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參數(shù)資料
| 型號(hào)： | LTC2453IDDBTRMPBF |
| 廠商： | Linear Technology Corporation |
| 英文描述： | Easy-to-Use, Ultra-Tiny, Differential, 16-Bit ADC With I2C Interface |
| 中文描述： | 易于使用，超微型，差分，16位ADC，帶有I2C接口 |
| 文件頁(yè)數(shù)： | 6/16頁(yè) |
| 文件大?。?/td> | 223K |
| 代理商： | LTC2453IDDBTRMPBF |
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LTC2453
6
2453f
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 V
CC
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
(V
REF
= REF
+
to REF
–
) sets the full-scale range.
V
CC
(Pin 4):
Positive Supply Voltage. Bypass to GND
(Pin 1) with a 10μF capacitor in parallel with a low-se-
ries-inductance 0.1μF 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 I
2
C Interface. The
LTC2453 can only act as a slave and the SCL pin only
accepts 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 I
2
C
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 V
CC
).
Exposed Pad (Pin 9):
Ground. Must be soldered to PCB
ground.
16-BIT
ΔΣ
A/D CONVERTER
DECIMATING
SINC FILTER
SCL
REF
+
V
CC
REF
–
IN
+
IN
–
GND
SDA
2453 BD
–
16-BIT
ΔΣ
A/D CONVERTER
I
2
C
INTERFACE
INTERNAL
OSCILLATOR
3
4
7
8
1
2
6
5
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