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LTC2440IGN датащи(PDF) 9 Page - Linear Technology

номер детали LTC2440IGN
подробное описание детали  24-Bit High Speed Differential delta-sigma ADC with Selectable Speed/Resolution
PDF  28 Pages
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производитель  LINER [Linear Technology]
домашняя страница  http://www.linear.com
Logo LINER - Linear Technology

LTC2440IGN датащи(HTML) 9 Page - Linear Technology

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LTC2440
9
sn2440, 2440fas
TEST CIRCUITS
FU CTIO AL BLOCK DIAGRA
Figure 1. Functional Block Diagram
AUTOCALIBRATION
AND CONTROL
DAC
DECIMATING FIR
INTERNAL
OSCILLATOR
SERIAL
INTERFACE
ADC
∑
∫
∫
∫
GND
VCC
IN+
IN–
SDO
SCK
REF+
REF –
CS
SDI
BUSY
EXT
FO
(INT/EXT)
2440 F01
–+
+
–
1.69k
SDO
2440 TA03
Hi-Z TO VOH
VOL TO VOH
VOH TO Hi-Z
CLOAD = 20pF
1.69k
SDO
2440 TA04
Hi-Z TO VOL
VOH TO VOL
VOL TO Hi-Z
CLOAD = 20pF
VCC
APPLICATIO S I FOR ATIO
CONVERTER OPERATION
Converter Operation Cycle
The LTC2440 is a high speed, delta-sigma analog-to-
digital converter with an easy to use 4-wire serial interface
(see Figure 1). Its operation is made up of three states. The
converter operating cycle begins with the conversion,
followed by the low power sleep state and ends with the
data output (see Figure 2). The 4-wire interface consists
of serial data input (SDI), serial data output (SDO), serial
clock (SCK) and chip select (CS). The interface, timing,
Figure 2. LTC2440 State Transition Diagram
CONVERT
SLEEP
DATA OUTPUT
2440 F02
TRUE
FALSE
CS = LOW
AND
SCK



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