MAX6696AEE+ Maxim Integrated Products, MAX6696AEE+ Datasheet

IC SENSOR TEMP SMBUS 16-QSOP

MAX6696AEE+

Manufacturer Part Number
MAX6696AEE+
Description
IC SENSOR TEMP SMBUS 16-QSOP
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of MAX6696AEE+

Function
Temp Monitoring System (Sensor)
Topology
ADC, Multiplexer, Register Bank
Sensor Type
External & Internal
Sensing Temperature
-40°C ~ 125°C, External Sensor
Output Type
I²C™/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
16-QSOP
Full Temp Accuracy
+/- 3 C
Digital Output - Bus Interface
Serial (2-Wire)
Digital Output - Number Of Bits
10 bit + Sign
Maximum Operating Temperature
+ 125 C
Minimum Operating Temperature
- 40 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
SMBus is a trademark of Intel Corp.
*P,
Is
ae
cm
c.
The MAX6695/MAX6696 are precise, dual-remote, and
local digital temperature sensors. They accurately mea-
sure the temperature of their own die and two remote
diode-connected transistors, and report the tempera-
ture in digital form on a 2-wire serial interface. The
remote diode is typically the emitter-base junction of a
common-collector PNP on a CPU, FPGA, GPU, or ASIC.
The 2-wire serial interface accepts standard system
management bus (SMBus™) commands such as Write
Byte, Read Byte, Send Byte, and Receive Byte to read
the temperature data and program the alarm thresholds
and conversion rate. The MAX6695/MAX6696 can func-
tion autonomously with a programmable conversion
rate, which allows control of supply current and temper-
ature update rate to match system needs. For conver-
sion rates of 2Hz or less, the temperature is
represented as 10 bits + sign with a resolution of
+0.125°C. When the conversion rate is 4Hz, output data
is 7 bits + sign with a resolution of +1°C. The MAX6695/
MAX6696 also include an SMBus timeout feature to
enhance system reliability.
Remote temperature sensing accuracy is ±1.5°C be-
tween +60°C and +100°C with no calibration needed.
The MAX6695/MAX6696 measure temperatures from
-40°C to +125°C. In addition to the SMBus ALERT out-
put, the MAX6695/MAX6696 feature two overtempera-
ture limit indicators (OT1 and OT2), which are active
only while the temperature is above the corresponding
programmable temperature limits. The OT1 and OT2
outputs are typically used for fan control, clock throt-
tling, or system shutdown.
The MAX6695 has a fixed SMBus address. The
MAX6696 has nine different pin-selectable SMBus
addresses. The MAX6695 is available in a 10-pin
µMAX
package. Both operate throughout the -40°C to +125°C
temperature range.
19-3183; Rev 2; 11/05
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Dual Remote/Local Temperature Sensors with
®
Notebook Computers
Desktop Computers
Servers
Workstations
Test and Measurement Equipment
and the MAX6696 is available in a 16-pin QSOP
________________________________________________________________ Maxim Integrated Products
General Description
Applications
SMBus Serial Interface
o Measure One Local and Two Remote
o 11-Bit, +0.125°C Resolution
o High Accuracy ±1.5°C (max) from +60°C to +100°C
o ACPI Compliant
o Programmable Under/Overtemperature Alarms
o Programmable Conversion Rate
o Three Alarm Outputs: ALERT, OT1, and OT2
o SMBus/I
o Compatible with 65nm Process Technology
Pin Configurations appear at end of data sheet.
µMAX is a registered trademark of Maxim Integrated Products, Inc.
MAX6695AUB
MAX6695YAUB
MAX6696AEE
MAX6696YAEE
PROCESSOR
Temperatures
(Remote)
(Y Versions)
Typical Operating Circuits continued at end of data sheet.
GRAPHICS
CPU
PART
2
C-Compatible Interface
Typical Operating Circuit
0.1µF
DXP1
DXP2
DXN
-40 C to +125 C
-40 C to +125 C
-40 C to +125 C
-40 C to +125 C
TEMP RANGE
MAX6695
Ordering Information
V
CC
GND
47Ω
SMBDATA
SMBCLK
ALERT
OT1
OT2
+3.3V
PIN-
PACKAGE
10 µMAX
10 µMAX
16 QSOP
16 QSOP
Features
10kΩ
EACH
TO CLOCK
THROTTLING
DATA
CLOCK
INTERRUPT
TO µP
TO SYSTEM
SHUTDOWN
U10C-4
U10C-4
CODE
E16-1
E16-1
PKG
1

Related parts for MAX6696AEE+

MAX6696AEE+ Summary of contents

Page 1

... MAX6695AUB MAX6695YAUB MAX6696AEE MAX6696YAEE CPU Applications GRAPHICS PROCESSOR Typical Operating Circuits continued at end of data sheet. Pin Configurations appear at end of data sheet. µMAX is a registered trademark of Maxim Integrated Products, Inc. Features 2 C-Compatible Interface Ordering Information PIN- TEMP RANGE PACKAGE 10 µMAX - +125 C 10 µMAX ...

