Datasheet
LTC6915
8
6915fb
Typical perForMance characTerisTics
Offset Voltage vs Temperature V
OS
vs REF (Pin 13) V
OS
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 R
S
Mismatch
vs Input Common Mode
Error Due to Input R
S
Mismatch
vs Input Common Mode
Error Due to Input R
S
Mismatch
vs Input Common Mode
INPUT COMMON MODE VOLTAGE (V)
0 0.5
ADDITIONAL OFFSET (µV)
1.0 2.01.5
2.5
3.0
6915 G10
80
60
40
20
0
–20
–40
–60
–80
V
S
= 3V
V
REF
= 0.2V
C
IN
< 100pF
A
V
= 16
T
A
= 25°C
+
–
R
+
R
–
C
IN
R
+
= 0k, R
–
= 20k
R
+
= 20k, R
–
= 0k
R
+
= 0k, R
–
= 15k
R
+
= 15k, R
–
= 0k
INPUT COMMON MODE VOLTAGE (V)
0
ADDITIONAL OFFSET (µV)
40
30
20
10
0
–10
–20
–30
–40
4.0
6915 G11
1.00.5 1.5 2.5 3.5 4.5
2.0
3.0
5.0
+
–
R
+
R
–
C
IN
R
+
= 20k, R
–
= 0k
V
S
= 5V
V
REF
= 0.2V
C
IN
< 100pF
A
V
= 16
T
A
= 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 (µV)
30
20
10
0
–10
–20
–30
–3 –1 1 3
6915 G12
5
+
–
R
+
R
–
C
IN
R
+
= 20k, R
–
= 0k
V
S
= ±5V
V
REF
= 0V
C
IN
< 100pF
A
V
= 16
T
A
= 25°C
R
+
= 0k, R
–
= 20k
R
+
= 0k, R
–
= 15k
R
+
= 15k, R
–
= 0k
TEMPERATURE (°C)
–50
INPUT OFFSET VOLTAGE (µV)
15
10
5
0
–5
–10
0
50
75
6915 G13
–25
25
100
125
V
S
= ±5V
V
S
= 5V
V
S
= 3V
V
REF
(V)
0
V
OS
(µV)
4.0
6915 G14
1.0
2.0
3.0
2
–3
–8
–13
–18
0.5 1.5 2.5
3.5
V
IN
+
= V
IN
–
= REF
A
V
= 16
T
A
= 25°C
V
S
= 3V
V
S
= 5V
V
REF
(V)
0 1 3 5 7 9
V
OS
(µV)
20
10
0
–10
–20
–30
–40
2 4 6 8
6915 G15
10
V
IN
+
= V
IN
–
= REF
A
V
= 16
T
A
= 25°C
V
S
= 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
V
S
= ±2.5V
V
CM
= V
REF
= 0V
R
L
= 10k
A
V
= 1
T
A
= 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
T
A
= –50°C
T
A
= 125°C
T
A
= 85°C
T
A
= 0°C
FREQUENCY (Hz)
1
CMRR (db)
130
120
110
100
90
80
70
10 100 1000
6915 G18
V
S
= 3V, 5V, ±5V
V
IN
= 1V
P-P
R
+
= R
–
= 1k
R
+
= R
–
= 10k
R
+
= 10k, R
–
= 0k
+
–
R
+
R
–
R
+
= 0k, R
–
= 10k