LTC1061CS Linear Technology, LTC1061CS Datasheet

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LTC1061CS

Manufacturer Part Number
LTC1061CS
Description
Manufacturer
Linear Technology
Datasheet

Specifications of LTC1061CS

Architecture
Switched Capacitor
Filter Type
Universal
Single Supply Voltage (typ)
5/9/12/15V
Dual Supply Voltage (typ)
±5V
Power Supply Requirement
Single/Dual
Single Supply Voltage (min)
4.74V
Single Supply Voltage (max)
18V
Dual Supply Voltage (min)
±2.37V
Dual Supply Voltage (max)
±8V
Operating Temperature (min)
-40C
Operating Temperature (max)
85C
Lead Free Status / Rohs Status
Not Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LTC1061CSW#PBF
Manufacturer:
INFINEON
Quantity:
21 000
Part Number:
LTC1061CSW#TRPBF
Manufacturer:
LT
Quantity:
633
APPLICATIO S
TYPICAL APPLICATIO
FEATURES
Three Filters in a Single Package
Up to 6th Order Filter Functions
Center Frequency Range up to 35kHz
f
Guaranteed Center Frequency and Q Accuracy Over
Guaranteed Low Offset Voltages Over Temperature
90dB Signal-to-Noise Ratio
Operation from Single 4.7V Supply, Up to ±8V
Guaranteed Filter Specifications with ±5V Supply and
Low Power Consumption with Single 5V Supply
Clock Inputs T
Available in 20-Pin DIP and 20-Pin SO Wide Package
High Order, Wide Frequency Range Bandpass,
Low Power Consumption, Single 5V Supply,
Tracking Filters
Antialiasing Filters
O
V
IN
× Q Product up to 1MHz
Temperature
±2.37V Supply
Lowpass, Notch Filters
Clock-Tunable Filters
< 100kHz
T
2
6th Order, Clock-Tunable, 0.5dB Ripple Chebyshev BP Filter
CLK IN < 1.2MHz
9.31k
165k
V
+
= 7.5V
2
7.5V
L and CMOS Compatible
U
4.99k
165k
1k
10
1
2
3
4
5
6
7
8
9
U
LTC1061
20
19
18
17
16
15
14
13
12
11
78.7k
4.99k
4.99k
5.49k
165k
V
= –7.5V
V
23.7k
OUT
Universal Filter Building Block
DESCRIPTIO
The LTC
sal filter building blocks. Each filter building block together
with an external clock and 2 to 5 resistors can produce
various second order functions which are available at its
three output pins. Two out of three always provide low-
pass and bandpass functions while the third output pin
can produce highpass or notch or allpass. The center
frequency of these functions can be tuned with an external
clock or an external clock and a resistor ratio. For Q < 5, the
center frequency ranges from 0.1Hz to 35kHz. For Qs of 10
or above, the center frequency ranges from 0.1Hz to
28kHz.
The LTC1061 can be used with single or dual supplies
ranging from ±2.37V to ±8V (or 4.74V to 16V). When the
filter operates with supplies of ±5V and above, it can
handle input frequencies up to 100kHz.
The LTC1061 is compatible with the LTC1059 single
universal filter and the LTC1060 dual. Higher than 6th
order functions can be obtained by cascading the LTC1061
with the LTC1059 or LTC1060. Any classical filter realiza-
tion can be obtained.
is a trademark of Linear Technology Corporation. All other trademarks are the property of
their respective owners.
1061 TA01
, LTC and LT are registered trademarks of Linear Technology Corporation. LTCMOS
49.9k
High Performance Triple
®
1061 consists of three high performance, univer-
–100
U
–20
–40
–60
–80
0
0
10
INPUT FREQUENCY GAIN (kHz)
Amplitude Response
2kHz
20
30
LTC1061
f
CLK
40
= 1MHz
1061 TA02
50
1061fe
1
TM

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LTC1061CS Summary of contents

Page 1

... LTC1061 with the LTC1059 or LTC1060. Any classical filter realiza- tion can be obtained. , LTC and LT are registered trademarks of Linear Technology Corporation. LTCMOS is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. 20 78. ...

