If CS remains LOW longer than tEOCtest
參數(shù)資料
型號: LTC2442IG#TRPBF
廠商: Linear Technology
文件頁數(shù): 13/32頁
文件大?。?/td> 0K
描述: IC ADC 24BIT 250MSPS 36-SSOP
標(biāo)準(zhǔn)包裝: 2,000
位數(shù): 24
采樣率(每秒): 8k
數(shù)據(jù)接口: MICROWIRE?,串行,SPI?
轉(zhuǎn)換器數(shù)目: 1
功率耗散(最大): 50mW
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: 36-SSOP(0.209",5.30mm 寬)
供應(yīng)商設(shè)備封裝: 36-SSOP
包裝: 帶卷 (TR)
輸入數(shù)目和類型: 4 個(gè)單端,雙極;2 個(gè)差分,雙極
配用: DC979A-ND - BOARD DELTA SIGMA ADC LTC2442
LTC2442
20
2442fa
For more information www.linear.com/LTC2442
If CS remains LOW longer than tEOCtest, the first rising
edge of SCK will occur and the conversion result is serially
shifted out of the SDO pin. The data output cycle begins
on this first rising edge of SCK and concludes after the
32nd rising edge. Data is shifted out the SDO pin on each
falling edge of SCK. The internally generated serial clock
is output to the SCK pin. This signal may be used to shift
the conversion result into external circuitry. EOC can be
latched on the first rising edge of SCK and the last bit of
the conversion result on the 32nd rising edge of SCK.
After the 32nd rising edge, SDO goes HIGH (EOC = 1),
SCK stays HIGH and a new conversion starts.
Typically, CS remains LOW during the data output state.
However, the data output state may be aborted by pulling
CS HIGH anytime between the first and 32nd rising edge
of SCK, see Figure 8. On the rising edge of CS, the device
abortsthedataoutputstateandimmediatelyinitiatesanew
conversion. This is useful for systems not requiring all 32
bits of output data, aborting an invalid conversion cycle,
or synchronizing the start of a conversion. Thirteen serial
input data bits are required in order to properly program
the speed/resolution and input channel. If the data output
sequence is aborted prior to the 13th rising edge of SCK,
the new input data is ignored, and the previously selected
speed/resolution and channel are used for the next con-
version cycle. If a new channel is being programmed, the
rising edge of CS must come after the 14th falling edge of
SCK in order to store the data input sequence.
Figure 8. Internal Serial Clock, Reduced Data Output Length
CS
SCK
SDI
SDO
BUSY
2442 F08
CONVERSION
SLEEP
DATA OUTPUT
CONVERSION
MSB
BIT 28 BIT 27 BIT 26 BIT 25 BIT 24 BIT 23 BIT 22 BIT 21 BIT 20 BIT 19
BIT 0
SIG
BIT 29
“0”
BIT 30
EOC
BIT 31
1
0
EN
SGL
0
A0
OSR3 OSR2 OSR1 OSR0 TWOX
ODD
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
32
DON'T CARE
VCC
V+
+INA
MUXOUTA
BUSY
SDO
SDI
EXT
SCK
FO
MUXOUTB
+INB
GND
21
6
7
8
9
28
12
13
11
17
18
10
26
25
4, 5, 32
19
27
2
34
REFERENCE
VOLTAGE
0.1V TO VCC
ANALOG
INPUTS
24
= EXTERNAL OSCILLATOR
= INTERNAL OSCILLATOR
(SIMULTANEOUS 50Hz/60Hz
REJECTION AT 6.9Hz OUTPUT RATE
1F
0.1F
4.5V TO 5.5V
VCC TO 15V
LTC2442
1F
0.1F
CS
–15V TO GND
V
REF+
REF
OUTB
–INB
ADCINB
CH0
CH1
CH2
CH3
COM
29
30
31
3
33
1
36
35
OUTA
–INA
ADCINA
4-WIRE
SPI INTERFACE
VCC
applications inForMation
相關(guān)PDF資料
PDF描述
MS27467E15F18PA CONN PLUG 18POS STRAIGHT W/PINS
E4MRABAU CONN RCPT 4POS MALE RA PCB GOLD
E4MSTBAU CONN RCPT 4POS MALE GOLD PCB BLK
AD7720BRUZ-REEL7 IC MODULATOR SIGMA-DELTA 28TSSOP
AD7720BRUZ-REEL IC MODULATOR SIGMA-DELTA 28TSSOP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC2444CUHF 功能描述:IC ADC 24BIT HI SPEED 38QFN RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 位數(shù):16 采樣率(每秒):45k 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:2 功率耗散(最大):315mW 電壓電源:模擬和數(shù)字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC(0.295",7.50mm 寬) 供應(yīng)商設(shè)備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數(shù)目和類型:2 個(gè)單端,單極
LTC2444CUHF#PBF 功能描述:IC ADC 24BIT HI SPEED 38QFN RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 其它有關(guān)文件:TSA1204 View All Specifications 標(biāo)準(zhǔn)包裝:1 系列:- 位數(shù):12 采樣率(每秒):20M 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:2 功率耗散(最大):155mW 電壓電源:模擬和數(shù)字 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-TQFP 供應(yīng)商設(shè)備封裝:48-TQFP(7x7) 包裝:Digi-Reel® 輸入數(shù)目和類型:4 個(gè)單端,單極;2 個(gè)差分,單極 產(chǎn)品目錄頁面:1156 (CN2011-ZH PDF) 其它名稱:497-5435-6
LTC2444CUHF#TR 功能描述:IC ADC 24BIT HI SPEED 38QFN RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 位數(shù):16 采樣率(每秒):45k 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:2 功率耗散(最大):315mW 電壓電源:模擬和數(shù)字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC(0.295",7.50mm 寬) 供應(yīng)商設(shè)備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數(shù)目和類型:2 個(gè)單端,單極
LTC2444CUHF#TRPBF 功能描述:IC ADC 24BIT HI SPEED 38QFN RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 位數(shù):16 采樣率(每秒):45k 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:2 功率耗散(最大):315mW 電壓電源:模擬和數(shù)字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC(0.295",7.50mm 寬) 供應(yīng)商設(shè)備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數(shù)目和類型:2 個(gè)單端,單極
LTC2444IUHF 功能描述:IC ADC 24BIT HI SPEED 38QFN RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 位數(shù):16 采樣率(每秒):45k 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:2 功率耗散(最大):315mW 電壓電源:模擬和數(shù)字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC(0.295",7.50mm 寬) 供應(yīng)商設(shè)備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數(shù)目和類型:2 個(gè)單端,單極