LTC1064-4CSW#PBF [Linear]
LTC1064-4 - Low Noise, 8th Order, Clock Sweepable Cauer Lowpass Filter; Package: SO; Pins: 16; Temperature Range: 0°C to 70°C;
| 型号： | LTC1064-4CSW#PBF |
| 厂家： | 
Linear |
| 描述： | LTC1064-4 - Low Noise, 8th Order, Clock Sweepable Cauer Lowpass Filter; Package: SO; Pins: 16; Temperature Range: 0°C to 70°C LTE 光电二极管 有源滤波器 |
| 文件： | 总12页 (文件大小：131K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LTC1064-4
Low Noise, 8th Order, Clock
Sweepable Cauer Lowpass Filter
U
FEATURES
DESCRIPTIO
The LTC®1064-4 is an 8th order, clock sweepable Cauer
■
8th Order Filter in a 14-Pin Package
■
80dB or More Stopband Attenuation at 2 × fCUTOFF
50:1, fCLK to fCUTOFF Ratio (Cauer)
100:1, fCLK to f–3dB Ratio (Transitional)
135µVRMS Total Wideband Noise
0.03% THD or Better
lowpass switched capacitor filter. An external TTL or
CMOS clock programs the value of the filter’s cutoff
frequency. With Pin 10 at V+, the fCLK to fCUTOFF ratio is
50:1; the filter has a Cauer response and with compensa-
tion the passband ripple is ±0.1dB. The stopband attenu-
ation is 80dB at 2 × fCUTOFF. Cutoff frequencies up to
100kHz can be achieved. With Pin 10 at V–, the fCLK to
f–3dB ratiois100:1,thefilterhasatransitionalButterworth-
Cauer response with lower noise and lower delay
nonlinearity than the Cauer response. The stopband
attenuation at 2.5×f –3dB is 92dB. Cutoff frequencies up to
50kHz can be achieved.
■
■
■
■
■
■
100kHz Maximum fCUTOFF Frequency
Operates up to ±8V Power Supplies
Input Frequency Range up to 50 Times the Filter
Cutoff Frequency
U
APPLICATIO S
■
Antialiasing Filters
The LTC1064-4 features low noise and low harmonic
distortion even when input voltages up to 3VRMS are
applied. The LTC1064-4 overall performance competes
with equivalent multiple op amp active realizations. The
LTC1064-4 is pin compatible with the LTC1064-1,
LTC1064-2 and LTC1064-3.
■
Telecom Filters
■
Sinewave Generators
, LTC and LT are registered trademarks of Linear Technology Corporation.
LTCMOS is a trademark of Linear Technology Corporation.
TheLTC1064-4ismanufacturedusingLinearTechnology’s
enhanced LTCMOSTM silicon gate process.
U
TYPICAL APPLICATIO
8th Order Clock Sweepable Lowpass Elliptic Filter
Frequency Response
20
1
2
3
4
5
6
7
14
13
12
11
10
9
T
= 25°C
f
= 5MHz, 50:1
A
CLK
= 30pF, C
R(h, I)
INV C
C
= 18pF
COMP1
COMP2
0
–20
COMP2*
V
V
IN
IN
–
–8V
V
AGND
LTC1064-4
0.1µF
+
CLOCK
f
V
8V
CLK
–40
(TTL, ≤5MHz)
0.1µF
+
–
50/100
AGND
V /V
–60
–80
f
= 2MHz, 50:1
CLK
V
COMP1*
INV A
V
OUT
OUT
8
NC
f
= 1MHz, 100:1
10k
CLK
–100
1064 TA01
1k
100k
1M
FREQUENCY (Hz)
*FOR FREQUENCIES ABOVE 20kHz AND MINIMUM PASSBAND RIPPLE REFER
TO THE PIN DESCRIPTION SECTION FOR COMPENSATION GUIDELINES.
NOTE:THE POWER SUPPLIES SHOULD BE BYPASSED BY A 0.1µF CAPACITOR
CLOSE TO THE PACKAGE. BYPASSING PIN 10 WITH 0.1µF CAPACITOR
REDUCES CLOCK FEEDTHROUGH. THE CONNECTION BETWEEN PINS 7
AND 14 SHOULD BE PHYSICALLY DONE UNDER THE PACKAGE.
