LTC1067CS#PBF Linear Technology, LTC1067CS#PBF Datasheet

IC FILTR BLDNGBLK R-R DUAL16SOIC

LTC1067CS#PBF

Manufacturer Part Number
LTC1067CS#PBF
Description
IC FILTR BLDNGBLK R-R DUAL16SOIC
Manufacturer
Linear Technology
Datasheet

Specifications of LTC1067CS#PBF

Filter Type
Universal Switched Capacitor
Frequency - Cutoff Or Center
20kHz
Number Of Filters
2
Max-order
4th
Voltage - Supply
3 V ~ 11 V, ±3 V ~ 5.5 V
Mounting Type
Surface Mount
Package / Case
16-SOIC (3.9mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LTC1067CS#PBFLTC1067CS
Manufacturer:
LINEAR/凌特
Quantity:
20 000
Company:
Part Number:
LTC1067CS#PBF
Manufacturer:
LTC
Quantity:
717
Company:
Part Number:
LTC1067CS#PBF
Manufacturer:
LINEAR/凌特
Quantity:
20 000
APPLICATIONS
FEATURES
TYPICAL
IN
, LTC and LT are registered trademarks of Linear Technology Corporation.
Rail-to-Rail Input and Output Operation
Operates from a Single 3V to 5V Supply
Dual 2nd Order Filter in a 16-Lead SSOP Package
> 80dB Dynamic Range on Single 3.3V Supply
Clock-to-Center Frequency Ratio of 100:1 for the
LTC1067 and 50:1 for the LTC1067-50
Internal Sampling-to-Center Frequency Ratio of
200:1 for the LTC1067 and 100:1 for the LTC1067-50
Center Frequency Error < 0.2% Typ
Low Noise: < 40 V
Customizable with Internal Resistors
Notch Filters
Narrowband Bandpass Filters
Tone Detection
Noise Reduction Systems
200k
R11
3.3V
0.1 F
R31, 200k
R21, 10k
4th Order, 10kHz Bandpass Filter
Single 3.3V Supply Rail-to-Rail,
APPLICATION
1
2
3
4
5
6
7
8
U
V
NC
V
SA
LPA
BPA
HPA/NA
INV A
+
+
RMS
LTC1067-50
, Q 5
HPB/NB
AGND
INV B
RB1, 200k
BPB
CLK
LPB
SB
V
U
16
15
14
13
12
11
10
9
f
CLK
R32, 200k
R22, 10k
= 500kHz
1067 TA01
1 F
OUT
TOTAL OUTPUT NOISE: 90 V
S/N RATIO: 80dB
Universal Dual Filter Building Block
DESCRIPTION
The LTC
to-rail, high accuracy and very wide dynamic range 2nd
order switched-capacitor building blocks. Each building
block, together with three to five resistors, provides 2nd
order filter functions such as bandpass, highpass, lowpass,
notch and allpass. High precision 4th order filters are
easily designed.
The center frequency of each 2nd order section is tuned by
the external clock frequency. The internal clock-to-center
frequency ratio (100:1 for the LTC1067 and 50:1 for the
LTC1067-50) can be modified by the external resistors.
These devices have a double sampled architecture which
places aliasing and imaging components at twice the clock
frequency. The LTC1067-50 is a low power device con-
suming about one half the current of the LTC1067. The
LTC1067-50’s typical supply current is about 1mA from a
3.3V supply.
The LTC1067 and LTC1067-50 are available in 16-pin
narrow SSOP and SO packages.
Mask programmable versions of the LTC1067 and
LTC1067-50, with thin film resistors on-chip and custom
clock-to-cutoff frequency ratios, can be designed in an
SO-8 package to realize application specific monolithic
filters. Please contact LTC Marketing for more details.
RMS
Rail-to-Rail, Very Low Noise
®
1067/LTC1067-50 consist of two identical rail-
–10
–20
–30
–40
LTC1067/LTC1067-50
0
8
U
Frequency Response
9
FREQUENCY (kHz)
10
11
1067 • TA02
12
1

Related parts for LTC1067CS#PBF

LTC1067CS#PBF Summary of contents

Page 1

... Center Frequency Error < 0.2% Typ Low Noise: < RMS Customizable with Internal Resistors U APPLICATIONS Notch Filters Narrowband Bandpass Filters Tone Detection Noise Reduction Systems , LTC and LT are registered trademarks of Linear Technology Corporation. U TYPICAL APPLICATION Single 3.3V Supply Rail-to-Rail, 4th Order, 10kHz Bandpass Filter CLK ...

Page 2

LTC1067/LTC1067- ABSOLUTE MAXIMUM + – Total Voltage Supply ( .............................. 12V + Input Voltage ........................ (V + 0.3V Output Short-Circuit Duration .......................... Indefinite Power Dissipation ............................................... 500mV Operating Temperature Range LTC1067C ............................................... ...

