MAX6627MKA-T Maxim Integrated Products, MAX6627MKA-T Datasheet

IC, TEMP SENSOR, 12BIT, ± 1°C, 8-SOT-23

MAX6627MKA-T

Manufacturer Part Number
MAX6627MKA-T
Description
IC, TEMP SENSOR, 12BIT, ± 1°C, 8-SOT-23
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of MAX6627MKA-T

Ic Output Type
Digital
Sensing Accuracy Range
± 1°C
Supply Current
200µA
Supply Voltage Range
3V To 5.5V
Resolution (bits)
12bit
Sensor Case Style
SOT-23
No. Of Pins
8
Full Temp Accuracy
+/- 0.5 C
Package / Case
SOT-23
Digital Output - Bus Interface
Serial (3-Wire, SPI)
Digital Output - Number Of Bits
12 bit + Sign
Maximum Operating Temperature
+ 125 C
Minimum Operating Temperature
- 55 C
Output Type
Digital
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
The MAX6627/MAX6628 precise digital temperature
sensors report the temperature of a remote sensor. The
remote sensor is a diode-connected transistor, typically
a low-cost, easily mounted 2N3904 NPN type that
replaces conventional thermistors or thermocouples.
The MAX6627/MAX6628 can also measure the die tem-
perature of other ICs, such as microprocessors (µPs) or
microcontrollers (µCs) that contain an on-chip, diode-
connected transistor.
Remote accuracy is ±1°C when the temperature of the
remote diode is between 0°C and +125°C and the tem-
perature of the MAX6627/MAX6628 is +30°C. The tem-
perature is converted to a 12-bit + sign word with
0.0625°C resolution. The architecture of the device is
capable of interpreting data as high as +145°C from
the remote sensor. The MAX6627/MAX6628 tempera-
ture should never exceed +125°C.
These sensors are 3-wire serial interface SPI™ compat-
ible, allowing the MAX6627/MAX6628 to be readily con-
nected to a variety of µCs. The MAX6627/MAX6628 are
read-only devices, simplifying their use in systems
where only temperature data is required.
Two conversion rates are available, one that continu-
ously converts data every 0.5s (MAX6627), and one
that converts data every 8s (MAX6628). The slower ver-
sion provides minimal power consumption under all
operating conditions (30µA, typ). Either device can be
read at any time and provide the data from the last con-
version.
Both devices operate with supply voltages between
+3.0V and +5.5V, are specified between -55°C and
+125°C, and come in space-saving 8-pin SOT23 and
lead-free TDFN packages.
19-2032; Rev 4; 8/08
SPI is a trademark of Motorola, Inc.
Pin Configurations 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.
Sensors with SPI-Compatible Serial Interface
Hard Disk Drive
Smart Battery Packs
Automotive
Industrial Control Systems
Notebooks, PCs
Remote ±1°C Accurate Digital Temperature
________________________________________________________________ Maxim Integrated Products
General Description
Applications
o Accuracy
o 12-Bit + Sign, 0.0625°C Resolution
o Low Power Consumption
o Operating Temperature Range (-55°C to +125°C)
o Measurement Temperature Range, Remote
o 0.5s (MAX6627) or 8s (MAX6628) Conversion Rate
o SPI-Compatible Interface
o +3.0V to +5.5V Supply Range
o 8-Pin SOT23 and TDFN Packages
o Lead-Free Version Available (TDFN Package)
Note: All devices are specified over the -55°C to +125°C oper-
ating temperature range.
# Denotes an RoHS-compliant package.
T = Tape and reel.
+ Denotes a lead-free/RoHS-compliant package.
* EP = Exposed pad.
MAX6627MKA#T
MAX6627MTA+T
MAX6628MKA#T
MAX6628MTA+T
Junction (-55°C to +145°C)
±1°C (max) from 0°C ≤ T
±2.4°C (max) from -55°C ≤ T
0°C ≤ T
30µA (typ) (MAX6628)
200µA (typ) (MAX6627)
2200pF
PART
A
≤ +70°C
+ 3V TO + 5.5V
Typical Operating Circuit
DXP
DXN
V
CC
MAX6627
MAX6628
Ordering Information
0.1μF
PIN-PACKAGE
8 SOT23
8 TDFN-EP*
8 SOT23
8 TDFN-EP*
GND
SDO
SCK
RJ
CS
≤ +125°C, T
RJ
≤ +100°C,
Features
TOP MARK
μC
A
AAEQ
+AUU
+AUT
AAER
= +30°C
1