1064-4 TA01b
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1
LTC1064-4
W W U W
ABSOLUTE AXI U RATI GS
(Note 1)
Total Supply Voltage (V+ to V–)............................ 16.5V
Input Voltage at Any Pin ......V– –0.3V ≤ VIN ≤ V+ +0.3V
Power Dissipation.............................................. 400mW
Storage Temperature Range ................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
Operating Temperature Range
LTC1064-4M (OBSOLETE) ............... –55°C to 125°C
LTC1064-4C ....................................... –40°C to 85°C
U W
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PACKAGE/ORDER I FOR ATIO
TOP VIEW
ORDER PART
ORDER PART
NUMBER
R(h, I)
TOP VIEW
INV C
1
2
3
4
5
6
7
14
13
12
11
10
9
NUMBER
COMP2
V
IN
INV C
1
2
3
4
5
6
7
8
R(h, I)
16
15
14
13
12
11
–
V
AGND
LTC1064-4CN
LTC1064-4CSW
V
COMP2
IN
+
–
f
V
CLK
AGND
V
RATIO
+
AGND
COMP1
INV A
V
NC
V
OUT
AGND
NC
f
CLK
NC
8
RATIO
COMP1
INV A
10 NC
N PACKAGE
14-LEAD PDIP
9
V
OUT
T
JMAX = 110°C, θJA = 70°C/W
SW PACKAGE
J PACKAGE
16-LEAD PLASTIC (WIDE) SO
14-LEAD CERDIP
LTC1064-4MJ
LTC1064-4CJ
TJMAX = 150°C, θJA = 90°C/W
OBSOLETE PACKAGE
Consider the N14 Package for Alternate Source
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS
The ■ denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VS = ±7.5V, 50:1, fCLK = 1MHz, fC = 20kHz, R1 = 10k, TTL clock input
level unless otherwise specified.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Passband Gain
Gain TempCo
Passband Edge Frequency, f
Referenced to 0dB, 1Hz to 0.05f
■
■
–0.5
0.1
dB
dB/°C
kHz
dB
kHz
kHz
dB
CUTOFF
0.0002
20 ± 1%
C
Gain at f
Referenced to Passband Gain, f = 20kHz
–0.4
0.7
0.6
C
C
–3dB Frequency
50:1 (Cauer Response)
100:1 (Transitional Response)
21.5
10
Passband Ripple (Note 2)
Stopband Attenuation
Stopband Attenuation
0.1f to 0.95f Referenced to Passband Gain
■
■
–0.15
–56
C
C
At 1.7f
–60
–80
dB
dB
CUTOFF
At 2f
CUTOFF
+
Input Frequency Range
50:1, Pin 10 at V
0
0
f
kHz
kHz
CLK
/2
–
100:1, Pin 10 at V
f
CLK
Output Voltage Swing and
V = ±2.37V
■
■
■
±1.1
±3.1
±5.0
V
V
V
S
Operating Input Voltage Range
Total Harmonic Distortion
Wideband Noise
V = ±5V
S
V = ±7.5V
S
V = ±5V, Input = 1V
at 1kHz
RMS
0.015
0.03
%
%
S
V = ±7.5V, Input = 3V
S
at 1kHz
RMS
V = ±5V, Input = GND 1Hz to 999kHz
120
135
µV
µV
S
RMS
RMS
V = ±7.5V, Input = GND 1Hz to 999kHz
S
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2
LTC1064-4
ELECTRICAL CHARACTERISTICS
level unless otherwise specified.
The ■ denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VS = ±7.5V, 50:1, fCLK = 1MHz, fC = 20kHz, R1 = 10k, TTL clock input
PARAMETER
CONDITIONS
V = ±7.5V
MIN
TYP
MAX
UNITS
Output DC Offset
Output DC Offset TempCo
±50
–100
–200
±160
mV
µV/°C
µV/°C
S
V = ±5V
S
V = ±7.5V
S
Input Impedance
9
13
2
kΩ
Ω
Output Impedance
f
= 10kHz
OUT
Output Short-Circuit Current
Clock Feedthrough
Source/Sink
Input = GND
3/1
200
mA
µV
RMS
Maximum Clock Frequency
Power Supply Current
V = ±7.5V, 50% Duty Cycle (Note 3)
5
MHz
S
V = ±2.37V, f
= 1MHz
CLK
= 1MHz
■
■
11
14
22
23
26
28
32
mA
mA
mA
mA
mA
S
V = ±5V, f
S
CLK
V = ±7.5V, f
S
= 1MHz
CLK
17
■
■
Power Supply Voltage Range
±2.37
±8
V
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: For tighter passband ripple specifications please consult with
LTC’s marketing.
