1

2271f

LTC2271

APPLICATIONS

TYPICAL APPLICATION

DESCRIPTION

16-Bit, 20Msps

Serial Low Noise Dual ADC

The LTC

16-bit A/D converter designed for digitizing high frequency,

wide dynamic range signals. It is perfect for demanding

communications applications with AC performance that

includes 84.1dB SNR and 99dB spurious free dynamic

range (SFDR).

DC specs include ±1LSB INL (typ), ±0.2LSB DNL (typ)

and no missing codes over temperature. The transition

To minimize the number of data lines the digital outputs

are serial LVDS. Each channel outputs one bit, two bits or

four bits at a time. The LVDS drivers have optional internal

termination and adjustable output levels to ensure clean

signal integrity.

single ended with a sine wave, PECL, LVDS, TTL or CMOS

inputs. An internal clock duty cycle stabilizer allows high

performance at full speed for a wide range of clock duty

cycles.

FEATURES

LTC2190: 16-Bit, 25Msps, 104mW

16-BIT

ADC CORE

CH1

ANALOG

INPUT

CH2

ANALOG

INPUT

ENCODE

INPUT

S/H

16-BIT

ADC CORE

OUT1A

OUT1B

OUT1C

OUT1D

OUT2A

OUT2B

OUT2C

OUT2D

DATA CLOCK OUT

FRAME

S/H

DATA

SERIALIZER

PLL

OGND

2271 TA01

SERIALIZED

LVDS

OUTPUTS

GND

1.8V

1.8V

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.

Integral Non-Linearity (INL)

OUTPUT CODE

0

–2.0

–1.5

–1.0

–0.5

0.5

0.0

1.0

1.5

2.0

16384

32768

49152

65536

2271 TA02