LTC2259-16_15 Datasheet, PDF (1/30 Pages) Linear Technology – 16-Bit, 80Msps Ultralow Power 1.8V ADC

FEATURES
n _{73.1dB SNR}
n _{88dB SFDR}
n _{Low Power: 89mW}
n _{Single 1.8V Supply}
n _{CMOS, DDR CMOS or DDR LVDS Outputs}
n _{Selectable Input Ranges: 1VP-P to 2VP-P}
n _{800MHz Full-Power Bandwidth S/H}
n _{Optional Data Output Randomizer}
n _{Optional Clock Duty Cycle Stabilizer}
n _{Shutdown and Nap Modes}
n _{Serial SPI Port for Configuration}
n _{40-Pin (6mm × 6mm) QFN Package}
APPLICATIONS
n _{Communications}
n _{Cellular Base Stations}
n _{Software Defined Radios}
n _{Portable Medical Imaging}
n _{Multi-Channel Data Acquisition}
n _{Nondestructive Testing}
LTC2259-16
16-Bit, 80Msps Ultralow
Power 1.8V ADC
DESCRIPTION
The LTC^®2259-16 is a sampling 16-bit A/D converter de-
signed for digitizing high frequency, wide dynamic range
signals. It is perfect for demanding communications ap-
plications with AC performance that includes 73.1dB SNR
and 88dB spurious free dynamic range (SFDR). Ultralow
jitter of 0.17ps_RMS allows undersampling of IF frequencies
with excellent noise performance.
DC specs include ±4LSB INL (typical) and ±0.5LSB DNL
(typical).
The digital outputs can be either full-rate CMOS, double-
data rate CMOS, or double-data rate LVDS. A separate
output power supply allows the CMOS output swing to
range from 1.2V to 1.8V.
The ENC⁺ and ENC^– inputs may be driven differentially or
single ended with a sine wave, PECL, LVDS, TTL or CMOS
inputs. An optional clock duty cycle stabilizer allows high
performance at full speed for a wide range of clock duty
cycles.
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
1.8V
V_DD
ANALOG
INPUT
+
INPUT
S/H
–
16-BIT
PIPELINED
ADC CORE
CORRECTION
LOGIC
CLOCK/DUTY
CYCLE
CONTROL
GND
80MHz
CLOCK
OUTPUT
DRIVERS
1.2V
TO 1.8V
OV_DD
D15
• CMOS
• OR
• LVDS
D0
OGND
225916 TA01a
2-Tone FFT, f_IN = 70MHz and 75MHz
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
0
10
20
30
40
FREQUENCY (MHz)
225916 TA01b
225916fa
1