Note 3: Not tested, guaranteed by design.
U W
TYPICAL PERFOR A CE CHARACTERISTICS
Passband Phase Shift vs
Frequency
Gain vs Frequency
Passband Group Delay
–45
0
220
200
180
160
140
120
100
80
15
0
V
T
CLK
= ±7.5V
V
T
= ±7.5V
= 25°C
V
S
= ±7.5V
= 25°C
S
A
S
= 25°C
T
A
A
C
CLK
f
= 2MHz, 50:1
f
f
= 20kHz
45
f
f
= 20kHz
C
CLK
= 1MHz, 50:1
= 1MHz, 50:1
–15
–30
–45
–60
–75
–90
–105
90
135
180
225
270
315
360
405
450
60
40
20
0
0
2
4
6
8
10 12 14 16 18 20 22
0
2
4
6
8
10 12 14 16 18 20 22
FREQUENCY (kHz)
10k
100k
FREQUENCY (Hz)
1M
FREQUENCY (kHz)
1064-4 G01
1064-4 G03
1064-4 G02
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LTC1064-4
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TYPICAL PERFOR A CE CHARACTERISTICS
Gain vs Frequency with
Compensation
Device to Device Phase Matching
Total Harmonic Distortion
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
1.0
0.1
5
0
f
f
= 1MHz, 50:1
CUTOFF
CLK
V
f
= ±7.5V
T
= 125°C
S
C
A
= 20kHz
= 20kHz
T
= 25°C
A
f
= 1MHz, 50:1
CLK
50 UNIT SAMPLE (T = 25°C TO 125°C)
–5
A
V
S
= ±5V
–10
–15
–20
–25
–30
–35
V
= ±2.37V
S
V
CLK
= ±7.5V
S
f
= 5MHz
RATIO = 50:1
V
= ±7.5V
S
FOR COMPENSATION INFORMATION
SEE PIN DESCRIPTION SECTION
0.01
0.1
1
10
10k
100k
1M
0
2
4
6
8
10 12 14 16 18 20 22
INPUT LEVEL (V
)
FREQUENCY (Hz)
FREQUENCY (kHz)
RMS
1064-4 G04
1064-4 G06
1064-4 G05
Power Supply Current vs Power
Supply Voltage
Transient Response
fCLK = 1MHz, Ratio = 50:1,
fC = 20kHz, VS = ±7.5V, 1kHz
Square Wave Input
48
44
40
36
32
28
24
20
16
12
8
f
= 1MHz
CLK
T
T
T
= –55°C
= 25°C
A
A
A
= 125°C
4
0
0.1ms/DIV
0
2
4
6 8 10 12 14 16 18 20 22 24
TOTAL POWER SUPPLY VOLTAGE (V)
1064-4 G07
Table 1. Wideband Noise (µVRMS). Input Grounded, fCLK = 1MHz
V = ±2.37V V = ±5V
V = ±7.5V
S
S
S
Noise
µV
Noise
Noise
Pin 10 to
f
/f
µV
µV
CLK CUTOFF
RMS
RMS
RMS
+
V
50:1
120
100
135
120
145
130
–
V
100:1
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LTC1064-4
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TYPICAL PERFOR A CE CHARACTERISTICS
Table 2. Gain/Phase, Pin 10 at V+, Typical Response
fCUTOFF = 1kHz, VS = ±5V, TA = 25°C, fCLK = 50kHz, Ratio = 50:1
FREQUENCY(kHz)
0.200
GAIN (dB)
– 0.075
– 0.050
0.020
PHASE (deg)
–59.990
–122.400
169.300
88.500
0.400
0.600
0.800
0.060
1.000
0.090
–26.100
–175.100
126.500
87.600
1.200
– 15.640
– 34.700
– 51.700
– 68.600
– 84.110
1.400
1.600
1.800
38.400
2.000
–47.860
Table 3. Gain/Delay, Pin 10 at V+, Typical Response
fCUTOFF = 1kHz, VS = ±5V, TA = 25°C, fCLK = 50kHz, Ratio = 50:1
Table 4. Gain/Phase, Pin 10 at V–, Typical Response
f –3dB = 1kHz, VS = ±5V, TA = 25°C, fCLK = 100kHz, Ratio = 100:1
FREQUENCY(kHz)
