LTC2393-16_1 Datasheet, PDF (1/24 Pages) Linear Technology – 16-Bit, 1Msps SAR ADC With 94db SNR

FEATURES
n _{1Msps Throughput Rate}
n _{±2LSB INL (Max)}
n _{Guaranteed 16-Bit No Missing Codes}
n _{94.2dB SNR (Typ) at fIN = 20kHz}
n _{Guaranteed Operation to 125°C}
n _{Single 5V Supply}
n _{1.8V to 5V I/O Voltages}
n _{140mW Power Dissipation}
n _{±4.096V Differential Input Range}
n _{Internal Reference (20ppm/°C Max)}
n _{No Pipeline Delay, No Cycle Latency}
n _{Parallel and Serial Interface}
n _{Internal Conversion Clock}
n _{48-pin 7mm × 7mm LQFP and QFN Packages}
APPLICATIONS
n _{Medical Imaging}
n _{High Speed Data Acquisition}
n _{Digital Signal Processing}
n _{Industrial Process Control}
n _{Instrumentation}
n _ATE
LTC2393-16
16-Bit, 1Msps SAR ADC
With 94dB SNR
DESCRIPTION
The LTC^®2393-16 is a low noise, high speed 16-bit suc-
cessive approximation register (SAR) ADC. Operating
from a single 5V supply, the LTC2393-16 supports a large
±4.096V fully differential input range, making it ideal for
high performance applications which require maximum
dynamic range. The LTC2393-16 achieves ±2LSB INL max,
no missing codes at 16-bits and 94.2dB SNR (typ).
The LTC2393-16 includes a precision internal reference
with a guaranteed 0.5% initial accuracy and a ±20ppm/°C
(max) temperature coefficient. Fast 1Msps throughput with
no cycle latency in both parallel and serial interface modes
makes the LTC2393-16 ideally suited for a wide variety
of high speed applications. An internal oscillator sets the
conversion time, easing external timing considerations.
The LTC2393-16 dissipates only 140mW at 1Msps, while
both nap and sleep power-down modes are provided to
further reduce power during inactive periods.
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
ANALOG INPUT
0V TO 4.096V
249Ω
LT6350
2200pF
249Ω
SINGLE-ENDED-
TO-DIFFERENTIAL
DRIVER
5V
5V
1.8V TO 5V
10μF
0.1μF
10μF
0.1μF
4.7μF
AVP
IN⁺
DVP
OVP _PARALLEL
OR
SERIAL
16 BIT
INTERFACE
LTC2393-16
SER/PAR
BYTESWAP
IN^–
OB/2C
CS
RD
VCM REFIN REFOUT CNVST PD RESET GND OGND
BUSY
239316 TA01
10μF
1μF _{SAMPLE CLOCK}
16k Point FFT f_S = 1Msps,
f_IN = 20kHz
0
SNR = 94.2dB
–20
THD  –105dB
SINAD = 93.9dB
–40
SFDR = 108dB
–60
–80
–100
–120
–140
–160
–180
0
100 200 300
FREQUENCY (kHz)
400 500
239316 G08
239316f
1