Datasheet

5
LTC1067/LTC1067-50
TYPICAL PERFORMANCE CHARACTERISTICS
U
W
INPUT FREQUENCY (kHz)
1345
(NOISE + THD)/SIGNAL (dB)
–75
–80
–85
–90
2
1067 G07
4TH ORDER BUTTERWORTH LPF
V
S
= SINGLE 5V, f
CLK
= 500kHz
V
IN
= 0.5V
RMS,
f
–3dB
= 5kHz, R
L
= 20k
MODE 1
MODE 3
LTC1067
Noise + THD vs Input Frequency
INPUT FREQUENCY (MHz)
13 10
1067 G08
245
6
78
9
(NOISE + THD)/SIGNAL (dB)
–75
–80
–85
–90
MODE 1
MODE 3
4TH ORDER LOWPASS
BUTTERWORTH
V
S
= ±5V, V
IN
= 1V
RMS
f
CLK
= 1MHz, f
–3dB
= 10kHz
R
L
= 20k
Q
0
NOISE (µV
RMS
)
220
200
180
160
140
120
100
80
60
40
20
0
40
1067 G09
10
20
30
50
5V
±5V
3V
LTC1067
Noise vs Q
LTC1067
Noise + THD vs Input Frequency
LTC1067
Output Voltage Swing vs Load
Resistance, ±5V Supply Voltage
LTC1067
Output Voltage Swing vs Load
Resistance, Single Supply Voltage
LOAD RESISTANCE (kΩ TO GND)
10.0
9.8
9.6
9.4
9.2
9.0
8.8
8.6
8.4
8.2
8.0
OUTPUT VOLTAGE SWING (V
P-P
)
1067 G10
100 2 4 6 8 12 14 16 18 20
V
S
= ±5V
LOAD RESISTANCE (kΩ TO V
–
)
OUTPUT VOLTAGE SWING (V
P-P
)
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
1067 G11
100 2 4 6 8 12 14 16 18 20
V
S
= 5V
V
S
= 3.3V
LTC1067
Power Supply Current
vs Power Supply
TOTAL POWER SUPPLY (V)
3
4.5
4.0
3.5
3.0
2.5
2.0
1.5
0
68
1067 G12
45
7910
POWER SUPPLY CURRENT (mA)
70°C
25°C
–20°C
LTC1067-50
Maximum Q vs Center Frequency
(Modes 2 Where R4 < 10R2, 3)
LTC1067-50
Maximum Q vs Center Frequency
(Modes 1, 1B, 2 Where R4 ≥ 10R2)
CENTER FREQUENCY, f
O
(kHz)
0
MAXIMUM Q
40
1067 G13
10
20
30
50
40
30
20
10
0
V
S
= 3.3V
f
CLK(MAX)
= 800kHz
V
S
= 5V
f
CLK(MAX)
= 1.5MHz
V
S
= ±5V
f
CLK(MAX)
= 2MHz
V
S
= 3V
f
CLK(MAX)
= 600kHz
CENTER FREQUENCY, f
O
(kHz)
0
MAXIMUM Q
40
1067 G14
10
20
30
50
40
30
20
10
0
V
S
= 3.3V
f
CLK(MAX)
= 800kHz
V
S
= 5V
f
CLK(MAX)
= 1.5MHz
V
S
= ±5V
f
CLK(MAX)
= 2MHz
V
S
= 3V
f
CLK(MAX)
= 600kHz
LTC1067-50
Noise + THD vs Input Voltage
INPUT VOLTAGE (V
RMS
)
0.1
(NOISE + THD)/SIGNAL (dB)
1
1067 G15
4TH ORDER BUTTERWORTH LPF
V
S
= SINGLE 3V, f
IN
= 1kHz
f
CLK
= 200kHz, f
–3dB
= 4kHz
–20
–30
–40
–50
–60
–70
–80
–90
–100
2
MODE 1
MODE 3