ZHCSJM2C April   2019  – November 2019

PRODUCTION DATA.

1. 特性
2. 应用
3. 说明
1.     Device Images
4. 修订历史记录
5. Pin Configuration and Functions
6. Specifications
7. Detailed Description
8. Application and Implementation
1. 8.1 Application Information
2. 8.2 Typical Application
1. 8.2.1 Connection to an ADC
9. Power Supply Recommendations
10. 10Layout
11. 11器件和文档支持
12. 12机械、封装和可订购信息

• DBZ|3

7.3 Feature Description

As shown in Figure 2, the TMP23x-Q1 devices are linear. A small VOUT gain shift, however, is present at temperatures above 100°C. When small shifts are expected, a piecewise linear function provides the best accuracy and is used for the device accuracy specifications (see Specifications). Typical output voltages of the TMP23x-Q1 devices across the full operating temperature range are listed in Table 3 and Table 4. The ideal linear columns represent the ideal linear VOUT output response with respect to temperature, while the piecewise linear columns indicate the small voltage shift at elevated temperatures.

The piecewise linear function uses three temperature ranges listed in Table 1 and Table 2. In equation form, the voltage output VOUT of the TMP23x-Q1 is calculated by Equation 1:

Equation 1. VOUT = (TA – TINFL) × TC + VOFFS

where

• VOUT is the TMP23x-Q1 voltage output for a given temperature
• TA is the ambient temperature in °C
• TINFL is the temperature inflection point for a piecewise segment in °C
• TC is the TMP23x-Q1 temperature coefficient or gain
• VOFFS is the TMP23x-Q1 voltage offset

Therefore, the TA temperature for a given VOUT voltage output within a piecewise voltage range (VRANGE) is calculated in Equation 2. For applications where the accuracy enhancement above 100°C is not required, use the first row of Table 1 and Table 2 for all voltages.

Equation 2. TA = (VOUT – VOFFS ) / TC + TINFL

Table 1. TMP235-Q1 Piecewise Linear Function Summary

TA RANGE (°C) VRANGE (mV) TINFL (°C) TC (mV/°C) VOFFS (mV)
–40 to +100 < 1500 0 10 500
100 to 125 1500 to 1752.5 100 10.1 1500
125 to 150 > 1752.5 125 10.6 1752.5

Table 2. TMP236-Q1 Piecewise Linear Function Summary

TA RANGE (°C) VRANGE (mV) TINFL (°C) TC (mV/°C) VOFFS (mV)
–40 to +100 ≤ 2350 0 19.5 400
100 to 125 > 2350 100 19.7 2350
125 to 150

Table 3. TMP235-Q1 Transfer Table

TEMPERATURE (°C) VOUT (mV)
IDEAL LINEAR VALUES
VOUT (mV)
PIECEWISE LINEAR VALUES
–40 100 100
–35 150 150
–30 200 200
–25 250 250
–20 300 300
–15 350 350
–10 400 400
–5 450 450
0 500 500
5 550 550
10 600 600
15 650 650
20 700 700
25 750 750
30 800 800
35 850 850
40 900 900
45 950 950
50 1000 1000
55 1050 1050
60 1100 1100
65 1150 1150
70 1200 1200
75 1250 1250
80 1300 1300
85 1350 1350
90 1400 1400
95 1450 1450
100 1500 1500
105 1550 1550.5
110 1600 1601
115 1650 1651.5
120 1700 1702
125 1750 1752.5
130 1800 1805.5
135 1850 1858.5
140 1900 1911.5
145 1950 1964.5
150 2000 2017.5

Table 4. TMP236-Q1 Transfer Table

TEMPERATURE (°C) VOUT (mV)
IDEAL LINEAR VALUES
VOUT (mV)
PIECEWISE LINEAR VALUES
–40
–35
–30
–25
–20
–15
–10 205 205
–5 303 303
0 400 400
5 498 498
10 595 595
15 693 693
20 790 790
25 888 888
30 985 985
35 1083 1083
40 1180 1180
45 1278 1278
50 1375 1375
55 1473 1473
60 1570 1570
65 1668 1668
70 1765 1765
75 1863 1863
80 1960 1960
85 2058 2058
90 2155 2155
95 2253 2253
100 2350 2350
105 2448 2448.5
110 2545 2547
115 2643 2645.4
120 2740 2743.9
125 2838 2842.4
130
135
140
145
150