LTC2392-16 Datasheet, PDF (1/24 Pages) Linear Technology – 16-Bit, 500ksps SAR ADC with 94dB SNR

Features
n _{500ksps Throughput Rate}
n _{±2LSB INL (Max)}
n _{Guaranteed 16-Bit No Missing Codes}
n _{94dB SNR (Typ) at fIN = 20kHz}
n _{Guaranteed Operation to 125°C}
n _{Single 5V Supply}
n _{1.8V to 5V I/O Voltages}
n _{110mW 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
LTC2392-16
16-Bit, 500ksps SAR ADC
with 94dB SNR
Description
The LTC^®2392-16 is a low noise, high speed 16-bit suc-
cessive approximation register (SAR) ADC. Operating
from a single 5V supply, the LTC2392-16 supports a large
±4.096V fully differential input range, making it ideal for
high performance applications which require maximum
dynamic range. The LTC2392-16 achieves ±2LSB INL max,
no missing codes at 16-bits and 94dB SNR (typ).
The LTC2392-16 includes a precision internal reference
with a guaranteed 0.5% initial accuracy and a ±20ppm/°C
(max) temperature coefficient. Fast 500ksps throughput
with no cycle latency in both parallel and serial interface
modes makes the LTC2392-16 ideally suited for a wide va-
riety of high speed applications. An internal oscillator sets
the conversion time, easing external timing considerations.
The LTC2392-16 dissipates only 110mW at 500ksps, while
both nap and sleep power-down modes are provided to
further reduce power during inactive periods.
L, LT, LTC and LTM 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
LTC2392-16
SER/PAR
BYTESWAP
IN^–
OB/2C
CS
RD
VCM REFIN REFOUT CNVST PD RESET GND OGND
BUSY
239216 TA01
10µF
1µF _{SAMPLE CLOCK}
16k Point FFT f_S = 500ksps,
f_IN = 20kHz
0
SNR = 94dB
–20
THD  –103dB
SINAD = 93.5dB
–40
SFDR = 104dB
–60
–80
–100
–120
–140
–160
–180
0
50 100 150 200 250
FREQUENCY (kHz)
239216 G08
239216f