LT1225 LINER [Linear Technology], LT1225 Datasheet

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LT1225

Manufacturer Part Number
LT1225
Description
Very High Speed Operational Amplifier
Manufacturer
LINER [Linear Technology]
Datasheet

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V
FEATURE
A
TYPICAL
+
IN
PPLICATI
Gain of 5 Stable
150MHz Gain Bandwidth
400V/ s Slew Rate
20V/mV DC Gain, R
1mV Maximum Input Offset Voltage
Wide Supply Range: 2.5V to 15V
7mA Supply Current
90ns Settling Time to 0.1%, 10V Step
Drives All Capacitive Loads
Wideband Amplifiers
Buffers
Active Filters
Video and RF Amplification
Cable Drivers
Data Acquisition Systems
12V Minimum Output Swing into 500
250
250
20MHz,A
+
+
LT1225
LT1225
A
S
200pF
1k
1k
PPLICATI
O
V
U
= 50 Instrumentation Amplifier
S
L
= 500
1k
1k
O
U
+
LT1225
10k
10k
LT1225 TA01
V
OUT
D
The LT1225 is a very high speed operational amplifier with
excellent DC performance. The LT1225 features reduced
input offset voltage and higher DC gain than devices with
comparable bandwidth and slew rate. The circuit is a
single gain stage with outstanding settling characteristics.
The fast settling time makes the circuit an ideal choice for
data acquisition systems. The output is capable of driving
a 500 load to 12V with 15V supplies and a 150 load
to 3V on 5V supplies. The circuit is also capable of
driving large capacitive loads which makes it useful in
buffer or cable driver applications.
The LT1225 is a member of a family of fast, high per-
formance amplifiers that employ Linear Technology
Corporation’s advanced bipolar complementary
processing.
ESCRIPTIO
Operational Amplifier
Gain of 5 Pulse Response
U
Very High Speed
LT1225
LT1225 TA02
1

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LT1225 Summary of contents

Page 1

... The circuit is also capable of driving large capacitive loads which makes it useful in buffer or cable driver applications. The LT1225 is a member of a family of fast, high per- formance amplifiers that employ Linear Technology Corporation’s advanced bipolar complementary processing. ...

Page 2

... Total Supply Voltage ( .............................. 36V Differential Input Voltage ......................................... 6V Input Voltage ............................................................ V Output Short Circuit Duration (Note 1) ............ Indefinite Operating Temperature Range LT1225C ................................................ Maximum Junction Temperature Plastic Package .............................................. 150 C Storage Temperature Range ................. – 150 C Lead Temperature (Soldering, 10 sec.)................. 300 C ELECTRICAL C HARA TERISTICS ...

Page 3

... 15V and Note 3: Slew rate is measured between 10V on an output swing of 12V on 15V supplies, and output swing of 3. supplies. Note 4: Full power bandwidth is calculated from the slew rate measurement: FPBW = SR/2 Vp. LT1225 MIN TYP MAX UNITS 1.0 2.0 100 400 ...

Page 4

... INPUT COMMON-MODE VOLTAGE (V) LT1225 TPC05 Input Bias Current vs Temperature 5 ±15V 4.5 4.25 4.0 3.75 3.5 –50 – TEMPERATURE (°C) LT1225 TPC08 Output Voltage Swing vs Supply Voltage 25° 500 30mV – SUPPLY VOLTAGE (±V) Open-Loop Gain vs ...

Page 5

... LTC1225 TPC14 Slew Rate vs Temperature 500 V = ±15V –5 V 450 –SR 400 +SR 350 300 250 200 50 100 125 –50 – TEMPERATURE (˚C) LT1225 V = ±15V 25°C A 10M 100M LTXXXX • TPCXX C = 50pF C = 0pF 100M LT1225 TPC15 100 125 75 LT1225 TPC18 5 ...

Page 6

... The use of balanced source resistance at each input is recommended for applications where DC accuracy must be maximized. Capacitive Loading The LT1225 is stable with all capacitive loads. This is accomplished by sensing the load induced output pole and adding compensation at the amplifier gain node. As the capacitive load increases, both the bandwidth and phase ...

Page 7

... A = – 1000pF The LT1225 can drive coaxial cable directly, but for best pulse fidelity the cable should be doubly terminated with a resistor in series with the output TYPICAL A PPLICATI Lag Compensation ...

Page 8

... LT1225 PLI CHE A TIC V+ 7 NULL 1 8 +IN 3 V– 4 PACKAGE DESCRIPTIO 0.300 – 0.320 (7.620 – 8.128) 0.065 (1.651) 0.009 – 0.015 TYP (0.229 – 0.381) +0.025 0.045 ± 0.015 0.325 –0.015 (1.143 ± 0.381) +0.635 8.255 – ...

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