参数资料
| 型号： | SX8724E082TDT |
| 厂商： | Semtech |
| 文件页数： | 41/53页 |
| 文件大小： | 0K |
| 描述： | IC DAS PRESS/TEMP SENS 16MLPQ |
| 标准包装： | 1 |
| 系列： | ZoomingADC™ |
| 类型： | 数据采集系统（DAS） |
| 输入类型： | 差分 |
| 输出类型： | 数字 |
| 接口： | I²C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-VQFN 裸露焊盘 |
| 供应商设备封装： | 16-MLPQ（4x4） |
| 包装： | 标准包装 |
| 产品目录页面： | 585 (CN2011-ZH PDF) |
| 其它名称： | SX8724E082TDTDKR |
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ADVANCED COMMUNICATIONS & SENSING
V1.23 2009 Semtech Corp.
www.semtech.com
46
SX8724
ZoomingADC for Pressure and Temperature Sensing
Gain Error and Offset Error
Gain error is defined as the amount of deviation between the ideal transfer function (theoretical Equation 18)
and the measured transfer function (with the offset error removed).
The actual gain of the different stages can vary depending on the fabrication tolerances of the different
elements. Although these tolerances are specified to a maximum of
±3%, they will be most of the time around
±0.5%. Moreover, the tolerances between the different stages are not correlated and the probability to get the
maximal error in the same direction in all stages is very low. Finally, these gain errors can be calibrated by the
software at the same time with the gain errors of the sensor for instance.
Figure 27 shows gain error drift vs. temperature for different PGA gains. The curves are expressed in % of Full-
Scale Range (FSR) normalized to 25°C.
Offset error is defined as the output code error for a zero volt input (ideally, output code = 0). The offset of the
ADC and the PGA1 stage are completely suppressed if NELCONV > 1.
The measured offset drift vs. temperature curves for different PGA gains are depicted in Figure 28. The output
offset error, expressed in LSB for 16-bit setting, is normalized to 25°C. Notice that if the ADC is us ed alone, the
output offset error is below
±1 LSB and has no drift.
NORMALIZED TO 25°C
Figure 27 - Gain Error vs. Temperature for Different PGA Gains
NORMALIZED TO 25°C
Figure 28 - Offset Error vs. Temperature for Different PGA Gains
-0.4
-0.3
-0.2
-0.1
0.0
0.1
0.2
-50
-25
0
25
50
75
100
Temperature [°C]
G
a
in
E
rr
o
r
[%
o
f
F
S
R
]
1
5
20
100
-40
-20
0
20
40
60
80
100
-50
-25
0
25
50
75
100
Temperature [°C]
O
u
tp
u
t
O
ff
s
e
t
E
rr
o
r
[L
S
B
]
1
5
20
100
相关PDF资料 |
PDF描述 |
|---|---|
| SX8725CWLTDT | IC DAS ADC 16BIT I2C/SRL |
| SX8725E083TDT | IC DAS PRESS/TEMP SENS 12MLPD |
| SY10E445JC | IC CONV 4-BIT SER/PAR 28-PLCC |
| SY10E446JC TR | IC CONV 4-BIT SER/PAR 28-PLCC |
| SY54017ARMG TR | IC MULTIPLEXER DUAL 1X1 16MLF |
相关代理商/技术参数 |
参数描述 |
|---|---|
| SX8724E082TRT | 功能描述:IC DAS PRESSURE/TEMP SENS 16MLPQ RoHS:是 类别:集成电路 (IC) >> 接口 - 传感器和探测器接口 系列:ZoomingADC™ 其它有关文件:Automotive Product Guide 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:74 系列:- 类型:触控式传感器 输入类型:数字 输出类型:数字 接口:JTAG，串行 电流 - 电源:100µA 安装类型:表面贴装 封装/外壳:20-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:20-TSSOP 包装:管件 |
| SX8724EVK | 制造商:Semtech Corporation 功能描述:Evaluation Board for SX8724E082TRT Data Acquisition System |
| SX8724S | 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:ZoomingADC for sensing data acquisition |
| SX8724SEVK | 制造商:Semtech Corporation 功能描述: 制造商:Semtech Corporation 功能描述:Evaluation Kit for SX8724S |
| SX8724SWLTDT | 制造商:Semtech Corporation 功能描述:3 INPUTS ZOOMING ADC WITH SPI |
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