adl5304 Analog Devices, Inc., adl5304 Datasheet - Page 7
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adl5304
Manufacturer Part Number
adl5304
Description
High Speed, 200 Db Range, Logarithmic Converter
Manufacturer
Analog Devices, Inc.
Datasheet
1.ADL5304.pdf
(32 pages)
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Data Sheet
TYPICAL PERFORMANCE CHARACTERISTICS
V
SCL3 = open; scale = 200 mV/dec; VLOG output load R
POS
= 5 V, V
3.0
2.5
2.0
1.5
1.0
0.5
3.0
2.5
2.0
1.5
1.0
0.5
Figure 4. V
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
0
0
1p
1p
1p
Figure 3. V
10p 100p
10p 100p
10p 100p
Figure 5. V
NEG
100pA
1nA
10nA
100nA
1µA
10µA
100µA
1mA
+85°C
+70°C
+25°C
0°C
–40°C
LOG
= 0 V, T
(Decade Steps from 100 pA to 1 mA)
vs. I
LOG
DEN
LOG
1n
1n
1n
vs. I
for Multiple Temperatures; I
vs. I
A
= 25°C; IDEN = IREF; VSM1 to VSM4, 1P5V, DCBI, and INPS tied together; SCL1 = VLOG; SCL2 = INMS;
I
I
I
NUM
NUM
DEN
NUM
10n 100n
10n 100n
10n 100n
NUM
CURRENT (A)
CURRENT (A)
for Multiple Temperatures
CURRENT (A)
for Multiple Values of I
1μ
1μ
1μ
10μ 100μ
10μ 100μ
10μ 100μ
NUM
DEN
+85°C
+70°C
+25°C
0°C
–40°C
= 100 nA
1m
1m
1m
10m
10m
10m
L
> 2 kΩ, unless otherwise noted.
Rev. 0 | Page 7 of 32
Figure 6. Law Conformance Error vs. I
Figure 7. Law Conformance Error vs. I
Figure 8. Law Conformance Error vs. I
–1
–2
–3
–1
–2
–3
–1
–2
–3
3
2
1
0
3
2
1
0
3
2
1
0
1p
1p
1p
10p 100p
10p 100p
10p 100p
(Decade Steps from 100 pA to 1 mA)
I
NUM
= 100 nA; Normalized to 25°C
1n
1n
1n
Normalized to 25°C
I
I
I
NUM
DEN
NUM
10n 100n
10n 100n
10n 100n
CURRENT (A)
CURRENT (A)
CURRENT (A)
NUM
DEN
NUM
1μ
1μ
1μ
for Multiple Temperatures;
for Multiple Temperatures;
for Multiple Values of I
10μ 100μ
10μ 100μ
10μ 100μ
+85°C
+70°C
+25°C
0°C
–40°C
+85°C
+70°C
+25°C
0°C
–40°C
ADL5304
1mA
100µA
10µA
1µA
100nA
10nA
1nA
100pA
1m
1m
1m
10m
10m
10m
DEN