Datasheet

7
LT1228
1228fc
CCHARA TERIST
ICS
UW
AT
Y
P
I
CA
LPER
F
O
R
C
E
Current Feedback Amplifier, Pins 1, 6, 8
Maximum Capacitive Load vs Total Harmonic Distortion vs 2nd and 3rd Harmonic
Feedback Resistor Frequency Distortion vs Frequency
FEEDBACK RESISTOR (kΩ)
10
CAPACITIVE LOAD (pF)
100
1k
10k
023
LT1228 • TPC19
1
1
V
S
= ±5V
V
S
= ±15V
R
L
= 1k
PEAKING ≤ 5dB
GAIN = 2
FREQUENCY (Hz)
TOTAL HARMONIC DISTORTION (%)
0.01
0.10
10 1k 10k 100k
LT1228 • TPC20
0.001
100
V
S
= ±15V
R
L
= 400Ω
R
F
= R
G
= 750Ω
V
O
= 7V
RMS
V
O
= 1V
RMS
FREQUENCY (MHz)
1
–70
DISTORTION (dBc)
–60
–50
–40
–30
–20
10 100
LT1228 • TPC21
V
S
= ±15V
V
O
= 2V
P–P
R
L
= 100Ω
R
F
= 750Ω
A
V
= 10dB
2nd
3rd
Input Common Mode Limit vs Output Saturation Voltage vs Output Short-Circuit Current vs
Temperature Temperature Temperature
TEMPERATURE (°C)
–25
OUTPUT SHORT-CIRCUIT CURRENT (mA)
40
60
100 150
LT1228 • TPC24
0–50 25 50 75 125 175
30
70
50
TEMPERATURE (°C)
COMMON MODE RANGE (V)
2.0
V
+
–50 25 75 125
LT1228 • TPC22
V
–
0
1.0
–1.0
–2.0
–0.5
–1.5
1.5
0.5
–25 50 100
V
+
= 2V TO 15V
V
–
= –2V TO –15V
TEMPERATURE (°C)
OUTPUT SATURATION VOLTAGE (V)
V
+
–50 25 75 125
LT1228 • TPC23
V
–
0
1.0
–1.0
–0.5
0.5
–25 50 100
R
L
= ∞
±2V ≤ V
S
≤ ±15V
Spot Noise Voltage and Current vs Power Supply Rejection vs Output Impedance vs
Frequency Frequency Frequency
FREQUENCY (Hz)
SPOT NOISE (nV/√Hz OR pA/√Hz)
10
100
10 1k 10k 100k
LT1228 • TPC25
1
100
e
n
+i
n
–i
n
FREQUENCY (Hz)
POWER SUPPLY REJECTION (dB)
40
80
10k 1M 10M 100M
LT1228 • TPC26
0
100k
V
S
= ±15V
R
L
= 100Ω
R
F
= R
G
= 750Ω
NEGATIVE
20
60
POSITIVE
FREQUENCY (Hz)
OUTPUT IMPEDANCE (Ω)
0.1
100
10k 1M 10M 100M
LT1228 • TPC27
0.001
100k
0.01
10
V
S
= ±15V
1.0
R
F
= R
G
= 2k
R
F
= R
G
= 750Ω