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参数资料
| 型号： | DC1444A-A |
| 厂商： | Linear Technology |
| 文件页数： | 6/26页 |
| 文件大小： | 0K |
| 描述： | BOARD SAR ADC LTC2301 |
| 软件下载： | QuikEval System |
| 设计资源： | DC1444A Design File DC1444A Schematic |
| 标准包装： | 1 |
| 系列： | QuikEval™ |
| ADC 的数量： | 1 |
| 位数： | 12 |
| 采样率（每秒）： | 14k |
| 数据接口： | I²C，串行 |
| 在以下条件下的电源（标准）： | 1.5mW @ 1kSPS |
| 工作温度： | 0°C ~ 70°C |
| 已用 IC / 零件： | LTC2301 |
| 已供物品： | 板 |
| 相关产品： | LTC2301IMS#TRPBF-ND - IC ADC 12-BIT 1CHN 12-MSOP LTC2301IDE#TRPBF-ND - IC ADC 12-BIT 1CHN 12-DFN LTC2301IDE#PBF-ND - IC ADC 12-BIT 1CHN 12-DFN LTC2301HMS#TRPBF-ND - IC ADC 12-BIT 1CHN 12-MSOP LTC2301HMS#PBF-ND - IC ADC 12-BIT 1CHN 12-MSOP LTC2301CMS#TRPBF-ND - IC ADC 12-BIT 1CHN 12-MSOP LTC2301CMS#PBF-ND - IC ADC 12-BIT 1CHN 12-MSOP LTC2301CDE#TRPBF-ND - IC ADC 12-BIT 1CHN 12-DFN LTC2301IMS#PBF-ND - IC ADC 12BIT I2C 12-MSOP LTC2301CDE#PBF-ND - IC ADC 12BIT I2C 12-DFN |
LTC2301/LTC2305
14
23015fb
APPLICATIONS INFORMATION
The magnitude of the DC current is then approximately
IDC=(VIN–VREFCOMP/2)/REQ,whichisroughlyproportional
to VIN.TopreventlargeDCdropsacrosstheresistorRFILTER,
a lter with a small resistor and large capacitor should be
chosen. When running at the maximum throughput rate
of 14ksps, the input current equals 1.5μA at VIN = 4.096V,
which amounts to a full-scale error of 0.5 LSBs when using
a lter resistor (RFILTER) of 333Ω. Applications requiring
lower sample rates can tolerate a larger lter resistor for
the same amount of full-scale error.
Figures 3a and 3b show respective examples of input
ltering for single-ended and differential inputs. For the
single-ended case in Figure 4a, a 50Ω source resistor
and a 2000pF capacitor to ground on the input will limit
the input bandwidth to 1.6MHz. High quality capacitors
and resistors should be used in the RC lter since these
components can add distortion. NPO and silver mica type
dielectric capacitors have excellent linearity. Carbon surface
mount resistors can generate distortion from self heating
Figure 2a. Analog Input Equivalent Circuit
Figure 2b. Analog Input Equivalent
Circuit for Large Filter Capacitances
VIN
INPUT
CH0, CH1,
IN+, IN–
RON =
100Ω
CIN =
55pF
CFILTER
RSOURCE
23015 F02a
LTC2301
LTC2305
VIN
INPUT
(CH0, CH1,
IN+, IN–)
REQ =
1/(fSMPL CIN)
VREFCOMP/2
CFILTER
RFILTER
IDC
23015 F02b
LTC2301
LTC2305
+
–
and from damage that may occur during soldering. Metal
lm surface mount resistors are much less susceptible
to both problems.
Dynamic Performance
Fast Fourier Transform (FFT) test techniques are used to
test the ADC’s frequency response, distortion and noise
at the rated throughput. By applying a low distortion
sine wave and analyzing the digital output using an FFT
algorithm, the ADC’s spectral content can be examined
for frequencies outside the fundamental.
Signal-to-Noise and Distortion Ratio (SINAD)
The signal-to-noise and distortion ratio (SINAD) is the
ratio between the RMS amplitude of the fundamental input
frequency to the RMS amplitude of all other frequency
components at the A/D output. The output is band-limited
to frequencies from above DC and below half the sampling
Figure 3a. Optional RC Input Filtering for Single-Ended Input
Figure 3b. Optional RC Input Filtering for Differential Inputs
23015 F03a
CH0, CH1
LTC2305
REFCOMP
2000pF
0.1μF
10μF
50Ω
ANALOG
INPUT
1000pF
23015 F03b
CH0, IN+
CH1, IN–
LTC2301
LTC2305
REFCOMP
1000pF
0.1μF
10μF
50Ω
DIFFERENTIAL
ANALOG
INPUTS
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DC1444A-B | 功能描述:BOARD SAR ADC LTC2305 RoHS:是 类别:编程器，开发系统 >> 评估板 - 模数转换器 (ADC) 系列:QuikEval™ 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:- ADC 的数量:1 位数:12 采样率（每秒）:94.4k 数据接口:USB 输入范围:±VREF/2 在以下条件下的电源（标准）:- 工作温度:-40°C ~ 85°C 已用 IC / 零件:MAX11645 已供物品:板，软件 |
| DC1453A | 功能描述:BOARD EVAL LTM4619 RoHS:否 类别:编程器，开发系统 >> 评估板 - DC/DC 与 AC/DC（离线）SMPS 系列:LTM®, uModule® 标准包装:1 系列:- 主要目的:DC/DC，步降 输出及类型:1，非隔离 功率 - 输出:- 输出电压:3.3V 电流 - 输出:3A 输入电压:4.5 V ~ 28 V 稳压器拓扑结构:降压 频率 - 开关:250kHz 板类型:完全填充 已供物品:板 已用 IC / 零件:L7981 其它名称:497-12113STEVAL-ISA094V1-ND |
| DC1459A | 功能描述:BOARD EVALUATION FOR LTC3588 RoHS:否 类别:编程器，开发系统 >> 评估演示板和套件 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:- 主要目的:电源管理，电池充电器 嵌入式:否 已用 IC / 零件:MAX8903A 主要属性:1 芯锂离子电池 次要属性:状态 LED 已供物品:板 |
| DC1459B-A | 制造商:Linear Technology 功能描述:ENERY HARVESTING EVAL. BOARD 制造商:Linear Technology 功能描述:LTC3588, ENERGY HARVESTING PWR SUPPLY, DEMO BOARD; Silicon Manufacturer:Linear Technology; Kit Application Type:Power Management; Application Sub Type:Energy Harvesting; Kit Contents:Board |
| DC1459B-B | 制造商:Linear Technology 功能描述:EVAL BOARD, LTC3588 ENERGY HARVESTING PO 制造商:Linear Technology 功能描述:EVAL BOARD, LTC3588 ENERGY HARVESTING POWER SUPPLY; Silicon Manufacturer:Linear Technology; Silicon Core Number:LTC3588; Kit Application Type:Power Management; Application Sub Type:Energy Harvesting; Kit Contents:Board, Guide |
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