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参数资料
| 型号： | LT1568 |
| 厂商： | Linear Technology Corporation |
| 英文描述： | Very Low Noise, High Frequency Active RC, Filter Building Block |
| 中文描述： | 极低噪声，高频有源RC，滤波器积木 |
| 文件页数： | 4/16页 |
| 文件大小： | 271K |
| 代理商： | LT1568 |
LT1568
4
1568f
SYMBOL
PARAMETER
Filter Gain, f
C
= 1MHz,
V
S
= 5V, R
FIL
= 1.28k
(Measured with Respect to DC Gain)
CONDITIONS
Test Frequency = 300kHz (0.3 f
C
)
Test Frequency = 750kHz (0.75 f
C
)
Test Frequency = 1MHz (1 f
C
)
Test Frequency = 2MHz (2 f
C
)
Test Frequency = 4MHz (4 f
C
)
Test Frequency = 1MHz (0.1 f
C
)
Test Frequency = 7.5MHz (0.75 f
C
)
Test Frequency = 10MHz (1 f
C
)
Test Frequency = 20MHz (2 f
C
)
Test Frequency = 40MHz (4 f
C
)
f
C
= 1MHz, f
IN
= f
C
f
C
= 10MHz, f
IN
= f
C
f
C
= 1MHz, R
FIL
= 1.28k, BW = 2MHz
f
C
= 10MHz, R
FIL
= 128
, BW = 20MHz
f
C
= 1MHz, R
FIL
= 1.28k,
f
IN
= 200kHz, V
IN
= 1V
P-P
f
C
= 10MHz, R
FIL
= 128
,
f
IN
= 2MHz, V
IN
= 1V
P-P
MIN
–0.05
–1.45
–3.60
–13.7
TYP
0.05
–1.20
–3.20
–13.2
–25.0
0.02
–1.0
–3.0
–13.2
–27.5
±
0.02
±
0.02
18
34
–84
MAX
0.25
–0.85
–2.80
–12.5
UNITS
G
G
G
G
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
Filter Gain, f
C
= 10MHz,
V
S
= 5V, R
FIL
= 128
(Measured with Respect to DC Gain)
G
G
G
G
–0.1
–1.5
–3.5
–14.2
0.25
–0.50
–2.40
–12.2
Filter Gain Mismatch
(
V
OUTA
–
V
OUTB
)
Wideband Output Noise
G
G
–0.25
–0.30
0.25
0.30
μ
V
RMS
μ
V
RMS
THD
Total Harmonic Distortion
dB
–69
dB
Specifications are for the OUTA or OUTB of a single 2nd order section(A or B) with respect to V
GND
= V
GNDA
= V
GNDB
, gain = 1,
R
FIL
= R11 = R21 = R31 = R12 = R22 = R32, (see Block Diagram) The
G
denotes the specifications which apply over the full
operating temperature range, otherwise specifications and typical values are at T
A
= 25
°
C. V
S
= single 5V, EN pin to logic “low,”
R
L
= 400
connected to midsupply, unless otherwise noted.
Specifications are for the output (OUTA or OUTB) of a single 2nd order section(A or B) with respect to V
GND
= V
GNDA
= V
GNDB
,
gain = –1, R
FIL
= R11 = R21 = R31 = R12 = R22 = R32, (see Block Diagram). The
G
denotes the specifications which apply over the
full operating temperature range, otherwise specifications and typical values are at T
A
= 25
°
C. V
S
= single 5V, EN pin to logic “low,”
R
L
= 400
connected to midsupply, unless otherwise noted.
SYMBOL
ADC
V
OS(OUT)
PARAMETER
DC Gain
DC Offset Voltage
(V
OUTA
– V
GNDA
) or (V
OUTB
– V
GNDB
)
DC Offset Voltage Mismatch
(V
OUTA
– V
GNDA
) – (V
OUTB
– V
GNDB
)
Transfer Function Characteristics for Each Section (A or B) to Single-Ended Output (OUTA or OUTB)
f
C
Cutoff Frequency Range (Note 7)
TC
Cutoff Frequency Temperature Coefficient
Filter Gain, f
C
= 1MHz,
V
S
= 5V, R
FIL
= 1.28k
(Measured with Respect to DC Gain)
CONDITIONS
MIN
0.99
–9
–10
–8
–10
TYP
1
–2
–1
±
2
±
2
MAX
1.01
5
10
8
10
UNITS
V/V
mV
mV
mV
mV
G
V
S
= 3V, f
C
= 1MHz, R
FIL
= 1.28k
V
S
= 5V, V
S
=
±
5V, f
C
= 1MHz, R
FIL
= 1.28k
V
S
= 3V, f
C
= 1MHz, R
FIL
= 1.28k
V
S
= 5V, V
S
=
±
5V, f
C
= 1MHz, R
FIL
= 1.28k
G
G
V
OS(OUT)
G
G
V
S
= 3V, V
S
= 5V, V
S
=
±
5V
G
0.2
10
MHz
G
±
1
ppm/
°
C
Test Frequency = 300kHz (0.3 f
C
)
Test Frequency = 750kHz (0.75 f
C
)
Test Frequency = 1MHz (1 f
C
)
Test Frequency = 2MHz (2 f
C
)
Test Frequency = 4MHz (4 f
C
)
G
G
G
G
–0.10
–1.40
–3.50
–13.7
0.15
–1.00
–3.10
–13.0
–25.0
0.40
–0.65
–2.60
–12.5
dB
dB
dB
dB
dB
FILTER ELECTRICAL CHARACTERISTICS
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