LTC1562 datasheet, PDF - EEWORLD Datasheet

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LTC1562: DescriptionQUAD CONTINUOUS TIME FILTER, RESISTOR PROGRAMMABLE, UNIVERSAL, PDSO20; Categorysemiconductor Analog mixed-signal IC; File Size347KB，29 Pages; ManufacturerLinear ( ADI ); Websitehttp://www.analog.com/cn/index.html

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LTC1562 Overview

QUAD CONTINUOUS TIME FILTER, RESISTOR PROGRAMMABLE, UNIVERSAL, PDSO20

LTC1562 Parametric

Parameter Name	Attribute value
Number of functions	4
Number of terminals	20
Maximum operating temperature	70 Cel
Minimum operating temperature	0.0 Cel
Maximum supply/operating voltage	5 V
Minimum supply/operating voltage	2.5 V
Rated supply voltage	5 V
maximum cutoff frequency	150 kHz
minimum cutoff frequency	10000 Hz
Maximum negative supply voltage	-5 V
Minimum maximum negative supply voltage	-2.5 V
Rated negative supply voltage	-5 V
Processing package description	PLASTIC, SSOP-20
state	ACTIVE
Craftsmanship	CMOS
packaging shape	RECTANGULAR
Package Size	SMALL OUTLINE, SHRINK PITCH
surface mount	Yes
Terminal form	GULL WING
Terminal spacing	0.6500 mm
terminal coating	TIN LEAD
Terminal location	DUAL
Packaging Materials	PLASTIC/EPOXY
Temperature level	COMMERCIAL
poles and zeros	2 AND 0
Band pass type	UNIVERSAL
Active filter type	CONTINUOUS TIME FILTER
Transmission characteristics	RESISTOR PROGRAMMABLE

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LTC1562

Very Low Noise, Low Distortion

Active RC Quad Universal Filter

FEATURES

DESCRIPTIO

Continuous Time—No Clock

Four 2nd Order Filter Sections, 10kHz to 150kHz

Center Frequency

±0.5%

Typical Center Frequency Accuracy

±0.3%

Typical Center Frequency Accuracy (A Grade)

Wide Variety of Response Shapes

Lowpass, Bandpass and Highpass Responses

103dB Typical S/N,

±5V

Supply (Q = 1)

97dB Typical S/N, Single 5V Supply (Q = 1)

96dB Typical S/(N + THD) at

±5V

Supply, 20kHz Input

Rail-to-Rail Input and Output Voltages

DC Accurate to 3mV (Typ)

“Zero-Power” Shutdown Mode

Single or Dual Supply, 5V to 10V Total

Resistor-Programmable f

, Q, Gain

The LTC

1562 is a low noise, low distortion continuous-time

filter with rail-to-rail inputs and outputs, optimized for a

center frequency (f

) of 10kHz to 150kHz. Unlike most

monolithic filters, no clock is needed. Four independent 2nd

order filter blocks can be cascaded in any combination, such

as one 8th order or two 4th order filters. Each block’s

response is programmed with three external resistors for

center frequency, Q and gain, using simple design formulas.

Each 2nd order block provides lowpass and bandpass out-

puts. Highpass response is available if an external capacitor

replaces one of the resistors. Allpass, notch and elliptic

responses can also be realized.

The LTC1562 is designed for applications where dynamic

range is important. For example, by cascading 2nd order

sections in pairs, the user can configure the IC as a dual 4th

order Butterworth lowpass filter with 94dB signal-to-noise

ratio from a single 5V power supply. Low level signals can

exploit the built-in gain capability of the LTC1562. Varying the

gain of a section can achieve a dynamic range as high as

118dB with a

±5V

supply.

Other cutoff frequency ranges can be provided upon request.

Please contact LTC Marketing.

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

APPLICATIO S

High Resolution Systems (14 Bits to 18 Bits)

Antialiasing/Reconstruction Filters

Data Communications, Equalizers

Dual or I-and-Q Channels (Two Matched 4th Order

Filters in One Package)

Linear Phase Filtering

Replacing LC Filter Modules

TYPICAL APPLICATIO

IN1

10k

IN2

, 5.62k

R21, 10k

0.1µF

R23, 10k

IN3

10k

IN1

IN2

, 10k

, 5.62k

INV B

V1 B

V2 B

LTC1562

SHDN

V2 A

V1 A

INV A

Dual 4th Order 100kHz Butterworth Lowpass Filter

INV C

V1 C

V2 C

–

19 R

, 13k

GAIN (dB)

18 R22, 10k

12 R24, 10k

, 13k

1562 TA01

OUT2

–5V

0.1µF

OUT1

SCHEMATIC INCLUDES PIN

NUMBERS FOR 20-PIN PACKAGE.

