LTC1745IFW#PBF datasheet, PDF - EEWORLD Datasheet

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LTC1745IFW#PBF: DescriptionIC ADC 12BIT 25MSPS LN 48TSSOP; CategoryAnalog mixed-signal IC converter; File Size232KB，20 Pages; ManufacturerLinear ( ADI ); Websitehttp://www.analog.com/cn/index.html; Environmental Compliance

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LTC1745IFW#PBF Overview

IC ADC 12BIT 25MSPS LN 48TSSOP

LTC1745IFW#PBF Parametric

Parameter Name	Attribute value
Brand Name	Linear Technology
Is it Rohs certified?	conform to
Maker	Linear ( ADI )
Parts packaging code	TSSOP
package instruction	TSSOP, TSSOP48,.3,20
Contacts	48
Manufacturer packaging code	FW
Reach Compliance Code	compliant
ECCN code	3A991.C.2
Is Samacsys	N
Maximum analog input voltage	1.6 V
Minimum analog input voltage	-1.6 V
Converter type	ADC, PROPRIETARY METHOD
JESD-30 code	R-PDSO-G48
JESD-609 code	e3
length	12.5 mm
Maximum linear error (EL)	0.0244%
Humidity sensitivity level	1
Number of analog input channels	1
Number of digits	12
Number of functions	1
Number of terminals	48
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Output bit code	OFFSET BINARY, 2'S COMPLEMENT BINARY
Output format	PARALLEL, WORD
Package body material	PLASTIC/EPOXY
encapsulated code	TSSOP
Encapsulate equivalent code	TSSOP48,.3,20
Package shape	RECTANGULAR
Package form	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)	250
power supply	5 V
Certification status	Not Qualified
Sampling rate	25 MHz
Sample and hold/Track and hold	SAMPLE
Maximum seat height	1.2 mm
Nominal supply voltage	5 V
surface mount	YES
technology	CMOS
Temperature level	INDUSTRIAL
Terminal surface	Matte Tin (Sn)
Terminal form	GULL WING
Terminal pitch	0.5 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	40
width	6.1 mm
Base Number Matches	1

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LTC1745

Low Noise,12-Bit, 25Msps ADC

FEATURES

DESCRIPTIO

Sample Rate: 25Msps

72.5dB SNR and 91dB SFDR (3.2V Range)

71dB SNR and 96dB SFDR (2V Range)

No Missing Codes

Single 5V Supply

Low Power Dissipation: 380mW

Selectable Input Ranges:

±1V

±1.6V

240MHz Full Power Bandwidth S/H

Pin Compatible Family

25 Msps: LTC1746 (14-Bit), LTC1745 (12-Bit)

50 Msps: LTC1744 (14-Bit), LTC1743 (12-Bit)

65 Msps: LTC1742 (14-Bit), LTC1741 (12-Bit)

80 Msps: LTC1748 (14-Bit), LTC1747 (12-Bit)

The LTC

1745 is a 25Msps, sampling 12-bit A/D con-

verter designed for digitizing high frequency, wide dy-

namic range signals. Pin selectable input ranges of

±1V

and

±1.6V

along with a resistor programmable mode

allow the LTC1745’s input range to be optimized for a wide

variety of applications.

The LTC1745 is perfect for demanding communications

applications with AC performance that includes 72.5dB

SNR and 91dB spurious free dynamic range. Ultralow jitter

of 0.3ps

RMS

allows undersampling with excellent noise

performance. DC specs include

±1LSB

INL maximum and

±0.75LSB

DNL over temperature.

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

systems. The ENC and ENC inputs may be driven differen-

tially 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 digital

output power supply can be operated from 0.5V to 5V,

making it easy to connect directly to low voltage DSPs

or FIFOs.

The TSSOP package with a flow-through pinout simplifies

the board layout.

APPLICATIO S

Telecommunications

Medical Imaging

Receivers

Base Stations

Spectrum Analysis

Imaging Systems

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

BLOCK DIAGRA

±1V

DIFFERENTIAL

ANALOG INPUT

25Msps, 12-Bit ADC with a

±1V

Differential Input Range

D11

CLKOUT

0.1µF

0.5V TO 5V

0.1µF

IN–

S/H

AMP

12-BIT

PIPELINED ADC

SENSE

BUFFER

RANGE

SELECT

DIFF AMP

GND

CONTROL LOGIC

1745 BD

4.7µF

2.35V

REF

REFLB

0.1µF

1µF

REFHA

4.7µF

REFLA

REFHB

ENC

0.1µF

1µF

DIFFERENTIAL

ENCODE INPUT

OUTPUT

LATCHES

•

OGND

1µF

MSBINV

1745f

LTC1745IFW#PBF Related Products

	LTC1745IFW#PBF	LTC1745CFW#TR	LTC1745IFW#TR	LTC1745CFW#TRPBF	LTC1745IFW#TRPBF	LTC1745CFW#PBF
Description	IC ADC 12BIT 25MSPS LN 48TSSOP	IC adc smpl 12bit 25msps 48tssop	IC adc smpl 12bit 25msps 48tssop	IC ADC 12BIT 25MSPS LN 48TSSOP	IC ADC 12BIT 25MSPS LN 48TSSOP	IC ADC 12BIT 25MSPS LN 48TSSOP
Number of digits	12	-	-	12	12	12

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