參數(shù)資料
型號(hào): LTC1565-31CS8
廠商: LINEAR TECHNOLOGY CORP
元件分類: 運(yùn)動(dòng)控制電子
英文描述: 650kHz Continuous Time, Linear Phase Lowpass Filter
中文描述: CONTINUOUS TIME FILTER, BESSEL, LOWPASS, PDSO8
封裝: 0.150 INCH, PLASTIC, SO-8
文件頁(yè)數(shù): 3/8頁(yè)
文件大?。?/td> 136K
代理商: LTC1565-31CS8
3
LTC1565-31
Note 1:
Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2:
Input and output voltages expressed as peak-to-peak numbers are
assumed to be fully differential.
Note 3:
Output DC offset is measured between Pin 8 and Pin 7 with Pin 1
and Pin 2 connected to Pin 3.
Note 4:
A 250mV
P-P
, 100kHz differential signal is applied to Pins 1 and 2.
The DC voltages at Pins 1 and 2 are equal. This is the “common mode
PARAMETER
Output DC Offset Drift
CONDITIONS
V
S
= 5V
V
S
=
±
5V
V
S
= 5V
MIN
TYP
–400
–400
2.51
MAX
UNITS
μ
V/
°
C
μ
V/
°
C
Ground Voltage (Pin 3) in
Single Supply Applications
SHDN Pin Logic Thresholds
G
2.49
2.52
V
V
S
= 5V, Minimum Logical “1”
V
S
= 5V, Maximum Logical “0”
V
S
=
±
5V, Minimum Logical “1”
V
S
=
±
5V, Maximum Logical “0”
V
S
= 5V
V
S
=
±
5V
V
S
= 5V
V
S
=
±
5V
Shutdown. Includes SHDN Pull-Up Current
V
S
= 5V
V
S
=
±
5V
4.2
3.3
2.75
2.50
5
9
24
25
V
V
V
V
SHDN Pin Pull-Up Current
μ
A
μ
A
mA
mA
Power Supply Current
G
G
31
33
Power Supply Current in Shutdown Mode
G
G
4
8
16
40
μ
A
μ
A
10
20
voltage.” The “common mode range” is the range of common mode
voltages for which the 250mV
P-P
differential output has better than 65dB
2nd or 3rd harmonic distortion.
Note 5:
Thermal resistance varies depending upon the amount of PC board
metal attached to the device.
θ
JA
is specified for a 3.8 square inch test
board covered with 2 oz copper on both sides.
Note 6:
Output DC offset measurements are performed by automatic test
equipment approximately 0.5 seconds after application of power.
+IN, –IN (Pins 1, 2):
Input Pins. Signals can be applied to
either or both input pins. The DC gain from differential
inputs (Pin 1 to Pin 2) to the differential outputs (Pin 8 to
Pin 7) is 1.0V/V. The input range is described in the
Applications Information section.
GND (Pin 3):
Ground. The ground pin is the reference
voltage for the filter and is internally biased to one-half the
total power supply voltage of the filter, maximizing the
dynamic range of the filter. For single supply operation,
the ground pin should be bypassed with a quality 0.1
μ
F
ceramic capacitor to Pin 4. For dual supply operation,
connect Pin 3 to a high quality DC ground. A ground plane
should be used. A poor ground will increase noise and
distortion.
PI
FU
CTIO
N
S
U
U
The impedance seen at Pin 3 is 2.5k
in normal mode. In
shutdown, the pin is internally biased to the same levels
as normal mode. The impedance in shutdown mode is
typically 500k
but varies with supply voltage and
temperature.
V
, V
+
(Pins 4, 6):
Power Supply Pins. For a single 5V
supply (Pin 4 grounded), a quality 0.1
μ
F ceramic bypass
capacitor is required from the positive supply pin (Pin 6)
to the negative supply pin (Pin 4). The bypass should be as
close as possible to the IC. For dual supply applications
(Pin 3 is grounded), bypass Pin 6 to Pin 3 and Pin 4 to Pin
3 with a quality 0.1
μ
F ceramic capacitor.
The maximum voltage difference between the ground pin
(Pin 3) and the positive supply pin (Pin 6) should not
exceed 5.5V.
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
A
= 25
°
C. V
S
= 5V (V
+
= 5V, V
= 0V), R
LOAD
= 10k from each output to AC ground,
and Pin 5 open unless otherwise specified.
The
G
denotes the specifications which apply over the full operating
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