Page 2

... Mid-Supplies 500kHz CLK Sides A, B, Mode 1 Side C, Mode 3 × Q ≤ 50kHz, f × ≤ 5kHz TOP VIEW ORDER PART NUMBER LTC1061ACN LTC1061CN 4 17 INV B LTC1061CSW – INV C N PACKAGE 20-LEAD PLASTIC DIP SW PACKAGE LTC1061AMJ = 100°C, θ = 100°C/W ( 100°C, θ ...

Page 3

... Figure 23 OS1 V OS2 V OS2 V , LTC1061CN, ACN/LTC1061CS OS3 V , LTC1061CN, ACN/LTC1061CS OS3 Clock Feedthrough Maximum Clock Frequency Power Supply Current (Complete Filter) The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are = ±2.37V 25°C, unless otherwise specified. ...

Page 4

LTC1061 W U TYPICAL PERFOR A Mode 1, Mode CLK O Deviation ± 0 25° 250kHz 0 CLK –0 CLK O –0.8 50 ...

Page 5

W BLOCK DIAGRA CLK LEVEL (8) SHIFT GENERATOR LEVEL SHIFT GENERATOR LEVEL SHIFT GENERATOR LEVEL SHIFT ( DESCRIPTIO A D Power Supplies (Pins 10, 15) They should be bypassed with 0.1µF disc ceramic. Low noise, nonswitching, ...

Page 6

LTC1061 DESCRIPTIO LTC1061 2.49k 1µF 2.49k 0.1µ CLOCK IN f < 1MHz CLK Figure 1. The ...

Page 7

W ODES OF OPERATIO Description and Applications 1. Primary Modes: There are two basic modes of opera- tion, Mode 1 and Mode 3. In Mode 1, the ratio of the external clock frequency to the center frequency of each 2nd ...

Page 8

LTC1061 W ODES OF OPERATIO 0 – 2MHz CLK f = 40kHz –20 C –30 – 1MHz CLK – 20kHz C –60 –70 10k 20k 100k 200k 40k f (Hz) IN Figure 6. Measures ...

Page 9

W ODES OF OPERATIO Another example of Mode 1b is illustrated on the front page of the data sheet. The cascading sequence of this 6th order bandpass filter is shown in block diagram form, Figure 10a. the filter is geometrically ...

Page 10

LTC1061 W ODES OF OPERATIO R33 2 19 R23 LTC1061 CMOS 8 13 CLOCK INPUT NOTES: ...

Page 11

W ODES OF OPERATIO 0 –10 –20 –30 –40 –50 –60 –70 –80 – (kHz) IN Figure 15. Resistor Values and Amplitude Response of the Topology of Figure ...

Page 12

LTC1061 W ODES OF OPERATIO Figure 18 shows the plotted amplitude responses of a 6th order notch filter operating again with a clock-to-center notch frequency ratio of 250:1. The theoretical notch depth is 70dB and when the notch is centered ...

Page 13

W ODES OF OPERATIO Figure 21 shows the side A of the LTC1061 connected in Mode 2 while sides B and C are in Mode 3a. This topology can be used to synthesize elliptic bandpass, highpass and notch filters. The ...

Page 14

LTC1061 W ODES OF OPERATIO V (± CLK/ O 5.0 50:1 5.0 100:1 2.5 50:1 2.5 100:1 5.0 50:1 5.0 100:1 2.5 50:1 2.5 100:1 5.0 50:1 5.0 100:1 2.5 50:1 2.5 100:1 5.0 50:1 5.0 100:1 ...

Page 15

... MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .010 INCH (0.254mm) 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 16

... NOTE .394 – .419 (10.007 – 10.643) N .037 – .045 (0.940 – 1.143) .004 – .012 (0.102 – 0.305) S20 (WIDE) 0502 :F Ratios Available C CLK < 150kHz C < 360kHz C LT/LT 0905 REV E • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 1994 1061fe ...

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