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PDF LT1220C Data sheet ( Hoja de datos )
| Número de pieza | LT1220C | |
| Descripción | 45MHz/ 250V/us Operational Amplifier | |
| Fabricantes | Linear Technology | |
| Logotipo |  |
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FEATURES
s Gain-Bandwidth: 45MHz
s Unity-Gain Stable
s Slew Rate: 250V/µs
s C-LoadTM Op Amp Drives Capacitive Loads
s Maximum Input Offset Voltage: 1mV
s Maximum Input Bias Current: 300nA
s Maximum Input Offset Current: 300nA
s Minimum Output Swing Into 500Ω: ±12V
s Minimum DC Gain: 20V/mV, RL = 500Ω
s Settling Time to 0.1%: 75ns, 10V Step
s Settling Time to 0.01%: 95ns, 10V Step
s Differential Gain: 0.1%, AV = 2, RL = 150Ω
s Differential Phase: 0.2°, AV = 2, RL = 150Ω
APPLICATI S
s Wideband Amplifiers
s Buffers
s Active Filters
s Video and RF Amplification
s Cable Drivers
s 8-, 10-, 12-Bit Data Acquisition Systems
LT1220
45MHz, 250V/µs
Operational Amplifier
DESCRIPTIO
The LT1220 is a high speed operational amplifier with
superior DC performance. The LT1220 features reduced
input offset voltage, lower input bias currents and higher
DC gain than devices with comparable bandwidth and slew
rate. The circuit is a single gain stage that includes
proprietary DC gain enhancement circuitry to obtain pre-
cision with high speed. The high gain and fast settling time
make the circuit an ideal choice for data acquisition
systems. The circuit is also capable of driving large
capacitive loads which makes it useful in buffer or cable
driver applications.
The LT1220 is a member of a family of fast, high perfor-
mance amplifiers that employ Linear Technology
Corporation’s advanced complementary bipolar process-
ing. For applications with gains of 4 or greater the LT1221
can be used, and for gains of 10 or greater the LT1222 can
be used for increased bandwidth.
and LTC are registered trademarks and LT is a trademark of Linear Technology Corporation.
C-Load is a trademark of Linear Technology Cortporation.
TYPICAL APPLICATION
Two Op Amp Instrumentation Amplifier
R5
220Ω
R4
10k
R1 R2
10k 1k
– R3
1k –
LT1220
–+
VIN
LT1220
+
VOUT
+
GAIN = [R4/R3][1 + (1/2)(R2/R1 + R3/R4) + (R2 + R3)/R5] = 102
TRIM R5 FOR GAIN
TRIM R1 FOR COMMON-MODE REJECTION
BW = 450kHz
LT1220 • TA01
Inverter Pulse Response
RF = RG = 1k VIN = 20V
VS = ±15V f = 2MHz
LT1220 • TA02
1
1 page  
TYPICAL PERFORMANCE CHARACTERISTICS
LT1220
Common-Mode Rejection Ratio
vs Frequency
120
VS = ±15V
100 TA = 25°C
80
60
40
20
0
1k 10k 100k 1M 10M 100M
FREQUENCY (Hz)
LT1220 • TPC10
Voltage Gain and Phase
vs Frequency
100 100
VS = ±15V
80 80
VS = ±5V
60 60
40 40
VS = ±15V
20 20
VS = ±5V
00
TA = 25°C
–20
100 1k
10k 100k 1M
FREQUENCY (Hz)
–20
10M 100M
LT1220 • TPC13
Gain-Bandwidth vs Temperature
50
VS = ±15V
48
46
44
42
40
38
–50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
LT1220 • TPC16
Output Swing and Error
vs Settling Time (Noninverting)
10
8
6
10mV 1mV
4
2
0
–2
–4
10mV
–6
1mV
–8
–10
0
25 50 75 100
SETTLING TIME (ns)
125
LT1220 • TPC11
Output Swing and Error
vs Settling Time (Inverting)
10
8
6
10mV
4
1mV
2
0
–2
–4
10mV
1mV
–6
–8
–10
0
25 50 75 100
SETTLING TIME (ns)
125
LT1220 • TPC12
Frequency Response
vs Capacitive Load
10
8
VS = ±15V
TA = 25°C
6 AV = –1
4
2
0
C = 100pF
–2
C = 50pF
–4
– 6 C = 500pF
C=0
–8
–10
1
C = 1000pF
10
FREQUENCY (MHz)
100
LT1220 • TPC14
Slew Rate vs Temperature
300
VS = ±15V
AV = –1
275 RIN = RF = 1k
+SR
Closed-Loop Output Impedance
vs Frequency
100
VS = ±15V
TA = 25°C
AV = 1
10
1
0.1
0.01
10k
100k
1M
10M
FREQUENCY (Hz)
100M
LT1220 • TPC15
Total Harmonic Distortion
vs Frequency
0.01
VS = ±15V
VO = 3VRMS
RL = 500Ω
250
–SR
225
0.001
AV = –1
200 AV = 1
175
150
–50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
LT1220 • TPC24
0.0001
10
100 1k 10k
FREQUENCY (Hz)
100k
LT1220 • TPC18
5
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet LT1220C.PDF ] | |
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