Related parts for MAX6627MKA-T

MAX6627MKA-T Summary of contents

Page 1

... Conversion Rate o SPI-Compatible Interface o +3.0V to +5.5V Supply Range o 8-Pin SOT23 and TDFN Packages o Lead-Free Version Available (TDFN Package) PART MAX6627MKA#T MAX6627MTA+T MAX6628MKA#T MAX6628MTA+T Note: All devices are specified over the -55°C to +125°C oper- ating temperature range. # Denotes an RoHS-compliant package. ...

Page 2

... SOT23 (derate 9.7mW/°C above +70°C)............777mW + 0.3V 8-Pin TDFN (derate 18.5mW/°C above +70°C) ......1481.5mW CC Operating Temperature Range .........................-55°C to +125°C Junction Temperature ......................................................+150°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10s) .................................+300°C CONDITIONS 0°C ≤ T ≤ +125° +30°C, ...

Page 3

... TIMING CHARACTERISTICS (Note 2, Figure 2) Serial-Clock Frequency f SCK Pulse Width High SCK Pulse Width Low CS Fall to SCK Rise t CS Fall to Output Enable CS Rise to Output Disable SCK Fall to Output Data Valid Note the temperature of the remote junction. RJ Note 2: Serial timing characteristics guaranteed by design. _______________________________________________________________________________________ CONDITIONS ...

Page 4

... Remote ±1°C Accurate Digital Temperature Sensors with SPI-Compatible Serial Interface (V = +3.3V +25°C, unless otherwise noted AVERAGE OPERATING CURRENT vs. SUPPLY VOLTAGE 300 250 200 MAX6627 150 100 MAX6628 50 0 3.0 3.5 4.0 4.5 5.0 5.5 SUPPLY VOLTAGE (V) TEMPERATURE ERROR vs. POWER-SUPPLY NOISE FREQUENCY ...

Page 5

... Remote ±1°C Accurate Digital Temperature Sensors with SPI-Compatible Serial Interface Detailed Description The MAX6627/MAX6628 remote digital thermometers report the temperature of a remote sensor. The remote sensor is a diode-connected transistor—typically, a low-cost, easily mounted 2N3904 NPN type—that replaces conventional thermistors or thermocouples. ...

Page 6

... XX highest expected temperature. The forward voltage must be less than 0.95V at 100µA at the lowest expect temperature. The base resistance has to be less 0 XX than 100Ω. Tight specification of forward-current gain 0 XX (+50 to +150, for example) indicates that the manufac- ...

Page 7

... Remote ±1°C Accurate Digital Temperature Sensors with SPI-Compatible Serial Interface Filter high-frequency electromagnetic interference (EMI) at DXP and DXN with an external 2200pF capaci- tor connected between the two inputs. This capacitor can be increased to about 3300pF (max), including cable capacitance. A capacitance higher than 3300pF introduces errors due to the rise time of the switched- current source ...

Page 8

... Remote ±1°C Accurate Digital Temperature Sensors with SPI-Compatible Serial Interface DXP DXN TOP VIEW GND 1 DXN 2 MAX6627 MAX6628 DXP SOT23 Chip Information PROCESS: BiCMOS 8 _______________________________________________________________________________________ V CC 12-BIT + SIGN INTERFACE ADC 8 N.C. 7 SDO SCK For the latest package outline information and land patterns www ...

Page 9

... 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 _____________________ 9 © 2008 Maxim Integrated Products DESCRIPTION is a registered trademark of Maxim Integrated Products, Inc ...

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