LTC1069CS8 Linear Technology, LTC1069CS8 Datasheet

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LTC1069CS8

Manufacturer Part Number
LTC1069CS8
Description
Manufacturer
Linear Technology
Datasheet

Specifications of LTC1069CS8

Lead Free Status / RoHS Status
Not Compliant
APPLICATIONS
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other
trademarks are the property of their respective owners.
TYPICAL APPLICATION
FEATURES
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n
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n
n
n
n
n
n
n
n
n
8th Order Elliptic Filter in SO-8 Package
Operates from Single 3.3V to ±5V Power Supplies
–20dB at 1.2f
–52dB at 1.4f
–70dB at 2f
Wide Dynamic Range
110μV
3.8mA Supply Current with ±5V Supplies
2.5mA Supply Current with Single 5V Supply
2mA Supply Current with Single 3.3V Supply
Telecommunication Filters
Antialiasing Filters
Single 3.3V Supply 3kHz Elliptic Lowpass Filter
RMS
+
Wideband Noise
3.3V
CUTOFF
0.47μF
0.1μF
CUTOFF
CUTOFF
V
IN
AGND
V
NC
V
+
IN
LTC1069-1
V
CLK
OUT
NC
V
V
f
300kHz
CLK
OUT
1069-1 TA01
DESCRIPTION
The LTC
featuring clock-tunable cutoff frequency and 2.5mA power
supply current with a single 5V supply. An additional feature
of the LTC1069-1 is operation with a single 3.3V supply.
The cutoff frequency (f
to the clock frequency divided by 100. The gain at f
is –0.7dB and the typical passband ripple is ±0.15dB up
to 0.9f
features a progressive elliptic response reaching 20dB
attenuation at 1.2f
and 70dB attenuation at 2f
With ±5V supplies, the LTC1069-1 cutoff frequency can
be clock-tuned up to 12kHz; with a single 5V supply, the
maximum cutoff frequency is 8kHz.
The low power feature of the LTC1069-1 does not penal-
ize the device’s dynamic range. With ±5V supplies and an
input range of 0.3V
THD) ratio is ≥70dB. The wideband noise of the LTC1069-1
is 110μV
higher speed can be obtained. Please contact LTC market-
ing for details.
The LTC1069-1 is available in 8-pin PDIP and 8-pin SO
packages.
CUTOFF
®
RMS
1069-1 is a monolithic 8th order lowpass fi lter
Low Power, 8th Order
–10
–20
–30
–40
–50
–60
–70
–80
. The stopband attenuation of the LTC1069-1
10
. Other fi lter responses with lower power or
0
1.5
Progressive Elliptic,
CUTOFF
RMS
Frequency Response
3
CUTOFF
to 2.5V
FREQUENCY (kHz)
, 52dB attenuation at 1.4f
CUTOFF
Lowpass Filter
4.5
) of the LTC1069-1 is equal
RMS
.
, the signal-to-(noise +
6
LTC1069-1
10691 TA02
7.5
CUTOFF
CUTOFF
10691fa
1

Related parts for LTC1069CS8

LTC1069CS8 Summary of contents

Page 1

... Supply Current with Single 3.3V Supply APPLICATIONS n Telecommunication Filters n Antialiasing Filters L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. TYPICAL APPLICATION Single 3.3V Supply 3kHz Elliptic Lowpass Filter + AGND ...

Page 2

LTC1069-1 ABSOLUTE MAXIMUM RATINGS (Note 1) + – Total Supply Voltage ( .................................12V Maximum Voltage at – Any Pin .............................(V – 0.3V) ≤ V ≤ (V+ + 0.3V) PIN CONFIGURATION TOP VIEW AGND ...

Page 3

ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are signal level is TTL or CMOS (clock rise or fall time ≤ 1μs), V CLK measured relative to the passband gain. PARAMETER Gain at 0.50f CUTOFF Gain at 0.75f ...

Page 4

LTC1069-1 TYPICAL PERFORMANCE CHARACTERISTICS Passband Gain vs Frequency 1 ± 500kHz CLK f = 5kHz C 0 RMS 0.4 0.2 0 –0.2 –0.4 –0.6 –0.8 –1.0 0.5 1.0 1.5 2.0 ...

Page 5

TYPICAL PERFORMANCE CHARACTERISTICS Dynamic Range THD + Noise RMS – 500kHz CLK – 1kHz IN – –55 5V ±5V – 3.3V S –65 ...

Page 6

LTC1069-1 PIN FUNCTIONS AGND (Pin 1): Analog Ground. The quality of the analog signal ground can affect the fi lter performance. For either single or dual supply operation, an analog ground plane surrounding the package is recommended. The analog ground ...

Page 7

APPLICATIONS INFORMATION Temperature Behavior The power supply current of the LTC1069-1 has a positive temperature coeffi cient. The GBW product of its internal op amps is nearly constant and the speed of the device does not degrade at high temperatures. ...

Page 8

LTC1069-1 APPLICATIONS INFORMATION Aliasing Aliasing is an inherent phenomenon of sampled data systems and it occurs for input frequencies approaching the sampling frequency. The internal sampling frequency of the LTC1069-1 is 100 times its cutoff frequency. For instance ...

Page 9

... MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm) 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 representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...

Page 10

... IN 0 INPUT VOLTAGE (V ) RMS 10691 TA03 COMMENTS User-Confi gurable, SSOP Package 50 Ratio, 8-Pin SO Package CLK C 100:1 and 50 Ratio CLK C 100:1 and 50 Ratio CLK C 100:1 and 50 Ratio CLK C LT 0309 REV A • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 1996 10691fa ...

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