Datasheet

LT1057/LT1058
13
10578fd
TYPICAL APPLICATIONS
Instrumentation Amplifier with Shield Driver
100dB Range Logarithmic Photodiode Amplifier
–
+
–
+
–
+
–
+
+
–
10578 TA09
1/4
LT1058
1/4
LT1058
1/4
LT1058
1/4
LT1058
R
F
9.1k
R
G
1k
15V
–15V
11
OUTPUT
GAIN = 10(1+R
F
/R
G
) ≈ 100
I
B
= 5pA
R
IN
= 10
12
Ω
BW = 350kHz
7
10
9
4
5
6
3
1
8
GUARD
INPUT
GUARD
2
13
12
14
R
G
1k
R
F
9.1k
1k
1k
10k
10k
+
–
+
–
10578 TA10
1/2
LT1057
1/2
LT1057
–
+
LM301A
50k*
10k*
OUT
IN
15V
2k
15
13
14
33Ω
7
8
9
15V
LIGHT (900µM)
1MW
100µW
10µW
1µW
100nW
10nW
CIRCUIT OUTPUT
10.0V
7.85V
5.70V
3.55V
1.40V
–0.75V
RESPONSE DATA
DIODE CURRENT
350µA
35µA
3.5µA
350nA
35nA
3.5nA
2k
I
P
750k*
E
OUT
1M
1M
FULL-SCALE
TRIM
50k
DARK
TRIM
10k*
LT1021-10V
3k
Q5
10
12
11
6 Q4
500pF
4
5
0.01µF
0.033µF
Q2
32
1
Q3
Q1
= HP-5082-4204 PIN PHOTODIODE.
Q1–Q5 = CA3096.
CONNECT SUBSTRATE OF CA3096
ARRAY TO Q4’s EMITTER.
*1% RESISTOR
100dB RANGE LOGARITHMIC PHOTODIODE AMPLIFIER