參數(shù)資料
型號: LTC2413CGN#TR
廠商: Linear Technology
文件頁數(shù): 29/44頁
文件大?。?/td> 0K
描述: IC ADC 24BIT 50/60HZ MPWR 16SSOP
標(biāo)準(zhǔn)包裝: 2,500
位數(shù): 24
采樣率(每秒): 6.8
數(shù)據(jù)接口: MICROWIRE?,串行,SPI?
轉(zhuǎn)換器數(shù)目: 2
功率耗散(最大): 1mW
電壓電源: 單電源
工作溫度: 0°C ~ 70°C
安裝類型: 表面貼裝
封裝/外殼: 16-SSOP(0.154",3.90mm 寬)
供應(yīng)商設(shè)備封裝: 16-SSOP
包裝: 帶卷 (TR)
輸入數(shù)目和類型: 1 個差分,雙極
LTC2413
35
sn2413 2413fs
APPLICATIO S I FOR ATIO
WU
U
Figure 42. Measured Input Normal Mode Rejection vs Input
Frequency with Input Perturbation of 150% of Full Scale
INPUT FREQUENCY (Hz)
0
NORMAL
MODE
REJECTION
(dB)
2413 F42
0
–20
–40
–60
–80
–100
–120
VCC = 5V
REF+ = 5V
REF = GND
VINCM = 2.5V
TA = 25°C
VIN(P-P) = 5V
VIN(P-P) = 7.5V
(150% OF FULL SCALE)
20
40
60
80
100
120
140
160
180
200
220
range of 5V peak-to-peak. Figure 42 shows measurement
results for the LTC2413 normal mode rejection ratio with
a 7.5V peak-to-peak (150% of full scale) input signal su-
perimposed over the more traditional normal mode rejec-
tion ratio results obtained with a 5V peak-to-peak (full
scale) input signal. It is clear that the LTC2413 rejection
performance is maintained with no compromises in this
extreme situation. When operating with large input signal
levels, the user must observe that such signals do not
violate the device’s absolute maximum ratings.
BRIDGE APPLICATIONS
Typical strain gauge based bridges deliver only 2mV/Volt
of excitation. As the maximum reference voltage of the
LTC2413 is 5V, remote sensing of applied excitation
without additional circuitry requires that excitation be
limited to 5V. This gives only 10mV full scale, which can
be resolved to 1 part in 10000 without averaging. For many
solid state sensors, this is still better than the sensor. For
example, averaging 64 samples however reduces the
noise level by a factor of eight, bringing the resolving
power to 1 part in 80000, comparable to better weighing
systems. Hysteresis and creep effects in the load cells are
typically much greater than this. Most applications that
require strain measurements to this level of accuracy are
measuring slowly changing phenomena, hence the time
required to average a large number of readings is usually
not an issue. For those systems that require accurate
measurement of a small incremental change on a signifi-
cant tare weight, the lack of history effects in the LTC2400
family is of great benefit.
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