1631A [MAXIM]

High-Precision Digital Thermometer and Thermostat; 高精度数字温度计和温度监控器
1631A
元器件型号: 1631A
生产厂家: MAXIM INTEGRATED PRODUCTS    MAXIM INTEGRATED PRODUCTS
描述和应用:

High-Precision Digital Thermometer and Thermostat
高精度数字温度计和温度监控器

监控
PDF文件: 总15页 (文件大小:197K)
下载文档:  下载PDF数据表文档文件
型号参数:1631A参数
生命周期Contact Manufacturer
IHS 制造商MICRO ELECTRONICS LTD
Reach Compliance Codeunknown
风险等级5.66
Is SamacsysN
Base Number Matches1
MAX34334CSE前5页PDF页面详情预览
DS1631/DS1631A/DS1731
High-Precision Digital
Thermometer and Thermostat
www.maxim-ic.com
FEATURES
DS1631 and DS1631A Provide
±0.5°C
Accuracy over a 0°C to +70°C Range
DS1731 Provides
±1°C
Accuracy over a
-10°C to +85°C Range
DS1631A Automatically Begins Taking
Temperature Measurements at Power-Up
Operating Temperature Range: -55°C to
+125°C (-67°F to +257°F)
Temperature Measurements Require No
External Components
Output Resolution is User-Selectable to 9,
10, 11, or 12 Bits
Wide Power-Supply Range (+2.7V to +5.5V)
Converts Temperature-to-Digital Word in
750ms (max)
Multidrop Capability Simplifies Distributed
Temperature-Sensing Applications
Thermostatic Settings are User-Definable
and Nonvolatile (NV)
Data is Read/Written Through 2-Wire Serial
Interface (SDA and SCL Pins)
All Three Devices are Available in 8-Pin
μSOP
Packages and the DS1631 is Also
Available in a 150mil SO package—see
Table 1 for Ordering Information
PIN CONFIGURATIONS
SDA
SCL
T
OUT
GND
1
2
3
4
8
7
6
5
V
DD
A
0
A
1
A
2
μSOP
(DS1631U+, DS1631AU+,
DS1731U+)
SDA
SCL
T
OUT
1
2
3
4
8
7
6
5
V
DD
A
0
A
1
A
2
GND
SO (150mil and 208mil)
(DS1631Z+, DS1631S+)
See Table 2 for Pin Descriptions
APPLICATIONS
Network Routers and Switches
Cellular Base Stations
Portable Products
Any Space-Constrained Thermally Sensitive
Product
DESCRIPTION
The DS1631, DS1631A, and DS1731 digital thermometers provide 9, 10, 11, or 12-bit temperature
readings over a -55°C to +125°C range. The DS1631 and DS1631A thermometer accuracy is
±0.5°C
from 0°C to +70°C with 3.0V
V
DD
5.5V, and the DS1731 accuracy is
±1°C
from -10°C to +85°C with
3.0V
V
DD
5.5V. The thermostat on all three devices provides custom hysteresis with user-defined trip
points (T
H
and T
L
). The T
H
and T
L
registers and thermometer configuration settings are stored in NV
EEPROM so they can be programmed prior to installation. In addition, the DS1631A automatically
begins taking temperature measurements at power-up, which allows it to function as a stand-alone
thermostat. Communication with the DS1631/DS1631A/DS1731 is achieved through a 2-wire serial
interface, and three address pins allow up to eight devices to be multidropped on the same 2-wire bus.
Pin descriptions for the DS1631/DS1631A/DS1731 are provided in Table 2 and user-accessible registers
are summarized in Table 3. A functional diagram is shown in Figure 1.
