Linear Technology LTC2380-16 with LTC6655-5/LT6350: 16-Bit, 2Msps, SAR ADC with 96dB SNR. Req DC718 or DC590 DC1783A-A DC1783A-A Fiche De Données
Codes de produits
DC1783A-A
LTC2380-16
1
238016fa
TYPICAL APPLICATION
FEATURES
DESCRIPTION
16-Bit, 2Msps, Low Power
SAR ADC with 96.2dB SNR
The LTC
®
2380-16 is a low noise, low power, high speed
16-bit successive approximation register (SAR) ADC.
Operating from a 2.5V supply, the LTC2380-16 has a
±V
Operating from a 2.5V supply, the LTC2380-16 has a
±V
REF
fully differential input range with V
REF
ranging from
2.5V to 5.1V. The LTC2380-16 consumes only 19mW and
achieves ±0.6LSB INL maximum, no missing codes at
16 bits with 96.2dB SNR.
achieves ±0.6LSB INL maximum, no missing codes at
16 bits with 96.2dB SNR.
The LTC2380-16 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 2Msps through-
put with no cycle latency makes the LTC2380-16 ideally
suited for a wide variety of high speed applications. An
internal oscillator sets the conversion time, easing external
timing considerations. The LTC2380-16 automatically pow-
ers down between conversions, leading to reduced power
dissipation that scales with the sampling rate.
interface that supports 1.8V, 2.5V, 3.3V and 5V logic while
also featuring a daisy-chain mode. The fast 2Msps through-
put with no cycle latency makes the LTC2380-16 ideally
suited for a wide variety of high speed applications. An
internal oscillator sets the conversion time, easing external
timing considerations. The LTC2380-16 automatically pow-
ers down between conversions, leading to reduced power
dissipation that scales with the sampling rate.
The LTC2380-16 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 • V
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 • V
REF
and full-scale code from V
REF
to 0.9 • V
REF
. 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.
0.5V to 4.5V, which provides adequate headroom for
powering the driving amplifier from a single 5.5V supply.
32k Point FFT f
S
= 2Msps, f
IN
= 2kHz
APPLICATIONS
n
2Msps Throughput Rate
n
±0.6LSB INL (Max)
n
Guaranteed 16-Bit No Missing Codes
n
Low Power: 19mW at 2Msps, 19μW at 2ksps
n
96.2dB SNR (typ) at f
IN
= 2kHz
n
–117dB THD (typ) at f
IN
= 2kHz
n
Digital Gain Compression (DGC)
n
Guaranteed Operation to 125°C
n
2.5V Supply
n
Fully Differential Input Range ±V
REF
n
V
REF
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
1000
900
800
700
600
500
–180
AMPLITUDE (dBFS)
–60
–40
–20
–80
–100
–120
–140
–160
0
238016 TA02
SNR = 96.4dB
THD = –119dB
SINAD = 96.3dB
SFDR = 122dB
THD = –119dB
SINAD = 96.3dB
SFDR = 122dB
V
REF
20Ω
V
REF
0V
V
REF
0V
20Ω
3300pF
3300pF
3300pF
SAMPLE CLOCK
238016 TA01
10μF
0.1μF
2.5V
REF
1.8V TO 5V
2.5V TO 5.1V
47μF
(X5R, 0805 SIZE)
(X5R, 0805 SIZE)
REF
GND
CHAIN
RDL/SDI
SDO
SCK
BUSY
CNV
REF/DGC
LTC2380-16
V
DD
OV
DD
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.
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.