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參數(shù)資料
| 型號： | LTC2442CG#PBF |
| 廠商： | Linear Technology |
| 文件頁數(shù)： | 30/32頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC 24BIT 4CH 36-SSOP |
| 標準包裝： | 37 |
| 位數(shù)： | 24 |
| 采樣率（每秒）： | 8k |
| 數(shù)據(jù)接口： | MICROWIRE?，串行，SPI? |
| 轉(zhuǎn)換器數(shù)目： | 1 |
| 功率耗散（最大）： | 50mW |
| 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： | 36-SSOP（0.209"，5.30mm 寬） |
| 供應商設備封裝： | 36-SSOP |
| 包裝： | 管件 |
| 輸入數(shù)目和類型： | 4 個單端，雙極；2 個差分，雙極 |
| 產(chǎn)品目錄頁面： | 1348 (CN2011-ZH PDF) |
| 配用： | DC979A-ND - BOARD DELTA SIGMA ADC LTC2442 |
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LTC2442
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2442fa
For more information www.linear.com/LTC2442
SCK(Pin1):BidirectionalDigitalClockPin.Ininternalserial
clock operation mode, SCK is used as a digital output for
the internal serial interface clock during the data output
period. In the external serial clock operation mode, SCK
is used as the digital input for the external serial interface
clock during the data output period. The serial clock op-
eration mode is determined by the logic level applied to
EXT (Pin 3).
BUSY (Pin 2): Conversion in Progress Indicator. This pin
is HIGH while the conversion is in progress and goes LOW
indicating the conversion is complete and data is ready.
It remains LOW during the sleep and data output states.
At the conclusion of the data output state, it goes HIGH
indicating a new conversion has begun.
EXT (Pin 3): Internal/External SCK Selection Pin. This pin
is used to select internal or external SCK for outputting/
inputting data. If EXT is tied low, the device is in the
external SCK mode and data is shifted out of the device
under the control of a user applied serial clock. If EXT is
tied high, the internal serial clock mode is selected. The
device generates its own SCK signal and outputs this on
the SCK pin. A framing signal BUSY (Pin 2) goes low
indicating data is being output.
GND (Pins 4, 5, 32): Ground. Multiple ground pins inter-
nally connected for optimum ground current flow and VCC
decoupling. Connect each one of these pins to a common
groundplanethroughalowimpedanceconnection.Allthree
pins must be connected to ground for proper operation.
CH0 to CH3 (Pins 6, 7, 8, 9): Analog Inputs. May be
programmed for single-ended or differential mode. (See
Table 3)
ADCINB (Pin 10): ADC Input. Must tie to the amplifier
output, OUTB (Pin 17).
ADCINA (Pin 11): ADC Input. Must tie to the amplifier
output, OUTA (Pin 12).
OUTA (Pin 12): Amplifier A output. Must be compensated
with 0.1F or greater capacitor. Drives the ADCINA ADC
input (Pin 11).
–INA (Pin 13): Amplifier A negative Input. By shorting this
pin to OUTA (Pin 12) the amplifier becomes a buffer with
unity gain. Alternatively, an external resistor network may
be added here for gains greater than 1.
NC (Pins 14, 15, 16, 20, 22, 23): No Connect. These pins
should be left floating or tied to Ground.
OUTB (Pin 17): Amplifier B Output. Must be compensated
with 0.1F or greater capacitor. Drives the ADCINB ADC
input (Pin 10).
–INB (Pin 18): Amplifier B negative Input. By shorting this
pin to OUTB (Pin 17) the amplifier becomes a buffer with
unity gain. Alternatively, an external resistor network may
be added here for gains greater than 1.
+INB (Pin 19): Amplifier B positive Input. Must tie to the
Multiplexer output MUXOUTB (Pin 26).
V+ (Pin 21): Amplifier positive supply voltage input. May
tie to VCC or an external supply voltage up to 15V. Bypass
to GND with 1F capacitor.
V– (Pin 24): Amplifier Negative supply voltage input. May
tie to GND or an external supply voltage as low as –15V.
Bypass to GND with a 1F capacitor.
+INA (Pin 25): Amplifier A positive Input. Must tie to the
Multiplexer output MUXOUTA (Pin 27).
MUXOUTB (Pin 26): Multiplexer Output. Must tie to +INB
amplifier input (Pin 19).
MUXOUTA (Pin 27): Multiplexer Output. Must tie to +INA
amplifier input (Pin 25).
COM (Pin 28): The common negative input (SEL–) for all
single ended multiplexer configurations. The voltage on
CH0-CH3 and COM pins can have any value between GND
–0.3V to VCC +0.3V. Within these limits, the two selected
inputs (SEL+ and SEL–) provide a bipolar input range (VIN
= SEL+ – SEL–) from –0.5 VREF to 0.5 VREF. Outside
thisinputrange,theconverterproducesuniqueover-range
and under-range output codes.
pin Functions
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| LTC2442IG#PBF | 功能描述:IC ADC 24BIT 4CH 36-SSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標準包裝:1,000 系列:- 位數(shù):12 采樣率（每秒）:300k 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:75mW 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:24-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:24-SOIC 包裝:帶卷 (TR) 輸入數(shù)目和類型:1 個單端，單極；1 個單端，雙極 |
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