LT1228 Linear Technology, LT1228 Datasheet - Page 5

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

TYPICAL PERFOR
0.01
100
100
0.1
0.1
10
10
10
1
1
1
10
10
1
Small-Signal Bandwidth vs
Set Current
Total Harmonic Distortion vs
Input Voltage
Small-Signal Control Path
Bandwidth vs Set Current
V
V
V
(PIN 2 TO 3)
V
S
S
IN
S
= ±15V
= ±2V TO ±15V
= ±15V
= 200mV
I
SET
I
SET
= 1mA
INPUT VOLTAGE (mV
= 100 A
SET CURRENT ( A)
SET CURRENT ( A)
10
R1 = 100
100
100
R1 = 1k
R1 = 10k
R1 = 100k
I
I
OUT
SET
100
P–P
W
)
LT1228 • TPC04
LT1228 • TPC07
LT1228 • TPC01
A
1000
1000
U
1000
CE
0.001
C
0.01
100
0.1
10
1000
HARA TERISTICS
1
100
0.9
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
10
Small-Signal Transconductance
and Set Current vs Bias Voltage
0
10
Spot Output Noise Current vs
Frequency
Small-Signal Control Path
Gain vs Input Voltage
0
V
T
A
S
1.0
= 25°C
= ±2V TO ±15V
BIAS VOLTAGE, PIN 5 TO 4, (V)
INPUT VOLTAGE, PIN 2 TO 3, (mVDC)
C
40
100
1.1
FREQUENCY (Hz)
80
1.2
1k
1.3
120
V
T
I
I
SET
SET
S
A
I
I
OUT
SET
= 25°C
= ±2V TO ±15V
= 1mA
= 100 A
LT1228 • TPC02
10k
1.4
LT1228 • TPC05
160
LT1228 • TPC08
Transconductance Amplifier, Pins 1, 2, 3 & 5
1.5
100k
10000
1000
100
10
1.0
0.1
200
–0.5
–0.5
–1.0
–1.5
–2.0
–1.0
+1.0
+0.5
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
2.0
1.5
1.0
0.5
V
V
V
V
0
–200
+
–
+
–
–50
–50
Small-Signal Transconductance
vs DC Input Voltage
Input Common-Mode Limit vs
Temperature
Output Saturation Voltage vs
Temperature
V
I
SET
–150 –100 –50
S
–25
–25
= ±2V TO ±15V
= 100 A
INPUT VOLTAGE (mVDC)
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
25
25
V
V
±2V
R1 =
0
+
–
= 2V TO 15V
= –2V TO –15V
50
50
50
V
LT1228
–55°C
S
25°C
75
75
100 150
±15V
LT1228 • TPC03
LT1228 • TPC06
LT1228 • TPC09
125°C
100
100
5
200
125
125