参数资料
型号: DC939A
厂商: Linear Technology
文件页数: 42/42页
文件大小: 0K
描述: BOARD DELTA SIGMA ADC LTC2484
软件下载: QuikEval System
设计资源: DC939A Design File
DC939A Schematic
标准包装: 1
系列: Easy Drive™, QuikEval™
ADC 的数量: 1
位数: 24
采样率(每秒): 6.8
数据接口: MICROWIRE?,串行,SPI?
工作温度: 0°C ~ 70°C
已用 IC / 零件: LTC2484
已供物品:
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LTC2484
9
2484fd
TYPICAL PERFORMANCE CHARACTERISTICS
Conversion Current
vs Output Data Rate
Integral Nonlinearity (2x Speed
Mode; VCC = 5V, VREF = 5V)
Integral Nonlinearity (2x Speed
Mode; VCC = 5V, VREF = 2.5V)
Integral Nonlinearity (2x Speed
Mode; VCC = 2.7V, VREF = 2.5V)
Noise Histogram
(2x Speed Mode)
Offset Error vs VIN(CM)
(2x Speed Mode)
Offset Error vs Temperature
(2x Speed Mode)
OUTPUT DATA RATE (READINGS/SEC)
0
SUPPLY
CURRENT
(μA)
500
450
400
350
300
250
200
150
100
80
2484 G28
20
40
60
100
70
10
30
50
90
VCC = 5V
VCC = 3V
VREF = VCC
IN+ = GND
IN= GND
SCK = NC
SDO = NC
SDI = GND
CS GND
fO = EXT OSC
TA = 25°C
INPUT VOLTAGE (V)
–3
INL
(ppm
OF
V
REF
)
–1
1
3
–2
0
2
–1.5
–0.5
0.5
1.5
2484 G29
2.5
–2
–2.5
–1
0
1
2
VCC = 5V
VREF = 5V
VIN(CM) = 2.5V
fO = GND
25°C, 90°C
–45°C
INPUT VOLTAGE (V)
–3
INL
(ppm
OF
V
REF
)
–1
1
3
–2
0
2
–0.75
–0.25
0.25
0.75
2484 G30
1.25
–1.25
VCC = 5V
VREF = 2.5V
VIN(CM) = 1.25V
fO = GND
90°C
–45°C, 25°C
INPUT VOLTAGE (V)
–3
INL
(ppm
OF
V
REF
)
–1
1
3
–2
0
2
–0.75
–0.25
0.25
0.75
2484 G31
1.25
–1.25
VCC = 2.7V
VREF = 2.5V
VIN(CM) = 1.25V
fO = GND
90°C
–45°C, 25°C
OUTPUT READING (μV)
179
NUMBER
OF
READINGS
(%)
8
10
12
186.2
2484 G32
6
4
181.4
183.8
188.6
2
0
16
14
10,000 CONSECUTIVE
READINGS
VCC = 5V
VREF = 5V
VIN = 0V
GAIN = 256
TA = 25°C
RMS = 0.86μV
AVERAGE = 0.184mV
RMS Noise vs VREF
(2x Speed Mode)
VREF (V)
0
RMS
NOISE
(μV)
0.6
0.8
1.0
4
2484 G33
0.4
0.2
0
1
2
3
5
VCC = 5V
VIN = 0V
VIN(CM) = GND
fO = GND
TA = 25°C
VIN(CM) (V)
–1
180
OFFSET
ERROR
(μV)
182
186
188
190
200
194
1
3
4
2484 G34
184
196
198
192
0
2
5
6
VCC = 5V
VREF = 5V
VIN = 0V
fO = GND
TA = 25°C
TEMPERATURE (°C)
–45
OFFSET
ERROR
(μV)
200
210
220
75
2484 G35
190
180
160
–15
15
45
–30
90
0
30
60
170
240
230
VCC = 5V
VREF = 5V
VIN = 0V
VIN(CM) = GND
fO = GND
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