Datasheet

LTC6910-1
LTC6910-2/LTC6910-3
13
6910123fa
TYPICAL PERFOR A CE CHARACTERISTICS
UW
LTC6910-3 Output Voltage Swing
vs Load Current
TEMPERATURE (°C)
–0.02
GAIN CHANGE (dB)
–0.01
0
0.01
0.02
6910 G19
–50 0 50 150100
GAIN = 7
GAIN = 4
GAIN = 1
V
S
= ±2.5V
OUTPUT UNLOADED
FREQUENCY (Hz)
0
GAIN (dB)
10
20
–5
5
15
1k100 100k 1M 10M
6910 G20
–10
10k
GAIN OF 7 GAIN OF 6
GAIN OF 5
GAIN OF 4
GAIN OF 3
GAIN OF 2
GAIN OF 1
V
S
= ±5V
V
IN
= 10mV
RMS
GAIN
0
–3dB FREQUENCY (MHz)
2.0
4.0
8.0
7.0
5.0
3.0
1.0
6910 G21
6.0
V
IN
= 10mV
RMS
V
S
= 2.7V
V
S
= ±5V
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
13 10
245
6
78
9
LTC6910-3 Frequency Response
LTC6910-3 –3dB Bandwidth
vs Gain Setting
LTC6910-3 Power Supply
Rejection vs Frequency
LTC6910-3 Noise Density
vs Frequency
OUTPUT CURRENT (mA)
OUTPUT VOTLAGE SWING (V)
(REFERRED TO SUPPLY VOLTAGE)
+V
S
–V
S
0.01 1 10 100
6910 G22
0.1
+V
S
– 0.5
–V
S
+ 0.5
+V
S
– 1.0
–V
S
+ 1.0
+V
S
– 1.5
–V
S
+ 1.5
+V
S
– 2.0
–V
S
+ 2.0
V
S
= ±2.5V
125°C
25°C
–40°C
SOURCE
SINK
FREQUENCY (kHz)
20
REJECTION (dB)
80
90
10
0
70
40
60
50
30
0.1 10 100 1000
6910 G23
1
+SUPPLY
–SUPPLY
V
S
= ±2.5V
GAIN = 1
FREQUENCY (kHz)
1
10
100
6910 G24
1
10
100
GAIN = 1
GAIN = 4
GAIN = 7
INPUT-REFERRED
V
S
= ±2.5V
T
A
= 25°C
VOLTAGE NOISE DENSITY (nV/√Hz)
LTC6910-3 Distortion with Light
Loading (R
L
= 10k)
LTC6910-3 THD + Noise
vs Input Voltage
FREQUENCY (kHz)
0
–60
–50
–30
150
6910 G25
–70
–80
50 100 200
–90
–100
–40
0.1
0.3
3
0.03
0.01
0.003
0.001
1
THD (AMPLITUDE BELOW FUNDAMENTAL) (dB)
THD (%)
V
S
= ±2.5V
V
OUT
= 1V
RMS
(2.83V
P-P
)
THD MEASURES HD2 AND HD3
GAIN = 7
GAIN = 1
GAIN = 4
FREQUENCY (kHz)
0
–60
–50
–30
150
6910 G26
–70
–80
50 100
GAIN = 7
GAIN = 1
200
–90
–100
–40
0.1
0.3
3
0.03
0.01
0.003
0.001
1
THD (AMPLITUDE BELOW FUNDAMENTAL) (dB)
THD (%)
V
S
= ±2.5V
V
OUT
= 1V
RMS
(2.83V
P-P
)
THD MEASURES HD2 AND HD3
GAIN = 4
INPUT VOLTAGE (V
P-P
)
0.01
–60
(THD + NOISE)/SIGNAL (dB)
–50
–40
–30
–20
0.1 1 10
6910 G27
–70
–80
–100
–110
–90
f
IN
= 1kHz
V
S
= ±5V
NOISE BW = 22kHz
GAIN SETTING = 7
GAIN SETTING = 4
GAIN SETTING = 1
LTC6910-3 Distortion with Heavy
Loading (R
L
= 500Ω)
LTC6910-3 Gain Shift
vs Temperature
(LTC6910-3)