LT1228(Rev_A) 查看數據表（PDF） - Linear Technology
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LT1228 Datasheet PDF : 20 Pages
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LT1228
TYPICAL PERFOR A CE CHARACTERISTICS Transconductance Amplifier, Pins 1, 2, 3 & 5
Small-Signal Bandwidth vs
Set Current
100
VS = ±15V
R1 = 100Ω
R1 = 1k
Small-Signal Transconductance
and Set Current vs Bias Voltage
100
VS = ±2V TO ±15V
TA = 25°C
10
10000
1000
10
1
100
R1 = 10k
0.1
10
1
0.01
1.0
R1 = 100k
0.1
10
100
1000
SET CURRENT (µA)
LT1228 • TPC01
0.001
0.9
0.1
1.0 1.1 1.2 1.3 1.4 1.5
BIAS VOLTAGE, PIN 5 TO 4, (V)
LT1228 • TPC02
Total Harmonic Distortion vs
Input Voltage
10
VS = ±15V
Spot Output Noise Current vs
Frequency
1000
VS = ±2V TO ±15V
TA = 25°C
1
ISET = 100µA
0.1
0.01
1
ISET = 1mA
10
100
1000
INPUT VOLTAGE (mVP–P)
LT1228 • TPC04
Small-Signal Control Path
Bandwidth vs Set Current
100
VS = ±2V TO ±15V
VIN = 200mV
(PIN 2 TO 3)
10
∆IOUT
∆ISET
1
10
100
1000
SET CURRENT (µA)
LT1228 • TPC07
ISET = 1mA
100
ISET = 100µA
10
10
100
1k
10k
100k
FREQUENCY (Hz)
LT1228 • TPC05
Small-Signal Control Path
Gain vs Input Voltage
1.0
0.9
0.8
0.7
0.6
0.5
∆IOUT
0.4
∆ISET
0.3
0.2
0.1
0
0
40
80 120 160 200
INPUT VOLTAGE, PIN 2 TO 3, (mVDC)
LT1228 • TPC08
Small-Signal Transconductance
vs DC Input Voltage
2.0
1.8 VS = ±2V TO ±15V
ISET = 100µA
1.6
1.4
–55°C
1.2
1.0
25°C
0.8
0.6
125°C
0.4
0.2
0
–200 –150 –100 –50 0
50 100 150 200
INPUT VOLTAGE (mVDC)
LT1228 • TPC03
Input Common-Mode Limit vs
Temperature
V+
– 0.5
V+ = 2V TO 15V
–1.0
–1.5
–2.0
2.0
1.5
1.0
0.5
V–
–50 –25
V– = –2V TO –15V
0 25 50 75 100 125
TEMPERATURE (°C)
LT1228 • TPC06
Output Saturation Voltage vs
Temperature
V+
– 0.5
–1.0
±2V ≤ VS ≤ ±15V
R1 = ∞
+1.0
+0.5
V–
–50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
LT1228 • TPC09
5
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