LT1797 Linear Technology, LT1797 Datasheet - Page 10

• Manufacturer Part Number: LT1797
• Description: 10MHz/ Rail-to-Rail Input and Output Op Amp in SOT-23
• Manufacturer: Linear Technology

LT1797
10
TYPICAL APPLICATIO S
3V
R2
1k
R3
10k
PHOTODIODE
SFH213FA
IN
C1
0.1 F
R4
10
+
–
LT1028
R1
100k
–5V
5V
Ultra-Low Noise, 5V Supply, Rail-to-Rail Output Amplifier
U
C
P
*
Single Supply Hi-Gain 80kHz Photodiode Amplifier
R4
1k
R5
1k
C2
0.1 F
+
–
C1
2200pF
LT1797
100k
3V
4.99k
R5
R2
+
–
330
LT1797
R6
4.99k
–5V
5V
10k
R1
R3
C3
1000pF
1797 TA02
*C
P
= SUM OF PHOTODIODE CAPACITANCE, PARASITIC LAYOUT
OUT
CAPACITANCE AND LT1797 INPUT CAPACITANCE 10pF.
TRANSIMPEDANCE GAIN: A
R6, C3 LIMIT THE NOISE BANDWIDTH TO 500kHz.
OUTPUT NOISE 1.8mV
R1, C
R4, C2 SET LOWER 1.6kHz LIMIT ON GAIN OF 101.
TOTAL INPUT VOLTAGE NOISE 0.94nV/ Hz
(INCLUDING 10 RESISTOR)
BANDWIDTH 40kHz
A
V
P
= 500
AND LT1797 GBW SET UPPER LIMIT ON BANDWIDTH.
RMS
Z
.
= 10M .
1797 TA03