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| 型號(hào)： | TPIC8300IPWRQ1 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 模擬信號(hào)調(diào)理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PDSO16 |
| 封裝： | PLASTIC, TSSOP-16 |
| 文件頁(yè)數(shù)： | 43/47頁(yè) |
| 文件大?。?/td> | 546K |
| 代理商： | TPIC8300IPWRQ1 |
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VDIO
= (V
– VOS – (TCVOS2 × Temp) – (TCVOS2 × Temp ) ×
digital
input
2
Gain × (1 + (TC
× Temp))
Gain1
VccA × 1024
www.ti.com
SLDS171 – NOVEMBER 2009
Principles of Operation
The system transfer equation is shown in Equation 1.
(1)
Where
Vinput = Voltage input to the Logic (DSP) block. This voltage is the same as the output of the Analog Front
End
VDIOdigital = Digital output of the logic (DSP) block
Temp = Difference between ambient temperature and room temperature
VOS = Offset adjust
TCVOS1 = Offset TC1 adjust
TCVOS2 = Offset TC2 adjust
Gain = Gain
TCGain1 = Gain TC1 adjust
VccA = ADC reference
VDIOdigital = 0 for lower clamp (TA = –40°C to 85°C)
VDIOdigital = 1023 for upper clamp (TA = –40°C to 85°C)
The range and resolution of the parameters is given in Table 1.
Table 1. Output Parameters
ADJUSTMENT
DECIMAL
BINARY
ADJUSTMENT
ITEM
SYMBOL
BIT NO.
DEFAULT
RANGE
VALUE
511
111111111
+120 mV
Input coarse offset
TRVOSC
9
±120 mV
0 mV
256
100000000
0 mV
0
-120 mV
255
11111111
4 × 510
μV
Input fine offset
TRVOSF
8
0 to 4 × 510
μV
0
μV
0
63
1111111
(+25
μV/°C) × 3
Input offset first-order
temperature
TRTCVOS1
7
(±25
μV/°C) × 3
0
μV/°C
0
coefficient
-64
10000000
(-25
μV/°C) × 3
Input offset
63
1111111
40 nV/°C2
second-order
0
TRTCVOS2
7
±40 nV/°C2
0
μV/°C2
temperature
-64
10000000
-40 nV/°C2
coefficient
255
1111111
125%
Gain
TRGAIN
9
100 + 25%
100%
0
100%
-255
10000000
75%
Gain first-order
0
0 ppm/°C
temperature
TRTCGAIN1
6
-900 to 0 ppm/°C
0 ppm/°C
-63
1
-900 ppm/°C
coefficient
Copyright 2009, Texas Instruments Incorporated
5
Product Folder Link(s): TPIC83000-Q1
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