0.200
GAIN (dB)
– 0.074
– 0.070
– 0.050
– 0.020
0.020
DELAY (ms)
0.844
0.867
0.899
0.949
1.021
1.122
1.275
1.592
2.160
2.070
1.288
FREQUENCY(kHz)
0.200
GAIN (dB)
– 0.179
PHASE (deg)
–60.090
–122.000
170.800
91.900
0.300
0.400
– 0.440
0.400
0.600
– 0.810
0.500
0.800
– 1.480
0.600
1.000
– 3.500
–16.300
–140.500
164.800
135.000
114.000
–49.670
0.700
0.050
1.200
– 17.720
– 35.700
– 52.700
– 71.900
– 96.160
0.800
0.060
1.400
0.900
0.120
1.600
1.000
0.090
1.800
1.100
– 5.020
– 15.650
2.000
1.200
Table 5. Gain/Delay, Pin 10 at V–, Typical Response
f –3dB = 1kHz, VS = ±5V, TA = 25°C, fCLK = 100kHz, Ratio = 100:1
Table 6. Gain/Phase, Pin 10 at GND
VS = ±5V, TA = 25°C
FREQUENCY(kHz)
0.200
GAIN (dB)
– 0.174
– 0.300
– 0.440
– 0.610
– 0.810
– 1.090
– 1.480
– 2.080
– 3.500
– 8.720
– 17.720
DELAY (ms)
0.842
0.861
0.888
0.933
0.999
1.095
1.242
1.503
1.832
1.724
1.183
FREQUENCY(kHz)
0.200
GAIN (dB)
PHASE (deg)
–47.140
–92.000
–134.300
–178.800
109.200
– 0.383
– 1.000
– 1.300
– 0.280
2.670
0.300
0.400
0.400
0.600
0.500
0.800
0.600
1.000
0.700
1.200
– 3.500
– 12.510
– 20.000
– 27.300
– 35.000
6.000
0.800
1.400k
1.600
–47.400
–88.800
–127.800
–164.200
0.900
1.000
1.800
1.100
2.000
1.200
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LTC1064-4
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TYPICAL PERFOR A CE CHARACTERISTICS
Table 7. Gain/Phase for Figure 6.
Table 8. Gain/Phase for Figure 7.
Typical Response, Pin 10 at V+, fCUTOFF = 40kHz,
VS = ±7.5V, fCLK = 2MHz, Ratio = 50:1
Typical Response, Pin 10 at V+, fCUTOFF = 100kHz,
VS = ±7.5V, TA = 25°C, fCLK = 5MHz, Ratio = 50:1
FREQUENCY (kHz)
10.000
12.000
14.000
16.000
18.000
20.000
22.000
24.000
26.000
28.000
30.000
32.000
34.000
36.000
38.000
40.000
42.000
44.000
46.000
48.000
50.000
GAIN (dB)
–0.094
–0.100
–0.090
–0.080
–0.060
–0.040
–0.020
0.000
PHASE (deg)
–75.900
–91.400
–107.200
–123.300
–139.600
–156.500
–173.800
168.200
149.400
130.000
109.400
87.700
FREQUENCY (kHz)
10.000
GAIN (dB)
–0.096
–0.100
–0.080
–0.040
0.020
PHASE (deg)
–32.390
–64.900
–98.100
–132.300
–168.200
153.600
112.100
66.400
20.000
30.000
40.000
50.000
60.000
0.070
70.000
0.040
80.000
–0.120
–0.460
–1.310
–5.640
–14.530
–23.800
–32.600
–41.000
–49.200
–57.500
–66.500
–77.770
–92.050
0.020
90.000
14.600
0.030
100.000
110.000
120.000
130.000
140.000
150.000
160.000
170.000
180.000
190.000
200.000
–49.300
–129.000
167.800
126.700
96.200
0.020
0.010
–0.020
–0.030
–0.010
–0.070
–0.920
–4.000
–8.970
–14.320
–19.460
64.600
39.500
11.400
71.300
–22.000
–64.100
–110.100
–147.000
–173.500
166.800
49.200
29.000
9.800
–2.320
76.740
Table 9. Gain/Phase for Figure 7.
