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TMP121-EP の電気的特性と機能

TMP121-EPのメーカーはBurr-Brown Corporationです、この部品の機能は「ACCURATE DIGITAL TEMPERATURE SENSOR」です。


製品の詳細 ( Datasheet PDF )

部品番号 TMP121-EP
部品説明 ACCURATE DIGITAL TEMPERATURE SENSOR
メーカ Burr-Brown Corporation
ロゴ Burr-Brown Corporation ロゴ 




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TMP121-EP Datasheet, TMP121-EP PDF,ピン配置, 機能
BurrĆBrown Products
from Texas Instruments
TMP121-EP
TMP123-EP
SGLS315 – SEPTEMBER 2005
1.5°C ACCURATE DIGITAL TEMPERATURE SENSOR WITH SPI™ INTERFACE
FEATURES
Controlled Baseline
– One Assembly/Test Site, One Fabrication
Site
Extended Temperature Performance of -40°C
to 125°C
Enhanced Diminishing Manufacturing
Sources (DMS) Support
Enhanced Product-Change Notification
Qualification Pedigree (1)
Digital Output: SPI-Compatible Interface
Resolution: 12-Bit + Sign, 0.0625°C
(1) Component qualification in accordance with JEDEC and
industry standards to ensure reliable operation over an
extended temperature range. This includes, but is not limited
to, Highly Accelerated Stress Test (HAST) or biased 85/85,
temperature cycle, autoclave or unbiased HAST,
electromigration, bond intermetallic life, and mold compound
life. Such qualification testing should not be viewed as
justifying use of this component beyond specified
performance and environmental limits.
Accuracy: ±1.5°C from –25°C to 85°C (max)
Low Quiescent Current: 50 µA (max)
Wide Supply Range: 2.7 V to 5.5 V
Tiny SOT23-6 Package
Operation to 150°C
APPLICATIONS
Power-Supply Temperature Monitoring
Computer Peripheral Thermal Protection
Notebook Computers
Battery Management
Environmental Monitoring
DESCRIPTION
The TMP121 and TMP123 are SPI-compatible temperature sensors available in the tiny SOT23-6 package.
Requiring no external components, the TMP121 and TMP123 are capable of measuring temperatures within 2°C
of accuracy over a temperature range of –40°C to 125°C. Low supply current and a supply range from 2.7 V to
5.5 V make the TMP121 and TMP123 excellent candidates for low-power applications.
The TMP121 and TMP123 are ideal for extended thermal measurement in a variety of communication, computer,
consumer, environmental, industrial, and instrumentation applications.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
SPI is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2005, Texas Instruments Incorporated

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TMP121-EP pdf, ピン配列
www.ti.com
ELECTRICAL CHARACTERISTICS
At TA = –40°C to 125°C and V+ = 2.7 V to 5.5 V, unless otherwise noted
PARAMETER
TEST CONDITIONS
TEMPERATURE INPUT
Range
–25°C to 85°C
Accuracy (temperature error)
–40°C to 125°C
–40°C to 150°C
Accuracy vs Supply
Resolution
DIGITAL INPUT/OUTPUT
VIH
VIL
IIN
VOL SO
VOH SO
Input logic levels
Input current, SO, SCK, CS
Output logic levels
Resolution
0 V VINV+
ISINK = 3 mA
ISOURCE = 2 mA
Input capacitance, SO, SCK, CS
Conversion time
12-Bit
Conversion period(1)
12-BIt
POWER SUPPLY
Operating range
IQ Quiescent current
ISD Shutdown current (TPM121)
ISD Shutdown current (TMP123)
TEMPERATURE RANGE
Serial bus inactive
Serial bus inactive
Serial bus inactive
Specified range
Operating range
Storage range
θJA Thermal resistance
SOT23-6 surface-mount
(1) Period indicates time between conversion starts.
PIN CONFIGURATIONS
TMP121-EP
TMP123-EP
SGLS315 – SEPTEMBER 2005
MIN TYP MAX UNIT
–40
±0.5
±1
±1.5
0.1
±0.0625
125 °C
±1.5
±2 °C
°C/V
°C
0.7(V+)
(V+)–0.4
0.3(V+)
±1
0.4
12
2.5
240 320
480 640
V
µA
V
Bits
pF
ms
ms
2.7 5.5 V
35 50 µA
0.1 1 µA
0.1 3 µA
–40 125 °C
–55 150 °C
–60 150 °C
200 °C/W
Top View
TMP121(1)
TMP123(1)
SOT23-6
NC 1
GND 2
V+ 3
6 SO
5 CS
4 SCK
GND 1
NC 2
V+ 3
6 SO
5 CS
4 SCK
SOT23−6
NC = No Connection(2)
SOT23−6
NC = No Connection(2)
Pin 1 orientation is determined by package marking.
(1) Pin 1 of the SOT23-6 package is determined by orienting the package marking as shown.
(2) Pins labeled NC should be left floating or connected to GND.
3


