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LTC1064-3CSW#TRPBF

P1-P3P4-P6P7-P9P10-P12
LTC1064-3
1
10643fa
FEATURES
APPLICATIO S
U
DESCRIPTIO
U
TYPICAL APPLICATIO
U
■
Antialiasing Filters
■
Smoothing Filters
■
Tracking High Frequency Lowpass Filters
■
8th Order Filter in a 14-Pin Package
■
95kHz Maximum Corner Frequency
■
No External Components
■
75:1, 150:1 and 120:1 Clock to Cutoff Frequency
Ratio
■
60µV
RMS
Total Wideband Noise
■
0.03% THD or Better
■
Operates from ±2.37V to ±8V Power Supplies
■
Low Total Output DC Offset
Low Noise, High Frequency,
8th Order Linear Phase Lowpass Filter
The LTC
®
1064-3 is a monolithic 8th order lowpass Bessel
filter, which provides a linear phase response over its
entire passband. An external TTL or CMOS clock pro-
grams the filter’s cutoff frequency. The clock to cutoff
frequency ratio is 75:1 (Pin 10 at V
+
) or 150:1 (Pin 10 at
V
–
) or 120:1 (Pin 10 at GND). The maximum cutoff
frequency is 95kHz. No external components are needed.
The LTC1064-3 features low wideband noise and low
harmonic distortion even for input voltages up to 3V
RMS
.
In fact the LTC1064-3 overall performance competes with
equivalent multiple op amp RC active realizations. The
LTC1064-3 is available in a 14-pin DIP or 16-pin surface
mounted SOL package. The LTC1064-3 is fabricated using
LTC’s enhanced analog CMOS Si-gate process.
The LTC1064-3 is pin compatible with the LTC1064-1,
LTC1064-2 and LTC1064-4.
8th Order Clock Sweepable Lowpass Bessel Filter Measured Frequency Response
LTC1064-3
1
2
3
4
5
6
7
14
13
12
11
10
9
8
OUT C
NC
V
–
f
CLK
75/150
V
OUT
NC
V
+
NC
V
IN
AGND
AGND
NC
INV A
1064 TA01a
NOTE: THE POWER SUPPLIES SHOULD BE BYPASSED BY A 0.1µF
OR LARGER CAPACITOR CLOSE TO THE PACKAGE. THE CONNECTI0N
BETWEEN PIN 7 AND PIN 14 SHOULD BE MADE UNDER THE IC PACKAGE.
CLOCK = 7MHz
V
+
–8V
8V
0.1µF
0.1µF
V
IN
V
OUT
FREQUENCY (kHz)
10
0
–15
–30
–45
–60
–75
–90
–105
1064-3 TA01b
100 1000
V
OUT
/V
IN
(dB)
V
S
= ±7.5V, f
CLK
= 7MHz, PIN 10 TO V
+
,
f
–3dB
= 95kHz, GROUP DELAY = 6µs
, LTC and LT are registered trademarks of Linear Technology Corporation.
LTC1064-3
2
10643fa
PARAMETER CONDITIONS MIN TYP MAX UNITS
Passband Gain Referenced to 0dB, 1Hz to 1kHz ● –0.5 0.15 dB
Gain TempCo 0.0002 dB/°C
–3dB Frequency 50:1 (f
CLK
/f
–3dB
= 75) 26.67 kHz
100:1 (f
CLK
/f
–3dB
= 150) 13.34 kHz
Gain at –3dB Frequency Referenced to 0dB, f
IN
= 26.67/13.34kHz ● –3.8 –2.75 dB
Stopband Attenuation At 3f
–3dB
● –25 –29 dB
Stopband Attenuation At 5f
–3dB
● –56 –60 dB
Stopband Attenuation At 7f
–3dB
–84 dB
Input Frequency Range 100:1 0 <f
CLK
/2 kHz
50:1 0 <f
CLK
kHz
Output Voltage Swing and V
S
= ±2.37V ● ±1.1 V
Operating Input Voltage Range V
S
= ±5V ● ±3.1 V
V
S
= ±7.5V ● ±5V
Total Harmonic Distortion V
S
= ±5V, Input = 1V
RMS
at 1kHz 0.015 %
V
S
= ±7.5V, Input = 3V
RMS
at 1kHz 0.03 %
Wideband Noise V
S
= ±5V, Input = GND 1Hz – 1.99MHz 55 µV
RMS
V
S
= ±7.5V, Input = GND 1Hz – 1.99MHz 60 µV
RMS
(Note 1)
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
