LT1568CGN#TR datasheet, PDF - EEWORLD Datasheet

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LT1568CGN#TR: DescriptionIC block build fltr lonos 16ssop; CategoryAnalog mixed-signal IC filter; File Size270KB，16 Pages; ManufacturerLinear ( ADI ); Websitehttp://www.analog.com/cn/index.html

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LT1568CGN#TR Overview

IC block build fltr lonos 16ssop

LT1568CGN#TR Parametric

Parameter Name	Attribute value
Brand Name	Linear Technology
Is it Rohs certified?	incompatible
Maker	Linear ( ADI )
Parts packaging code	SSOP
package instruction	SSOP,
Contacts	16
Manufacturer packaging code	GN
Reach Compliance Code	_compli
ECCN code	EAR99
Active filter type	CONTINUOUS TIME FILTER
Other features	SINGLE 4-POLE OR MATCHED PAIR OF 2-POLE LOWPASS FILTERS; CAN OPERATE FROM SINGLE 5V OR 3V NOM SUPPLY
Center frequency or cutoff frequency maximum range	10000 kHz
Center frequency or cutoff frequency minimum range	200 kHz
JESD-30 code	R-PDSO-G16
JESD-609 code	e0
length	4.8895 mm
Humidity sensitivity level	1
Maximum negative supply voltage (Vsup)	-5.5 V
Negative supply voltage minimum (Vsup)	-1.35 V
Nominal Negative Supply Voltage (Vsup)	-5 V
Number of functions	2
Number of terminals	16
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Package body material	PLASTIC/EPOXY
encapsulated code	SSOP
Package shape	RECTANGULAR
Package form	SMALL OUTLINE, SHRINK PITCH
Peak Reflow Temperature (Celsius)	255
poles and zeros	2 AND 0
Certification status	Not Qualified
response	LOWPASS/BANDPASS
Maximum seat height	1.727 mm
Maximum supply voltage (Vsup)	5.5 V
Minimum supply voltage (Vsup)	1.35 V
Nominal supply voltage (Vsup)	5 V
surface mount	YES
Temperature level	INDUSTRIAL
Terminal surface	Tin/Lead (Sn/Pb)
Terminal form	GULL WING
Terminal pitch	0.635 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	40
transfer characteristics	BUTTERWORTH/BESSEL/CHEBYSHEV
width	3.9 mm

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FEATURES

LT1568

Very Low Noise,

High Frequency Active RC,

Filter Building Block

DESCRIPTIO

The LT

1568 is an easy-to-use, active-RC filter building

block with rail-to-rail inputs and outputs. The internal ca-

pacitors of the IC and the GBW product of the internal low

noise op amps are trimmed such that consistent and repeat-

able filter responses can be achieved. With a single resis-

tor value, the LT1568 provides a pair of

matched

2-pole

Butterworth lowpass filters with unity gain suitable for I/Q

channels.

By using unequal-valued external resistors, the two 2-pole

sections can create different frequency responses or

gains. In addition, the two stages may be cascaded to

create a single 4-pole filter with a programmable re-

sponse. Capable of cutoff frequencies up to 10MHz, the

LT1568 is ideal for antialiasing or channel filtering in high

speed data communications systems. The LT1568 can

also be used as a bandpass filter.

The LT1568 features very low noise, supporting signal-to-

noise ratios of over 90dB. It also provides single-ended to

differential signal conversion for directly driving high

speed A/D converters. The LT1568 has a shutdown mode

that reduces supply current to approximately 0.5mA on a

5V supply.

The LT1568 is available in a narrow 16-lead SSOP

package.

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

Up to 10MHz Center Frequency on a Single 3V

Supply

Easy to Use—A Single Resistor Value Sets Lowpass

Cutoff Frequency (200kHz

≤ ƒ

≤

5MHz), Unequal

Resistor Values Extend Cutoff Frequency Up to

10MHz

Extremely Flexible—Different Resistor Values

Allow Lowpass Transfer Functions with or Without

Gain (Butterworth, Chebyshev or Custom)

SNR = 92dB (ƒ

= 2MHz, 2V

P-P

)

THD = –84dB (ƒ

= 2MHz, 1V

P-P

)

Internal Capacitors Trimmed to

±0.75%

Single 4-Pole Lowpass Filter or

Matched Pair

2-Pole Lowpass Filters

Can be Connected as a Bandpass Filter

Single-Ended or Differential Output

Operates from Single 3V (2.7V Min) to

±5V

Supply

Rail-to-Rail Input and Output Voltages

APPLICATIO S

Replaces Discrete RC Active Filters and LC Filter

Modules

Antialiasing/Reconstruction Filters

Dual or I-and-Q Channels (Two Matched 2nd Order

Filters in One Package)

Single-Ended to Differential Conversion

Video Signal Processing

TYPICAL APPLICATIO

0.1µF

511Ω

INA

OUTA

511Ω

0.1µF 7

Amplitude and Phase Matched Dual Butterworth 2.5MHz Lowpass

Filter with Differential Output. Single 3V Supply Operation

LT1568

INVA

INVB

OUTA

OUTB

OUTA

OUTB

GNDA GNDB

–

Amplitude Response

–3

511Ω

GAIN (dB)

–6

INB

OUTB

511Ω

OUTB

THE PROPRIETARY ARCHITECTURE

ALLOWS FOR A SIMPLE RESISTOR

CALCULATION:

