AD8278 Datasheet, PDF (10/24 Pages) Analog Devices – Low Power, Wide Supply Range, Low Cost Difference Amplifier, G = ½, 2

AD8278
10
V_REF = MIDSUPPLY
8
V_S = 5V
6
4
2
0
V_S = 2.7V
–2
–4
–6
–8
–10
–0.5
0.5
1.5
2.5
3.5
4.5
5.5
OUTPUT VOLTAGE (V)
Figure 11. Input Common-Mode Voltage vs. Output Voltage,
5 V and 2.7 V Supplies, VREF = Midsupply, G = ½
12
V_REF = 0V
10
V_S = 5V
8
6
4
2
0
V_S = 2.7V
–2
–4
–6
–0.5
0.5
1.5
2.5
3.5
4.5
5.5
OUTPUT VOLTAGE (V)
Figure 12. Input Common-Mode Voltage vs. Output Voltage,
5 V and 2.7 V Supplies, VREF = 0 V, G = ½
30
V_S = ±15V
20
10
0
V_S = ±5V
–10
–20
–30
–20 –15 –10 –5
0
5
10
15
20
OUTPUT VOLTAGE (V)
Figure 13. Input Common-Mode Voltage vs. Output Voltage,
±15 V and ±5 V Supplies, G = 2
5
V_S = 5V
V_REF = MIDSUPPLY
4
3
2
1
0
V_S = 2.7V
–1
–2
–3
–0.5
0.5
1.5
2.5
3.5
4.5
5.5
OUTPUT VOLTAGE (V)
Figure 14. Input Common-Mode Voltage vs. Output Voltage,
5 V and 2.7 V Supplies, VREF = Midsupply, G = 2
6
V_REF = 0V
5
V_S = 5V
4
3
2
1
V_S = 2.7V
0
–1
–2
–0.5
0.5
1.5
2.5
3.5
4.5
5.5
OUTPUT VOLTAGE (V)
Figure 15. Input Common-Mode Voltage vs. Output Voltage,
5 V and 2.7 V Supplies, VREF = 0 V, G = 2
18
12
GAIN = 2
6
0
GAIN = ½
–6
–12
–18
–24
–30
–36
100
1k
10k
100k
1M
10M
FREQUENCY (Hz)
Figure 16. Gain vs. Frequency, ±15 V Supplies
Rev. 0 | Page 10 of 24