AD605
2.0
1.5
1.0
GAIN ERROR
60
VGN = 2.9V (FBK = OPEN)
40
VGN = 2.9V (FBK = SHORT)
VGN = 1.5V (FBK = OPEN)
0.5
0
–0.5
–1.0
30dB/V
V
REF
= 1.67V
GAIN (dB)
20dB/V
V
REF
= 2.50V
20
VGN = 1.5V (FBK = SHORT)
VGN = 0.1V (FBK = OPEN)
VGN = 0.1V (FBK = SHORT)
0
–20
00541-009
–2.0
0.2
0.7
1.2
VGN (V)
1.7
2.2
2.7
–60
100k
1M
10M
FREQUENCY (Hz)
100M
Figure 9. Gain Error vs. VGN for Two Gain Scale Values
20
18
16
14
Figure 12. AC Response for Three Values of VGN
2.525
N = 50
∆G(dB)
= G(CH1) – G(CH2)
2.520
2.515
2.510
V
OS
(V)
V
OCM
= 2.50V
–40°C
+25°C
PERCENTAGE
12
10
8
6
4
2
0
–0.8
–0.6
–0.4
–0.2
0
0.2
DELTA GAIN (dB)
0.4
0.6
0.8
00541-010
2.505
2.500
2.495
2.490
2.485
2.480
2.475
0
0.5
1.0
1.5
VGN (V)
2.0
2.5
00541-014
+85°C
3.0
Figure 10. Gain Match, VGN1 = VGN2 = 1.0 V
20
18
16
14
NOISE (nV/ Hz)
PERCENTAGE
N = 50
∆G(dB)
= G(CH1) – G(CH2)
Figure 13. Output Offset vs. VGN at Three Temperatures
130
125
120
+25°C
115
110
105
100
00541-011
00541-015
+85°C
12
10
8
6
4
2
0
–0.8
–0.6
–0.4
–0.2
0
0.2
DELTA GAIN (dB)
0.4
0.6
0.8
–40°C
95
90
0
0.5
1.0
1.5
VGN (V)
2.0
2.5
3.0
Figure 11. Gain Match, VGN1 = VGN2 = 2.50 V
Figure 14. Output Referred Noise vs. VGN at Three Temperatures
Rev. D | Page 8 of 20
00541-013
–1.5
–40
VGN = 0.0V
AD [ ANALOG DEVICES ]
