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| 型号： | DC1813A-E |
| 厂商： | Linear Technology |
| 文件页数： | 1/24页 |
| 文件大小： | 0K |
| 描述： | BOARD SAR ADC LTC2369-18 |
| 软件下载： | QuikEval II System |
| 设计资源： | DC1813A Schematic DC1813A Design File |
| 标准包装： | 1 |
| 系列： | QuikEval-II™ |
| 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： | 0 ~ 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： | LTC2369-18 |
| 已供物品： | 板 |
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LTC2369-18
1
236918fa
18-Bit, 1.6Msps, Pseudo-
Differential Unipolar SAR
ADC with 96.5dB SNR
TYPICAL APPLICATION
FEATURES
DESCRIPTION
The LTC2369-18 is a low noise, low power, high speed
18-bit successive approximation register (SAR) ADC.
Operating from a 2.5V supply, the LTC2369-18 has a 0V
to VREF pseudo-differential unipolar input range with VREF
ranging from 2.5V to 5.1V. The LTC2369-18 consumes only
18mW and achieves ±2.5LSB INL maximum, no missing
codes at 18 bits with 96.5dB SNR.
The LTC2369-18 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 LTC2369-18
ideally suited for a wide variety of high speed applications.
An internal oscillator sets the conversion time, easing exter-
nal timing considerations. The LTC2369-18 automatically
powers down between conversions, leading to reduced
power dissipation that scales with the sampling rate.
32k Point FFT fS = 1.6Msps, fIN = 2kHz
APPLICATIONS
n 1.6Msps Throughput Rate
n ±2.5LSB INL (Max)
n Guaranteed 18-Bit No Missing Codes
n Low Power: 18mW at 1.6Msps, 18μW at 1.6ksps
n 96.5dB SNR (Typ) at fIN = 2kHz
n –120dB THD (Typ) at fIN = 2kHz
n Guaranteed Operation to 125°C
n 2.5V Supply
n Pseudo-Differential Unipolar Input Range: 0V to 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
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.
5.1Ω
VREF
0V
10nF
–
+
SAMPLE CLOCK
236918 TA01a
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
LTC2369-18
LT6202
VDD
OVDD
IN+
IN–
FREQUENCY (kHz)
0
100 200 300 400
800
700
600
500
–180
AMPLITUDE
(dBFS)
–60
–40
–20
–80
–100
–120
–140
–160
0
236918 TA01b
SNR = 96.5dB
THD = –127dB
SINAD = 96.5dB
SFDR = 134dB
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