參數(shù)資料
型號(hào): TLV320AIC29IRGZ
廠商: Texas Instruments, Inc.
元件分類: Codec
英文描述: STWREO AUDIO CODEC WITH INTERGRATED HEADPHONE AND SPEAKER AMPLIFIERS
中文描述: STWREO音頻編解碼器集成耳機(jī)和音箱放大器
文件頁數(shù): 37/85頁
文件大?。?/td> 1007K
代理商: TLV320AIC29IRGZ
SLAS494A DECEMBER 2005 REVISED JANUARY 2006
www.ti.com
37
1.20
1
0.80
0.60
0.40
0.20
0
0.20
40
20
0
20
40
60
80
100
E
TA Free-Air Temperature C
°
Figure 27. Typical Plot of Single Measurement Method After Calibrating for Offset and Gain At Two
Temperatures
The second mode uses a two-measurement (differential) method. This mode requires a second conversion with
a current 82 times larger. The voltage difference between the first (TEMP1) and second (TEMP2) conversion,
using 82 times the bias current, is represented by:
kT
q
ln(N)
where:
N is the current ratio = 82
k = Boltzmann’s constant (1.38054
10
23
electrons volts/degrees Kelvin)
q = the electron charge (1.602189
10
19
°
C)
T = the temperature in degrees Kelvin
The equation for the relation between differential code and temperature may vary slightly from device to device
and can be calibrated at final system test by the user. This method provides resolution of approximately
1.5
°
C/LSB and accuracy of approximately
±
4
°
C after calibrating at room temperature.
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