LTC2383-16
16-Bit, 1Msps, Low Power
SAR ADC with Serial Interface
FEATURES
DESCRIPTION
The LTC®2383-16 is a low noise, low power, high speed
16-bit successive approximation register (SAR) ADC.
Operating from a 2.5V supply, the LTC2383-16 has a
2.5V fully differential input range. The LTC2383-16
consumes only 13mW and achieves 2LSꢀ ꢁIL max, no
missing codes at 16-bits and 92dꢀ SIR.
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1Msps Throughput Rate
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2ꢀSꢁ INꢀ ꢂMaꢃx
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Guaranteed 16-ꢁit No Missing Codes
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ꢀow Power: 13mW at 1Msps, 13μW at 1ksps
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92dꢁ SNR ꢂtypx at f = 20kHz
IN
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Guaranteed Operation to 125°C
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2.5V Supply
The LTC2383-16 has a high speed SPꢁ-compatible serial
interface that supports 1.8V, 2.5V, 3.3V and 5V logic
while also featuring a daisychain mode. The fast 1Msps
throughput with no cycle latency makes the LTC2383-16
ideally suited for a wide variety of high speed applica-
tions. An internal oscillator sets the conversion time,
easing external timing considerations. The LTC2383-16
automatically powers down between conversions, lead-
ing to reduced power dissipation that scales with the
sampling rate.
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Fully Differential ꢁnput Range 2.5V
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External 2.5V Reference ꢁnput
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Io Pipeline Delay, Io Cycle Latency
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1.8V to 5V ꢁ/O Voltages
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SPꢁ-Compatible Serial ꢁ/O with Daisy-Chain Mode
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ꢁnternal Conversion Clock
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16-pin MSOP and 4mm × 3mm DFI Packages
APPLICATIONS
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Medical ꢁmaging
ꢀTC238X-16 SAR ADC Family
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High Speed Data Acquisition
PART NUMꢁER
LTC2383-16
LTC2382-16
LTC2381-16
RESOꢀUTION
SPEED
1Msps
POWER
13mW
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Portable or Compact ꢁnstrumentation
ꢁndustrial Process Control
Low Power ꢀattery-Operated ꢁnstrumentation
ATE
16
16
16
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500ksps
250ksps
6.5mW
3.25mW
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L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
TYPICAL APPLICATION
32k Point FFT fS = 1Msps, fIN = 20kHz
0
2.5V 1.8V TO 5V
SIR = 92.2dꢀ
–20
–40
THD = –106.2dꢀ
SꢁIAD = 92dꢀ
SFDR = 110.4dꢀ
10μF
0.1μF
AIALOG ꢁIPUT
0V TO 2.5V
–60
V
OV
DD
50Ω
50Ω
100Ω
3300pF
100Ω
CHAꢁI
RDL/SDꢁ
SDO
DD
+
–
ꢁI
–80
LT6350
LTC2383-16
–100
–120
–140
–160
–180
SCK
ꢀUSY
CIV
ꢁI
SAMPLE CLOCK
REF
GID
23816 TA01
2.5V
SꢁIGLE-EIDED-
TO-DꢁFFEREITꢁAL
DRꢁVER
47μF
(X5R, 0805 SꢁZE)
0
100
200
300
400
500
FREQUEICY (kHz)
238316 TA02
238316f
1