Typical Response, Pin 10 at V+ fCUTOFF = 100kHz,
VS = ±7.5V, TA = 125°C, fCLK = 5MHz, Ratio = 50:1
FREQUENCY (kHz)
10.000
GAIN (dB)
–0.071
–0.040
0.050
PHASE (deg)
–33.800
–67.800
–102.500
–138.300
–176.100
143.100
98.400
FREQUENCY (kHz)
110.000
GAIN (dB)
–7.420
PHASE (deg)
172.100
119.400
83.300
20.000
120.000
–18.240
–28.000
–37.000
–45.700
–54.300
–63.300
–73.610
–85.300
–83.390
30.000
130.000
40.000
0.190
140.000
54.000
50.000
0.410
150.000
–27.600
2.100
60.000
0.670
160.000
70.000
0.920
170.000
–24.900
–60.210
–138.990
129.580
80.000
1.150
48.200
180.000
90.000
1.530
–10.900
–96.500
190.000
100.000
1.110
200.000
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6
LTC1064-4
U
U
U
(Pin Numbers Refer to the 14-Pin Package)
PI FU CTIO S
INV C, COMP1, INV A, COMP2 (Pins 1, 6, 7 and 13): To
AGND (Pins 3, 5): For dual supply operation these pins
should be connected to a ground plane. For single supply
operation both pins should be tied to one half supply
(Figure 2).
V+, V– (Pins 4, 12): Should be bypassed with a 0.1µF
capacitor to an adequate analog ground. Low noise,
nonswitchingpowersuppliesarerecommended. Toavoid
latchup when the power supplies exhibit high turn-on
transients, a 1N5817 Schottky diode should be added
from the V+ and V– pins to ground (Figures 1 and 2).
obtain a Cauer response with minimum passband ripple
and cutoff frequencies above 20kHz, compensating com-
ponentsarerequired.Figure6uses±7.5Vpowersupplies
and compensation components to achieve up to 40kHz
sweepable cutofffrequenciesand±0.1dBpassbandripple.
Table 7 lists the typical amplitude response of Figure 6.
Figure 7 illustrates the compensation scheme required to
obtain a 100kHz cutoff frequency; Graph 4 and Tables 8
and 9 list the typical response of Figure 7 for 25°C and
125°C ambient temperature. As shown the ripple in-
creases at high temperatures but still a ±0.25dB figure
can be obtained for ambient temperatures below 70°C.
INV A, R(h, I) (Pins 7, 14): A very short connection
between Pin 7 and Pin 14 is recommended. This connec-
tion should be preferably done under the IC package. In a
breadboard,useaoneinch,orless,shieldedcoaxialcable;
the shield should be grounded. In a PC board, use a one
inch trace or less; surround the trace by a ground plane.
VIN,VOUT (Pins2,9):TheinputPin2isconnectedtoa12k
resistor tied to the inverting input of an op amp. Pin 2 is
protected against static discharge. The device’s output,
Pin 9, is the output of an op amp which can typically
source/sink3mA/1mA. Althoughtheinternalopampsare
unity gain stable, driving long coax cables is not recom-
mended.
NC (Pin 8 ): Pin 8 is not internally connected, it should be
preferably grounded.
50/100 Ratio (Pin 10): For an fCLK/fC ratio of 50:1,
Pin 10 should be tied to V+. For an fCLK/f–3dB ratio of
100:1, Pin 10 should be tied to V–. When Pin 10 is at
midsupplies (i.e. ground), the filter response is neither
Cauer nor transitional. Table 6 illustrates this response.
Bypassing Pin 10 with a 0.1µF capacitor reduces the
already small clock feedthrough.
When testing the device for noise and distortion, the
output, Pin 9, should be buffered (Figure 4). The op amp
power supply wire (or trace) should be connected
directly to the power source. To eliminate any output
clock feedthrough, Pin 9 should be buffered with a simple
R, C lowpass filter (Figure 5). The cutoff frequency of the
output filter should be fCLK/3.
