monitor PIN NAME Combined Current Source and A/D Positive Input for Channel 4 Remote Diode. Connect to the anode of a remote-diode-connected temperature-sensing transistor. Leave floating or connect DXP4 remote diode is used. Place ...

Page 7

Precision Temperature Monitor DXP1 DXN1 DXP2 DXN2 DXP3 DXN3 DXP4 DXN4 Figure 1. Internal Block Diagram SMBus Digital Interface From a software perspective, the MAX6699 appears as a series of 8-bit registers that contain temperature-mea- surement data, alarm threshold ...

Page 8

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- lent to chip-select line Send ...

Page 9

Precision Temperature Monitor HIGH LOW SMBCLK SMBDATA SU:STA HD:STA SU:DAT A = START CONDITION B = MSB OF ADDRESS CLOCKED INTO SLAVE C = LSB OF ADDRESS CLOCKED INTO SLAVE D = ...

Page 10

Precision Temperature Monitor Table 3. Command Byte Register Bit Assignment ADDRESS REGISTER (HEX) Local 07 Remote 1 01 Remote 2 02 Remote 3 03 Remote 4 04 Reserved 05 Reserved 06 Configuration 1 41 Configuration 2 42 Configuration 3 ...

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 Table 4. Configuration 1 Register BIT NAME 7(MSB) STOP 6 POR TIMEOUT 5 4 Fast remote 1 Resistance 3 cancellation 2 Reserved 1 Reserved 0 Reserved Table 5. Configuration 2 Register BIT NAME 7(MSB) Reserved 6 ...

Page 13

Precision Temperature Monitor Table 6. Configuration 3 Register BIT NAME 7(MSB) Reserved 6 Reserved 5 Reserved 4 Reserved 3 Mask OVERT 4 2 Reserved 1 Reserved 0 Mask OVERT 1 sensor designed for a nominal ideality factor n is ...

Page 14

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

Page 15

Precision Temperature Monitor Table 8. Status 2 Register BIT NAME 7(MSB) Reserved 6 Reserved 5 Reserved 4 Reserved 3 Remote 4 OVERT 2 Reserved 1 Reserved 0 Remote 1 OVERT Table 9. Status 3 Register BIT NAME 7(MSB) Reserved ...

Page 16

Precision Temperature Monitor ADC Noise Filtering The integrating ADC has good noise rejection for low- frequency signals, such as power-supply hum. In envi- ronments with significant high-frequency EMI, connect an external 2200pF capacitor between DXP_ and DXN_. Larger capacitor ...

Page 17

Precision Temperature Monitor remote sensor. For very long cable runs, the cable’s parasitic capacitance often provides noise filtering, so the 2200pF capacitor can often be removed or reduced in value. Cable resistance also affects remote-sensor accuracy. For every 1Ω ...

Page 18

Precision Temperature Monitor (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) 18 ______________________________________________________________________________________ Package Information PACKAGE OUTLINE, QSOP .150", .025" LEAD PITCH 1 21-0055 ...

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 © 2007 Maxim Integrated Products Package Information (continued) PACKAGE OUTLINE, TSSOP 4 ...

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