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| 型号： | DC1783A-E |
| 厂商： | Linear Technology |
| 文件页数： | 1/26页 |
| 文件大小： | 0K |
| 描述： | BOARD SAR ADC LTC2379-18 |
| 软件下载： | QuikEval II System |
| 设计资源： | DC1783A Design Files DC1783A Schematic |
| 标准包装： | 1 |
| 系列： | QuikEval™ |
| ADC 的数量： | 1 |
| 位数： | 18 |
| 采样率（每秒）： | 1.6M |
| 数据接口： | 串行，SPI? |
| 输入范围： | ±VREF |
| 在以下条件下的电源（标准）： | 18mW @ 1.6MSPS |
| 工作温度： | 0°C ~ 70°C |
| 已用 IC / 零件： | LTC2379-18 |
| 已供物品： | 板 |
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LTC2379-18
1
237918fa
TYPICAL APPLICATION
FEATURES
DESCRIPTION
18-Bit, 1.6Msps, Low Power
SAR ADC with 101.2dB SNR
The LTC2379-18 is a low noise, low power, high speed
18-bit successive approximation register (SAR) ADC.
Operating from a 2.5V supply, the LTC2379-18 has a
±VREF fully differential input range with VREF ranging from
2.5V to 5.1V. The LTC2379-18 consumes only 18mW and
achieves ±2LSB INL maximum, no missing codes at 18 bits
with 101.2dB SNR.
The LTC2379-18 has a high speed SPI-compatible serial
interface that supports 1.8V, 2.5V, 3.3V and 5V logic while
also featuring a daisy-chain mode. The fast 1.6Msps
throughput with no cycle latency makes the LTC2379-18
ideally suited for a wide variety of high speed applications.
An internal oscillator sets the conversion time, easing exter-
nal timing considerations. The LTC2379-18 automatically
powers down between conversions, leading to reduced
power dissipation that scales with the sampling rate.
The LTC2379-18 features a unique digital gain compres-
sion (DGC) function, which eliminates the driver amplifier’s
negative supply while preserving the full resolution of the
ADC. When enabled, the ADC performs a digital scaling
function that maps zero-scale code from 0V to 0.1 VREF
and full-scale code from VREF to 0.9 VREF. For a typical
reference voltage of 5V, the full-scale input range is now
0.5V to 4.5V, which provides adequate headroom for
powering the driving amplifier from a single 5.5V supply.
32k Point FFT fS = 1.6Msps, fIN = 2kHz
APPLICATIONS
n 1.6Msps Throughput Rate
n ±2LSB INL (Max)
n Guaranteed 18-Bit No Missing Codes
n Low Power: 18mW at 1.6Msps, 18μW at 1.6ksps
n 101.2dB SNR (typ) at fIN = 2kHz
n –120dB THD (typ) at fIN = 2kHz
n Digital Gain Compression (DGC)
n Guaranteed Operation to 125°C
n 2.5V Supply
n Fully Differential Input Range ±VREF
n VREF Input Range from 2.5V to 5.1V
n No Pipeline Delay, No Cycle Latency
n 1.8V to 5V I/O Voltages
n SPI-Compatible Serial I/O with Daisy-Chain Mode
n Internal Conversion Clock
n 16-Lead MSOP and 4mm
× 3mm DFN Packages
n Medical Imaging
n High Speed Data Acquisition
n Portable or Compact Instrumentation
n Industrial Process Control
n Low Power Battery-Operated Instrumentation
n ATE
FREQUENCY (kHz)
0
100 200 300 400
800
700
600
500
–180
AMPLITUDE
(dBFS)
–60
–40
–20
–80
–100
–120
–140
–160
0
237918 TA02
SNR = 101.2dB
THD = –120dB
SINAD = 101.1dB
SFDR = 121dB
20Ω
VREF
0V
VREF
0V
20Ω
3300pF
–
+
VREF
SAMPLE CLOCK
237918 TA01
10μF
0.1μF
2.5V
REF
1.8V TO 5V
2.5V TO 5.1V
47μF
(X5R, 0805 SIZE)
REF
GND
CHAIN
RDL/SDI
SDO
SCK
BUSY
CNV
REF/DGC
LTC2379-18
VDD
OVDD
IN+
IN–
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
SoftSpan is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners. Protected by U.S. Patents including 7705765.
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| DC1783A-F | 功能描述:BOARD SAR ADC LTC2378-18 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 |
| DC1783A-G | 功能描述:BOARD SAR ADC LTC2377-18 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 |
| DC1783A-H | 功能描述:BOARD SAR ADC LTC2376-18 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 |
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| DC1785A | 制造商:Linear Technology 功能描述:EVAL BOARD, LTC2991 TEMP, VOLTAGE, CURRE |
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