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LTC2487IDEPBF 参数 Datasheet PDF下载

LTC2487IDEPBF图片预览
型号: LTC2487IDEPBF
PDF下载: 下载PDF文件 查看货源
内容描述: 16位双/四通道ADC与PGA ,易于驱动和I2C接口 [16-Bit 2-/4-Channel ADC with PGA, Easy Drive and I2C Interface]
分类和应用: 驱动
文件页数/大小: 32 页 / 651 K
品牌: Linear [ Linear ]
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LTC2487  
Typical perForMance characTerisTics  
Integral Nonlinearity  
(V = 2.7V, V = 2.5V)  
Integral Nonlinearity  
Integral Nonlinearity  
(V = 5V, V = 2.5V)  
(V = 5V, V  
= 5V)  
CC  
REF  
CC  
REF  
CC  
REF  
3
2
3
2
3
2
V
V
V
F
= 5V  
= 5V  
IN(CM)  
= GND  
V
V
V
F
= 5V  
V
V
V
F
= 2.7V  
= 2.5V  
IN(CM)  
= GND  
CC  
REF  
CC  
CC  
REF  
= 2.5V  
REF  
= 2.5V  
= 1.25V  
= 1.25V  
IN(CM)  
= GND  
O
O
O
1
0
–45°C  
1
0
1
0
25°C  
–45°C, 25°C, 85°C  
–45°C, 25°C, 85°C  
85°C  
–1  
–2  
–3  
–1  
–2  
–3  
–1  
–2  
–3  
–2.5 –2 –1.5 –1 –0.5  
0
0.5  
1
1.5  
2
2.5  
–1.25 –0.75  
0.25  
0.25  
0.75  
1.25  
–1.25 –0.75  
0.25  
0.25  
0.75  
1.25  
INPUT VOLTAGE (V)  
INPUT VOLTAGE (V)  
INPUT VOLTAGE (V)  
2487 G03  
2487 G01  
2487 G02  
Total Unadjusted Error  
Total Unadjusted Error  
Total Unadjusted Error  
(V = 2.7V, V = 2.5V)  
(V = 5V, V  
= 5V)  
(V = 5V, V  
= 2.5V)  
CC  
REF  
CC  
REF  
CC  
REF  
12  
8
12  
8
12  
8
V
V
V
= 5V  
V
V
V
= 5V  
V
V
V
= 2.7V  
CC  
CC  
CC  
= 5V  
= 2.5V  
= 2.5V  
REF  
REF  
85°C  
REF  
= 2.5V  
= 1.25V  
= 1.25V  
IN(CM)  
IN(CM)  
IN(CM)  
85°C  
F
= GND  
F
= GND  
F = GND  
O
O
O
85°C  
25°C  
25°C  
25°C  
4
0
4
0
4
0
–45°C  
–45°C  
–45°C  
–4  
–8  
–4  
–8  
–4  
–8  
–12  
–12  
–12  
–2.5 –2 –1.5 –1 –0.5  
0
0.5  
1
1.5  
2
2.5  
–1.25 –0.75  
0.25  
0.25  
0.75  
1.25  
–1.25 –0.75  
0.25  
0.25  
0.75  
1.25  
INPUT VOLTAGE (V)  
INPUT VOLTAGE (V)  
INPUT VOLTAGE (V)  
2487 G04  
2487 G05  
2487 G06  
Noise Histogram (6.8sps)  
Noise Histogram (7.5sps)  
Long-Term ADC Readings  
14  
12  
14  
12  
5
4
10,000 CONSECUTIVE  
READINGS  
10,000 CONSECUTIVE  
READINGS  
V
V
V
V
= 5V  
REF  
T = 25°C  
A
CC  
= 5V  
RMS NOISE = 0.60µV  
RMS = 0.59µV  
AVERAGE = –0.19µV  
RMS = 0.60µV  
AVERAGE = –0.69µV  
V
V
V
T
= 2.7V  
CC  
= 2.5V  
REF  
V
V
V
T
= 5V  
= 5V  
= 0V  
GAIN = 256  
CC  
REF  
IN  
IN(CM)  
3
= 2.5V  
= 0V  
= 0V  
10  
8
10  
8
IN  
A
IN  
A
2
= 25°C  
= 25°C  
1
GAIN = 256  
GAIN = 256  
0
6
6
–1  
–2  
–3  
–4  
–5  
4
4
2
2
0
0
–1.8 –1.2 –0.6  
0
1.8  
–1.8 –1.2 –0.6  
0
1.8  
–3 –2.4  
0.6 1.2  
–3 –2.4  
0.6 1.2  
0
10  
30  
40  
50  
60  
20  
OUTPUT READING (µV)  
TIME (HOURS)  
OUTPUT READING (µV)  
2487 G08  
2487 G07  
2487 G09  
2487fa