LTC1569CS8-6#PBF Linear Technology, LTC1569CS8-6#PBF Datasheet

IC FILTER 10TH ORDR LOWPASS8SOIC

LTC1569CS8-6#PBF

Manufacturer Part Number
LTC1569CS8-6#PBF
Description
IC FILTER 10TH ORDR LOWPASS8SOIC
Manufacturer
Linear Technology
Datasheet

Specifications of LTC1569CS8-6#PBF

Filter Type
Linear Phase, Lowpass Switched Capacitor
Frequency - Cutoff Or Center
300kHz
Number Of Filters
1
Max-order
10th
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Supply
-

Available stocks

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Manufacturer
Quantity
Price
Company:
Part Number:
LTC1569CS8-6#PBFLTC1569CS8-6
Manufacturer:
LT
Quantity:
10 000
Company:
Part Number:
LTC1569CS8-6#PBFLTC1569CS8-6
Manufacturer:
LINEAR/凌特
Quantity:
20 000
Company:
Part Number:
LTC1569CS8-6#PBF
Manufacturer:
LTC
Quantity:
457
Company:
Part Number:
LTC1569CS8-6#PBF
Manufacturer:
LT/凌特
Quantity:
20 000
Company:
Part Number:
LTC1569CS8-6#PBF
Quantity:
2 500
DESCRIPTIO
FEATURES
APPLICATIO S
The LTC
linear phase and a root raised cosine amplitude response.
The high selectivity of the LTC1569-6 combined with its
linear phase in the passband makes it suitable for filtering
both in data communications and data acquisition sys-
TYPICAL APPLICATIO
Data Communication Filters for 3V Operation
Linear Phase and Phase Matched Filters for I/Q
Signal Processing
Pin Programmable Cutoff Frequency Lowpass Filters
One External R Sets Cutoff Frequency
Root Raised Cosine Response
3mA Supply Current with a Single 3V Supply
Up to 64kHz Cutoff on a Single 3V Supply
10th Order, Linear Phase Filter in an SO-8
DC Accurate, V
Low Power Modes
Differential or Single-Ended Inputs
80dB CMRR (DC)
82dB Signal-to-Noise Ratio, V
Operates from 3V to 5V Supplies
3V
Single 3V Supply, 64kHz/16kHz/4kHz Lowpass Filter
3.48k
2k
®
1569-6 is a 10th order lowpass filter featuring
1 F
V
IN
EASY TO SET f
f
CUTOFF
OS(MAX)
1
2
3
4
U
U
IN
IN
GND
V
LTC1569-6
+
=
64kHz (10k/R
DIV/CLK
1, 4 OR 16
CUTOFF
= 5mV
OUT
V
R
+
X
:
8
7
6
5
EXT
S
V
1/16
U
R
)
1/1
OUT
= 5V
EXT
= 10k
1/4
1569-6 TA01
1 F
Low Power, 10th Order Lowpass Filter
100pF
3V
3V
tems. Furthermore, its root raised cosine response offers
the optimum pulse shaping for PAM data communica-
tions . The filter attenuation is 50dB at 1.5 • f
at 2 • f
accuracy-sensitive applications benefit from the 5mV
maximum DC offset.
The LTC1569-6 sampled data filter does not require an
external clock yet its cutoff frequency can be set with a
single external resistor with a typical accuracy of 3.5% or
better . The external resistor programs an internal oscilla-
tor whose frequency is divided by either 1, 4 or 16 prior to
being applied to the filter network. Pin 5 determines the
divider setting. Thus, up to three cutoff frequencies can be
obtained for each external resistor value. Using various
resistor values and divider settings, the cutoff frequency
can be programmed over a range of six octaves. Alterna-
tively, the cutoff frequency can be set with an external
clock and the clock-to-cutoff frequency ratio is 64:1. The
ratio of the internal sampling rate to the filter cutoff
frequency is 128:1.
The LTC1569-6 is fully tested for a cutoff frequency of
64kHz with a single 3V supply.
The LTC1569-6 features power saving modes and it is
available in an SO-8 surface mount package.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Linear Phase, DC Accurate,
Frequency Response, f
CUTOFF
–100
–20
–40
–60
–80
, and in excess of 80dB at 6 • f
0
1
FREQUENCY (kHz)
10
CUTOFF
= 64kHz/16kHz/4kHz
100
LTC1569-6
1569-6 TA01a
1000
CUTOFF
CUTOFF
, 60dB
. DC-
1

