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Linear Technology Electronic Components Datasheet

LT1064 Datasheet

Low Noise/ Fast/ Quad Universal Filter Building Block

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LTC1064
Low Noise, Fast, Quad
Universal Filter Building Block
FEATURES
s Four Filters in a 0.3-Inch Wide Package
s One Half the Noise of the LTC1059/LTC1060/
LTC1061 Devices
s Maximum Center Frequency: 140kHz
s Maximum Clock Frequency: 7MHz
s Clock-to-Center Frequency Ratio of 50:1 and 100:1
Simultaneously Available
s Power Supplies: ±2.375V to ±8V
s Low Offsets
s Low Harmonic Distortion
s Customized Version with Internal Resistors
Available
U
APPLICATIONS
s Anti-Aliasing Filters
s Wide Frequency Range Tracking Filters
s Spectral Analysis
s Loop Filters
DESCRIPTION
The LTC®1064 consists of four high speed, low noise
switched-capacitor filter building blocks. Each filter build-
ing block, together with an external clock and three to five
resistors can provide various 2nd order functions like
lowpass, highpass, bandpass and notch. The center fre-
quency of each 2nd order function can be tuned with an
external clock, or a clock and resistor ratio. For Q 5, the
center frequency range is from 0.1Hz to 100kHz. For Q
3, the center frequency range can be extended to 140kHz.
Up to 8th order filters can be realized by cascading all four
2nd order sections. Any classical filter realization (such as
Butterworth, Cauer, Bessel and Chebyshev) can be formed.
A customized monolithic version of the LTC1064 includ-
ing internal thin film resistors can be obtained for high
volume applications. Consult LTC Marketing for details.
The LTC1064 is manufactured using Linear Technology’s
enhanced LTCMOSTM silicon gate process.
, LTC and LT are registered trademarks of Linear Technology Corporation.
LTCMOS is a trademark of Linear Technology Corporation.
TYPICAL APPLICATION
Clock-Tunable 8th Order Cauer Lowpass Filter with fCUTOFF up to 100kHz
13k
22.1k
VIN
10k
18.25k
10.7k
8V
(FROM
RH2, RL2)
0.1µF
10k
49.9K
11.5K
66.5k
1 INV B
INV C 24
2 HPB/NB HPC/NC 23
3 BPB
BPC 22
4 LPB
LPC 21
5 SB
SC 20
6 AGND
V19
7 V+ LTC1064 CLK 18
8 SA
50/100 17
9 LPA
LPD 16
10 BPA
BPD 15
11 HPA/NA
HPD 14
12 INV A
INV D 13
10k
12.1k
17.4k
5MHz
8V
41.2k
12.7k
14k
121k
RH2
102k
RL2
26.7k
0.1µF
PIN 12
– 8V
VOUT
10k
FOR fCLK = 5MHz, ADD C1 = 10pF BETWEEN PINS 4, 1
C2 = 10pF BETWEEN PINS 21, 24
C3 = 27pF BETWEEN PINS 9, 12
WIDEBAND NOISE 140µVRMS
1064 TA01
Gain vs Frequency
0
–15
–30
–45 fCLK = 5MHz
–60 RIPPLE = ±0.1dB
–75
–90
–105
fCLK = 1MHz
RIPPLE = ±0.05dB
–120
–135
1k
10k 100k
INPUT FREQUENCY (Hz)
1M
1064 TA02
1


Linear Technology Electronic Components Datasheet

LT1064 Datasheet

Low Noise/ Fast/ Quad Universal Filter Building Block

No Preview Available !

LTC1064
ABSOLUTE MAXIMUM RATINGS
Total Supply Voltage (V + to V ) ............................. 16V
Power Dissipation............................................. 500mW
Operating Temperature Range
LTC1064AC/LTC1064C.................... – 40°C to 85°C
LTC1064AM/LTC1064M ................ – 55°C to 125°C
Storage Temperature Range ................ – 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
PACKAGE/ORDER INFORMATION
TOP VIEW
INV B 1
HPB/NB 2
BPB 3
LPB 4
SB 5
AGND 6
V+ 7
SA 8
LPA 9
BPA 10
HPA/NA 11
INV A 12
24 INV C
23 HPC/NC
22 BPC
21 LPC
20 SC
19 V
18 CLK
17 50/100
16 LPD
15 BPD
14 HPD
13 INV D
J PACKAGE
N PACKAGE
24-LEAD CERAMIC DIP 24-LEAD PLASTIC DIP
TJMAX = 150°C, θJA = 100°C/ W (J)
TJMAX = 110°C, θJA = 65°C/ W (N)
ORDER PART
NUMBER
LTC1064ACJ
LTC1064CJ
LTC1064AMJ
LTC1064MJ
LTC1064ACN
LTC1064CN
Consult factory for Industrial grade parts.
TOP VIEW
INV B 1
HPB/NB 2
BPB 3
LPB 4
SB 5
AGND 6
V+ 7
SA 8
LPA 9
BPA 10
HPA/NA 11
INV A 12
24 INV C
23 HPC/NC
22 BPC
21 LPC
20 SC
19 V
18 CLK
17 50/100
16 LPD
15 BPD
14 HPD
13 INV D
SW PACKAGE
24-LEAD PLASTIC SO
TJMAX = 100°C, θJA = 85°C/ W
ORDER PART
NUMBER
LTC1064CS
ELECTRICAL CHARACTERISTICS
(Internal Op Amps) TA = 25°C, unless otherwise specified.
PARAMETER
Operating Supply Voltage Range
Voltage Swings
CONDITIONS
VS = ±5V, RL = 5k
Output Short-Circuit Current (Source/Sink)
DC Open-Loop Gain
GBW Product
Slew Rate
VS = ±5V
VS = ±5V, RL = 5k
VS = ±5V
VS = ±5V
MIN
±2.375
±3.2
q ±3.1
TYP
±3.6
3
80
7
10
MAX UNITS
±8 V
V
V
mA
dB
MHz
V/µs
2


Part Number LT1064
Description Low Noise/ Fast/ Quad Universal Filter Building Block
Maker Linear Technology
Total Page 16 Pages
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