ltc6910-2 Linear Technology Corporation, ltc6910-2 Datasheet - Page 13

• Manufacturer Part Number: ltc6910-2
• Description: Digitally Controlled Programmable Gain Amplifiers In Sot-23
• Manufacturer: Linear Technology Corporation

TYPICAL PERFOR A CE CHARACTERISTICS
–0.01
–0.02
–100
0.02
0.01
–30
–80
–90
–40
–50
–60
–70
–V
–V
–V
–V
0
+V
+V
+V
+V
–50
0
S
S
S
S
S
S
S
S
LTC6910-3 Distortion with Light
Loading (R
LTC6910-3 Gain Shift
vs Temperature
V
V
THD MEASURES HD2 AND HD3
V
OUTPUT UNLOADED
GAIN = 4
GAIN = 1
– 0.5
– 1.0
– 1.5
– 2.0
+ 2.0
+ 1.5
+ 1.0
+ 0.5
S
OUT
S
+V
–V
= 2.5V
= 2.5V
S
S
= 1V
0.01
LTC6910-3 Output Voltage Swing
vs Load Current
GAIN = 7
V
50
RMS
S
0
= 2.5V
TEMPERATURE ( C)
FREQUENCY (kHz)
L
(2.83V
125 C
25 C
–40 C
= 10k)
0.1
OUTPUT CURRENT (mA)
GAIN = 4
100
P-P
50
)
1
GAIN = 7
150
100
W
GAIN = 1
SOURCE
6910 G25
SINK
6910 G19
10
200
U
150
3
0.003
0.001
1
0.3
0.1
0.03
0.01
6910 G22
100
–10
–100
–5
20
15
10
–30
–40
–60
–80
–90
–50
–70
5
0
100
90
80
70
60
50
40
30
20
10
LTC6910-3 Frequency Response
0
GAIN OF 7
GAIN OF 5
GAIN OF 4
GAIN OF 3
GAIN OF 2
GAIN OF 1
V
V
0
LTC6910-3 Distortion with Heavy
Loading (R
V
V
THD MEASURES HD2 AND HD3
S
IN
0.1
S
OUT
LTC6910-3 Power Supply
Rejection vs Frequency
= 5V
= 10mV
= 2.5V
= 1V
1k
GAIN = 4
+SUPPLY
–SUPPLY
50
RMS
RMS
GAIN OF 6
FREQUENCY (Hz)
1
FREQUENCY (kHz)
L
(2.83V
10k
FREQUENCY (kHz)
= 500 )
100
P-P
GAIN = 1
100k
GAIN = 7
)
10
150
1M
100
V
GAIN = 1
(LTC6910-3)
S
6910 G26
6910 G20
= 2.5V
LTC6910-2/LTC6910-3
10M
6910 G23
200
1000
3
1
0.1
0.01
0.003
0.001
0.3
0.03
100
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
–100
–110
10
–20
–30
–40
–50
–60
–70
–80
–90
0
1
•
•
1
1
0.01
LTC6910-3 –3dB Bandwidth
vs Gain Setting
LTC6910-3 Noise Density
vs Frequency
INPUT-REFERRED
V
T
LTC6910-3 THD + Noise
vs Input Voltage
S
A
f
V
NOISE BW = 22kHz
IN
S
= 25 C
= 2.5V
= 1kHz
= 5V
GAIN SETTING = 4
INPUT VOLTAGE (V
•
•
2
FREQUENCY (kHz)
LTC6910-1
0.1
GAIN SETTING = 7
GAIN
•
•
3
10
•
•
4
GAIN SETTING = 1
V
•
•
GAIN = 1
GAIN = 4
GAIN = 7
IN
1
V
•
• •
5 6 7 8 9
V
P-P
S
S
= 10mV
= 2.7V
)
= 5V
• •
13
•
6910123fa
6910 G21
6910 G27
6910 G24
RMS
100
10
10