LTC6915
8
6915fb
Typical perForMance characTerisTics
Offset Voltage vs Temperature
VOS vs REF (Pin 13)
Gain Nonlinearity at Gain = 1
(Gain Nonlinearity Decreases for
Gain > 1)
Supply Current vs Supply Voltage
CMRR vs Frequency
Error Due to Input RS Mismatch
vs Input Common Mode
Error Due to Input RS Mismatch
vs Input Common Mode
Error Due to Input RS Mismatch
vs Input Common Mode
INPUT COMMON MODE VOLTAGE (V)
0
0.5
ADDITIONAL
OFFSET
(V)
1.0
2.0
1.5
2.5
3.0
6915 G10
80
60
40
20
0
–20
–40
–60
–80
VS = 3V
VREF = 0.2V
CIN < 100pF
AV = 16
TA = 25°C
+
–
R+
R–
CIN
R+ = 0k, R– = 20k
R+ = 20k, R– = 0k
R+ = 0k, R– = 15k
R+ = 15k, R– = 0k
INPUT COMMON MODE VOLTAGE (V)
0
ADDITIONAL
OFFSET
(V)
40
30
20
10
0
–10
–20
–30
–40
4.0
6915 G11
1.0
0.5
1.5
2.5
3.5
4.5
2.0
3.0
5.0
+
–
R+
R–
CIN
R+ = 20k, R– = 0k
VS = 5V
VREF = 0.2V
CIN < 100pF
AV = 16
TA = 25°C
R+ = 0k, R– = 20k
R+ = 15k, R– = 0k
R+ = 0k, R– = 15k
INPUT COMMON MODE VOLTAGE (V)
–5 –4
–2
0
2
4
ADDITIONAL
OFFSET
(V)
30
20
10
0
–10
–20
–30
–3
–1
1
3
6915 G12
5
+
–
R+
R–
CIN
R+ = 20k, R– = 0k
VS = ±5V
VREF = 0V
CIN < 100pF
AV = 16
TA = 25°C
R+ = 0k, R– = 20k
R+ = 0k, R– = 15k
R+ = 15k, R– = 0k
TEMPERATURE (°C)
–50
INPUT
OFFSET
VOLTAGE
(V)
15
10
5
0
–5
–10
0
50
75
6915 G13
–25
25
100 125
VS = ±5V
VS = 5V
VS = 3V
VREF (V)
0
V OS
(V)
4.0
6915 G14
1.0
2.0
3.0
2
–3
–8
–13
–18
0.5
1.5
2.5
3.5
VIN+ = VIN– = REF
AV = 16
TA = 25°C
VS = 3V
VS = 5V
VREF (V)
0
1
3
5
7
9
V OS
(V)
20
10
0
–10
–20
–30
–40
2
4
6
8
6915 G15
10
VIN+ = VIN– = REF
AV = 16
TA = 25°C
VS = 10V
OUTPUT VOLTAGE (V)
–2.4
GAIN
NONLINEARITY
(ppm)
5
4
3
2
1
0
–1
–2
–3
–4
–5
–1.2
0
0.6
6915 G16
–1.8
–0.6
1.2 1.8 2.4
VS = ±2.5V
VCM = VREF = 0V
RL = 10k
AV = 1
TA = 25°C
SUPPLY VOLTAGE (V)
2.5
SUPPLY
CURRENT
(mA)
8.5
1.15
1.10
1.05
1.00
0.95
0.90
0.85
0.80
0.75
0.70
6915 G17
3.5
11.5
4.5 5.5 6.5 7.5
9.5 10.5
TA = –50°C
TA = 125°C
TA = 85°C
TA = 0°C
FREQUENCY (Hz)
1
CMRR
(db)
130
120
110
100
90
80
70
10
100
1000
6915 G18
VS = 3V, 5V, ±5V
VIN = 1VP-P
R+ = R– = 1k
R+ = R– = 10k
R+ = 10k, R– = 0k
+
–
R+
R–
R+ = 0k, R– = 10k