Datasheet
6
LTC1067/LTC1067-50
TYPICAL PERFORMANCE CHARACTERISTICS
U
W
LTC1067-50
Noise + THD vs Input Voltage
LTC1067-50
Noise + THD vs Input Frequency
LTC1067-50
Noise + THD vs Input Voltage
INPUT VOLTAGE (V
RMS
)
0.1
(NOISE + THD)/SIGNAL (dB)
1
1067 G16
4TH ORDER BUTTERWORTH LPF
V
S
= SINGLE 5V, f
IN
= 1kHz
f
CLK
= 250kHz, f
–3dB
= 5kHz
R
L
= 20k
–20
–30
–40
–50
–60
–70
–80
–90
–100
2
MODE 1
MODE 3
INPUT VOLTAGE (V
RMS
)
0.1 1 5
1067 G17
(NOISE + THD)/SIGNAL (dB)
–20
–30
–40
–50
–60
–70
–80
–90
–100
4TH ORDER BUTTERWORTH LPF
V
S
= ±5V, f
IN
= 1kHz
f
CLK
= 250kHz (225kHz FOR MODE 2)
f
–3dB
= 10kHz, R
L
= 20k
MODE 1
MODE 2
MODE 3
INPUT FREQUENCY (kHz)
1345
(NOISE + THD)/SIGNAL (dB)
–60
–65
–70
–75
–80
–85
–90
2
1067 G18
4TH ORDER BUTTERWORTH LPF
V
S
= SINGLE 3V, f
CLK
= 200kHz
V
IN
= 0.34V
RMS,
f
–3dB
= 4kHz, R
L
= 20k
MODE 1
MODE 3
LTC1067-50
Noise + THD vs Input Frequency
LTC1067-50
Noise vs Q
LTC1067-50
Noise + THD vs Input Frequency
INPUT FREQUENCY (kHz)
1345
(NOISE + THD)/SIGNAL (dB)
–60
–65
–70
–75
–80
–85
–90
2
1067 G19
4TH ORDER BUTTERWORTH LPF
V
S
= SINGLE 5V, f
CLK
= 250kHz
V
IN
= 0.5V
RMS,
f
–3dB
= 5kHz, R
L
= 20k
MODE 1
MODE 3
INPUT FREQUENCY (kHz)
1345
(NOISE + THD)/SIGNAL (dB)
–60
–65
–70
–75
–80
–85
–90
2
1067 G20
4TH ORDER BUTTERWORTH LPF
V
S
= ±5V, f
CLK
= 250kHz
V
IN
= 1V
RMS
,
f
–3dB
= 5kHz
R
L
= 20k
MODE 1
MODE 3
Q
NOISE (µV
RMS
)
400
350
300
250
200
150
100
50
0
1067 G21
250 5 10 15 20 30 35 40 45 50
±5V
5V
3V
LTC1067-50
Output Voltage Swing vs Load
Resistance, ±5V 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 G22
100 2 4 6 8 12 14 16 18 20
V
S
= ±5V
LTC1067-50
Output Voltage Swing vs Load
Resistance, Single Supply Voltage
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 G23
100 2 4 6 8 12 14 16 18 20
V
S
= 5V
V
S
= 3V
TOTAL POWER SUPPLY (V)
3
2.2
2.0
1.8
1.6
1.4
1.2
1.0
0.8
68
1067 G24
45
7910
POWER SUPPLY CURRENT (mA)
70°C
20°C
25°C
LTC1067-50
Power Supply Current
vs Power Supply