1 of 15
102307
DS1631/DS1631A/DS1731
Table 1. ORDERING INFORMATION
ORDERING
NUMBER
DS1631U+
DS1631U+T&R
DS1631Z+
DS1631Z+T&R
DS1631AU+
PACKAGE
MARKING
D1631 (See Note)
D1631 (See Note)
DS1631Z (See Note)
DS1631Z (See Note)
1631A (See Note)
DESCRIPTION
DS1631 in Lead-Free 8-Pin
μSOP
DS1631 in Lead-Free 8-Pin
μSOP,
3000 Piece Tape-and-
Reel
DS1631 in Lead-Free 150 mil 8-Pin SO
DS1631 in Lead-Free 150 mil 8-Pin SO, 2500 Piece Tape-
and-Reel
DS1631A in Lead-Free 8-Pin
μSOP
DS1631A in Lead-Free 8-Pin
μSOP,
3000 Piece Tape-and-
Reel
DS1631 in Lead-Free 208 mil 8-Pin SO
DS1631 in Lead-Free 208 mil 8-Pin SO, 2000 Piece Tape-
and-Reel
DS1631 in Lead-Free 300 mil 8-Pin DIP
DS1731 in Lead-Free 8-Pin
μSOP
DS1731 in Lead-Free 8-Pin
μSOP,
3000 Piece Tape-and-
Reel
DS1631 in 8-Pin
μSOP
DS1631 in 8-Pin
μSOP,
3000-Piece Tape-and-Reel
DS1631 in 150mil 8-Pin SO
DS1631 in 150mil 8-Pin SO, 2500-Piece Tape-and-Reel
DS1631A in 8-Pin
μSOP
DS1631A in 8-Pin
μSOP,
3000-Piece Tape-and-Reel
DS1631 in 208 mil 8-Pin SO
DS1631 in Lead-Free 208 mil 8-Pin SO, 2000 Piece Tape-
and-Reel
DS1631 in 300 mil 8-Pin DIP
DS1731 in 8-Pin
μSOP
DS1731 in 8-Pin
μSOP,
3000-Piece Tape-and-Reel
DS1631AU+T&R 1631A (See Note)
DS1631S+
DS1631S+T&R
DS1631+
DS1731U+
DS1731U+T&R
DS1631U
DS1631U/T&R
DS1631Z
DS1631Z/T&R
DS1631AU
DS1631AU/T&R
DS1631S
DS1631S/T&R
DS1631
DS1731U
DS1731U/T&R
DS1631S (See Note)
DS1631S (See Note)
DS1631 (See Note)
D1731 (See Note)
D1731 (See Note)
D1631
D1631
DS1631Z
DS1631Z
1631A
1631A
DS1631S
DS1631S
DS1631
D1731
D1731
Note:
A "+" symbol will also be marked on the package near the Pin 1 indicator
Table 2. DETAILED PIN DESCRIPTION
PIN
1
2
3
4
5
6
7
8
SYMBOL
SDA
SCL
T
OUT
GND
A
2
A
1
A
0
V
DD
DESCRIPTION
Data Input/Output Pin for 2-Wire Serial Communication Port. Open-Drain.
Clock Input Pin for 2-Wire Serial Communication Port.
Thermostat Output Pin. Push-Pull.
Ground Pin
Address Input Pin
Address Input Pin
Address Input Pin
Supply Voltage Pin. +2.7V to +5.5V Power-Supply Pin.
2 of 15
DS1631/DS1631A/DS1731
Figure 1. FUNCTIONAL DIAGRAM
V
DD
CONFIGURATION REGISTER
AND CONTROL LOGIC
SCL
SDA
A
0
A
1
A
2
ADDRESS
AND
I/O CONTROL
TEMPERATURE SENSOR
and
ΔΣ
ADC
TEMPERATURE REGISTER
T
H
REGISTER
DIGITAL
COMPARATOR/LOGIC
T
L
REGISTER
T
OUT
GND
ABSOLUTE MAXIMUM RATINGS*
Voltage on any Pin Relative to Ground
Operating Temperature Range
Storage Temperature Range
Solder Dip Temperature (10s)
Reflow Oven Temperature
-0.5V
to +6.0V
-55°C to +125°C
-55°C to +125°C
See IPC/JEDEC J-STD-020A Specification
+220°C
*
These are stress ratings only and functional operation of the device at these or any other conditions
above those indicated in the operation sections of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods of time may affect reliability.
