参数资料
型号: LTC2440CGN#TRPBF
厂商: Linear Technology
文件页数: 17/28页
文件大小: 0K
描述: IC ADC DIFFER 24-BIT HS 16-SSOP
标准包装: 2,500
位数: 24
采样率(每秒): 3.5k
数据接口: MICROWIRE?,串行,SPI?
转换器数目: 2
功率耗散(最大): 40mW
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: 16-SSOP(0.154",3.90mm 宽)
供应商设备封装: 16-SSOP
包装: 带卷 (TR)
输入数目和类型: 1 个差分,双极
配用: DC570A-ND - BOARD DELTA SIGMA ADC LTC2440
LTC2440
24
2440fd
APPLICATIONS INFORMATION
fastest expected input signal. Figure 20 shows the large
signal response of the circuit in Figure 19.
3. Measure noise performance of the complete circuit. A
good technique is to build one amplier for each input,
even if only one will be used in the end application. Bias
both amplier outputs to midscale, with the inputs tied
together. Verify that the noise is as expected, taking into
account the bandwidth of the LTC2440 inputs for the OSR
being used, the amplier’s broadband voltage noise and
1/f corner (if any) and any additional noise due to the
amplier’s current noise and source resistance.
For more information on testing high linearity ADCs, refer
to Linear Technology Design Solutions 11.
Input Bandwidth and Frequency Rejection
The combined effect of the internal SINC4 digital lter and
the digital and analog autocalibration circuits determines
the LTC2440 input bandwidth and rejection characteristics.
The digital lter’s response can be adjusted by setting the
oversample ratio (OSR) through the SPI interface or by
supplying an external conversion clock to the fO pin.
Figure 19. Buffering the LTC2440 from High Impedance Sources Using a Chopper Amplier
Figure 20. Large Signal Input Settling Time Indicates
Completed Settling with Selected Load Capacitance.
Figure 21. Dynamic Input Current is Attenuated by Load
Capacitance and Completely Settled Before the Next Conversion
Sample Resulting in No Reduction in Performance.
VCC
fO
REF+
REF
SCK
BUSY
IN+
IN
SDO
CS
EXT
0.1μF
4
13
5
6
12
1, 8, 9, 16
11
10
15
SDI
7
5V
10μF
0.01μF
LTC2440
2440 F19
14
10Ω
IN+
5k
C2
C2, C5 TAIYO YUDEN JMK107BJ105MA
4.7μF
8-12V
LT1236-5
1μF
C1
R1
R2
R4
R5
0.01μF
1/2 LTC2051HV
C5
1μF
10Ω
IN–
5k
C4
0.01μF
1/2 LTC2051HV
+
+
2440 F20
100μs/DIV
100mV/DIV
2440 F21
5ns/DIV
2mV/DIV
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LTC2440IGN 功能描述:IC ADC DIFFER 24-BIT HS 16-SSOP 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
LTC2440IGN#PBF 功能描述:IC ADC DIFFER 24-BIT HS 16-SSOP 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
LTC2440IGN#PBF 制造商:Linear Technology 功能描述:A/D Converter (A-D) IC 制造商:Linear Technology 功能描述:IC, ADC, 24BIT, 3.5KHZ, SSOP-16
LTC2440IGN#TR 功能描述:IC CONV A/D 24-BIT DIFF 16-SSOP 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
LTC2440IGN#TRPBF 功能描述:IC ADC DIFFER 24-BIT HS 16-SSOP 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