LTC1067 Просмотр технического описания (PDF) - Linear Technology
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LTC1067 Datasheet PDF : 20 Pages
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LTC1067/LTC1067-50
TYPICAL PERFORMANCE CHARACTERISTICS
LTC1067
Noise + THD vs Input Frequency
–75
MODE 1
–80
MODE 3
–85
4TH ORDER BUTTERWORTH LPF
VS = SINGLE 5V, fCLK = 500kHz
VIN = 0.5VRMS, f–3dB = 5kHz, RL = 20k
–90
1
2
3
45
INPUT FREQUENCY (kHz)
1067 G07
LTC1067
Output Voltage Swing vs Load
Resistance, ±5V Supply Voltage
10.0
9.8 VS = ±5V
9.6
9.4
9.2
9.0
8.8
8.6
8.4
8.2
8.0
0 2 4 6 8 10 12 14 16 18 20
LOAD RESISTANCE (kΩ TO GND)
1067 G10
LTC1067-50
Maximum Q vs Center Frequency
(Modes 2 Where R4 < 10R2, 3)
50
VS = ±5V
40
fCLK(MAX) = 2MHz
VS = 5V
fCLK(MAX) = 1.5MHz
30
VS = 3.3V
fCLK(MAX) = 800kHz
20
VS = 3V
fCLK(MAX) = 600kHz
10
0
0
10
20
30
40
CENTER FREQUENCY, fO (kHz)
1067 G13
LTC1067
Noise + THD vs Input Frequency
–75
4TH ORDER LOWPASS
BUTTERWORTH
VS = ±5V, VIN = 1VRMS
fCLK = 1MHz, f–3dB = 10kHz
–80 RL = 20k
MODE 1
–85
MODE 3
–90
1
2
3 4 5 6 7 8 9 10
INPUT FREQUENCY (MHz)
1067 G08
LTC1067
Output Voltage Swing vs Load
Resistance, Single Supply Voltage
5.0
4.5
VS = 5V
4.0
3.5
VS = 3.3V
3.0
2.5
2.0
1.5
1.0
0
2 4 6 8 10 12 14 16 18 20
LOAD RESISTANCE (kΩ TO V–)
1067 G11
LTC1067-50
Maximum Q vs Center Frequency
(Modes 1, 1B, 2 Where R4 ≥ 10R2)
50
VS = ±5V
40
fCLK(MAX) = 2MHz
VS = 5V
30
fCLK(MAX) = 1.5MHz
VS = 3.3V
fCLK(MAX) = 800kHz
20
VS = 3V
fCLK(MAX) = 600kHz
10
0
0
10
20
30
40
CENTER FREQUENCY, fO (kHz)
1067 G14
LTC1067
Noise vs Q
220
200
180
160
140
120
100
80
60
40
20
0
0
10
±5V
5V
3V
20
30
Q
40
50
1067 G09
LTC1067
Power Supply Current
vs Power Supply
4.5
4.0
70°C
3.5
3.0
–20°C
2.5
25°C
2.0
1.5
0
3 4 5 6 7 8 9 10
TOTAL POWER SUPPLY (V)
1067 G12
LTC1067-50
Noise + THD vs Input Voltage
–20
4TH ORDER BUTTERWORTH LPF
–30 VS = SINGLE 3V, fIN = 1kHz
fCLK = 200kHz, f–3dB = 4kHz
–40
–50
–60
–70
MODE 1
–80
MODE 3
–90
–100
0.1
1
INPUT VOLTAGE (VRMS)
2
1067 G15
5
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