Datasheet

V
LOGV2
VOLTAGE-NOISE DENSITY
vs. FREQUENCY
MAX4207 toc15
FREQUENCY (Hz)
1M100k10k1k10010
0.1
1
10
0.01
1 10M
NOISE DENSITY (µV/√Hz)
I
REF
= I
LOG
100nA
10nA
1
µ
A
10
µ
A
TOTAL WIDEBAND VOLTAGE NOISE
AT V
LOGV2
vs. I
LOG
VMAX4207 toc16
I
LOG
(A)
VOLTAGE NOISE (mV
RMS
)
100
µ
10
µ
1
µ
100n
1
2
3
4
5
0
10n 1m
f = 1Hz TO 1MHz
I
REF
= I
LOG
LOGARITHMIC SLOPE DISTRIBUTION
MAX4207 toc17
SLOPE (mV/DECADE)
COUNT (%)
255250245
5
10
15
20
25
30
35
0
240 260
V
REFVOUT
DISTRIBUTION
MAX4207 toc18
V
REFVOUT
(V)
COUNT (%)
1.2421.2401.2381.2361.234
5
10
15
20
25
30
0
1.232 1.246
R
L
= 100kΩ
INPUT OFFSET VOLTAGE DISTRIBUTION
MAX4207 toc19
INPUT OFFSET VOLTAGE (mV)
COUNT (%)
2.52.01.51.00.50-0.5
5
10
15
20
25
0
-1.0 3.0
INPUT OFFSET VOLTAGE = V
LOGIIN
- V
CMVIN
REFERENCE OUTPUT VOLTAGE (V
REFVOUT
)
vs. TEMPERATURE
MAX4207 toc21
TEMPERATURE (°C)
REFERENCE OUTPUT VOLTAGE (V)
7550250-25
1.21
1.22
1.23
1.24
1.25
1.26
1.27
1.28
1.29
1.30
1.20
-50 100
MAX4207
Precision Transimpedance Logarithmic
Amplifier with Over 5 Decades of Dynamic Range
6 _______________________________________________________________________________________
Typical Operating Characteristics (continued)
(V
CC
= +5V, V
EE
= -5V, GND = 0V, I
REF
= 1µA, I
LOG
= 10µA, LOGV2 = SCALE, LOGV1 = OSADJ, CMVIN = CMVOUT, R
SET
> 1MΩ,
T
A
= +25°C, unless otherwise noted.)
REFERENCE OUTPUT VOLTAGE (V
REFVOUT
)
vs. LOAD CURRENT
MAX4207 toc22
LOAD CURRENT (mA)
REFERENCE OUTPUT VOLTAGE (V)
0.50-0.5
1.21
1.22
1.23
1.24
1.25
1.26
1.27
1.28
1.29
1.30
1.20
-1.0 1.0
OFFSET VOLTAGE
vs. TEMPERATURE
MAX4207 toc20
TEMPERATURE (
°
C)
V
LOGV1
(mV)
7550250-25
-16
-12
-8
-4
0
4
8
12
16
20
-20
-50 100
I
REF
= 1
µ
A
I
LOG
= 1
µ
A