LTC2207_15 Datasheet, PDF (1/32 Pages) Linear Technology – 16-Bit, 105Msps/80Msps ADCs

FEATURES
■ _{Sample Rate: 105Msps/80Msps}
■ _{78.2dBFS Noise Floor}
■ _{100dB SFDR}
■ _{SFDR >82dB at 250MHz (1.5VP-P Input Range)}
■ _{PGA Front End (2.25VP-P or 1.5VP-P Input Range)}
■ _{700MHz Full Power Bandwidth S/H}
■ _{Optional Internal Dither}
■ _{Optional Data Output Randomizer}
■ _{Single 3.3V Supply}
■ _{Power Dissipation: 900mW/725mW}
■ _{Optional Clock Duty Cycle Stabilizer}
■ _{Out-of-Range Indicator}
■ _{Pin-Compatible Family}
105Msps: LTC2207 (16-Bit), LTC2207-14 (14-Bit)
80Msps: LTC2206 (16-Bit), LTC2206-14 (14-Bit)
65Msps: LTC2205 (16-Bit), LTC2205-14 (14-Bit)
40Msps: LTC2204 (16-Bit)
25Msps: LTC2203 (16-Bit) Single-Ended Clock
10Msps: LTC2202 (16-Bit) Single-Ended Clock
■ _{48-Pin 7mm × 7mm QFN Package}
APPLICATIONS
■ _{Telecommunications}
■ _Receivers
■ _{Cellular Base Stations}
■ _{Spectrum Analysis}
■ _{Imaging Systems}
■ _ATE
LTC2207/LTC2206
16-Bit, 105Msps/80Msps
ADCs
DESCRIPTION
The LTC^®2207/LTC2206 are 105Msps/80Msps, sampling
16-bit A/D converters designed for digitizing high fre-
quency, wide dynamic range signals up to input frequencies
of 700MHz. The input range of the ADC can be optimized
with the PGA front end.
The LTC2207/LTC2206 are perfect for demanding com-
munications applications, with AC performance that
includes 78.2dB Noise Floor and 100dB spurious free
dynamic range (SFDR). Ultralow jitter of 80fs_RMS allows
undersampling of high input frequencies with excellent
noise performance. Maximum DC specs include ±4LSB
INL, ±1LSB DNL (no missing codes) over temperature.
A separate output power supply allows the CMOS output
swing to range from 0.5V to 3.6V.
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 al-
lows high performance at full speed with 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
3.3V
SENSE
V_CM
2.2μF
1.25V
COMMON MODE
BIAS VOLTAGE
INTERNAL ADC
REFERENCE
GENERATOR
OV_DD
AIN⁺
ANALOG
INPUT
AIN^–
+
S/H
AMP
–
CLOCK/DUTY
CYCLE
CONTROL
ENC⁺ ENC^–
16-BIT
PIPELINED
ADC CORE
CORRECTION
LOGIC AND
SHIFT REGISTER
OUTPUT
DRIVERS
OGND
V_DD
GND
PGA SHDN DITH MODE OE
ADC CONTROL INPUTS
RAND
0.5V TO 3.6V
0.1μF
OF
CLKOUT⁺
CLKOUT^–
D15
•
•
•
D0
0.1μF
0.1μF
3.3V
0.1μF
22076 TA01
LTC2207: 64K Point FFT,
f_IN = 14.8MHz, –1dBFS,
PGA = 0, 105Msps
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
–130
0
10
20
30
40
50
FREQUENCY (MHz)
22076 G05
22076fc
1