LTC1067C 查看數據表（PDF） - Linear Technology
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LTC1067C Datasheet PDF : 20 Pages
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LTC1067/LTC1067-50
ELECTRICAL CHARACTERISTICS
LTC1067-50 (complete filter) VS = 4.75V, fCLK = 125kHz, TA = 25°C, unless otherwise noted.
PARAMETER
CONDITIONS
MIN
TYP
fO Temperature Coefficient
±1
Q Temperature Coefficient
±5
DC Offset Voltage (See Table 2)
Clock Feedthrough
VOS1 (DC Offset of Input Inverter)
VOS2 (DC Offset of First Integrator)
VOS3 (DC Offset of Second Integrator)
q
±3
q
±4
q
±4
150
Maximum Clock Frequency
Power Supply Current
Q < 2.5, VS = ±5V
VS = 3V, fCLK = 125kHz
VS = 4.75V, fCLK = 125kHz
VS = ±5V, fCLK = 250kHz
2.0
q
1.00
q
1.45
q
2.35
The q denotes the specifications which apply over the full operating
temperature range.
Note 1: See Typical Performance Characteristics.
MAX
±12.5
±15.0
±15.0
2.5
3.0
4.0
UNITS
ppm/°C
ppm/°C
mV
mV
mV
µVRMS
MHz
mA
mA
mA
TYPICAL PERFORMANCE CHARACTERISTICS
LTC1067 Maximum Q vs
Center Frequency
(Modes 1, 1B, 2 where R4 ≥ 10R2)
50
VS = ±5V
40
fCLK(MAX) = 2MHz
VS = 5V
fCLK(MAX) = 1.5MHz
30
VS = 3.3V
fCLK(MAX) = 1MHz
20
LTC1067 Maximum Q vs
Center Frequency
(Modes 2 where R4 < 10R2, 3)
50
40
VS = ±5V
fCLK(MAX) = 2MHz
VS = 5V
30
fCLK(MAX) = 1.5MHz
VS = 3.3V
20
fCLK(MAX) = 1MHz
10
10
0
0
5
10
15
20
CENTER FREQUENCY, fO (kHz)
1067 G01
LTC1067
Noise + THD vs Input Voltage
–20
4TH ORDER BUTTERWORTH LPF
–30 VS = SINGLE 5V, fIN = 1kHz
fCLK = 500kHz, f–3dB = 5kHz
–40 RL = 20k
–50
–60
–70
MODE 1
–80
MODE 3
–90
–100
0.1
1
INPUT VOLTAGE (VRMS)
2
1067 G04
0
0
5
10
15
20
CENTER FREQUENCY, fO (kHz)
1067 G02
LTC1067
Noise + THD vs Input Voltage
–20
4TH ORDER BUTTERWORTH LPF
–30 VS = ±5V, fIN = 1kHz
fCLK = 500kHz, f–3dB = 5kHz
–40 RL = 20k
–50
–60
–70
MODE 2
–80
MODE 1
–90
MODE 3
–100
0.1
1
INPUT VOLTAGE (VRMS)
5
1067 G05
4
LTC1067
Noise + THD vs Input Voltage
–20
4TH ORDER BUTTERWORTH LPF
–30 VS = SINGLE 3.3V, fIN = 1kHz
fCLK = 400kHz, f–3dB = 4kHz
–40 RL = 20k
–50
–60
–70
MODE 1
–80
MODE 3
–90
–100
0.1
1
INPUT VOLTAGE (VRMS)
2
1067 G03
LTC1067
Noise + THD vs Input Frequency
–60
–65
MODE 1
–70
–75
–80
MODE 3
–85
–90
1
4TH ORDER BUTTERWORTH LPF
VS = SINGLE 3.3V
fCLK = 400kHz, VIN = 0.36VRMS
f–3dB = 4kHz, RL = 20k
2
3
45
INPUT FREQUENCY (kHz)
1067 G06
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