3 of 15
DS1631/DS1631A/DS1731
DC ELECTRICAL CHARACTERISTICS
(V
DD
= 2.7V to 5.5V; T
A
= -55°C to +125°C.)
PARAMETER
Supply Voltage
DS1631, DS1631A
Thermometer Error
SYMBOL
V
DD
CONDITION
0°C to +70°C,
3.0V
V
DD
5.5V
0°C to +70°C,
2.7V
V
DD
<
3.0V
-55°C to +125°C
-10°C to +85°C,
3.0V
V
DD
5.5V
-10°C to +85°C,
2.7V
V
DD
<
3.0V
-55°C to +125°C
-0.5
0.7 x
V
DD
0
0
-10
MIN
2.7
MAX
5.5
±0.5
±1
±2
±1
±1.5
±2
0.3 x V
DD
V
DD
+ 0.3
0.4
0.6
+10
1
mA
1.25
400
110
800
2.4
0.4
µA
nA
V
V
4
1
1
3
V
V
V
µA
°C
2
°C
2
UNITS
V
NOTES
1
T
ERR
DS1731
Thermometer Error
Low-Level Input
Voltage
High-Level Input
Voltage
SDA Low-Level
Output Voltage
Input Current Each
I/O Pin
T
ERR
V
IL
V
IH
V
OL1
V
OL2
3mA sink current
6mA sink current
0.4 < V
I/O
< 0.9V
DD
Temperature
conversion
-55°C to +85°C
Temperature
conversion
+85°C to +125°C
E
2
write
Communication only
0°C to +70°C
1mA source current
4mA sink current
Active Supply
Current
I
DD
Standby Supply
Current
T
OUT
Output Logic
Voltage
I
STBY
V
OH
V
OL
4 of 15
DS1631/DS1631A/DS1731
AC ELECTRICAL CHARACTERISTICS
(V
DD
= 2.7V to 5.5V; T
A
= -55°C to +125°C.)
PARAMETER
SYMBOL
CONDITION
9-bit resolution
10-bit
resolution
11-bit
resolution
12-bit
resolution
MIN
TYP MAX
93.75
187.5
375
750
0
1.3
400
kHz
µs
5
ms
UNITS
NOTES
Temperature
Conversion Time
t
TC
SCL Frequency
Bus Free Time
Between a STOP and
START Condition
START and Repeated
START Hold Time
from Falling SCL
Low Period of SCL
High Period of SCL
Repeated START
Condition Setup Time
to Rising SCL
Data-Out Hold Time
from Falling SCL
Data-In Setup Time to
Rising SCL
Rise Time of SDA and
SCL
Fall Time of SDA and
SCL
STOP Setup Time to
Rising SCL
Capacitive Load for
Each Bus Line
I/O Capacitance
Input Capacitance
Spike Pulse Width that
can be Suppressed by
Input Filter
f
SCL
t
BUF
t
HD:STA
t
LOW
t
HIGH
t
SU:STA
t
HD:DAT
t
SU:DAT
t
R
t
F
t
SU:STO
C
B
C
I/O
C
I
t
SP
0.6
1.3
0.6
0.6
0
100
20 + 0.1C
B
20 + 0.1C
B
0.6
400
10
5
0
50
1000
300
0.9
µs
µs
µs
µs
µs
ns
ns
ns
µs
pF
pF
pF
ns
5, 6
5
5
5
5
5
5, 7
5, 7
5
NOTES:
All voltages are referenced to GND.
See Figure 2 for Typical Operating Curves.
Specified with T
OUT
pin open; A
0
, A
1
, A
2
= 0V or V
DD
; and f
SCL
2Hz.
Specified with temperature conversions stopped; T
OUT
pin open; SDA = V
DD
; SCL = V
DD
; and A
0
, A
1
,
A
2
= 0V or V
DD
.
5) See Timing Diagram in Figure 3. All timing is referenced to 0.9 x V
DD
and 0.1 x V
DD
.
6) After this period the first clock pulse is generated.
7) For example, if C
B
= 300pF, then t
R
[min] = t
F
[min] = 50ns.
5 of 15
1)
2)
3)
4)
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