LTC2232 View Datasheet(PDF) - Linear Technology

Part Name

Description

MFG CO.

LTC2232

10-Bit,105Msps/80Msps ADCs

Linear Technology 

FEATURES

■ Sample Rate: 105Msps/80Msps

■ 61dB SNR up to 140MHz Input

■ 75dB SFDR up to 200MHz Input

■ 775MHz Full Power Bandwidth S/H

■ Single 3.3V Supply

■ Low Power Dissipation: 475mW/366mW

■ Selectable Input Ranges: ±0.5V or ±1V

■ No Missing Codes

■ Optional Clock Duty Cycle Stabilizer

■ Shutdown and Nap Modes

■ Data Ready Output Clock

■ Pin Compatible Family

135Msps: LTC2224 (12-Bit), LTC2234 (10-Bit)

105Msps: LTC2222 (12-Bit), LTC2232 (10-Bit)

80Msps: LTC2223 (12-Bit), LTC2233 (10-Bit)

■ 48-Pin 7mm x 7mUm QFN Package

APPLICATIO S

■ Wireless and Wired Broadband Communication

■ Cable Head-End Systems

■ Power Amplifier Linearization

■ Communications Test Equipment

TYPICAL APPLICATIO

REFH

REFL

FLEXIBLE

REFERENCE

3.3V

VDD

ANALOG

INPUT

+

INPUT

S/H

–

10-BIT

PIPELINED

ADC CORE

CORRECTION

LOGIC

CLOCK/DUTY

CYCLE

CONTROL

ENCODE INPUT

LTC2232/LTC2233

10-Bit,105Msps/

80Msps ADCs

DESCRIPTIO

The LTC®2232 and LTC2233 are 105Msps/80Msps, sam-

pling 10-bit A/D converters designed for digitizing high

frequency, wide dynamic range signals. The LTC2232/

LTC2233 are perfect for demanding communications

applications with AC performance that includes 61dB SNR

and 75dB spurious free dynamic range for signals

up to 200MHz. Ultralow jitter of 0.15psRMS allows

undersampling of IF frequencies with excellent noise

performance.

DC specs include ±0.15LSB INL (typ), ±0.1LSB DNL (typ)

and ±0.8LSB INL, ±0.6LSB DNL over temperature. The

transition noise is a low 0.12LSBRMS.

A separate output power supply allows the outputs to drive

0.5V to 3.6V logic.

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.

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

All other trademarks are the property of their respective owners.

OUTPUT

DRIVERS

0.5V

TO 3.6V

OVDD

D9

•

•

•

D0

OGND

22323 TA01

SFDR vs Input Frequency

90

85

4th OR HIGHER

80

75

70

2nd OR 3rd

65

60

55

50

0

100 200 300 400 500 600

INPUT FREQUENCY (MHz) 22323 TA01b

22323fa

1

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