参数资料
型号: DC956A
厂商: Linear Technology
文件页数: 27/40页
文件大小: 0K
描述: BOARD DELTA SIGMA ADC LTC2485
软件下载: QuikEval System
设计资源: DC956A Design File
DC956A 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: I²C,串行
工作温度: 0°C ~ 70°C
已用 IC / 零件: LTC2485
已供物品:
相关产品: LTC2485CDD#TRPBF-ND - IC ADC 24BIT I2C 10-DFN
LTC2485IDD#TRPBF-ND - IC ADC 24BIT I2C 10-DFN
LTC2485IDD#PBF-ND - IC ADC 24BIT I2C 10-DFN
LTC2485CDD#PBF-ND - IC ADC 24BIT I2C 10-DFN
LTC2485
33
2485fc
APPLICATIONS INFORMATION
Figure 40. Input Normal Mode Rejection 2x Speed Mode
Figure 41. Input Normal Mode Rejection 2x Speed Mode
Figure 42. Input Normal Mode Rejection
vs Input Frequency, 2x Speed Mode and 50Hz/60Hz Mode
Figure 43. Input Normal Mode Rejection 2x Speed Mode
Figure 44. Calibration Setup
INPUT SIGNAL FREQUENCY (fN)
INPUT
NORMAL
REJECTION
(dB)
2485 F40
0
–20
–40
–60
–80
–100
–120
0
fN
2fN 3fN 4fN 5fN 6fN 7fN 8fN
INPUT SIGNAL FREQUENCY (fN)
INPUT
NORMAL
REJECTION
(dB)
2485 F41
0
–20
–40
–60
–80
–100
–120
250
248
252 254 256 258 260 262 264
INPUT FREQUENCY (Hz)
0
NORMAL
MODE
REJECTION
(dB)
50
100 125
225
2485 F42
25
75
150 175 200
0
–20
–40
–60
–80
–100
–120
VCC = 5V
VREF = 5V
VINCM = 2.5V
VIN(P-P) = 5V
TA = 25°C
MEASURED DATA
CALCULATED DATA
DIFFERENTIAL INPUT SIGNAL FREQUENCY (Hz)
48
–70
–80
–90
–100
–110
–120
–130
–140
54
58
2485 F43
50
52
56
60
62
NORMAL
MODE
REJECTION
(dB)
NO AVERAGE
WITH
RUNNING
AVERAGE
SCL
SDA
CA1
CA0/f0
6
7
9
10
VCC
5V
LTC2485
REF+
GND
IN
IN+
1
ISOTHERMAL
2
C7
0.1μF
1.7k
C8
1μF
4
R2
2k
R7
8k
6
2
5
4
R8
1k
5
2485 F44
26.3C
TYPE K
THERMOCOUPLE
JACK
(OMEGA MPJ-K-F)
8
3
REF
IN OUT
G1
NC1M4V0
TRIM
GND
LT1236
+
1.7k
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