Page 3

ELECTRICAL CHARACTERISTICS LTC1067 (complete filter 4.75V CLK PARAMETER CONDITIONS Q Accuracy 4.75V 5V Temperature Coefficient O Q Temperature Coefficient DC Offset Voltage ...

Page 4

LTC1067/LTC1067-50 ELECTRICAL CHARACTERISTICS LTC1067-50 (complete filter 4.75V PARAMETER CONDITIONS f Temperature Coefficient O Q Temperature Coefficient DC Offset Voltage (See Table 2) V (DC Offset of Input Inverter) OS1 V (DC Offset of First Integrator) OS2 ...

Page 5

W U TYPICAL PERFORMANCE CHARACTERISTICS LTC1067 Noise + THD vs Input Frequency –75 MODE 1 –80 MODE 3 –85 4TH ORDER BUTTERWORTH LPF V = SINGLE 5V 500kHz S CLK 5kHz ...

Page 6

LTC1067/LTC1067- TYPICAL PERFORMANCE CHARACTERISTICS LTC1067-50 Noise + THD vs Input Voltage –20 4TH ORDER BUTTERWORTH LPF – SINGLE 5V 1kHz 250kHz 5kHz CLK –3dB – 20k ...

Page 7

W U TYPICAL PERFORMANCE CHARACTERISTICS LTC1067/LTC1067-50 Mode 1B Noise Increase vs R5/R6 Ratio 2.0 1.9 1.8 1.7 1.6 1.5 1.4 1.3 1.2 1.1 1.0 0 0.5 1.0 1.5 2.0 R5/R6 RATIO PIN FUNCTIONS + – ...

Page 8

LTC1067/LTC1067- PIN FUNCTIONS SA, SB (Pins 4, 13): Summing Inputs. The summing pins’ connection, along with the other resistor connections, determine the circuit topology (mode) of each 2nd order section. These pins should never be left floating. ...

Page 9

... For a complete listing of all the operating modes, consult the appendices of the FilterCAD manual or the Help files in FilterCAD. FilterCAD can be obtained free of charge on the Linear Technology web site (http:// www.linear-tech.com) or you can order the FilterCAD CD-ROM by contacting Linear Technology’s marketing department ...

Page 10

LTC1067/LTC1067-50 W ODES OF OPERATIO – V – CLK (R6 + R5) RATIO AGND ( ...

Page 11

W ODES OF OPERATIO Mode 3a This is an extension of Mode 3 where the highpass and lowpass outputs are summed through two external resis- tors, R and create a notch (see Figure 7). Mode 3a H ...

Page 12

LTC1067/LTC1067- APPLICATIONS INFORMATION A switched-capacitor integrator generally exhibits a higher input offset than a discrete RC integrator. The larger offset is mainly due to the charge injection from the CMOS switches into the integrated capacitor. The integrator’s op ...

Page 13

U U APPLICATIONS INFORMATION Aliasing Aliasing is an inherent phenomenon of switched-capacitor filters and occurs when the frequency of the input signals that produce the strongest aliased components have a frequency such as (f – SAMPLING ...

Page 14

LTC1067/LTC1067- APPLICATIONS INFORMATION 5.0 4.5 LTC1067 4.0 LTC1067-50 3.5 3.0 2 LOAD RESISTANCE ( Figure 11. LTC1067/LTC1067-50 Positive Output Voltage Swing vs Load Resistance, 5V ...

Page 15

... Figure 14. Power and AGND Connections for 3V/3.3V ADC with 2.048V Full Scale Semi-Custom Filter Program Linear Technology has in place a program to deliver fully integrated filters, custom designed for any specified appli- cation. These semi-custom filters are based on an existing universal filter product with integrated, on-chip resistors. ...

Page 16

LTC1067/LTC1067- APPLICATIONS INFORMATION This would be used for operating Mode 3. Here resistor in the R61 position also works. Jumpers JP52 and JP62 perform the same functions on the B side of the part. The buffering ...

Page 17

U U APPLICATIONS INFORMATION Figure 16. Silkscreen for the LTC1067/LTC1067-50 Demo Board U TYPICAL APPLICATIONS 5th Order Lowpass with Input RC (Fixed Frequency) 5V 0.1 F R41, 20k R31, 47. R21, 22.6k R IN1 R IN2 16.9k 22.6k ...

Page 18

LTC1067/LTC1067-50 U TYPICAL APPLICATIONS 5V 0.1 F R61 40.2k R51 4.99k R31, 56.2k R21, 10k R11 60. Gain and Group Delay vs Frequency 10 5 GAIN 0 –5 –10 DELAY –15 –20 –25 –30 –35 –40 600 760 ...

Page 19

... FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...

Page 20

... FREQUENCY (kHz) 1067 TA04 Ratio O Ratio O Ratio O Ratio O < 150kHz C 10675fs, sn1067 LT/TP 0698 4K • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 1997 0.150 – 0.157** (3.810 – 3.988) S16 0695 ...

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