參數(shù)資料
型號: LTC2440IGN#TR
廠商: Linear Technology
文件頁數(shù): 28/28頁
文件大?。?/td> 0K
描述: IC CONV A/D 24-BIT DIFF 16-SSOP
標(biāo)準(zhǔn)包裝: 2,500
位數(shù): 24
采樣率(每秒): 3.5k
數(shù)據(jù)接口: MICROWIRE?,串行,SPI?
轉(zhuǎn)換器數(shù)目: 2
功率耗散(最大): 40mW
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: 帶卷 (TR)
輸入數(shù)目和類型: 1 個(gè)差分,雙極
配用: DC570A-ND - BOARD DELTA SIGMA ADC LTC2440
LTC2440
9
2440fd
FUNCTIONAL BLOCK DIAGRAM
TEST CIRCUITS
APPLICATIONS INFORMATION
Figure 1. Functional Block Diagram
Figure 2. LTC2440 State Transition Diagram
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,
operation cycle and data out format is compatible with
the LTC2410.
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
CONVERT
SLEEP
DATA OUTPUT
2440 F02
TRUE
FALSE
CS = LOW
AND
SCK
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