REF
參數(shù)資料
型號: LTC2453CDDB#TRPBF
廠商: Linear Technology
文件頁數(shù): 15/18頁
文件大小: 0K
描述: IC ADC 16BIT DELTA SIG 8-DFN
標(biāo)準(zhǔn)包裝: 2,500
位數(shù): 16
采樣率(每秒): 60
數(shù)據(jù)接口: I²C,串行
轉(zhuǎn)換器數(shù)目: 2
功率耗散(最大): 4mW
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: 8-WFDFN 裸露焊盤
供應(yīng)商設(shè)備封裝: 8-DFN(3x2)
包裝: 帶卷 (TR)
輸入數(shù)目和類型: 1 個差分,雙極
配用: DC1266A-A-ND - BOARD DELTA SIGMA ADC LTC2453
LTC2453
6
2453fc
BLOCK DIAGRAM
PIN FUNCTIONS
GND (Pin 1): Ground. Connect to a ground plane through
a low impedance connection.
REF(Pin 2), REF+ (Pin 3): Differential Reference Input.
The voltage on these pins can have any value between
GND and VCC as long as the reference positive input, REF+,
remains more positive than the negative reference input,
REF, by at least 2.5V. The differential reference voltage
(VREF = REF+ to REF) sets the full-scale range.
VCC (Pin 4): Positive Supply Voltage. Bypass to GND
(Pin 1) with a 10F capacitor in parallel with a low-series-
inductance 0.1F capacitor located as close to the part as
possible.
IN(Pin 5), IN+ (Pin 6): Differential Analog Input.
SCL (Pin 7): Serial Clock Input of the I2C Interface. The
LTC2453 can only act as a slave and the SCL pin only ac-
cepts external serial clock. Data is shifted into the SDA pin
on the rising edges of SCL and output through the SDA
pin on the falling edges of SCL.
SDA (Pin 8): Bidirectional Serial Data Line of the I2C
Interface. The conversion result is output through the
SDA pin. The pin is high impedance unless the LTC2453
is in the data output mode. While the LTC2453 is in the
data output mode, SDA is an open drain pull down (which
requires an external 1.7k pull-up resistor to VCC).
ExposedPad(Pin9,DFNOnly):Ground.Mustbesoldered
to PCB ground.
16-BIT ∑
A/D CONVERTER
DECIMATING
SINC FILTER
SCL
REF+
VCC
REF
IN+
IN
GND
SDA
2453 BD
16-BIT ∑
A/D CONVERTER
I2C
INTERFACE
INTERNAL
OSCILLATOR
3
4
7
8
1
2
6
5
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