Page 2

Dual Remote/Local Temperature Sensors with SMBus Serial Interface ABSOLUTE MAXIMUM RATINGS V ...........................................................................-0.3V to +6V CC DXP1, DXP2................................................-0. DXN ......................................................................-0.3V to +0.8V SMBCLK, SMBDATA, ALERT ...................................-0.3V to +6V RESET, STBY, ADD0, ADD1, OT1, OT2 ...................-0.3V to +6V SMBDATA ...

Page 3

Dual Remote/Local Temperature Sensors with ELECTRICAL CHARACTERISTICS (continued +3.0V to +3.6V 0°C to +125°C, unless otherwise noted. Typical values are PARAMETER SYMBOL ALERT, OT1, OT2 Output Low Sink Current Output High Leakage ...

Page 4

Dual Remote/Local Temperature Sensors with SMBus Serial Interface (V = 3.3V +25°C, unless otherwise noted STANDBY SUPPLY CURRENT vs. SUPPLY VOLTAGE 3.0 3.1 3.2 3.3 3.4 3.5 3.6 SUPPLY ...

Page 5

Dual Remote/Local Temperature Sensors with PIN NAME MAX6695 MAX6696 DXP1 3 4 DXN 4 5 DXP2 OT1 GND 7 9 SMBCLK ALERT SMBDATA OT2 10 13 ...

Page 6

Dual Remote/Local Temperature Sensors with SMBus Serial Interface Detailed Description The MAX6695/MAX6696 are temperature sensors designed to work in conjunction with a microprocessor or other intelligence in temperature monitoring, protec- tion, or control applications. Communication with the MAX6695/MAX6696 occurs through ...

Page 7

Dual Remote/Local Temperature Sensors with V CC RESET/ UVLO CIRCUITRY DXP1 DXN DXP2 ALERT OT1 OT2 Figure 1. MAX6695/MAX6696 Functional Diagram and 100µA, the change in the measured voltage due to series resistance is 100 ...

Page 8

Dual Remote/Local Temperature Sensors with SMBus Serial Interface In this example, the effect of the series resistance and the ideality factor partially cancel each other. Discrete Remote Diodes When the remote-sensing diode is a discrete transistor, its collector and base ...

Page 9

Dual Remote/Local Temperature Sensors with Write Byte Format S ADDRESS WR 7 bits Slave Address: equiva- lent to chip-select line of a 3-wire interface Read Byte Format ADDRESS WR ACK 7 bits Slave Address: equiva- lent to chip-select line Send ...

Page 10

Dual Remote/Local Temperature Sensors with SMBus Serial Interface extended temperature register (11h) (Table 3), which extends the temperature data to 10 bits + sign and the resolution to +0.125°C per LSB (Table 4). When a conversion is complete, the main ...

Page 11

Dual Remote/Local Temperature Sensors with Table 5. Command-Byte Register Bit Assignments REGISTER ADDRESS POR STATE 0000 0000 RLTS 00 h (0°C) 0000 0000 RRTE 01 h (0°C) RSL1 02 h 1000 0000 RCL 03 h 0000 0000 RCRA 04 h ...

Page 12

Dual Remote/Local Temperature Sensors with SMBus Serial Interface Table 5. Command-Byte Register Bit Assignments (continued) REGISTER ADDRESS POR STATE 0000 1010 HYST 21 h (10°C) RDID The POR state of both internal and external ALERT low- ...

Page 13

Dual Remote/Local Temperature Sensors with Table 6. Configuration Byte Functions BIT NAME 7(MSB) MASK1 RUN/STOP 6 5 Fault Queue 4 RFU 3 Remote 2 Select 2 SMB Timeout Disable MASK Alert Channel 2 1 MASK Alert Channel 1 0 begun, ...

Page 14

Dual Remote/Local Temperature Sensors with SMBus Serial Interface Table 7. Status Register 1 Bit Assignments BIT NAME POR 7(MSB) BUSY 1 A/D is busy converting when 1. When 1, internal high-temperature ALERT has tripped, cleared by POR or by reading ...

Page 15

Dual Remote/Local Temperature Sensors with Table 9. Conversion-Rate Control Register (POR = 0110) BIT 3 BIT 1 BIT0 HEX 00h 01h 02h 03h 04h 1 ...

Page 16

Dual Remote/Local Temperature Sensors with SMBus Serial Interface LOW HIGH SMBCLK SMBDATA SU:STA HD:STA A = START CONDITION B = MSB OF ADDRESS CLOCKED INTO SLAVE C = LSB OF ADDRESS CLOCKED INTO ...

Page 17

Dual Remote/Local Temperature Sensors with GND 10 mils DXP 10 mils DXN GND Figure 5. Recommended DXP-DXN PC Traces Leakage currents from PC board contamination must be dealt with carefully since a 20M path from DXP to ground causes about ...

Page 18

Dual Remote/Local Temperature Sensors with SMBus Serial Interface TOP VIEW DXP1 2 DXN 3 DXP2 4 OT1 5 18 ______________________________________________________________________________________ N. DXP1 3 10 OT2 MAX6696 DXN 4 9 SMBDATA DXP2 5 MAX6695 ...

Page 19

Dual Remote/Local Temperature Sensors with (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 fl 0.50–0.1 0.6–0.1 1 0.6–0.1 TOP VIEW ...

Page 20

... 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. 20 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2005 Maxim Integrated Products ...

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