Datasheet

"#$$%
SBOS301A − MAY 2004 − REVISED MARCH 2007
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9
TYPICAL CHARACTERISTICS: V
S
= +5V (continued)
All specifications at T
A
= +25°C, R
VLOGOUT
= 10kΩ, V
CM
= GND, unless otherwise noted. For ac measurements, small signal means up to approximately 10% of dc
level.
0.45
0.40
0.35
0.30
0.25
0.20
1nA 10nA 100nA 1
µ
A10
µ
A100
µ
A 1mA 10mA100pA
6 DECADE LOG CONFORMITY vs I
REF
I
REF
(I
1
)
Linearity (%)
−
10
_
C, 0
_
C, +25
_
C
+70
_
C
+80
_
C
+90
_
C
1.6
1.5
1.4
1.3
1.2
1.1
1.0
0.9
1nA 10nA 100nA 1
µ
A10
µ
A100
µ
A 1mA 10mA100pA
8 DECADE LOG CONFORMITY (100pA to 3.5mA)
Input Current (I
1
or I
2
)
Linearity (%)
0
_
C
+70
_
C
+80
_
C
+25
_
C
−
10
_
C
+90
_
C
20
10
0
−
10
−
20
−
30
−
40
100 1k 10k 100k 1M 10M 100M10
SMALL−SIGNAL V
LOGOUT
Frequency (Hz)
Normalized V
LOGOUT
(%)
10mA
1
µ
A
10nA
100nA
10
µ
A
100
µ
A
1mA
0
−
5
−
10
−
15
−
20
−
25
−
30
−
35
−
40
−
45
−
50
1k 10k 100k 1M 10M 100M100
SMALL−SIGNALAC RESPONSE I
1
(10% sine modulation)
Frequency (Hz)
Normalized LOG Output (dB)
1
µ
A
10nA
100nA
1nA 1mA
100
µ
A
10
µ
A
0
−
5
−
10
−
15
−
20
−
25
−
30
−
35
−
40
−
45
−
50
1k 10k 100k 1M 10M 100M100
SMALL−SIGNALAC RESPONSE I
2
(10% sine modulation)
Frequency (Hz)
Normalized LOG Output (dB)
1
µ
A
10nA
100nA
1nA
1mA
100
µ
A
10
µ
A
160
140
120
100
80
60
40
20
0
−
20
−
40
40M100 1k 10k 100k
A
3
GAIN AND PHASE vs FREQUENCY
Frequency (Hz)
Gain (dB)
225
180
135
90
45
0
Phase (
_
)
1M 10M
Gain
Phase