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7
LTC1064-4
U
TYPICAL APPLICATIO S
1
2
3
4
5
6
7
1
2
3
4
5
6
7
14
13
12
11
10
9
14
13
12
11
10
9
R(h, I)
R(h, I)
INV C
INV C
V
V
IN
COMP2*
COMP2*
V
V
IN
IN
IN
LTC1064-4
LTC1064-4
–
–
–
V
V
AGND
V
AGND
0.1µF
1N5817
V
+
+
+
+
f
V = 15V
f
CLK
V
V
0V TO 10V
V
CLK
0.1µF
0.1µF
1N5817
0.1µF
+
–
50/100
50/100
AGND
1N5817
AGND
5k
V /V
V
OUT
V
OUT
COMP1*
INV A
COMP1*
INV A
V
OUT
OUT
+
V /2
8
8
5k
NC
NC
1064-4 F02
1064-4 F01
Figure 1. Using Schottky Diodes to Protect
the IC from Power Supply Spikes
Figure 2. Single Supply Operation. If Fast Power Up or Down
Transients are Expected, Use a 1N5817 Schottky Diode
Between Pin 4 and Pin 5.
POWER SOURCE
1
2
3
4
5
6
7
14
13
12
11
10
9
R(h, I)
1
2
3
4
5
6
7
14
13
12
11
10
9
R(h, I)
+
–
INV C
INV C
V
V
+
V
V
IN
COMP2*
V
IN
V
IN
V
IN
COMP2*
LTC1064-4
LTC1064-4
–
–
V
AGND
AGND
V
2.2k
0.1µF
2
T L
+
+
+
V
f
V
V
f
CLK
CLK
LEVEL
0.1µF
10k
0.1µF
1µF
5k
+
–
50/100
AGND
5k
V /V
1N5817
AGND
50/100
10k
V
OUT
V
OUT
COMP1*
INV A
COMP1*
INV A
V
OUT
–
+
8
8
5k
8
0.1µF
V
OUT
NC
NC
1064-4 F03
4
RECOMMENDED OP AMPS:
LT1022, LT318, LT1056
1064-4 F04
Figure 3. Level Shifting the Input T2L Clock
for Single Supply Operation ≥6V.
0.1µF
Figure 4. Buffering the Filter Output. The Buffer Op Amp
Should Not Share the LTC1064-4 Power Lines.
1
14
13
12
11
10
9
R(h, I)
INV C
2
3
4
5
6
7
COMP2*
V
V
–
IN
IN
V
LTC1064-4
–
V
AGND
10k
0.1µF
V
+
+
OUT
f
V
V
CLK
200pF
0.1µF
+
–
50/100
AGND
V /V
4.99k
4.99k
V
COMP1*
INV A
–
OUT
50Ω
8
LT1056
NC
430pF
0.027µF
+
1064-4 F05
Figure 5. Adding an Output Buffer-Filter to Eliminate Any Clock Feedthrough.
Passband Error of Output Buffer is ±0.1dB to 50kHz, –3dB at 94kHz.
10644fb
8
LTC1064-4
U
PACKAGE DESCRIPTIO
J Package
14-Lead CERDIP (Narrow 0.300, Hermetic)
(LTC DWG # 05-08-1110)
.785
(19.939)
MAX
.005
(0.127)
MIN
14
13
12
11
10
9
8
.220 – .310
(5.588 – 7.874)
.025
(0.635)
RAD TYP
2
3
4
5
6
1
7
.200
(5.080)
MAX
.300 BSC
(7.62 BSC)
.015 – .060
(0.381 – 1.524)
.008 – .018
(0.203 – 0.457)
0° – 15°
.045 – .065
(1.143 – 1.651)
.100
(2.54)
BSC
.125
(3.175)
MIN
.014 – .026
NOTE: LEAD DIMENSIONS APPLY TO SOLDER DIP/PLATE
OR TIN PLATE LEADS
(0.360 – 0.660)
J14 0801
OBSOLETE PACKAGE
10644fb
9
LTC1064-4
U
PACKAGE DESCRIPTIO
N Package
14-Lead PDIP (Narrow 0.300)
(LTC DWG # 05-08-1510)
.770*
(19.558)
MAX
14
13
12
11
10
9
8
7
.255 ± .015*
(6.477 ± 0.381)
1
2
3
5
6
4
.300 – .325
(7.620 – 8.255)
.045 – .065
(1.143 – 1.651)
.130 ± .005
(3.302 ± 0.127)
.020
(0.508)
MIN
.065
(1.651)
TYP
.008 – .015
(0.203 – 0.381)
+.035
.325
.005
(0.125)
MIN
–.015
