LT1228IN8(Rev_C) 查看數據表（PDF） - Linear Technology
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LT1228IN8 Datasheet PDF : 20 Pages
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LT1228
ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. Transconductance Amplifier, Pins 1, 2, 3, 5. ±5V ≤ VS ≤ ±15V, ISET =
100µA, VCM = 0V unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX UNITS
IB
Input Bias Current
TA = 25°C
0.4
1
µA
●
5
µA
en
Input Noise Voltage Density
RIN
Input Resistance-Differential Mode
Input Resistance-Common Mode
CIN
Input Capacitance
Input Voltage Range
CMRR
Common Mode Rejection Ratio
PSRR
gm
Power Supply Rejection Ratio
Transconductance
Transconductance Drift
f = 1kHz
VIN ≈ ±30mV
VS = ±15V, VCM = ±12V
VS = ±5V, VCM = ± 2V
VS = ±15V, TA = 25°C
VS = ±15V
VS = ±5V, TA = 25°C
VS = ±5V
VS = ±15V, VCM = ±13V, TA = 25°C
VS = ±15V, VCM = ±12V
VS = ±5V, VCM = ±3V, TA = 25°C
VS = ±5V, VCM = ±2V
VS = ±2V to ±15V, TA = 25°C
VS = ±3V to ±15V
ISET = 100µA, IOUT = ±30µA, TA = 25°C
20
nV/√Hz
● 30 200
kΩ
● 50 1000
MΩ
● 50 1000
MΩ
3
pF
±13 ±14
V
● ±12
V
±3 ±4
V
● ±2
V
60 100
dB
● 60
dB
60 100
dB
● 60
dB
60 100
dB
● 60
dB
0.75 1.00 1.25 µA/mV
●
– 0.33
%/°C
IOUT
Maximum Output Current
IOL
Output Leakage Current
ISET = 100µA
ISET = 0µA (+IIN of CFA), TA = 25°C
● 70 100 130
µA
0.3 3
µA
●
10
µA
VOUT
Maximum Output Voltage Swing
RO
Output Resistance
Output Capacitance (Note 3)
IS
Supply Current, Both Amps
THD
Total Harmonic Distortion
BW
Small-Signal Bandwidth
tr
Small-Signal Rise Time
Propagation Delay
VS = ±15V , R1 = ∞
VS = ±5V , R1 = ∞
VS = ±15V, VOUT = ±13V
VS = ±5V, VOUT = ±3V
VS = ±5V
ISET = 1mA
VIN = 30mVRMS at 1kHz, R1 = 100k
R1 = 50Ω, ISET = 500µA
R1 = 50Ω, ISET = 500µA, 10% to 90%
R1 = 50Ω, ISET = 500µA, 50% to 50%
● ±13 ±14
V
● ±3 ±4
V
●2
8
MΩ
●2
8
MΩ
6
pF
●
9
15
mA
0.2
%
80
MHz
5
ns
5
ns
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: A heat sink may be required depending on the power supply
voltage.
Note 3: This is the total capacitance at Pin 1. It includes the input
capacitance of the current feedback amplifier and the output capacitance
of the transconductance amplifier.
Note 4: Slew rate is measured at ±5V on a ±10V output signal while
operating on ±15V supplies with RF = 1k, RG = 110Ω and RL = 400Ω. The
slew rate is much higher when the input is overdriven, see the applications
section.
Note 5: Rise time is measured from 10% to 90% on a ±500mV output
signal while operating on ±15V supplies with RF = 1k, RG = 110Ω and
RL = 100Ω. This condition is not the fastest possible, however, it does
guarantee the internal capacitances are correct and it makes automatic
testing practical.
Note 6: AC parameters are 100% tested on the ceramic and plastic DIP
packaged parts (J and N suffix) and are sample tested on every lot of
the SO packaged parts (S suffix).
Note 7: NTSC composite video with an output level of 2V.
Note 8: Back to back 6V Zener diodes are connected between Pins 2
and 3 for ESD protection.
1228fc
4
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