Linear LT1222 Manual

Description
Demonstration circuit 1416 is a low noise transimpedance
amplifier. It utilizes the low voltage noise
and the low current noise
the discrete NXP JFET BF862, allowing the user to take
advantage of each component's particular optimization.
performance summary
SYMBOL PARAMETER
V Supply Voltage
S
A TIA Gain
Z
V Input Offset Voltage
OS
dV /dT Input Offset Voltage Drift
OS
I Input Bias Current
BIAS
en Input Voltage Noise Density
en Input Voltage Noise Density
C Input Capacitance
IN
GBW Gain Bandwidth Product
GBW Gain Bandwidth Product
GBW Gain Bandwidth Product
BW –3dB Bandwidth
V Output Voltage Swing
OUT
V Output Voltage Swing
OUT
V Output Voltage Swing
OUT
V Output Voltage Swing
OUT
I Supply Current
CC
I Input Bias Current
BIAS
PSRR Power Supply Rejection Ratio
LT 1222 op amp,
®
LT1793 op amp, along with
Specifications are at T
CONDITIONS
LT1793 (V
LT1793 (dV
LT1793 + BF862
f = 100kHz, JFET In Gain Configuration
f = 100kHz, Source Follower Configuration
f = 10kHz, Source Follower Configuration
JP In (C
JP Out (C
JP Out, C7 Removed (C
With SFH213, 1MΩ Gain, JP7 Out
Cathode Input, Integrator In
Cathode Input, Integrator Out
Anode Input, Integrator In
Anode Input, Integrator Out
V = ±12V
S
LT1793 + BF862
±5V to ±15V, Integrator In
DEMO MANUAL DC1416
LT1222 and LT1793
Transimpedance Amplifier
These components are arranged with jumpers allowing
various composite configurations. A socketed photodiode,
OSRAM SFH213, is also provided.
Design files for this circuit board are available at
http://www.linear.com/demo/DC1416
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
= 25°C, V = ±12V
A S
+ I • 10M)
OS BIAS
/dT +dI /dT • 10M)
OS BIAS
= 49pF)
COMP
= 10pF)
COMP
= 0pF)
COMP
Low Noise
TYP UNITS
±12 V
1M Ω
300 µV
10 µV/C
6 pA
1 nV/√Hz
3 nV/√Hz
2 pF
70 MHz
190 MHz
500 MHz
2 MHz
0 to 10 V
–0.4 to –10 V
0 to –10 V
–0.4 to –10 V
17 mA
6 pA
95 dB
dc1416f
1