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| 型号： | LTC2415IGN#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 18/40页 |
| 文件大小： | 0K |
| 描述： | IC A/D CONV 24BIT MICRPWR 16SSOP |
| 标准包装： | 100 |
| 位数： | 24 |
| 采样率（每秒）： | 15 |
| 数据接口： | MICROWIRE?，串行，SPI? |
| 转换器数目： | 2 |
| 功率耗散（最大）： | 1mW |
| 电压电源： | 单电源 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SSOP |
| 包装： | 管件 |
| 输入数目和类型： | 1 个差分，双极 |
| 产品目录页面： | 1348 (CN2011-ZH PDF) |
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LTC2415/LTC2415-1
25
sn2415 24151fs
APPLICATIO S I FOR ATIO
WU
U
Figure 15. CS Capacitance vs tSAMPLE
Figure 16. CS Capacitance vs Output Rate
Figure 17. CS Capacitance vs Supply Current
CAPACITANCE ON CS (pF)
1
5
6
7
1000
10000
2415 F15
4
3
10
100
100000
2
1
0
t SAMPLE
(SEC)
VCC = 5V
VCC = 3V
CAPACITANCE ON CS (pF)
0
SAMPLE
RATE
(Hz)
3
4
5
1000
100000
2415 F16
2
1
0
10
100
10000
6
7
8
VCC = 5V
VCC = 3V
CAPACITANCE ON CS (pF)
1
0
SUPPLY
CURRENT
(
A
RMS
)
50
100
150
200
250
300
10
100
1000
10000
2415 F17
100000
VCC = 5V
VCC = 3V
66.6ms and the conversion time of the LTC2413 is 146ms,
while the LTC2415-1 is 73ms. In systems where the SDO
pin is monitored for the end-of-conversion signal (SDO
goes low once the conversion is complete) these two
devices can be interchanged. In cases where SDO is not
monitored, a wait state is inserted between conversions,
the duration of this wait state must be greater than 66.6ms
for the LTC2415, greater than 133ms for the LTC2410,
greater than 146ms for the LTC2413 and greater than
73ms for the LTC2415-1.
PRESERVING THE CONVERTER ACCURACY
The LTC2415/LTC2415-1 are designed to reduce as much
as possible conversion result sensitivity to device
decoupling, PCB layout, antialiasing circuits, line fre-
quency perturbations and so on. Nevertheless, in order to
preserve the extreme accuracy capability of this part,
some simple precautions are desirable.
Digital Signal Levels
The LTC2415/LTC2415-1 digital interface is easy to use.
Its digital inputs (FO, CS and SCK in External SCK mode of
operation) accept standard TTL/CMOS logic levels and the
internal hysteresis receivers can tolerate edge rates as slow
as 100
s. However, some considerations are required to
take advantage of the exceptional accuracy and low supply
current of this converter.
The digital output signals (SDO and SCK in Internal SCK
mode of operation) are less of a concern because they are
not generally active during conversion.
While a digital input signal is in the range 0.5V to
(VCC – 0.5V), the CMOS input receiver draws additional
current from the power supply. It should be noted that,
when any one of the digital input signals (FO, CS and SCK
in External SCK mode of operation) is within this range, the
LTC2415/LTC2415-1 power supply current may increase
even if the signal in question is at a valid logic level. For
micropower operation, it is recommended to drive all
digital input signals to full CMOS levels [VIL < 0.4V and
VOH > (VCC – 0.4V)].
During the conversion period, the undershoot and/or
overshoot of a fast digital signal connected to the LTC2415/
Timing Compatibility with the LTC2410/LTC2413
All timing modes described above are identical with re-
spect to the LTC2410/LTC2413 and LTC2415/LTC2415-1,
with one exception. The conversion time of the LTC2410
is 133ms while the conversion time of the LTC2415 is
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| LTC2418CGN#PBF | 功能描述:IC ADC 24BIT DIFF INPUT 28SSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1 系列:microPOWER™ 位数:8 采样率（每秒）:1M 数据接口:串行，SPI? 转换器数目:1 功率耗散（最大）:- 电压电源:模拟和数字 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:24-VFQFN 裸露焊盘 供应商设备封装:24-VQFN 裸露焊盘（4x4） 包装:Digi-Reel® 输入数目和类型:8 个单端，单极 产品目录页面:892 (CN2011-ZH PDF) 其它名称:296-25851-6 |
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