MAX6630 MAXIM [Maxim Integrated Products], MAX6630 Datasheet

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MAX6630

Manufacturer Part Number
MAX6630
Description
12-Bit Sign Digital Temperature Sensors with Serial Interface
Manufacturer
MAXIM [Maxim Integrated Products]
Datasheet

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The MAX6629–MAX6632 are local digital temperature
sensors with an SPI™-compatible serial interface. The
temperature is converted to a 12-bit + sign word with a
resolution of 0.0625°C/LSB. An extended temperature
range provides useful readings up to +150°C.
These sensors are 3-wire serial interface SPI compati-
ble, allowing the MAX6629–MAX6632 to be readily con-
nected to a variety of microcontrollers (µCs). The
MAX6629–MAX6632 are read-only devices, simplifying
their use in systems where only temperature data is
required.
All four digital temperature sensors require very little
supply current, making them ideal for portable systems.
The MAX6631/MAX6632 perform a temperature-to-digi-
tal conversion once every 8s and require minimal aver-
age supply current, 32µA (typ). The MAX6629/
MAX6630 perform a conversion once every 0.5s and
require only 200µA (typ) supply current. Any of these
temperature sensors can perform conversions more
often—up to approximately four conversions per sec-
ond by reading the conversion results more often.
19-2047; Rev 1; 7/01
SPI is a trademark of Motorola, Inc.
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.
Cellular
Hard Disk Drive
HVAC
+3V TO +5.5V
0.1µF
Typical Application Circuit
12-Bit + Sign Digital Temperature Sensors
V
GND
________________________________________________________________ Maxim Integrated Products
CC
MAX6629
MAX6630
MAX6631
MAX6632
General Description
SCK
SO
CS
Automotive
Industrial Control
Systems
Applications
µC
o Low Power Consumption
o 12-Bit + Sign Resolution with 0.0625°C/LSB
o Accuracy
o +150°C Extended Temperature Range
o SPI-Compatible Serial Interface
o +3.0V to +5.5V Supply Range
o 6-Pin SOT23 Package
M A X6 6 2 9M U T- T
M A X6 6 3 0M U T- T
M A X6 6 3 1M U T- T
M A X6 6 3 2M U T- T
TOP VIEW
GND
N.C.
V
CC
32µA typ (MAX6631/MAX6632)
200µA typ (MAX6629/MAX6630)
±1°C (max) from 0°C to +70°C
±2.3°C (max) from -20°C to +100°C
±3.2°C (max) from -40°C to +125°C
±6.5°C (max) at +150°C
PART
with Serial Interface
1
2
3
MAX6629
MAX6631
SOT23
-55°C to +150°C
-55°C to +150°C
-55°C to +150°C
-55°C to +150°C
TEMP. RANGE
6
5
4
Ordering Information
SO
CS
SCK
Pin Configurations
GND
N.C.
V
CC
1
2
3
PIN-
PACKAGE
6 SOT23-6
6 SOT23-6
6 SOT23-6
6 SOT23-6
MAX6630
MAX6632
SOT23
Features
6
5
4
MARK
AAPM
AAPO
AAPN
AAPP
TOP
SO
CS
SCK
1

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MAX6630 Summary of contents

Page 1

... The MAX6631/MAX6632 perform a temperature-to-digi- tal conversion once every 8s and require minimal aver- age supply current, 32µA (typ). The MAX6629/ MAX6630 perform a conversion once every 0.5s and require only 200µA (typ) supply current. Any of these temperature sensors can perform conversions more often— ...

Page 2

... T ≤ +125° +3. ≥ -55° +3. +150° +3. PSS MAX6629, MAX6630, CS high MAX6631, MAX6632, CS high CC Shutdown (Note 4 +0. ADC idle (Figure 2 low ADC converting (Figure 2) MAX6629, MAX6630 CC MAX6631, MAX6632 V falling CC = +3.3V and T = +25°C.) (Notes 3 ...

Page 3

Sign Digital Temperature Sensors ELECTRICAL CHARACTERISTICS (continued +3.0V to +5.5V -55°C to +125°C, unless otherwise noted. Typical values are and 4) PARAMETER SYMBOL LOGIC INPUTS (CS, SCK) Logic Input Low ...

Page 4

... TEMPERATURE (°C) TEMPERATURE ERROR vs. POWER-SUPPLY NOISE FREQUENCY SQUARE WAVE IN APPLIED 0.1µF CAPACITOR 100 1k PIN NAME MAX6629 MAX6630 MAX6631 MAX6632 GND SCK _______________________________________________________________________________________ Typical Operating Characteristics POWER-ON RESET (POR) THRESHOLD vs ...

Page 5

... The MAX6631/MAX6632 are optimized for minimum power consumption with their 8s conversions. The MAX6629/MAX6630 provide faster conversions, 0.5s, at the expense of power consumption. The low quiescent supply current enables the device to be powered from a logic line or the output of a gate where the high level exceeds 3V, as shown in Figure 1. While the MAX6629– ...

Page 6

Sign Digital Temperature Sensors with Serial Interface t CSS CS SCK D15 Figure 3. SPI Timing Diagram Table 1. Data Output Format D15 D14 D13 D12 D11 MSB Sign Data Table 2. Temperature Data Format ...

Page 7

... This maxi- mizes the heat transfer from the component to the sen- sor. The MAX6629/MAX6630 supply current is typically 200µA, and the MAX6631/MAX6632 supply current is typically 32µA. When used to drive high-impedance loads, the device dissipates negligible power. ...

Page 8

Sign Digital Temperature Sensors with Serial Interface 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 ...

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