Datasheet

AD8305
Rev. B | Page 6 of 24
TYPICAL PERFORMANCE CHARACTERISTICS
V
P
= 5 V, V
N
= 0 V, R
REF
= 200 kΩ, T
A
= 25°C, unless otherwise noted.
I
PD
(A)
1.4
0
1n
V
LOG
(V)
1.2
1.0
0.8
0.6
0.4
0.2
10n 10µ 100µ1m10m
1.6
T
A
= –40°C, 0°C, +25°C, +70°C, +85°C
V
N
= 0V
–40°C
+25°C
+85°C
0°C
+70°C
100n 1µ
03053-003
Figure 3. V
LOG
vs. I
PD
for Multiple Temperatures
1.4
0
V
LOG
( V)
1.2
1.0
0.8
0.6
0.4
0.2
1.6
–40°C
1.8
T
A
= –40°C, 0°C, +25°C, +70°C, +85°C
V
N
= 0V
+25°C
+85°C
0°C
+70°C
I
REF
(A)
1n
10n 10µ 100µ 1m 10m100n 1µ
03053-004
Figure 4. V
LOG
vs. I
REF
for Multiple Temperatures
1.4
0
V
LOG
(V)
1.2
1.0
0.8
0.6
0.4
0.2
1.6
1.8
10nA
100nA
1µA
10µA
100µA
1mA
I
PD
(A)
1n 10n 10µ 100µ 1m 10m100n 1µ
0
3053-005
Figure 5. V
LOG
vs. I
PD
for Multiple Values of I
REF
(Decade Steps from 10 nA to 1 mA)
I
PD
(A)
1.5
–2.0
ER
R
OR; dB (10mV/dB)
1.0
0.5
0
–0.5
–1.0
–1.5
–40°C
2.0
0°C
+70°C
+25°C
T
A
= –40°C, 0°C, +25°C, +70°C, +85°C
V
N
= 0V
1n 10n 10µ 100µ1m 10m100n 1µ
+85°C
03053-006
Figure 6. Law Conformance Error vs. I
PD
(at I
REF
= 10 μA) for Multiple
Temperatures, Normalized to 25°C
1.5
–2.0
ERROR; dB (10mV/dB)
1.0
0.5
0
–0.5
–1.0
–1.5
–40°C
2.0
0°C
+70°C
+85°C
+25°C
T
A
= –40°C, 0°C, +25°C, +70°C, +85°C
V
N
= 0V
I
PD
(A)
1n 10n 10µ 100µ1m 10m100n 1µ
03053-007
Figure 7. Law Conformance Error vs. I
REF
(at I
PD
= 10 μA) for Multiple
Temperatures, Normalized to 25°C
0.4
–0.3
E
R
R
OR; dB (10mV/dB)
0.3
0.2
0.1
0
–0.1
–0.2
0.5
–0.4
–0.5
1µA
10µA
100µA 1mA
10nA
100nA
I
PD
(A)
1n 10n 10µ 100µ 1m 10m100n 1µ
03053-008
Figure 8. Law Conformance Error vs. I
PD
for Multiple Values of I
REF
(Decade Steps
from 10 nA to 1 mA)