參數(shù)資料
型號(hào)： LT1228
廠商： Linear Technology Corporation
英文描述： 100MHz Current Feedback Amplifier with DC Gain Control(100MHz ，電流反饋放大器（帶直流增益控制）)
中文描述： 100MHz的電流反饋放大器的直流增益控制（100MHz時(shí)，電流反饋放大器（帶直流增益控制））
文件頁(yè)數(shù)： 4/20頁(yè)
文件大?。?/td> 357K
代理商： LT1228
LT1228
4
ELECTRICAL C
Transconductance Amplifier, Pins 1, 2, 3, 5.
±
5V
≤
V
S
≤
±
15V, I
SET
= 100
μ
A, V
CM
= 0V unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
HARA TERISTICS
CMRR
Common-Mode Rejection Ratio
V
S
=
±
15V, V
CM
=
±
13V, T
A
= 25
°
C
V
S
=
±
15V, V
CM
=
±
12V
V
S
=
±
5V, V
CM
=
±
3V, T
A
= 25
°
C
V
S
=
±
5V, V
CM
=
±
2V
V
S
=
±
2V to
±
15V, T
A
= 25
°
C
V
S
=
±
3V to
±
15V
I
SET
= 100
μ
A, I
OUT
=
±
30
μ
A, T
A
= 25
°
C
60
60
60
60
60
60
0.75
100
dB
dB
dB
dB
dB
dB
G
100
G
PSRR
Power Supply Rejection Ratio
100
G
g
m
Transconductance
Transconductance Drift
Maximum Output Current
Output Leakage Current
1.00
–0.33
100
0.3
1.25
μ
A/mV
%/
°
C
G
I
OUT
I
OL
I
SET
= 100
μ
A
I
SET
= 0
μ
A (+I
IN
of CFA), T
A
= 25
°
C
G
70
130
3
10
μ
A
μ
A
μ
A
G
V
OUT
Maximum Output Voltage Swing
V
S
=
±
15V , R1 =
∞
V
S
=
±
5V , R1 =
∞
V
S
=
±
15V, V
OUT
=
±
13V
V
S
=
±
5V, V
OUT
=
±
3V
V
S
=
±
5V
I
SET
= 1mA
V
IN
= 30mV
RMS
at 1kHz, R1 = 100k
R1 = 50
,
I
SET
= 500
μ
A
R1 = 50
,
I
SET
= 500
μ
A, 10% to 90%
R1 = 50
,
I
SET
= 500
μ
A, 50% to 50%
G
G
±
13
±
3
2
2
±
14
±
4
8
8
6
9
0.2
80
5
5
V
V
R
O
Output Resistance
G
G
M
M
pF
mA
%
MHz
ns
ns
Output Capacitance (Note 2)
Supply Current, Both Amps
Total Harmonic Distortion
Small-Signal Bandwidth
Small-Signal Rise Time
Propagation Delay
I
S
THD
BW
t
r
G
15
MIN
TYP
MAX
UNITS
The
G
denotes specifications which apply over the operating temperature
range.
Note 1:
A heat sink may be required depending on the power supply
voltage.
Note 2:
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 3:
Slew rate is measured at
±
5V on a
±
10V output signal while
operating on
±
15V supplies with R
F
= 1k, R
G
= 110
and R
L
= 400
. The
slew rate is much higher when the input is overdriven, see the applications
section.
Note 4:
Rise time is measured from 10% to 90% on a
±
500mV output
signal while operating on
±
15V supplies with R
F
= 1k, R
G
= 110
and
R
L
= 100
. This condition is not the fastest possible, however, it does
guarantee the internal capacitances are correct and it makes automatic
testing practical.
Note 5:
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 6:
NTSC composite video with an output level of 2V.
Note 7:
Back to back 6V Zener diodes are connected between pins 2 and
3 for ESD protection.
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