PINS 4, 7, 14, 17 (NOT SHOWN)

ALSO CONNECT TO V

–

SEE TYPICAL APPLICATIONS

FOR OTHER CUTOFF FREQUENCIES

DC ACCURATE, NONINVERTING,

UNITY-GAIN, RAIL-TO-RAIL

INPUT AND OUTPUTS. PEAK

SNR

≈

100dB WITH

±5V

SUPPLIES

AGND

V2 D

V1 D

INV D

IN4

, 10k

Amplitude Response

–10

–20

–30

–40

–50

–60

–70

–80

10k

100k

FREQUENCY (Hz)

1562 TA03b

1562fa

LTC1562 Related Products

	LTC1562	LTC1562ACG	LTC1562AIG	LTC1562CG	LTC1562IG
Description	QUAD CONTINUOUS TIME FILTER, RESISTOR PROGRAMMABLE, UNIVERSAL, PDSO20	QUAD CONTINUOUS TIME FILTER, RESISTOR PROGRAMMABLE, UNIVERSAL, PDSO20	QUAD CONTINUOUS TIME FILTER, RESISTOR PROGRAMMABLE, UNIVERSAL, PDSO20	QUAD CONTINUOUS TIME FILTER, RESISTOR PROGRAMMABLE, UNIVERSAL, PDSO20	QUAD CONTINUOUS TIME FILTER, RESISTOR PROGRAMMABLE, UNIVERSAL, PDSO20
Number of functions	4	4	4	4	4
Number of terminals	20	20	20	20	20
Maximum operating temperature	70 Cel	70 °C	85 °C	70 °C	85 °C
Minimum operating temperature	0.0 Cel	-	-40 °C	-	-40 °C
surface mount	Yes	YES	YES	YES	YES
Terminal form	GULL WING	GULL WING	GULL WING	GULL WING	GULL WING
Terminal location	DUAL	DUAL	DUAL	DUAL	DUAL
Temperature level	COMMERCIAL	COMMERCIAL	INDUSTRIAL	COMMERCIAL	INDUSTRIAL
poles and zeros	2 AND 0	2 AND 0	2 AND 0	2 AND 0	4 AND 0
Active filter type	CONTINUOUS TIME FILTER	CONTINUOUS TIME FILTER	CONTINUOUS TIME FILTER	CONTINUOUS TIME FILTER	CONTINUOUS TIME FILTER
Brand Name	-	Linear Technology	Linear Technology	Linear Technology	Linear Technology
Is it Rohs certified?	-	incompatible	incompatible	incompatible	incompatible
Maker	-	Linear ( ADI )	Linear ( ADI )	Linear ( ADI )	Linear ( ADI )
Parts packaging code	-	SSOP	SSOP	SSOP	SSOP
package instruction	-	SSOP, SSOP20,.25	SSOP, SSOP20,.25	SSOP, SSOP20,.25	SSOP, SSOP20,.25
Contacts	-	20	20	20	20
Manufacturer packaging code	-	G	G	G	G
Reach Compliance Code	-	not_compliant	not_compliant	_compli	_compli
ECCN code	-	EAR99	EAR99	EAR99	EAR99
Center frequency or cutoff frequency maximum range	-	150 kHz	150 kHz	150 kHz	150 kHz
Center frequency or cutoff frequency minimum range	-	10 kHz	10 kHz	10 kHz	10 kHz
JESD-30 code	-	R-PDSO-G20	R-PDSO-G20	R-PDSO-G20	R-PDSO-G20
JESD-609 code	-	e0	e0	e0	e0
length	-	7.2 mm	7.2 mm	7.2 mm	7.2 mm
Humidity sensitivity level	-	1	1	1	1
Maximum negative supply voltage (Vsup)	-	-5 V	-5 V	-5 V	-5 V
Negative supply voltage minimum (Vsup)	-	-2.5 V	-2.5 V	-2.5 V	-2.5 V
Nominal Negative Supply Voltage (Vsup)	-	-5 V	-5 V	-5 V	-5 V
Order	-	2ND	2ND	2ND	2ND
Package body material	-	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	-	SSOP	SSOP	SSOP	SSOP
Encapsulate equivalent code	-	SSOP20,.25	SSOP20,.25	SSOP20,.25	SSOP20,.25
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	255	255	255
power supply	-	+-5 V	+-5 V	+-5 V	+-5 V
Certification status	-	Not Qualified	Not Qualified	Not Qualified	Not Qualified
response	-	UNIVERSAL	UNIVERSAL	UNIVERSAL	UNIVERSAL
Maximum seat height	-	2 mm	2 mm	2 mm	2 mm
Maximum supply current (Isup)	-	25.5 mA	25.5 mA	25.5 mA	25.5 mA
Maximum supply voltage (Vsup)	-	5 V	5 V	5 V	5 V
Minimum supply voltage (Vsup)	-	2.5 V	2.5 V	2.5 V	2.5 V
Nominal supply voltage (Vsup)	-	5 V	5 V	5 V	5 V
technology	-	CMOS	CMOS	CMOS	CMOS
Terminal surface	-	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)
Terminal pitch	-	0.65 mm	0.65 mm	0.65 mm	0.65 mm
Maximum time at peak reflow temperature	-	40	40	40	40
transfer characteristics	-	RESISTOR PROGRAMMABLE	RESISTOR PROGRAMMABLE	RESISTOR PROGRAMMABLE	RESISTOR PROGRAMMABLE
width	-	5.3 mm	5.3 mm	5.3 mm	5.3 mm

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