LTC2107_15 Datasheet, PDF (1/32 Pages) Linear Technology – 16-Bit, 210Msps High Performance ADC

FEATURES
n _{98dBFS SFDR}
n _{80dBFS SNR Noise Floor}
n _{Aperture Jitter = 45fsRMS}
n _{PGA Front-End 2.4VP-P or 1.6VP-P Input Range}
n _{Optional Internal Dither}
n _{Optional Data Output Randomizer}
n _{Power Dissipation: 1280mW}
n _{Shutdown Mode}
n _{Serial SPI Port for Configuration}
n _{Clock Duty Cycle Stabilizer}
n _{48-Lead (7mm × 7mm) QFN Package}
APPLICATIONS
n _{Software Defined Radios}
n _{Military Radio and RADAR}
n _{Cellular Base Stations}
n _{Spectral Analysis}
n _{Imaging Systems}
n _{ATE and Instrumentation}
LTC2107
16-Bit, 210Msps
High Performance ADC
DESCRIPTION
The LTC^®2107 is a 16-bit, 210Msps high performance ADC.
The combination of high sample rate, low noise and high
linearity enable a new generation of digital radio designs.
The direct sampling front-end is designed specifically for
the most demanding receiver applications such as software
defined radio and multi-channel GSM base stations. The
AC performance includes, SNR = 80dBFS, SFDR = 98dBFS.
Aperture jitter = 45fs_RMS allows direct sampling of IF
frequencies up to 500MHz with excellent performance.
Features such as internal dither, a PGA front-end and
digital output randomization help maximize performance.
Modes of operation can be controlled through a 3-wire
serial interface (SPI).
The double data rate (DDR) low voltage differential (LVDS)
digital outputs help reduce digital line count and enable
space saving designs.
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.
Protected by U.S. Patents, including 7683695, 8482442, 8648741.
BLOCK DIAGRAM
0V
2.5V
10µF
V_CM
V_CM
V_CM
DRIVER
2.2µF
ANALOG
INPUT
A_{IN+ +}
INPUT
A_IN–
S/H
–
CLOCK AND
CLOCK CONTROL
ENC⁺ ENC^–
SENSE
INTERNAL
REFERENCE
16-BIT
ADC CORE
V_DD
OV_DD
CORRECTION ¹⁶ OUTPUT
LOGIC
BUFFERS
OF^±
CLKOUT^±
OGND
ADC CONTROL/SPI INTERFACE
SER/PAR SDI SCK CS SDO SHDN
GND
2107 BD
1.8V
1µF
D14_15±
•••
D0_1±
128k Point FFT,
f_IN = 30.6MHz, –1dBFS, PGA = 0
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
–130
–140
0
15 30 45 60 75 90 105
FREQUENCY (MHz)
2107 TA01
2107f
For more information www.linear.com/LTC2107
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