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LTC1064-7CN#PBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
1
LTC1064-7
10647fb
Linear Phase, 8th Order
Lowpass Filter
■
Steeper Roll-Off Than 8th Order Bessel Filters
■
f
CUTOFF
up to 100kHz
■
Phase Equalized Filter in 14-Pin Package
■
Phase and Group Delay Response Fully Tested
■
Transient Response Exhibits 5% Overshoot and
No Ringing
■
Wide Dynamic Range
■
72dB THD or Better Throughout a 50kHz Passband
■
No External Components Needed
■
Available in 14-Pin DIP and 16-Pin SO Wide
Packages
The LTC
®
1064-7 is a clock-tunable monolithic 8th order
lowpass filter with linear passband phase and flat group
delay. The amplitude response approximates a maximally
flat passband while it exhibits steeper roll-off than an
equivalent 8th order Bessel filter. For instance, at twice the
cutoff frequency the filter attains 34dB attenuation (vs
12dB for Bessel), while at three times the cutoff frequency,
the filter attains 68dB attenuation (vs 30dB for Bessel).
The cutoff frequency of the LTC1064-7 is tuned via an
external TTL or CMOS clock.
The LTC1064-7 features wide dynamic range. With single
5V supply, the S/N + THD is 76dB. Optimum 92dB S/N is
obtained with ±7.5V supplies.
The clock-to-cutoff frequency ratio of the LTC1064-7 can
be set to 50:1 (Pin 10 to V
+
) or 100:1 (Pin 10 to V
–
).
When the filter operates at clock-to-cutoff frequency ratio
of 50:1, the input is double-sampled to lower the risk of
aliasing.
The LTC1064-7 is pin-compatible with the LTC1064-X
series, LTC1164-7 and LTC1264-7.
■
Data Communication Filters
■
Time Delay Networks
■
Phase-Matched Filters
80kHz Linear Phase Lowpass Filter
Eye Diagram
1
2
3
4
5
6
7
14
13
12
11
10
9
8
LTC1064-7
V
IN
7.5V
–7.5V
CLK
= 4MHz
7.5V
V
OUT
NOTE: THE POWER SUPPLIES SHOULD BE BYPASSED BY A
0.1µF CAPACITOR CLOSE TO THE PACKAGE AND ANY PRINTED
CIRCUIT BOARD ASSEMBLY SHOULD MAINTAIN A DISTANCE
OF AT LEAST 0.2 INCHES BETWEEN ANY OUTPUT OR INPUT
PIN AND THE f
CLK
LINE.
1064-7 TA01
1V/DIV
1064-7 TA02
1µs/DIV
V
S
= ±7.5V
f
CLK
= 4MHz
RATIO = 50:1
, LTC and LT are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
FEATURES
DESCRIPTIO
U
APPLICATIO S
U
TYPICAL APPLICATIO
U
2
LTC1064-7
10647fb
A
U
G
W
A
W
U
W
ARB
S
O
LU
T
EXI T
I
S
Total Supply Voltage (V
+
to V
–
) .......................... 16.5V
Power Dissipation............................................. 400mW
Burn-In Voltage ................................................... 16.5V
Voltage at Any Input ..... (V
–
– 0.3V) ≤ V
IN
≤ (V
+
+ 0.3V)
Storage Temperature Range ................ – 65°C to 150°C
Operating Temperature Range
LTC1064-7C ....................................... – 40°C to 85°C
LTC1064-7M OBSOLETE .............. –55°C to 125°C
Lead Temperature (Soldering, 10 sec)................. 300°C
E
LECTR
IC
AL C CHARA TERIST
ICS
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C.V
S
= ±7.5V, R
L
= 10k, T
A
= 25°C, f
CUTOFF
= 10kHz or 20kHz, f
CLK
= 1MHz,
TTL or CMOS level (maximum clock rise and fall time ≤ 1µs) and all gain measurements are referenced to passband gain, unless
otherwise specified. The filter cutoff frequency is abbreviated as f
CUTOFF
or f
C
.
PARAMETER CONDITIONS MIN TYP MAX UNITS
Passband Gain 0.1Hz ≤ f ≤ 0.25 f
CUTOFF
f
TEST
= 5kHz, (f
CLK
/f
C
) = 50:1 ● – 0.60 0.10 0.65 dB
Gain at 0.5 f
CUTOFF
f
TEST
= 10kHz, (f
CLK
/f
C
) = 50:1 ● – 0.90 – 0.35 0.15 dB
f
TEST
= 5kHz, (f
CLK
/f
C
) = 100:1 ● – 1.30 – 0.35 1.25 dB
Gain at 0.75 f
CUTOFF
f
TEST
= 15kHz, (f
CLK
/f
C
) = 50:1 ● – 2.0 –1.0 – 0.35 dB
Gain at f
CUTOFF
f
TEST
= 20kHz, (f
CLK
/f
C
) = 50:1 ● – 4.50 – 3.4 – 2.50 dB
f
TEST
