![](http://datasheet.mmic.net.cn/Linear-Technology/LTC1067CGN-TRPBF_datasheet_97959/LTC1067CGN-TRPBF_6.png)
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 (VRMS)
0.1
(NOISE
+
THD)/SIGNAL
(dB)
1
1067 G16
4TH ORDER BUTTERWORTH LPF
VS = SINGLE 5V, fIN = 1kHz
fCLK = 250kHz, f–3dB = 5kHz
RL = 20k
–20
–30
–40
–50
–60
–70
–80
–90
–100
2
MODE 1
MODE 3
INPUT VOLTAGE (VRMS)
0.1
1
5
1067 G17
(NOISE
+
THD)/SIGNAL
(dB)
–20
–30
–40
–50
–60
–70
–80
–90
–100
4TH ORDER BUTTERWORTH LPF
VS = ±5V, fIN = 1kHz
fCLK = 250kHz (225kHz FOR MODE 2)
f–3dB = 10kHz, RL = 20k
MODE 1
MODE 2
MODE 3
INPUT FREQUENCY (kHz)
13
4
5
(NOISE
+
THD)/SIGNAL
(dB)
–60
–65
–70
–75
–80
–85
–90
2
1067 G18
4TH ORDER BUTTERWORTH LPF
VS = SINGLE 3V, fCLK = 200kHz
VIN = 0.34VRMS, f–3dB = 4kHz, RL = 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)
13
4
5
(NOISE
+
THD)/SIGNAL
(dB)
–60
–65
–70
–75
–80
–85
–90
2
1067 G19
4TH ORDER BUTTERWORTH LPF
VS = SINGLE 5V, fCLK = 250kHz
VIN = 0.5VRMS, f–3dB = 5kHz, RL = 20k
MODE 1
MODE 3
INPUT FREQUENCY (kHz)
13
4
5
(NOISE
+
THD)/SIGNAL
(dB)
–60
–65
–70
–75
–80
–85
–90
2
1067 G20
4TH ORDER BUTTERWORTH LPF
VS = ±5V, fCLK = 250kHz
VIN = 1VRMS, f–3dB = 5kHz
RL = 20k
MODE 1
MODE 3
Q
NOISE
(
V
RMS
)
400
350
300
250
200
150
100
50
0
1067 G21
25
0
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 (k
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
10
0
2
4
6
8
12 14 16 18 20
VS = ±5V
LTC1067-50
Output Voltage Swing vs Load
Resistance, Single Supply Voltage
LOAD RESISTANCE (k
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
10
0
2
4
6
8
12 14 16 18 20
VS = 5V
VS = 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
79
10
POWER
SUPPLY
CURRENT
(mA)
70
°C
20
°C
25
°C
LTC1067-50
Power Supply Current
vs Power Supply