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LTC2327-18 数据表(PDF) 1 Page - Linear Technology

部件名 LTC2327-18
功能描述  True Bipolar, Pseudo-Differential Input ADC with 95dB SNR
Download  26 Pages
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制造商  LINER [Linear Technology]
网页  http://www.linear.com
标志 LINER - Linear Technology

LTC2327-18 数据表(HTML) 1 Page - Linear Technology

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LTC2327-18
1
232718fa
For more information www.linear.com/LTC2327-18
Typical applicaTion
FeaTures
DescripTion
18-Bit, 500ksps, ±10.24V
True Bipolar, Pseudo-Differential
Input ADC with 95dB SNR
The LTC®2327-18 is a low noise, high speed 18-bit suc-
cessive approximation register (SAR) ADC with pseudo-
differential inputs. Operating from a single 5V supply,
the LTC2327-18 has a ±10.24V true bipolar input range,
making it ideal for high voltage applications which require
a wide dynamic range. The LTC2327-18 achieves ±5LSB
INLmaximum,nomissingcodesat18bitswith95dBSNR.
The LTC2327-18 has an onboard single-shot capable
reference buffer and low drift (20ppm/°C max) 2.048V
temperature compensated reference. The LTC2327-18
also has a high speed SPI-compatible serial interface that
supports1.8V,2.5V,3.3Vand5Vlogicwhilealsofeaturing
a daisy-chain mode. The fast 500ksps throughput with
no cycle latency makes the LTC2327-18 ideally suited
for a wide variety of high speed applications. An internal
oscillator sets the conversion time, easing external timing
considerations. The LTC2327-18 dissipates only 36mW
and automatically naps between conversions, leading to
reduced power dissipation that scales with the sampling
rate. A sleep mode is also provided to reduce the power
consumption of the LTC2327-18 to 300μW for further
power savings during inactive periods.
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, 7961132.
applicaTions
n
500ksps Throughput Rate
n
±5LSB INL (Max)
n
Guaranteed 18-Bit No Missing Codes
n
Pseudo-Differential Inputs
n
True Bipolar Input Ranges ±6.25V, ±10.24V, ±12.5V
n
95dB SNR (Typ) at fIN = 2kHz
n
–111dB THD (Typ) at fIN = 2kHz
n
Guaranteed Operation to 125°C
n
Single 5V Supply
n
Low Drift (20ppm/°C Max) 2.048V Internal Reference
n
Onboard Single-Shot Capable Reference Buffer
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
Power Dissipation 36mW (Typ)
n
16-Lead MSOP Package
n
Programmable Logic Controllers
n
Industrial Process Control
n
High Speed Data Acquisition
n
Portable or Compact Instrumentation
n
ATE
32k Point FFT fS = 500ksps,
fIN = 2kHz
+10.24V
–10.24V
+
SAMPLE CLOCK
232718 TA01
10µF
0.1µF
5V
REF
1.8V TO 5V
47µF
REFBUF
GND
CHAIN
RDL/SDI
SDO
SCK
BUSY
CNV
LTC2327-18
LT®1468
VDD
2.2µF
100nF
REFIN
VDDLBYP OVDD
IN+
IN
FREQUENCY (kHz)
–180
–60
–40
–20
–80
–100
–120
–140
–160
0
232718 TA01b
SNR = 95.3dB
THD = –113dB
SINAD = 95.2dB
SFDR = –116dB
0
50
100
150
250
200


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