10MHz

R = 128Ω •

;

= CUTOFF FREQUENCY

–9

–12

–15

–18

–21

–24

–27

100k

FREQUENCY (Hz)

10M

1568 TA02

1568 TA01

1568f

LT1568CGN#TR Related Products

	LT1568CGN#TR	LT1568CGN#TRPBF	LT1568IGN#TRPBF	LT1568IGN#PBF
Description	IC block build fltr lonos 16ssop	IC BLOCK BUILD FLTR LONOS 16SSOP	IC BLOCK BUILD FLTR LONOS 16SSOP	IC BLOCK BUILD FLTR LONOS 16SSOP
Brand Name	Linear Technology	Linear Technology	Linear Technology	Linear Technology
Is it Rohs certified?	incompatible	conform to	conform to	conform to
Maker	Linear ( ADI )	Linear ( ADI )	Linear ( ADI )	Linear ( ADI )
Parts packaging code	SSOP	SSOP	SSOP	SSOP
package instruction	SSOP,	SSOP,	SSOP,	SSOP, SSOP16,.25
Contacts	16	16	16	16
Manufacturer packaging code	GN	GN	GN	GN
Reach Compliance Code	_compli	compliant	compliant	compliant
ECCN code	EAR99	EAR99	EAR99	EAR99
Active filter type	CONTINUOUS TIME FILTER	CONTINUOUS TIME FILTER	CONTINUOUS TIME FILTER	CONTINUOUS TIME FILTER
Other features	SINGLE 4-POLE OR MATCHED PAIR OF 2-POLE LOWPASS FILTERS; CAN OPERATE FROM SINGLE 5V OR 3V NOM SUPPLY	SINGLE 4-POLE OR MATCHED PAIR OF 2-POLE LOWPASS FILTERS; CAN OPERATE FROM SINGLE 5V OR 3V NOM SUPPLY	SINGLE 4-POLE OR MATCHED PAIR OF 2-POLE LOWPASS FILTERS; CAN OPERATE FROM SINGLE 5V OR 3V NOM SUPPLY	SINGLE 4-POLE OR MATCHED PAIR OF 2-POLE LOWPASS FILTERS; CAN OPERATE FROM SINGLE 5V OR 3V NOM SUPPLY
Center frequency or cutoff frequency maximum range	10000 kHz	10000 kHz	10000 kHz	10000 kHz
Center frequency or cutoff frequency minimum range	200 kHz	200 kHz	200 kHz	200 kHz
JESD-30 code	R-PDSO-G16	R-PDSO-G16	R-PDSO-G16	R-PDSO-G16
JESD-609 code	e0	e3	e3	e3
length	4.8895 mm	4.8895 mm	4.8895 mm	4.8895 mm
Humidity sensitivity level	1	1	1	1
Maximum negative supply voltage (Vsup)	-5.5 V	-5.5 V	-5.5 V	-5.5 V
Negative supply voltage minimum (Vsup)	-1.35 V	-1.35 V	-1.35 V	-1.35 V
Nominal Negative Supply Voltage (Vsup)	-5 V	-5 V	-5 V	-5 V
Number of functions	2	2	2	2
Number of terminals	16	16	16	16
Maximum operating temperature	85 °C	85 °C	85 °C	85 °C
Minimum operating temperature	-40 °C	-40 °C	-40 °C	-40 °C
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	SSOP	SSOP	SSOP	SSOP
Package shape	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR
Package form	SMALL OUTLINE, SHRINK PITCH	SMALL OUTLINE, SHRINK PITCH	SMALL OUTLINE, SHRINK PITCH	SMALL OUTLINE, SHRINK PITCH
Peak Reflow Temperature (Celsius)	255	260	260	260
poles and zeros	2 AND 0	2 AND 0	2 AND 0	2 AND 0
Certification status	Not Qualified	Not Qualified	Not Qualified	Not Qualified
response	LOWPASS/BANDPASS	LOWPASS/BANDPASS	LOWPASS/BANDPASS	LOWPASS/BANDPASS
Maximum seat height	1.727 mm	1.727 mm	1.727 mm	1.727 mm
Maximum supply voltage (Vsup)	5.5 V	5.5 V	5.5 V	5.5 V
Minimum supply voltage (Vsup)	1.35 V	1.35 V	1.35 V	1.35 V
Nominal supply voltage (Vsup)	5 V	5 V	5 V	5 V
surface mount	YES	YES	YES	YES
Temperature level	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL
Terminal surface	Tin/Lead (Sn/Pb)	Matte Tin (Sn)	Matte Tin (Sn)	Matte Tin (Sn)
Terminal form	GULL WING	GULL WING	GULL WING	GULL WING
Terminal pitch	0.635 mm	0.635 mm	0.635 mm	0.635 mm
Terminal location	DUAL	DUAL	DUAL	DUAL
Maximum time at peak reflow temperature	40	30	30	30
transfer characteristics	BUTTERWORTH/BESSEL/CHEBYSHEV	BUTTERWORTH/BESSEL/CHEBYSHEV	BUTTERWORTH/BESSEL/CHEBYSHEV	BUTTERWORTH/BESSEL/CHEBYSHEV
width	3.9 mm	3.9 mm	3.9 mm	3.9 mm

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