- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄377771 > LTC2493IDETRPBF (Linear Technology Corporation) 24-Bit 2-/4-Channel ADC with Easy Drive Input Current Cancellation and I2C Interface PDF資料下載
參數(shù)資料
| 型號： | LTC2493IDETRPBF |
| 廠商： | Linear Technology Corporation |
| 英文描述： | 24-Bit 2-/4-Channel ADC with Easy Drive Input Current Cancellation and I2C Interface |
| 中文描述： | 24位2-/4-Channel ADC，具有易于驅(qū)動的輸入電流取消和I2C接口 |
| 文件頁數(shù)： | 22/32頁 |
| 文件大?。?/td> | 588K |
| 代理商： | LTC2493IDETRPBF |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁當前第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁
LTC2493
2493fa
Figure 11. Equivalent Analog Input Circuit
I IN
I IN
V
V
R
AVG
)
:
AVG
IN CM
(
REF CM
(
EQ
V
+
)
=
)
=
–
)
)
.5
I REF
where
V
V
R
AVG
REF
REF CM
0 5
.
IN CM
(
+
≈
+
(
)
1 5
.
–
(
)
)
EQ
IN
REF
V
EQ
REF
V
REF CM
V
V
R
REF
REF
–
(
2
=
+
)
–
2
,
=
=
+
+
REF
REF
V
IN
IN
WHEREIN AN
2
IN
DIN ARE THE SELECTEDINPUT CHANNELS
V
IN
IN CM
(
+
=
)
–
.
IN
R
R
M INTERNAL OSCILLATOR
2 71
2.98M INTERNAL OSCILLATOR50Hz/60
(
EQ
EQ
=
R
EQ
=
6
0HzMODE
Hz MODE
0.833 10
/f
EXTERNAL OSCIL
12
EOSC
=
)
LATOR
IN+
IN
–
10k
INTERNAL
SWITCH
NETWORK
10k
C
EQ
12
μ
F
10k
I
IN–
REF
+
I
REF+
I
IN+
I
REF–
2493 F11a
SWITCHING FREQUENCY
f
SW
= 123kHz INTERNAL OSCILLATOR
f
SW
= 0.4 f
EOSC
EXTERNAL OSCILLATOR
REF
–
10k
100
INPUT
MULTIPLEXER
100
Synchronizing Multiple LTC2493s with a Global
Address Call
In applications where several LTC2493s (or other I
2
C
delta-sigma ADCs from Linear Technology Corporation)
are used on the same I
2
C bus, all converters can be syn-
chronized through the use of a global address call. Prior
to issuing the global address call, all converters must have
completed a conversion cycle. The master then issues a
Start, followed by the global address 1110111, and a write
request. All converters will be selected and acknowledge
the request. The master then sends a write byte (optional)
followed by the Stop command. This will update the chan-
nel selection (optional) converter configuration (optional)
and simultaneously initiate a start of conversion for all
delta-sigma ADCs on the bus (see Figure 10). In order
GLOBAL ADDRESS
SCL
SDA
LTC2493
LTC2493
LTC2493
…
S
W ACK
WRITE (OPTIONAL)
P
2493 F10
ALL LTC2493s IN SLEEP
CONVERSION OF ALL LTC2493s
DATA INPUT
Figure 10. Synchronize Multiple LTC2493s with a Global Address Call
to synchronize multiple converters without changing
the channel or configuration, a Stop may be issued after
acknowledgement of the global write command. Global
read commands are not allowed and the converters will
NAK a global read request.
Driving the Input and Reference
The input and reference pins of the LTC2493 are connected
directly to a switched capacitor network. Depending on
the relationship between the differential input voltage and
the differential reference voltage, these capacitors are
switched between these four pins. Each time a capacitor
is switched between two of these pins, a small amount
of charge is transferred. A simplified equivalent circuit is
shown in Figure 11.
applicaTions inForMaTion
相關PDF資料 |
PDF描述 |
|---|---|
| LTC2495 | 16-Bit 8-/16-Channel ツヒ ADC with PGA, Easy Drive and I2C Interface |
| LTC2495CUHF | 16-Bit 8-/16-Channel ツヒ ADC with PGA, Easy Drive and I2C Interface |
| LTC2495IUHF | 16-Bit 8-/16-Channel ツヒ ADC with PGA, Easy Drive and I2C Interface |
| LTC2600 | Octal 16-/14-/12-Bit Rail-to-Rail DACs in 16-Lead SSOP |
| LTC2600CGN | Octal 16-/14-/12-Bit Rail-to-Rail DACs in 16-Lead SSOP |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LTC2494CUHF#PBF | 功能描述:IC ADC 16BIT W/PGA 38-QFN RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標準包裝:2,500 系列:- 位數(shù):16 采樣率（每秒）:15 數(shù)據(jù)接口:MICROWIRE?，串行，SPI? 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:480µW 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:38-WFQFN 裸露焊盤 供應商設備封裝:38-QFN（5x7） 包裝:帶卷 (TR) 輸入數(shù)目和類型:16 個單端，雙極；8 個差分，雙極 配用:DC1011A-C-ND - BOARD DELTA SIGMA ADC LTC2494 |
| LTC2494CUHF#TRPBF | 功能描述:IC ADC 16BIT W/PGA 38-QFN RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標準包裝:2,500 系列:- 位數(shù):16 采樣率（每秒）:15 數(shù)據(jù)接口:MICROWIRE?，串行，SPI? 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:480µW 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:38-WFQFN 裸露焊盤 供應商設備封裝:38-QFN（5x7） 包裝:帶卷 (TR) 輸入數(shù)目和類型:16 個單端，雙極；8 個差分，雙極 配用:DC1011A-C-ND - BOARD DELTA SIGMA ADC LTC2494 |
| LTC2494IUHF#PBF | 功能描述:IC ADC 16BIT W/PGA 38-QFN RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標準包裝:1 系列:microPOWER™ 位數(shù):8 采樣率（每秒）:1M 數(shù)據(jù)接口:串行，SPI? 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:- 電壓電源:模擬和數(shù)字 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:24-VFQFN 裸露焊盤 供應商設備封裝:24-VQFN 裸露焊盤（4x4） 包裝:Digi-Reel® 輸入數(shù)目和類型:8 個單端，單極 產(chǎn)品目錄頁面:892 (CN2011-ZH PDF) 其它名稱:296-25851-6 |
| LTC2494IUHF#TRPBF | 功能描述:IC ADC 16BIT W/PGA 38-QFN RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標準包裝:2,500 系列:- 位數(shù):16 采樣率（每秒）:15 數(shù)據(jù)接口:MICROWIRE?，串行，SPI? 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:480µW 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:38-WFQFN 裸露焊盤 供應商設備封裝:38-QFN（5x7） 包裝:帶卷 (TR) 輸入數(shù)目和類型:16 個單端，雙極；8 個差分，雙極 配用:DC1011A-C-ND - BOARD DELTA SIGMA ADC LTC2494 |
| LTC2495CUHF | 制造商:Linear Technology 功能描述:ADC Single Delta-Sigma 15sps 16-bit Serial 38-Pin QFN EP |
發(fā)布緊急采購，3分鐘左右您將得到回復。