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LTC2206IUK-14

14-Bit, 105Msps/80Msps ADCs

Linear Technology 

FEATURES

■ Sample Rate: 105Msps/80Msps

■ 77.3dBFS Noise Floor

■ 98dB 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: 947mW/762mW

■ 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

U

APPLICATIO S

■ Telecommunications

■ Receivers

■ Cellular Base Stations

■ Spectrum Analysis

■ Imaging Systems

■ ATE

LTC2207-14/LTC2206-14

14-Bit, 105Msps/80Msps

ADCs

DESCRIPTIO

The LTC®2207-14/LTC2206-14 are 105Msps/80Msps,

sampling 14-bit A/D converters designed for digitizing

high frequency, 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 LTC2207-14/LTC2206-14 are perfect for demanding

communications applications, with AC performance that

includes 77.3dB SNR and 98dB spurious free dynamic

range (SFDR). Ultralow jitter of 80fsRMS allows under-

sampling of high input frequencies with excellent noise

performance. Maximum DC specs include ±1.5LSB 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.

, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.

All other trademarks are the property of their respective owners. Patents Pending.

TYPICAL APPLICATIO

3.3V

SENSE

VCM

2.2µF

1.25V

COMMON MODE

BIAS VOLTAGE

INTERNAL ADC

REFERENCE

GENERATOR

OVDD

AIN+

ANALOG

INPUT

AIN–

+

S/H

AMP

–

CLOCK/DUTY

CYCLE

CONTROL

ENC+ ENC–

14-BIT

PIPELINED

ADC CORE

CORRECTION

LOGIC AND

SHIFT REGISTER

OUTPUT

DRIVERS

OGND

VDD

GND

PGA SHDN DITH MODE OE

ADC CONTROL INPUTS

RAND

0.5V TO 3.6V

0.1µF

OF

CLKOUT+

CLKOUT–

D13

•

•

•

D0

0.1µF

0.1µF

3.3V

0.1µF

22076 TA01

LTC2207-14: 32K Point FFT,

fIN = 14.86MHz, –1dBFS,

PGA = 0, 105Msps

0

–10

–20

–30

–40

–50

–60

–70

–80

–90

–100

–110

–120

0

10

20

30

40

50

FREQUENCY (MHz)

22076 TA01b

220714614fa

1

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