LT1228 Linear Technology, LT1228 Datasheet - Page 4

• Manufacturer Part Number: LT1228
• Description: 100MHz Current Feedback Amplifier with DC Gain Control
• Manufacturer: Linear Technology

LT1228
Transconductance Amplifier, Pins 1, 2, 3, 5. 5V V
SYMBOL
CMRR
PSRR
g
I
I
V
R
I
THD
BW
t
The
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
slew rate is much higher when the input is overdriven, see the applications
section.
4
ELECTRICAL C
OUT
OL
S
r
m
OUT
O
denotes specifications which apply over the operating temperature
PARAMETER
Common-Mode Rejection Ratio
Power Supply Rejection Ratio
Transconductance
Transconductance Drift
Maximum Output Current
Output Leakage Current
Maximum Output Voltage Swing
Output Resistance
Output Capacitance (Note 2)
Supply Current, Both Amps
Total Harmonic Distortion
Small-Signal Bandwidth
Small-Signal Rise Time
Propagation Delay
HARA TERISTICS
F
= 1k, R
C
G
= 110 and R
L
CONDITIONS
V
V
V
V
V
V
I
I
I
V
V
V
V
V
I
V
R1 = 50
R1 = 50
R1 = 50
SET
SET
SET
SET
= 400 . The
S
S
S
S
S
S
S
S
S
S
S
S
IN
= 2V to 15V, T
= 3V to 15V
= 15V, V
= 15V, V
= 5V, V
= 5V, V
= 15V , R1 =
= 5V , R1 =
= 15V, V
= 5V, V
= 5V
= 30mV
= 100 A, I
= 100 A
= 0 A (+I
= 1mA
15V, I
I
I
I
RMS
CM
CM
SET
SET
SET
OUT
CM
CM
OUT
IN
SET
= 3V, T
OUT
= 2V
= 500 A
= 500 A, 10% to 90%
= 500 A, 50% to 50%
= 13V, T
at 1kHz, R1 = 100k
= 12V
of CFA), T
= 3V
= 13V
= 100 A, V
= 30 A, T
A
Note 4: Rise time is measured from 10% to 90% on a 500mV output
signal while operating on 15V supplies with R
R
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.
= 25 C
L
A
= 100 . This condition is not the fastest possible, however, it does
= 25 C
A
A
= 25 C
= 25 C
A
CM
= 25 C
= 0V unless otherwise noted.
MIN
60
60
60
60
60
60
0.75
70
13
3
2
2
F
–0.33
= 1k, R
TYP
100
100
100
1.00
100
0.3
14
4
8
8
6
9
0.2
80
5
5
G
= 110 and
MAX
1.25
130
3
10
15
UNITS
A/mV
%/ C
MHz
M
M
mA
dB
dB
dB
dB
dB
dB
pF
ns
ns
%
A
A
A
V
V