LTC1749 datasheet(1/20 Pages) LINER

Nome de Peças	LTC1749

Descrição Electrónicos	12-Bit, 80Msps Wide Bandwidth ADC

PDF	20 Pages

Scroll/Zoom	100%

Fabricante Electrônico	LINER [Linear Technology]

Página de início	http://www.linear.com

Logo

1 / 20 page

1

LTC1749

1749f

12-Bit, 80Msps

Wide Bandwidth ADC

s

Sample Rate: 80Msps

s

PGA Front End (2.25VP-P or 1.35VP-P Input Range)

s

71.8dB SNR and 87dB SFDR (PGA = 0)

s

70.2dB SNR and 87dB SFDR (PGA = 1)

s

500MHz Full Power Bandwidth S/H

s

No Missing Codes

s

Single 5V Supply

s

Power Dissipation: 1.45W

s

Two Pin Selectable Reference Values

s

Data Ready Output Clock

s

Pin Compatible 14-Bit 80Msps Device (LTC1750)

s

48-Pin TSSOP Package

s

Direct IF Sampling

s

Telecommunications

s

Receivers

s

Cellular Base Stations

s

Spectrum Analysis

s

Communications Test Equipment

s

Undersampling

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

The LTC

®1749 is an 80Msps, 12-bit A/D converter de-

signed for digitizing wide dynamic range signals up to

frequencies of 500MHz. The input range of the ADC can be

optimized with the on-chip PGA sample-and-hold circuit

and flexible reference circuitry.

The LTC1749 has a highly linear sample-and-hold circuit

with a bandwidth of 500MHz. The SFDR is 80dB with an

input frequency of 250MHz. Ultralow jitter of 0.15psRMS

allows undersampling of IF frequencies with minimal

degradation in SNR. DC specs include

±1LSB INL and no

missing codes.

The digital interface is compatible with 5V, 3V, 2V and

LVDS logic systems. The ENC and ENC inputs may be

driven differentially from PECL, GTL and other low swing

logic families or from single-ended TTL or CMOS. The low

noise, high gain ENC and ENC inputs may also be driven

by a sinusoidal signal without degrading performance. A

separate output power supply can be operated from 0.5V

to 5V, making it easy to connect directly to low voltage

DSPs or FIFOs.

The 48-pin TSSOP package with a flow-through pinout

simplifies the board layout.

80Msps, 12-Bit ADC with a 2.25V Differential Input Range

DESCRIPTIO

FEATURES

APPLICATIO S

BLOCK DIAGRA

12-BIT

PIPELINED ADC

12

S/H

CIRCUIT

±1.125V

DIFFERENTIAL

ANALOG INPUT

AIN

+

PGA

AIN

–

SENSE

VCM

4.7

µF

DIFF AMP

REFLA

REFHB

GND

1749 BD

ENC

4.7

µF

1

µF1µF

0.1

µF

0.1

µF

REFHA

REFLB

BUFFER

RANGE

SELECT

2VREF

CORRECTION

LOGIC AND

SHIFT

REGISTER

OUTPUT

LATCHES

CONTROL LOGIC

OVDD

VDD

OGND

0.5V TO 5V

5V

0.1

µF

1

µF

1

µF

1

µF

D11

D0

CLKOUT

•

ENC

DIFFERENTIAL

ENCODE INPUT

MSBINV

0.1

µF

Nº de peça semelhante - LTC1749

Fabricante Electrônico	Nome de Peças	Folha de dados	Descrição Electrónicos
Linear Technology	LTC1749	287Kb / 20P	12-Bit, 80Msps Wide Bandwidth ADC

More results

Descrição semelhante - LTC1749

Fabricante Electrônico	Nome de Peças	Folha de dados	Descrição Electrónicos
Maxim Integrated Produc...	MAX12528	426Kb / 28P	Dual, 80Msps, 12-Bit, IF/Baseband ADC Rev 0; 4/05
Linear Technology	LTC1747	491Kb / 20P	12-Bit, 80Msps Low Noise ADC
	LTC1750	281Kb / 20P	14-Bit, 80Msps Wide Bandwidth ADC
	LTC2229	552Kb / 24P	12-Bit, 80Msps Low Power 3V ADC
	LTC1749	287Kb / 20P	12-Bit, 80Msps Wide Bandwidth ADC
	LTC1747	497Kb / 20P	12-Bit, 80Msps Low Noise ADC
	LTC1750	286Kb / 20P	14-Bit, 80Msps Wide Bandwidth ADC
	LTC2229	558Kb / 24P	12-Bit, 80Msps Low Power 3V ADC
Maxim Integrated Produc...	MAX1208	1Mb / 27P	12-Bit, 80Msps, 3.3V ADC 2004
Maxim Integrated Produc...	MAX1209	372Kb / 27P	12-Bit, 80Msps, 3.3V IF-Sampling ADC 2004

More results

LTC1749 Folha de dados(PDF) 1 Page - Linear Technology

LTC1749 Folha de dados(HTML) 1 Page - Linear Technology

Nº de peça semelhante - LTC1749

Descrição semelhante - LTC1749

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

Folha de dados Download

Ligação URL