參數(shù)資料
型號(hào)： LTC2415IGN
廠商： Linear Technology
文件頁(yè)數(shù)： 4/40頁(yè)
文件大?。?/td> 0K
描述： IC A/D CONV 24BIT MICRPWR 16SSOP
標(biāo)準(zhǔn)包裝： 100
位數(shù)： 24
采樣率（每秒）： 15
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： -40°C ~ 85°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： 管件
輸入數(shù)目和類型： 1 個(gè)差分，雙極
LTC2415/LTC2415-1
12
sn2415 24151fs
APPLICATIO S I FOR ATIO
WU
U
Figure 2. LTC2415 State Transition Diagram
CONVERTER OPERATION
Converter Operation Cycle
The LTC2415/LTC2415-1 are low power, delta-sigma ana-
log-to-digital converters with an easy to use 3-wire serial
interface (see Figure 1). Their operation is made up of
three states. The converter operating cycle begins with the
conversion, followed by the sleep state and ends with the
data output (see Figure 2). The 3-wire interface consists of
serial data output (SDO), serial clock (SCK) and chip select
(CS).
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
LTC2415/LTC2415-1 offer several flexible modes of op-
eration (internal or external SCK and free-running conver-
sion modes). These various modes do not require pro-
gramming configuration registers; moreover, they do not
disturb 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
60Hz plus their harmonics. The filter rejection perfor-
mance is directly related to the accuracy of the converter
system clock. The LTC2415/LTC2415-1 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 LTC2415 achieves a minimum of 110dB rejection at
the line frequency (50Hz or 60Hz
±2%), while the
LTC2415-1 achieves a minimum of 87db rejection at 50Hz
±2% and 60Hz ±2% simultaneously.
Ease of Use
The LTC2415/LTC2415-1 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.
CONVERT
SLEEP
DATA OUTPUT
2415 F02
TRUE
FALSE
CS = LOW
AND
SCK
Initially, the LTC2415/LTC2415-1 perform a conversion.
Once the conversion is complete, the device enters the
sleep state. While in this sleep state, power consumption
is reduced by an order of magnitude if CS is HIGH. The part
remains in the sleep state as long as CS is HIGH. The
conversion result is held indefinitely in a static shift
register while the converter is in the sleep state.
Once CS is pulled LOW, the device begins outputting the
conversion result. There is no latency in the conversion
result. The data output corresponds to the conversion just
performed. This result is shifted out on the serial data out
pin (SDO) under the control of the serial clock (SCK). Data
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參數(shù)描述
LTC2415IGN#PBF 功能描述:IC A/D CONV 24BIT MICRPWR 16SSOP RoHS:是 類別: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 安裝類型:表面貼裝 封裝/外殼:24-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:24-VQFN 裸露焊盤（4x4） 包裝:Digi-Reel® 輸入數(shù)目和類型:8 個(gè)單端，單極 產(chǎn)品目錄頁(yè)面:892 (CN2011-ZH PDF) 其它名稱:296-25851-6
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LTC2415IGN#TRPBF 功能描述:IC A/D CONV 24BIT MICRPWR 16SSOP RoHS:是 類別: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)目和類型:2 個(gè)單端，單極
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