S
= ±7.5V, 75:1, f
CLK
= 2MHz, R1 = 10k, TTL or CMOS clock input level
unless otherwise specified.
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Total Supply Voltage (V
+
to V
–
) ............................ 16.5V
Power Dissipation.............................................. 400mW
Storage Temperature Range ................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
Operating Temperature Range
LTC1064-3M (OBSOLETE) ............... –55°C to 125°C
LTC1064-3C ....................................... – 40°C to 85°C
Input Voltage ........................... (V
+
+0.3V) to V
–
–0.3V)
Burn-In Voltage ....................................................... 15V
ABSOLUTE AXI U RATI GS
WWWU
ORDER PART
NUMBER
LTC1064-3CSW
T
JMAX
= 150°C, θ
JA
= 90°C/W
LTC1064-3CN
ORDER PART
NUMBER
T
JMAX
= 110°C, θ
JA
= 70°C/W
LTC1064-3MJ
LTC1064-3CJ
1
2
3
4
5
6
7
TOP VIEW
J PACKAGE
14-LEAD CERDIP
N PACKAGE
14-LEAD PDIP
14
13
12
11
10
9
8
NC
V
IN
AGND
V
+
AGND
NC
R
IN
A
OUT C
NC
V
–
f
CLK
75/150
V
OUT
NC
OBSOLETE PACKAGE
Consider the N 14 Package for Alternate Source
1
2
3
4
5
6
7
8
TOP VIEW
SW PACKAGE
16-LEAD PLASTIC (WIDE) SO
16
15
14
13
12
11
10
9
NC
V
IN
AGND
V
+
AGND
NC
NC
R
IN
A
OUT C
NC
V
–
NC
f
CLK
75/150
NC
V
OUT
PACKAGE/ORDER I FOR ATIO
UU
W
ELECTRICAL CHARACTERISTICS
LTC1064-3
3
10643fa
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
S
= ±7.5V, 75:1, f
CLK
= 2MHz, R1 = 10k, TTL or CMOS clock input level
unless otherwise specified.
PARAMETER CONDITIONS MIN TYP MAX UNITS
Output DC Offset V
S
= ±7.5V ±30 ±150 mV
Output DC Offset TempCo V
S
= ±5V ±20 µV/°C
V
S
= ±7.5V ±50 µV/°C
Input Impedance 14 22 kΩ
Output Impedance f
OUT
= 10kHz 2 Ω
Output Short-Circuit Current Source/Sink 3/1 mA
Clock Feedthrough 200 µV
RMS
Maximum Clock Frequency V
S
≥ ±7V, 50% Duty Cycle 5 MHz
V
S
≥ ±7V, 50% Duty Cycle, T
A
= <55°C7MHz
Power Supply Current V
S
= ±2.37V, f
CLK
= 1MHz ● 10 22 mA
V
S
= ±5V, f
CLK
= 1MHz 12 23 mA
● 26 mA
V
S
= ±7.5V, f
CLK
= 1MHz 16 28 mA
● 32 mA
Power Supply Voltage Range ● ±2.37 ±8V
Gain vs Frequency Phase vs Frequency Group Delay
FREQUENCY (Hz)
10k
GAIN (dB)
15
0
–15
–30
–45
–60
–75
–90
–105
100k 1M
1064 G01
V
S
= ±7.5V
T
A
= 25°C
f
CLK
= 2MHz
f
–3dB
= 26.67kHz
f
CLK
= 7MHz
f
–3dB
= 95kHz
f
CLK
= 5MHz
f
–3dB
= 66.67kHz
FREQUENCY (kHz)
06
PHASE (DEG)
–45
0
45
90
135
180
225
270
315
360
405
450
10 12 14 16 18 20 22
1064 G02
24 8
V
S
= ±7.5V
T
A
= 25°C
f
CLK
= 750kHz
f
–3dB
= 10kHz
FREQUENCY (kHz)
110
100
90
80
70
60
50
40
30
20
10
0
GROUP DELAY (µs)
1064 G03
V
S
= ±7.5V
T
A
= 25°C
061012 14 16 18 20 2224 8
f
CLK
= 750kHz, f
–3dB
= 10kHz
f
CLK
= 2MHz, f
–3dB
= 26.67kHz
f
CLK
= 5MHz, f
–3dB
= 66.67kHz
ELECTRICAL CHARACTERISTICS
TYPICAL PERFOR A CE CHARACTERISTICS
UW
P1-P3P4-P6P7-P9P10-P12

LTC1064-3CSW#TRPBF

Mfr. #:
Buy LTC1064-3CSW#TRPBF
Manufacturer:
Analog Devices Inc.
Description:
Active Filter 100kHz Clk Sw. LInear Phase Filter
Lifecycle:
New from this manufacturer.
Delivery:
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