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参数资料
| 型号： | LTC2482CDD#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 3/32页 |
| 文件大小： | 0K |
| 描述： | IC ADC 16BIT 10-DFN |
| 标准包装： | 2,500 |
| 位数： | 16 |
| 采样率（每秒）： | 6.8 |
| 数据接口： | MICROWIRE?，串行，SPI? |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 480µW |
| 电压电源： | 单电源 |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-WFDFN 裸露焊盘 |
| 供应商设备封装： | 10-DFN（3x3） |
| 包装： | 带卷 (TR) |
| 输入数目和类型： | 1 个差分，双极 |
| 配用： | DC941A-ND - BOARD DELTA SIGMA ADC LTC2482 |
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LTC2482
11
2482fc
APPLICATIONS INFORMATION
by two orders of magnitude. The part remains in the sleep
state as long as CS is high. The conversion result is held
indenitely in a static shift register while the converter is
in the sleep state.
Once CS is pulled low, the device exits the low power mode
and enters the data output state. If CS is pulled high before
the rst rising edge of SCK, the device returns to the low
power sleep mode and the conversion result is still held
in the internal static shift register. If CS remains low after
the rst rising edge of SCK, the device begins outputting
the conversion result. Taking CS high at this point will
terminate the data output state and start a new conversion.
The conversion result is shifted out of the device through
the serial data output pin (SDO) on the falling edge of the
serial clock (SCK) (see Figure 2).
Through timing control of the CS and SCK pins, the LTC2482
offers several exible modes of operation (internal or
external SCK and free-running conversion modes). These
various modes do not require programming conguration
registers; moreover, they do not disturb the cyclic operation
described above. These modes of operation are described
in detail in the Serial Interface Timing Modes section.
Easy Drive Input Current Cancellation
The LTC2482 combines a high precision delta-sigma ADC
with an automatic differential input current cancellation
front end. A proprietary front-end passive sampling net-
work transparently removes the differential input current.
This enables external RC networks and high impedance
sensors to directly interface to the LTC2482 without
external ampliers. The remaining common mode input
current is eliminated by either balancing the differential
input impedances or setting the common mode input
equal to the common mode reference (see Automatic Input
Current Cancellation section). This unique architecture
does not require on-chip buffers enabling input signals to
swing all the way to ground and up to VCC. Furthermore,
the cancellation does not interfere with the transparent
offset and full-scale autocalibration and the absolute ac-
curacy (full scale + offset + linearity) is maintained with
external RC networks.
Output Data Format
The LTC2482 serial output data stream is 24 bits long. The
rst 3 bits represent status information indicating the sign
and conversion state. The next 17 bits are the conversion
result, MSB rst. The remaining 4 bits are always zero.
Bit 21 and Bit 20 together are also used to indicate an
underrange condition (the differential input voltage is
below –FS) or an overrange condition (the differential
input voltage is above +FS).
In applications where a processor generates 32 clock
cycles, or to remain compatible with higher resolution
converters, the LTC2482’s digital interface will ignore
extra clock edges seen during the next conversion period
after the 24th and output “1” for the extra clock cycles.
Furthermore, CS may be pulled high prior to outputting
all 24 bits, aborting the data out transfer and initiating a
new conversion.
CS
SDO
Hi-Z
SIG
BIT 21
BIT 20
BIT 19
BIT 18
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
BIT 22
BIT 23
DMY
MSB
B16
CONVERSION RESULT
LSB
SCK
SLEEP
DATA OUTPUT
EOC
CONVERSION
2482 F02
Figure 2. Output Data Timing
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC2482IDD | 制造商:Linear Technology 功能描述:ADC Single Delta-Sigma 6.8sps 16-bit Serial 10-Pin DFN EP |
| LTC2482IDD#PBF | 功能描述:IC ADC 16BIT 10-DFN RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1 系列:microPOWER™ 位数:8 采样率（每秒）:1M 数据接口:串行，SPI? 转换器数目:1 功率耗散（最大）:- 电压电源:模拟和数字 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:24-VFQFN 裸露焊盘 供应商设备封装:24-VQFN 裸露焊盘（4x4） 包装:Digi-Reel® 输入数目和类型:8 个单端，单极 产品目录页面:892 (CN2011-ZH PDF) 其它名称:296-25851-6 |
| LTC2482IDD#PBF | 制造商:Linear Technology 功能描述:IC, ADC, 16BIT, DFN-10 |
| LTC2482IDD#TR | 制造商:Linear Technology 功能描述:ADC Single Delta-Sigma 6.8sps 16-bit Serial 10-Pin DFN EP T/R |
| LTC2482IDD#TRPBF | 功能描述:IC ADC 16BIT 10-DFN RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:2,500 系列:- 位数:16 采样率（每秒）:15 数据接口:MICROWIRE?，串行，SPI? 转换器数目:1 功率耗散（最大）:480µW 电压电源:单电源 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:38-WFQFN 裸露焊盘 供应商设备封装:38-QFN（5x7） 包装:带卷 (TR) 输入数目和类型:16 个单端，双极；8 个差分，双极 配用:DC1011A-C-ND - BOARD DELTA SIGMA ADC LTC2494 |
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