3Pages


TMP121-EP 電子部品, 半導体
TMP121-EP
TMP123-EP
SGLS315 – SEPTEMBER 2005
www.ti.com
APPLICATION INFORMATION (continued)
TEMPERATURE REGISTER
The temperature register of the TMP121 and TMP123 is a 16 bit, signed read-only register that stores the output
of the most recent conversion. Up to 16 bits can be read to obtain data and are described in Table 1. The first 13
bits are used to indicate temperature with bits D2 = 0 and D1, D0 in a high impedance state. Data format for
temperature is summarized in Table 2. Following power-up or reset, the temperature register reads 0°C until the
first conversion is complete.
Table 1. Temperature Register
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
T12 T11 T10 T9 T8 T7 T6 T5 T4 T3 T2 T1 T0
0
Z
Z
TEMPERATURE
(°C)
150
125
25
0.0625
0
–0.0625
–25
–55
Table 2. Temperature Data Format
DIGITAL OUTPUT(1)
(BINARY)
0100 1011 0000 0000
0011 1110 1000 0000
0000 1100 1000 0000
0000 0000 0000 1000
0000 0000 0000 0000
1111 1111 1111 1000
1111 0011 1000 0000
1110 0100 1000 0000
(1) The last two bits are high impedance and are shown as 00 in the table.
HEX
4B00
3E80
0C80
0008
0000
FFF8
F380
E480
COMMUNICATING WITH THE TMP121
The TMP121 and TMP123 continuously convert temperatures to digital data while CS is high. CS must be high
for a minimum of one conversion time (320 ms max) to update the temperature data. Reading temperature data
from the TMP121 and TMP123 is initiated by pulling CS low, which causes any conversion in progress to
terminate, and places the device into analog shutdown. Quiescent current is reduced to 1 µA during analog
shutdown. Once CS is pulled low, temperature data from the last completed conversion prior to dropping CS is
latched into the shift register and clocked out at SO on the falling SCK edge. The 16-bit data word is clocked out
sign bit first, followed by the MSB. Any portion of the 16-bit word can be read before raising CS. The TMP121
and TMP123 typically require 0.25 s to complete a conversion and consume 50 µA of current during this period.
If CS is held high for longer than one conversion time period the TMP121 and TMP123 goes into idle mode for
0.25 s, requiring only 20 µA of current. A new conversion begins every 0.5 s. Figure 6 describes the conversion
timing for the TMP121 and TMP123.
0.25s
0.5s
50µA (active)
20µA (idle)
Figure 6. Conversion Time and Period
The serial data of the TMP121 and TMP123 consists of 12-bit plus sign temperature data followed by a
confirmation bit and two high impedance bits. Data is transmitted in binary two's complement format. Figure 7
describes the output data of the TMP121 and TMP123.
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共有リンク

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部品番号部品説明メーカ
TMP121-EP

1.5 Degrees C Accurate Digital Temperature Sensor w/SPI Interface

Texas Instruments
Texas Instruments
TMP121-EP

ACCURATE DIGITAL TEMPERATURE SENSOR

Burr-Brown Corporation
Burr-Brown Corporation


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