.120
(3.048)
MIN
.018 ± .003
(0.457 ± 0.076)
.100
(2.54)
BSC
+0.889
8.255
(
)
–0.381
NOTE:
INCHES
MILLIMETERS
N14 1002
1. DIMENSIONS ARE
*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .010 INCH (0.254mm)
10644fb
10
LTC1064-4
U
PACKAGE DESCRIPTIO
SW Package
16-Lead Plastic Small Outline (Wide .300 Inch)
(Reference LTC DWG # 05-08-1620)
.050 BSC .045 ±.005
.030 ±.005
.398 – .413
(10.109 – 10.490)
NOTE 4
TYP
15 14
12
10
9
N
16
N
13
11
.325 ±.005
.420
MIN
.394 – .419
(10.007 – 10.643)
NOTE 3
N/2
8
1
2
3
N/2
RECOMMENDED SOLDER PAD LAYOUT
2
3
5
7
1
4
6
.291 – .299
(7.391 – 7.595)
NOTE 4
.037 – .045
(0.940 – 1.143)
.093 – .104
(2.362 – 2.642)
.010 – .029
× 45°
(0.254 – 0.737)
.005
(0.127)
RAD MIN
0° – 8° TYP
.050
(1.270)
BSC
.004 – .012
.009 – .013
(0.102 – 0.305)
NOTE 3
(0.229 – 0.330)
.014 – .019
.016 – .050
(0.356 – 0.482)
TYP
(0.406 – 1.270)
NOTE:
1. DIMENSIONS IN
INCHES
(MILLIMETERS)
S16 (WIDE) 0502
2. DRAWING NOT TO SCALE
3. PIN 1 IDENT, NOTCH ON TOP AND CAVITIES ON THE BOTTOM OF PACKAGES ARE THE MANUFACTURING OPTIONS.
THE PART MAY BE SUPPLIED WITH OR WITHOUT ANY OF THE OPTIONS
4. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm)
10644fb
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-
tationthattheinterconnectionofitscircuitsasdescribedhereinwillnotinfringeonexistingpatentrights.
11
LTC1064-4
U
TYPICAL APPLICATIO S
5pF
30pF
1M
1M
1
2
3
4
5
6
7
1
2
3
4
5
6
7
14
13
12
11
10
9
14
13
12
11
10
9
R(h, I)
R(h, I)
INV C
INV C
V
IN
COMP2*
LTC1064-4
V
IN
COMP2*
V
IN
V
IN
LTC1064-4
–
–
–7.5V
–7.5V
AGND
V
AGND
V
0.1µF
0.1µF
+
+
V
≤2MHz
f
5MHz
7.5V
V
f
7.5V
CLK
CLK
0.1µF
0.1µF
+
+
AGND
50/100
V
AGND
V
50/100
COMP1*
INV A
V
COMP1*
INV A
V
V
OUT
V
OUT
OUT
OUT
453k
453k
8
8
NC
NC
1064-4 F06
1064-4 F07
5pF
30pF
Figure 6. Compensating LTC1064-4 for Passband
Ripple of ±0.1dB and fCUTOFF Sweeps to 40kHz.
Figure 7. Compensating LTC1064-4 for fCUTOFF = 100kHz,
Gain at fCUTOFF = –1.3dB, Table 8.
RELATED PARTS
PART NUMBER
LTC1069-1
LTC1069-6
LTC1569-6
LTC1569-7
DESCRIPTION
COMMENTS
8th Order Elliptic Lowpass
S0-8 Package, Low Power
Single Supply, 8th Order Elliptic Lowpass
DC Accurate, 10th Order Lowpass
DC Accurate, 10th Order Lowpass
S0-8 Package, Very Low Power
Internal Precision Clock, Low Power, S0-8 Package
Internal Precision Clock, Delay Equalized, S0-8 Package
10644fb
LW/TP 1202 1K REV B • PRINTED IN USA
12 LinearTechnology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
■
■
(408) 432-1900 FAX: (408) 434-0507 www.linear.com
LINEAR TECHNOLOGY CORPORATION 1991
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