As long as the voltage on the select" />
參數資料
型號: LTC2489IDE#PBF
廠商: Linear Technology
文件頁數: 4/24頁
文件大?。?/td> 0K
描述: IC ADC 16BIT DELTA SIG 14-DFN
標準包裝: 91
位數: 16
采樣率(每秒): 7.5
數據接口: I²C,串行
轉換器數目: 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: 14-WFDFN 裸露焊盤
供應商設備封裝: 14-DFN-EP(4x3)
包裝: 管件
輸入數目和類型: 4 個單端,雙極;2 個差分,雙極
產品目錄頁面: 1348 (CN2011-ZH PDF)
配用: DC1010A-B-ND - BOARD DELTA SIGMA ADC LTC2489
LTC2489
12
2489fa
result in binary two’s complement format. The remaining
six bits are always 0.
As long as the voltage on the selected input channels (IN+
and IN) remains between –0.3V and VCC + 0.3V (absolute
maximum operating range) a conversion result is gener-
ated for any differential input voltage VIN from –FS = –0.5
VREF to +FS = 0.5 VREF. For differential input voltages
greater than +FS, the conversion result is clamped to the
value corresponding to +FS. For differential input voltages
below –FS, the conversion result is clamped to the value
–FS – 1LSB.
Table 2. LTC2489 Status Bits
Input Range
Bit 23
SIG
Bit 22
MSB
VIN ≥ FS
1
0V ≤ VIN < FS
1
0
–FS ≤ VIN < 0V
0
1
VIN < –FS
0
INPUT DATA FORMAT
The LTC2489 serial input is 8 bits long and is written into
the device in one 8-bit word. SGL, ODD, A2, A1, A0 are
used to select the input channel.
After power-up, the device initiates an internal reset cycle
which sets the input channel to CH0-CH1 (IN+ = CH0,
IN= CH1). The first conversion automatically begins
at power-up using this default input channel. Once the
Table 1. Output Data Format
Differential Input Voltage
VIN*
Bit 23
SIG
Bit 22
MSB
Bit 21
Bit 20
Bit 19
Bit 6
LSB
Bits 5-0
Always 0
VIN* ≥ FS**
1
0
0
000000
FS** – 1LSB
1
0
1
1
000000
0.5 FS**
1
0
1
0
0
000000
0.5 FS** – 1LSB
1
0
1
1
000000
0
1
0
0
000000
–1LSB
0
1
1
000000
–0.5 FS**
0
1
0
0
000000
–0.5 FS** – 1LSB
0
1
0
1
1
000000
–FS**
0
1
0
0
000000
VIN* < –FS**
0
1
1
000000
*The differential input voltage VIN = IN+ – IN. **The full-scale voltage FS = 0.5 VREF.
conversion is complete, a new channel may be written
into the device.
The first three bits of the input word consist of two pre-
amble bits and one enable bit. These three bits are used
to enable the input channel selection. Valid settings for
these three bits are 000, 100, and 101. Other combinations
should be avoided.
If the first three bits are 000 or 100, the following data
is ignored (don’t care) and the previously selected input
channel remains valid for the next conversion.
If the first three bits shifted into the device are 101, then
the next five bits select the input channel for the next
conversion cycle (see Table 3).
APPLICATIONS INFORMATION
Table 3 Channel Selection
MUX ADDRESS
CHANNEL SELECTION
SGL
ODD/
SIGN
A2A1A0
0
1
2
3
COM
*0
0000
IN+
IN
00001
IN+
IN
01000
IN
IN+
01001
IN
IN+
10000
IN+
IN
10001
IN+
IN
11000
IN+
IN
11001
IN+
IN
*Default at power-up
相關PDF資料
PDF描述
LT1017CSW#PBF IC COMPARATOR MCRPWR DUAL 16SOIC
ISL31483EIBZ-T7A IC TXRX RS485 FAULT PROT 14SOIC
VE-23Y-MX-B1 CONVERTER MOD DC/DC 3.3V 49.5W
LT1017CSW IC COMPARATOR MCRPWR DUAL 16SOIC
LTC1197IS8#PBF IC A/DCONV 10BIT W/SHTDWN 8-SOIC
相關代理商/技術參數
參數描述
LTC2492CDE 制造商:Linear Technology 功能描述:ADC Single Delta-Sigma 7.5sps 24-bit Serial 14-Pin DFN EP
LTC2492CDE#PBF 功能描述:IC ADC 24BIT DELTA SIG 14-DFN RoHS:是 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 標準包裝:1 系列:microPOWER™ 位數:8 采樣率(每秒):1M 數據接口:串行,SPI? 轉換器數目:1 功率耗散(最大):- 電壓電源:模擬和數字 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® 輸入數目和類型:8 個單端,單極 產品目錄頁面:892 (CN2011-ZH PDF) 其它名稱:296-25851-6
LTC2492CDE#TRPBF 功能描述:IC ADC 24BIT DELTA SIG 14-DFN RoHS:是 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 標準包裝:2,500 系列:- 位數:16 采樣率(每秒):15 數據接口:MICROWIRE?,串行,SPI? 轉換器數目: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
LTC2492IDE#PBF 功能描述:IC ADC 24BIT DELTA SIG 14-DFN RoHS:是 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 標準包裝:1 系列:microPOWER™ 位數:8 采樣率(每秒):1M 數據接口:串行,SPI? 轉換器數目:1 功率耗散(最大):- 電壓電源:模擬和數字 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® 輸入數目和類型:8 個單端,單極 產品目錄頁面:892 (CN2011-ZH PDF) 其它名稱:296-25851-6
LTC2492IDE#TRPBF 功能描述:IC ADC 24BIT DELTA SIG 14-DFN RoHS:是 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 標準包裝:1,000 系列:- 位數:16 采樣率(每秒):45k 數據接口:串行 轉換器數目:2 功率耗散(最大):315mW 電壓電源:模擬和數字 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) 供應商設備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數目和類型:2 個單端,單極