Datasheet

LT1228
7
1228fd
TYPICAL PERFORMANCE CHARACTERISTICS
Input Common Mode Limit
vs Temperature
Output Saturation Voltage
vs Temperature
Output Short-Circuit Current
vs Temperature
Spot Noise Voltage and Current
vs Frequency
Power Supply Rejection
vs Frequency Output Impedance vs Frequency
Maximum Capacitive Load
vs Feedback Resistor
Total Harmonic Distortion
vs Frequency
2nd and 3rd Harmonic
Distortion vs Frequency
Transconductance Amplifier, Pins 1, 6, 8
FEEDBACK RESISTOR (kΩ)
10
CAPACITIVE LOAD (pF)
100
1k
10k
0 2 3
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
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
TEMPERATURE (°C)
–25
OUTPUT SHORT-CIRCUIT CURRENT (mA)
40
60
100 150
LT1228 • TPC24
0–50 25 50 75 125 175
30
70
50
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