参数资料
| 型号： | LTC1400IS8 |
| 厂商： | Linear Technology |
| 文件页数： | 4/20页 |
| 文件大小： | 0K |
| 描述： | IC A/D CONV 12BIT W/SHTDN 8-SOIC |
| 标准包装： | 100 |
| 位数： | 12 |
| 采样率（每秒）： | 400k |
| 数据接口： | MICROWIRE?，串行，SPI? |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 160mW |
| 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： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 管件 |
| 输入数目和类型： | 1 个单端，单极；1 个单端，双极 |
| 产品目录页面： | 1346 (CN2011-ZH PDF) |
LTC1400
12
1400fa
Input signal leads to AIN and signal return leads from GND
(Pin 4) should be kept as short as possible to minimize
noisecoupling.Inapplicationswherethisisnotpossible,a
shielded cable between source and ADC is recommended.
Also,sinceanypotentialdifferenceingroundsbetweenthe
signalsourceandADCappearsasanerrorvoltageinseries
with the input signal, attention should be paid to reducing
the ground circuit impedance as much as possible.
APPLICATIO S I FOR ATIO
W
U
ANALOG SUPPLY
–5V
GND
5V
+
LTC1400
VSS
VCC
GND
DIGITAL SUPPLY
GND
5V
+
DIGITAL CIRCUITRY
VCC
GND
1400 F11
Figure11showstherecommendedsystemgroundconnec-
tions. All analog circuitry grounds should be terminated at
theLTC1400GNDpin.ThegroundreturnfromtheLTC1400
Pin 4 to the power supply should be low impedance for
noise free operation. Digital circuitry grounds must be
connected to the digital supply common.
InapplicationswheretheADCdataoutputsandcontrolsig-
nalsareconnectedtoacontinuouslyactivemicroprocessor
bus, it is possible to get errors in the conversion results.
These errors are due to feedthrough from the micropro-
cessor to the successive approximation comparator. The
problem can be eliminated by forcing the microprocessor
into a Wait state during conversion or by using three-state
buffers to isolate the ADC data bus.
Power-Down Mode
Upon power-up, the LTC1400 is initialized to the active
state and is ready for conversion. However, the chip can
be easily placed into the Nap or Sleep mode by exercising
the right combination of CLK and CONV signal. In the Nap
modeallpowerisoffexcepttheinternalreference,whichis
still active and provides 2.42V output voltage to the other
circuitry. In this mode, the ADC draws only 6mW of power
instead of 75mW (for minimum power, the logic inputs
must be within 500mV of the supply rails). The wake-up
time from the Nap mode to the active mode is 350ns.
Figure 11. Power Supply Connection
CLK
CONV
NAP
SLEEP
VREF
t1
t11
REFRDY
NOTE: NAP AND SLEEP ARE INTERNAL SIGNALS. REFRDY APPEARS AS A BIT IN THE DOUT WORD.
1400 F12
Figure 12. Nap Mode and Sleep Mode Waveforms
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC1400IS8#PBF | 功能描述:IC A/D CONV 12BIT W/SHTDN 8-SOIC 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 |
| LTC1400IS8#TR | 功能描述:IC ADC 12BIT 400KSPS SHTDN 8SOIC RoHS:否 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1,000 系列:- 位数:16 采样率（每秒）:45k 数据接口:串行 转换器数目:2 功率耗散（最大）:315mW 电压电源:模拟和数字 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC W 包装:带卷 (TR) 输入数目和类型:2 个单端，单极 |
| LTC1400IS8#TRPBF | 功能描述:IC A/D CONV 12BIT W/SHTDN 8-SOIC RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1,000 系列:- 位数:16 采样率（每秒）:45k 数据接口:串行 转换器数目:2 功率耗散（最大）:315mW 电压电源:模拟和数字 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC W 包装:带卷 (TR) 输入数目和类型:2 个单端，单极 |
| LTC1400IS8PBF | 制造商:Linear Technology 功能描述:ADC SAR 400ksps 12-Bit Serial SOIC8 |
| LTC1401CS8 | 功能描述:IC A/D CONV 12BIT W/SHTDN 8-SOIC RoHS:否 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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