AD8304 Analog Devices, AD8304 Datasheet - Page 18

• Manufacturer Part Number: AD8304
• Description: 160 DB Logarithmic Amplifier With Photo-diode Interface
• Manufacturer: Analog Devices

AD8304
Evaluation Board
An evaluation board is available for the AD8304, the schematic
for which is shown in Figure 21, and the two board sides are shown
in Figure 22 and Figure 23. It can be configured for a wide variety
of experiments. The board is factory set for photoconductive mode
INSTALLED
INPUT
LK1
BIASER
LK2 OPEN
750
C11
1nF
SW1
R15
10k
0.1 F
R10
C10
+V
S
10nF
0.1nF
C9
OPEN
OPEN
OPEN
C1
R7
R7
R9
GND
1nF
R6
OPEN
R5
OPEN
C2
–V
S
1
2
3
4
5
6
7
VNEG
PWDN
VSUM
INPT
VSUM
VPDB
VREF
OPEN
OPEN
AD8304
R4
R3
ACOM
BFNG
VLOG
VOUT
with a buffer gain of unity, providing a slope of 10 mV/dB and an
intercept of 100 pA. By substituting resistor and capacitor values,
all of the application circuits presented in this data sheet can be
evaluated. Table V describes the various configuration options.
VPS1
VPS2
BFIN
14
13
12
11
10
9
8
R2
0
C6
OPEN
1nF
R11
OPEN
0
C3
R1
R14
0
C7
OPEN
0.1 F
C4
R12
OPEN
C5
OPEN
R13
0
C8
OPEN
BUFFER
OUT
LOG
OUT