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參數(shù)資料
| 型號： | LTC2418CGN |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | ADC |
| 英文描述： | 8-/16-Channel 24-Bit No Latency TM ADCs |
| 中文描述： | 16-CH 24-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO28 |
| 封裝： | 0.150 INCH, PLASTIC, SSOP-28 |
| 文件頁數(shù)： | 24/48頁 |
| 文件大?。?/td> | 775K |
| 代理商： | LTC2418CGN |
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LTC2414/LTC2418
24
241418fa
complete, SCK and SDO go LOW (EOC = 0) indicating the
conversion has finished and the device has entered the
low power sleep state. The part remains in the sleep state
a minimum amount of time (1/2 the internal SCK period)
then immediately begins outputting data. The data input/
output cycle begins on the first rising edge of SCK and
ends after the 32nd rising edge. The input data is then
shifted in via the SDI pin on the rising edge of SCK
(including the first rising edge) and the output data is
shifted out of the SDO pin on each falling edge of SCK.
The internally generated serial clock is output to the SCK
pin. This signal may be used to shift the conversion result
into external circuitry. EOC can be latched on the first
rising edge of SCK and the last bit of the conversion result
can be latched on the 32nd rising edge of SCK. After the
32nd rising edge, SDO goes HIGH (EOC = 1) indicating a
new conversion is in progress. SCK remains HIGH during
the conversion.
PRESERVING THE CONVERTER ACCURACY
The LTC2414/LTC2418 are designed to reduce as much as
possible the 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 LTC2414/LTC2418’s digital interface is easy to use.
Its digital inputs (SDI, F
O
, 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
μ
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 the conversion state.
While a digital input signal is in the range 0.5V to
(V
CC
– 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 (SDI, F
O
, CS and
SCK in External SCK mode of operation) is within this
range, the power supply current may increase even if the
signal in question is at a valid logic level. For micropower
APPLICATIOU
W
U
U
Figure 10. Internal Serial Clock, CS = 0 Continuous Operation
(1)
(0)
EN
SGL
A2
A1
A0
ODD/
SIGN
SDI
DON’T CARE
DON’T CARE
SDO
SCK
(INTERNAL)
CS
LSB
MSB
SIG
BIT 6
BIT 0
PARITY
BIT 27
BIT 26
BIT 25
BIT 24
BIT 28
BIT 29
BIT 30
EOC
BIT 31
DATA OUTPUT
CONVERSION
CONVERSION
241418 F10
V
CC
F
O
REF
+
REF
–
CH0
CH7
CH8
CH15
COM
SCK
SDI
SDO
CS
GND
9
19
11
12
21
28
1
8
10
18
17
15
16
20
REFERENCE
VOLTAGE
0.1V TO V
CC
ANALOG
INPUTS
= 50Hz REJECTION
= EXTERNAL OSCILLATOR
= 60Hz REJECTION
V
CC
1
μ
F
2.7V TO 5.5V
LTC2414/
LTC2418
3-WIRE
SPI INTERFACE
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相關代理商/技術參數(shù) |
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| LTC2418CGN#PBF | 功能描述:IC ADC 24BIT DIFF INPUT 28SSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉換器 系列:- 標準包裝:1 系列:microPOWER™ 位數(shù):8 采樣率（每秒）:1M 數(shù)據(jù)接口:串行，SPI? 轉換器數(shù)目:1 功率耗散（最大）:- 電壓電源:模擬和數(shù)字 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:24-VFQFN 裸露焊盤 供應商設備封裝:24-VQFN 裸露焊盤（4x4） 包裝:Digi-Reel® 輸入數(shù)目和類型:8 個單端，單極 產品目錄頁面:892 (CN2011-ZH PDF) 其它名稱:296-25851-6 |
| LTC2418CGN#PBF | 制造商:Linear Technology 功能描述:IC ADC 24BIT SSOP-28 |
| LTC2418CGN#TR | 功能描述:IC ADC 24BIT DIFF INPUT 28SSOP RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉換器 系列:- 標準包裝:1,000 系列:- 位數(shù):16 采樣率（每秒）:45k 數(shù)據(jù)接口:串行 轉換器數(shù)目:2 功率耗散（最大）:315mW 電壓電源:模擬和數(shù)字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數(shù)目和類型:2 個單端，單極 |
| LTC2418CGN#TRPBF | 功能描述:IC ADC 24BIT DIFF INPUT 28SSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉換器 系列:- 標準包裝:1,000 系列:- 位數(shù):16 采樣率（每秒）:45k 數(shù)據(jù)接口:串行 轉換器數(shù)目:2 功率耗散（最大）:315mW 電壓電源:模擬和數(shù)字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數(shù)目和類型:2 個單端，單極 |
| LTC2418CGNPBF | 制造商:Linear Technology 功能描述:ADC,LTC2418C 24bit D-S 16 ch SPI SSOP |
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