= 10kHz, (f
CLK
/f
C
) = 100:1 ● – 5.75 – 4.5 – 3.75 dB
Gain at 2 f
CUTOFF
f
TEST
= 40kHz, (f
CLK
/f
C
) = 50:1 ● – 36.5 – 34.0 –31.75 dB
f
TEST
= 20kHz, (f
CLK
/f
C
) = 100:1 ● – 37.0 – 34.5 –31.75 dB
Gain with f
CLK
= 20kHz f
TEST
= 200Hz, (f
CLK
/f
C
) = 100:1 – 6.5 – 4.3 – 3.5 dB
Gain with f
CLK
= 400kHz, V
S
= ±2.375V f
TEST
= 4kHz, (f
CLK
/f
C
) = 50:1 – 0.9 – 0.3 0.25 dB
f
TEST
= 8kHz, (f
CLK
/f
C
) = 50:1 – 4.5 – 3.3 – 2.00 dB
Phase Factor (
F
) 0.1Hz ≤ f ≤ f
CUTOFF
Phase = 180° –
F
(f/f
C
) (f
CLK
/f
C
) = 50:1 430 ± 2.0 Deg
(Note 2) (f
CLK
/f
C
) = 100:1 421 ± 2.5 Deg
(f
CLK
/f
C
) = 50:1 ● 422 430 437 Deg
(f
CLK
/f
C
) = 100:1 ● 414 421 429 Deg
WU
U
PACKAGE
/
O
RDER I FOR ATIO
ORDER PART
NUMBER
LTC1064-7CN
LTC1064-7CJ
LTC1064-7MJ
ORDER PART
NUMBER
LTC1064-7CSW
T
JMAX
= 110°C, θ
JA
= 85°C/W
T
JMAX
= 110°C, θ
JA
= 65°C/W (N)
TOP VIEW
SW PACKAGE
16-LEAD PLASTIC SO (WIDE)
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
NC
V
IN
GND
V
+
GND
NC
LP (A)
INV
(A)
R
IN
(A)
NC
V
–
NC
f
CLK
50/100
NC
V
OUT
(Note 1)
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Order Options Tape and Reel: Add #TR Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking: http://www.linear.com/leadfree/
Consider the N Package as an Alternate Source
1
2
3
4
5
6
7
TOP VIEW
N PACKAGE
14-LEAD PLASTIC DIP
14
13
12
11
10
9
8
NC
V
IN
GND
V
+
GND
LP (A)
INV
(A)
R
IN
(A)
NC
V
–
f
CLK
50/100
V
OUT
NC
T
JMAX
= 150°C, θ
JA
= 65°C/W (J)
J PACKAGE 14-LEAD CERAMIC DIP
OBSOLETE PACKAGE
3
LTC1064-7
10647fb
E
LECTR
IC
AL C CHARA TERIST
ICS
PARAMETER CONDITIONS MIN TYP MAX UNITS
Phase Nonlinearity (f
CLK
/f
C
) = 50:1 ±1.0 %
(Notes 2, 4) (f
CLK
/f
C
) = 100:1 ±1.0 %
(f
CLK
/f
C
) = 50:1 ● ± 2.0 %
(f
CLK
/f
C
) = 100:1 ● ± 2.0 %
Group Delay (t
d
)(f
CLK
/f
C
) = 50:1, f ≤ f
CUTOFF
59.7 ± 0.5 µs
t
d
= (
F
/360)(1/f
C
)(f
CLK
/f
C
) = 100:1, f ≤ f
CUTOFF
117.0 ± 1.0 µs
(Note 3) (f
CLK
/f
C
) = 50:1, f ≤ f
CUTOFF
● 58.6 59.7 60.7 µs
(f
CLK
/f
C
) = 100:1, f ≤ f
CUTOFF
● 115.0 117.0 119.0 µs
Group Delay Deviation (f
CLK
/f
C
) = 50:1, f ≤ f
CUTOFF
±1.0 %
(Notes 3, 4) (f
CLK
/f
C
) = 100:1, f ≤ f
CUTOFF
±1.0 %
(f
CLK
/f
C
) = 50:1, f ≤ f
CUTOFF
● ± 2.0 %
(f
CLK
/f
C
) = 100:1, f ≤ f
CUTOFF
● ± 2.0 %
Input Frequency Range (Table 9) (f
CLK
/f
C
) = 50:1 <f
CLK
kHz
(f
CLK
/f
C
) = 100:1 <f
CLK
/2 kHz
Maximum f
CLK
V
S
= 5V (AGND = 2V) 2.0 MHz
V
S
= ±5V 3.5 MHz
V
S
= ± 7.5V 5.0 MHz
Clock Feedthrough (f ≥ f
CLK
) 50:1 200 µV
RMS
Wideband Noise V
S
= ±2.5V 95 ± 5% µV
RMS
(1Hz ≤ f ≤ f
CLK
)V
S
= ±5V 105 ± 5% µV
RMS
V
S
= ± 7.5V 115 ± 5% µV
RMS
Input Impedance 25 40 70 kΩ
Output DC Voltage Swing V
S
= ±2.375V ±1.0 ±1.2 V
(Note 5) V
S
= ±5V ● ±2.1 ±3.2 V
V
S
= ±7.5V ● ±3.0 ±5.0 V
Output DC Offset 50:1, V
S
= ±5V ±150 ±220 mV
100:1, V
S
= ±5V ±150 mV
Output DC Offset TempCo 50:1, V
S
= ±5V ±200 µV/°C
100:1, V
S
= ±5V ±200 µV/°C
Power Supply Current V
S
= ±2.375V, T
A
= 25°C1122mA
● 22 mA
V
S
= ±5V, T
A
= 25°C1426mA
● 28 mA
V
S
= ±7.5V, T
A
= 25°C1728mA
● 32 mA
Power Supply Range ±2.375 ±8V
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
S
= ±7.5V, R
L
= 10k, f
CUTOFF
= 10kHz or 20kHz, f
CLK
= 1MHz, TTL or
CMOS level (maximum clock rise and fall time ≤ 1µs) and all gain measurements are referenced to passband gain, unless otherwise
specified. The filter cutoff frequency is abbreviated as f
CUTOFF
or f
C
.
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16

LTC1064-7CN#PBF

Mfr. #:
Buy LTC1064-7CN#PBF
Manufacturer:
Analog Devices Inc.
Description:
Active Filter 100kHz Phase Corrected Lowpass Filter
Lifecycle:
New from this manufacturer.
Delivery:
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