參數(shù)資料
型號(hào)： LTC2414CGN
廠商： LINEAR TECHNOLOGY CORP
元件分類(lèi)： ADC
英文描述： 8-/16-Channel 24-Bit No Latency TM ADCs
中文描述： 8-CH 24-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO28
封裝： 0.150 INCH, PLASTIC, SSOP-28
文件頁(yè)數(shù)： 12/48頁(yè)
文件大?。?/td> 775K
代理商： LTC2414CGN
LTC2414/LTC2418
12
241418fa
first rising edge of SCK and depending on the control bits,
the converter updates its channel selection immediately
and is valid for the next conversion. The details of channel
selection control bits are described in the Input Data Mode
section. The output data is shifted out the SDO pin under
the control of the serial clock (SCK). The output data is
updated on the falling edge of SCK allowing the user to
reliably latch data on the rising edge of SCK (see Figure 3).
The data output state is concluded once 32 bits are read
out of the ADC or when CS is brought HIGH. The device
automatically initiates a new conversion and the cycle
repeats.
Through timing control of the CS and SCK pins, the
LTC2414/LTC2418 offer several flexible modes of opera-
tion (internal or external SCK and free-running conversion
modes). These various modes do not require program-
ming configuration registers; moreover, they do not dis-
turb the cyclic operation described above. These modes of
operation are described in detail in the Serial Interface
Timing Modes section.
Conversion Clock
A major advantage the delta-sigma converter offers over
conventional type converters is an on-chip digital filter
(commonly implemented as a Sinc or Comb filter). For
high resolution, low frequency applications, this filter is
typically designed to reject line frequencies of 50Hz or
APPLICATIU
W
U
U
Figure 2. LTC2414/LTC2418 State Transition Diagram
CONVERT
POWER UP
IN
+
= CH0, IN
–
= CH1
SLEEP
DATA OUTPUT
ADDRESS INPUT
241418 F02
TRUE
FALSE
CS = LOW
AND
SCK
60Hz plus their harmonics. The filter rejection perfor-
mance is directly related to the accuracy of the converter
system clock. The LTC2414/LTC2418 incorporate a highly
accurate on-chip oscillator. This eliminates the need for
external frequency setting components such as crystals or
oscillators. Clocked by the on-chip oscillator, the
LTC2414/
LTC2418
achieve a minimum of 110dB rejection at the line
frequency (50Hz or 60Hz
±
2%).
Ease of Use
The LTC2414/LTC2418 data output has no latency, filter
settling delay or redundant data associated with the
conversion cycle. There is a one-to-one correspondence
between the conversion and the output data. Therefore,
multiplexing multiple analog voltages is easy.
The LTC2414/LTC2418 perform offset and full-scale cali-
brations in every conversion cycle. This calibration is trans-
parent to the user and has no effect on the cyclic operation
described above. The advantage of continuous calibration
is extreme stability of offset and full-scale readings with re-
spect to time, supply voltage change and temperature drift.
Power-Up Sequence
The LTC2414/LTC2418 automatically enter an internal
reset state when the power supply voltage V
CC
drops
below approximately 2V. This feature guarantees the
integrity of the conversion result and of the serial interface
mode selection. (See the 3-wire I/O sections in the Serial
Interface Timing Modes section.)
When the V
CC
voltage rises above this critical threshold,
the converter creates an internal power-on-reset (POR)
signal with a typical duration of 1ms. The POR signal
clears all internal registers. Following the POR signal, the
LTC2414/LTC2418 start a normal conversion cycle and
follow the succession of states described above. The first
conversion result following POR is accurate within the
specifications of the device if the power supply voltage is
restored within the operating range (2.7V to 5.5V) before
the end of the POR time interval.
Reference Voltage Range
The LTC2414/LTC2418 accept a truly differential external
reference voltage. The absolute/common mode voltage
相關(guān)PDF資料
PDF描述
LTC2414IGN 8-/16-Channel 24-Bit No Latency TM ADCs
LTC2418CGN 8-/16-Channel 24-Bit No Latency TM ADCs
LTC2418IGN 8-/16-Channel 24-Bit No Latency TM ADCs
LTC2415-1CGN 24-Bit No Latency ADCs with Differential Input and Differential Reference
LTC2415-1IGN 24-Bit No Latency ADCs with Differential Input and Differential Reference
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC2414CGN#PBF 功能描述:IC ADC 8CH 24BIT DIFFINPUT28SSOP RoHS:是 類(lèi)別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)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(zhuǎn)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(lèi)型:表面貼裝 封裝/外殼:24-VFQFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:24-VQFN 裸露焊盤(pán)（4x4） 包裝:Digi-Reel® 輸入數(shù)目和類(lèi)型:8 個(gè)單端，單極 產(chǎn)品目錄頁(yè)面:892 (CN2011-ZH PDF) 其它名稱(chēng):296-25851-6
LTC2414CGN#PBF 制造商:Linear Technology 功能描述:IC ADC 24BIT SSOP-28
LTC2414CGN#TR 功能描述:IC ADC 8CH 24BIT DIFFINPUT28SSOP RoHS:否 類(lèi)別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)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(zhuǎn)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(lèi)型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數(shù)目和類(lèi)型:2 個(gè)單端，單極
LTC2414CGN#TRPBF 功能描述:IC ADC 8CH 24BIT DIFFINPUT28SSOP RoHS:是 類(lèi)別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)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(zhuǎn)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(lèi)型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數(shù)目和類(lèi)型:2 個(gè)單端，單極
LTC2414CGNPBF 制造商:Linear Technology 功能描述:ADC,LTC2414C 24bit D-S 8 ch SPI SSOP
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