參數(shù)資料
型號(hào): LTC2496CUHF#TRPBF
廠商: Linear Technology
文件頁(yè)數(shù): 9/32頁(yè)
文件大?。?/td> 0K
描述: IC ADC 16BIT DELTA SIG 38-QFN
標(biāo)準(zhǔn)包裝: 2,500
位數(shù): 16
采樣率(每秒): 6.9
數(shù)據(jù)接口: MICROWIRE?,串行,SPI?
轉(zhuǎn)換器數(shù)目: 1
功率耗散(最大): 800µW
電壓電源: 單電源
工作溫度: 0°C ~ 70°C
安裝類(lèi)型: 表面貼裝
封裝/外殼: 38-WFQFN 裸露焊盤(pán)
供應(yīng)商設(shè)備封裝: 38-QFN(5x7)
包裝: 帶卷 (TR)
輸入數(shù)目和類(lèi)型: 16 個(gè)單端,雙極;8 個(gè)差分,雙極
配用: DC1011A-B-ND - BOARD DELTA SIGMA ADC LTC2496
LTC2496
2496fb
Table 4. Serial Interface Timing Modes
CONFIGURATION
SCK
SOURCE
CONVERSION
CYCLE CONTROL
DATA OUTPUT
CONTROL
CONNECTION AND
WAVEFORMS
External SCK, Single Cycle
Conversion
External
CS and SCK
Figures 4, 5
External SCK, 3-Wire I/O
External
SCK
Figure 6
Internal SCK, Single Cycle
Conversion
Internal
CS
CS
Figures 7, 8
Internal SCK, 3-Wire I/O,
Continuous Conversion
Internal
Continuous
Internal
Figure 9
applicaTions inForMaTion
External Serial Clock, Single Cycle Operation
This timing mode uses an external serial clock to shift out
the conversion result and CS to monitor and control the
state of the conversion cycle, see Figure 4.
Theexternalserialclockmodeisselectedduringthepower-
up sequence and on each falling edge of CS. In order to
enter and remain in the external SCK mode of operation,
SCK must be driven LOW both at power up and on each
CS falling edge. If SCK is HIGH on the falling edge of CS,
the device will switch to the internal SCK mode.
The serial data output pin (SDO) is Hi-Z as long as CS is
HIGH. At any time during the conversion cycle, CS may be
pulled LOW in order to monitor the state of the converter.
While CS is LOW, EOC is output to the SDO pin.
EOC = 1 while a conversion is in progress and EOC = 0 if
the conversion is complete and the device is in the sleep
state. Independent of CS, the device automatically enters
the sleep state once the conversion is complete; however,
in order to reduce the power, CS must be HIGH.
10F
0.1F
2.7V TO 5.5V
Hi-Z
2496 F04
CS
SCK
(EXTERNAL)
SDI
SDO
CONVERSION
SLEEP
DATA INPUT/OUTPUT
CONVERSION
VCC
fO
REF+
REF
CH0
CH7
CH8
CH15
COM
SCK
SDI
SDO
CS
GND
28
35
29
30
8
15
16
23
7
38
37
1,3,4,5,6,31,32,33,39
36
34
REFERENCE
VOLTAGE
0.1V TO VCC
ANALOG
INPUTS
= EXTERNAL OSCILLATOR
= INTERNAL OSCILLATOR
LTC2496
4-WIRE
SPI INTERFACE
EOC
1
2
3
4
5
6
7
8
9
19
20
21
22
23
24
1
0
EN
SGL
A2
A1
A0
ODD
DON'T CARE
MSB
SIG
“0”
LSB
BIT 23 BIT 22 BIT 21 BIT 20 BIT 19 BIT 18 BIT 17 BIT 16 BIT 15
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
Figure 4. External Serial Clock, Single Cycle Operation
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