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参数资料
| 型号： | DC955A |
| 厂商： | Linear Technology |
| 文件页数： | 16/34页 |
| 文件大小： | 0K |
| 描述： | BOARD DELTA SIGMA ADC LTC2483 |
| 软件下载： | QuikEval System |
| 设计资源： | DC955A Design File DC955A Schematic |
| 标准包装： | 1 |
| 系列： | Easy Drive™, QuikEval™ |
| ADC 的数量： | 1 |
| 位数： | 16 |
| 采样率（每秒）： | 6.8 |
| 数据接口： | I²C，串行 |
| 工作温度： | 0°C ~ 70°C |
| 已用 IC / 零件： | LTC2483 |
| 已供物品： | 板 |
| 相关产品： | LTC2483IDD#TRPBF-ND - IC ADC 16BIT I2C 10-DFN LTC2483CDD#TRPBF-ND - IC ADC 16BIT I2C 10-DFN LTC2483IDD#PBF-ND - IC ADC 16BIT I2C 10-DFN LTC2483CDD#PBF-ND - IC ADC 16BIT I2C 10-DFN |
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LTC2483
2483fc
Second, the increase in clock frequency will increase
proportionally the amount of sampling charge trans-
ferred through the input and the reference pins. If large
external input and/or reference capacitors (CIN, CREF)
are used, the previous section provides formulae for
evaluating the effect of the source resistance upon the
converter performance for any value of fEOSC. If small
external input and/or reference capacitors (CIN, CREF) are
used, the effect of the external source resistance upon
the LTC2483 typical performance can be inferred from
Figures 9, 10, 11 and 12 in which the horizontal axis is
scaled by 307200/fEOSC.
applicaTions inFormaTion
Figure 20. Resolution (INLMAX ≤ 1 LSB) vs
Output Data Rate and Temperature
OUTPUT DATA RATE (READINGS/SEC)
0
10
RESOLUTION
(BITS)
12
16
18
22
10
50
70
2483 F20
14
20
40
90 100
20 30
60
80
TA = 85°C
TA = 25°C
VIN(CM) = VREF(CM)
VCC = VREF = 5V
CA0/F0 = EXT CLOCK
RES = LOG 2 (VREF/INLMAX)
Third, an increase in the frequency of the external oscil-
lator above 1MHz (a more than 3+ increase in the output
data rate) will start to decrease the effectiveness of the
internalautocalibrationcircuits.Thiswillresultinaprogres-
sive degradation in the converter accuracy and linearity.
Typicalmeasuredperformancecurvesforoutputdatarates
up to 100 readings per second are shown in Figures 16
to 23. In order to obtain the highest possible level of
accuracy from this converter at output data rates above
20 readings per second, the user is advised to maximize
the power supply voltage used and to limit the maximum
ambient operating temperature. In certain circumstances,
a reduction of the differential reference voltage may
be beneficial.
Figure 21. Offset Error vs Output
Data Rate and Reference Voltage
OUTPUT DATA RATE (READINGS/SEC)
0
–10
OFFSET
ERROR
(ppm
OF
V
REF
)
–5
5
10
20
10
50
70
2483 F21
0
15
40
90 100
20 30
60
80
VCC = 5V, VREF = 2.5V
VCC = VREF = 5V
VIN(CM) = VREF(CM)
VIN = 0V
CA0/F0 = EXT CLOCK
TA = 25°C
Figure 22. Resolution (NoiseRMS ≤ 1 LSB)
vs Output Data Rate and Reference Voltage
OUTPUT DATA RATE (READINGS/SEC)
0
10
RESOLUTION
(BITS)
12
16
18
20
24
10
50
70
2483 F22
14
22
40
90 100
20 30
60
80
VIN(CM) = VREF(CM)
VIN = 0V
CA0/F0 = EXT CLOCK
TA = 25°C
RES = LOG 2 (VREF/NOISERMS)
VCC = 5V, VREF = 2.5V
VCC = VREF = 5V
Figure 23. Resolution (INLMAX ≤ 1 LSB)
vs Output Data Rate and Reference Voltage
OUTPUT DATA RATE (READINGS/SEC)
0
10
RESOLUTION
(BITS)
12
16
18
22
10
50
70
2483 F23
14
20
40
90 100
20 30
60
80
VIN(CM) = VREF(CM)
VIN = 0V
CA0/F0 = EXT CLOCK
TA = 25°C
RES = LOG 2 (VREF/INLMAX)
VCC = 5V, VREF = 2.5V
VCC = VREF = 5V
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DC956A | 功能描述:BOARD DELTA SIGMA ADC LTC2485 RoHS:是 类别:编程器，开发系统 >> 评估板 - 模数转换器 (ADC) 系列:Easy Drive™, QuikEval™ 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:- ADC 的数量:1 位数:12 采样率（每秒）:94.4k 数据接口:USB 输入范围:±VREF/2 在以下条件下的电源（标准）:- 工作温度:-40°C ~ 85°C 已用 IC / 零件:MAX11645 已供物品:板，软件 |
| DC959A | 制造商:Linear Technology 功能描述:BOARD DEMO LTC4257-1 制造商:Linear Technology 功能描述:EVAL BOARD, LTC4257CDD-1 POE |
| DC95F103V | 功能描述:热敏电阻 - NTC 10KOhms +-.1C Epoxy Coated RoHS:否 制造商:EPCOS 电阻:10 kOhms 功率额定值:150 mW 容差:2 % 端接类型:Radial 系列:B57703M 工作温度范围:- 55 C to + 125 C |
| DC95F103VN | 制造商:GE Sensing & Inspection Technologies 功能描述:Thermistor;10;PCB Mount Mtg. Type;1.5In Lead;Bare Tinned Copper 制造商:GE Measurement & Control 功能描述:+/-.1oC (0oC - 70oC) Interchangeable Chip |
| DC95F103W | 功能描述:热敏电阻 - NTC 10KOhms +-.2C Epoxy Coated RoHS:否 制造商:EPCOS 电阻:10 kOhms 功率额定值:150 mW 容差:2 % 端接类型:Radial 系列:B57703M 工作温度范围:- 55 C to + 125 C |
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