Related parts for LTC1569CS8-6#PBF

LTC1569CS8-6#PBF Summary of contents

Page 1

... The LTC1569-6 is fully tested for a cutoff frequency of 64kHz with a single 3V supply. The LTC1569-6 features power saving modes and it is available in an SO-8 surface mount package. , LTC and LT are registered trademarks of Linear Technology Corporation. Frequency Response, f OUT = 10k EXT 3V ...

Page 2

... IN CUTOFF f = 50kHz = 0.8 • CUTOFF f = 62.5kHz = f IN CUTOFF f = 93.75kHz = 1.5 • CUTOFF = 20k LOAD U W ORDER PART TOP VIEW NUMBER 1 8 OUT LTC1569CS8 LTC1569IS8 DIV/CLK PART S8 PACKAGE MARKING 8-LEAD PLASTIC SO 15696 = 125 C, = 150 C/W JMAX JA 1569I6 MIN TYP – ...

Page 3

ELECTRICAL C HARA TERISTICS C The denotes the specifications which apply over the full operating temperature range, otherwise specifications are – 3V 0V 4.096MHz CLK PARAMETER ...

Page 4

LTC1569 TYPICAL PERFOR A CE CHARACTERISTICS Gain vs Frequency 10 –10 –30 –50 –70 –90 2.5 10 100 FREQUENCY (kHz) THD vs Input Frequency –60 – –70 PIN –75 –80 V ...

Page 5

PIN FUNCTIONS + – IN /IN (Pins 1, 2): Signals can be applied to either or both input pins. The DC gain from IN (Pin 8) is 1.0, and the DC gain from Pin 2 to Pin ...

Page 6

LTC1569-6 W BLOCK DIAGRA + IN – IN GND – APPLICATIONS INFORMATION Self-Clocking Operation The LTC1569-6 features a unique internal oscillator which sets the filter cutoff frequency using a single external resistor . The design is optimized ...

Page 7

U U APPLICATIONS INFORMATION Using the equation in Figure 1, the approximate filter cutoff frequency 64kHz • (10k/20k) CUTOFF • (1/16) = 2kHz. For a more precise f estimate, use Table 1 to get CUTOFF a value ...

Page 8

LTC1569 APPLICATIONS INFORMATION 16. EXT R = 10k EXT R = 20k EXT R = 40k EXT 16.16 16.00 15. (V) SUPPLY Figure 6. Typical Divide Ratio in the Divide-by-16 Mode, ...

Page 9

U U APPLICATIONS INFORMATION shown in the Typical Applications section. The CUTOFF typical variation in dynamic input impedance for a given clock frequency is 10%. Wideband Noise The wideband noise of the filter is the RMS value ...

Page 10

LTC1569 APPLICATIONS INFORMATION quency. The LTC1569-6 samples the input signal twice every clock period. Therefore, the sampling frequency is twice the clock frequency and 128 times the filter cutoff – – – GND ...

Page 11

... SEE APPLICATIONS INFORMATION, “INPUT AND OUTPUT VOLTAGE RANGE” 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- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...

Page 12

... Very Low Noise = 50/1 or 100/ 100kHz CUTOFF(MAX) = 25/ 200kHz, SO-8 CUTOFF(MAX) = 50/1 or 100/ 2.5mA 25/1 or 50/ 200kHz CUTOFF(MAX) = 150kHz (LTC1562) = 300kHz (LTC1562-2) = 300kHz, Very Low Noise = 300kHz, No Clock Required 15696f LT/TP 0500 4K • PRINTED IN THE USA LINEAR TECHNOLOGY CORPORATION 1999 1569-6 TA09 SO8 1298 ...

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