LT1361 LINER [Linear Technology], LT1361 Datasheet

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LT1361

Manufacturer Part Number
LT1361
Description
Dual and Quad 50MHz, 800V/us Op Amps
Manufacturer
LINER [Linear Technology]
Datasheet

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APPLICATIO S
FEATURES
TYPICAL APPLICATIO
50MHz Gain Bandwidth
800V/ s Slew Rate
5mA Maximum Supply Current per Amplifier
Unity-Gain Stable
C-Load
9nV/ Hz Input Noise Voltage
1mV Maximum Input Offset Voltage
1 A Maximum Input Bias Current
250nA Maximum Input Offset Current
4.5V/mV Minimum DC Gain, R
60ns Settling Time to 0.1%, 10V Step
0.2% Differential Gain, A
0.3 Differential Phase, A
Specified at 2.5V, 5V, and 15V
Wideband Amplifiers
Buffers
Active Filters
Video and RF Amplification
Cable Drivers
Data Acquisition Systems
13V Minimum Output Swing into 500
3.2V Minimum Output Swing into 150
TM
Op Amp Drives All Capacitive Loads
–4
–6
–8
–2
2
0
Cable Driver Frequency Response
1
IN
510
LT1361
+
U
1/2
510
V
FREQUENCY (MHz)
S
= 2.5V
75
V
V
=2, R
=2, R
10
75
V
OUT
L
S
L
U
=1k
L
= 15V
=150
=150
V
S
V
= 10V
1361/1362 TA01
S
= 5V
100
DESCRIPTIO
The LT1361/LT1362 are dual and quad low power high
speed operational amplifiers with outstanding AC and DC
performance. The amplifiers feature much lower supply
current and higher slew rate than devices with comparable
bandwidth. The circuit topology is a voltage feedback
amplifier with matched high impedance inputs and the
slewing performance of a current feedback amplifier. The
high slew rate and single stage design provide excellent
settling characteristics which make the circuit an ideal
choice for data acquisition systems. Each output drives a
500 load to 13V with 15V supplies and a 150 load to
capacitive load making them useful in buffer or cable
driving applications.
The LT1361/LT1362 are members of a family of fast, high
performance amplifiers using this unique topology and
employing Linear Technology Corporation’s advanced
bipolar complementary processing. For a single amplifier
version of the LT1361/LT1362 see the LT1360 data sheet.
For higher bandwidth devices with higher supply currents
see the LT1363 through LT1365 data sheets. For lower
supply current amplifiers see the LT1354 to LT1359 data
sheets. Singles, duals, and quads of each amplifier are
available.
C-Load is a trademark of Linear Technology Corporation
3.2V on 5V supplies. The amplifiers are stable with any
, LTC and LT are registered trademarks of Linear Technology Corporation.
50MHz, 800V/ s Op Amps
A
V
= –1 Large-Signal Response
U
Dual and Quad
LT1361/LT1362
1361/1362 TA02
1

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LT1361 Summary of contents

Page 1

... L The LT1361/LT1362 are members of a family of fast, high performance amplifiers using this unique topology and employing Linear Technology Corporation’s advanced bipolar complementary processing. For a single amplifier version of the LT1361/LT1362 see the LT1360 data sheet. ...

Page 2

... V = 12V 15V CM Differential 15V 15V TOP VIEW ORDER PART NUMBER + OUT B LT1361CS8 A 6 – + PART MARKING S8 PACKAGE 1361 = 190 ORDER PART TOP VIEW NUMBER 16 OUT D 15 –IN D LT1362CS +IN D – ...

Page 3

... 150 15V 3.58MHz 15V 1MHz 15V 10V 500 15V OUT L Each Amplifier 15V Each Amplifier 5V LT1361/LT1362 MIN TYP MAX UNITS 12.0 13.4 V 2.5 3.4 V 0.5 1.1 V –13.2 –12.0 V –3.2 –2.5 V –0.9 –0 ...

Page 4

... LT1361/LT1362 ELECTRICAL CHARACTERISTICS unless otherwise noted SYMBOL PARAMETER V Input Offset Voltage OS Input V Drift OS I Input Offset Current OS I Input Bias Current B CMRR Common Mode Rejection Ratio PSRR Power Supply Rejection Ratio A Large-Signal Voltage Gain VOL V Output Swing ...

Page 5

... Note 8: The LT1361C/LT1362C are guaranteed functional over the operating temperature range of – Note 9: The LT1361C/LT1362C are guaranteed to meet specified performance from The LT1361C/LT1362C are designed, characterized and expected to meet specified performance from – but are not tested or QA sampled at these temperatures. For guaranteed I-grade parts, consult the factory ...

Page 6

... LT1361/LT1362 W U TYPICAL PERFORMANCE CHARACTERISTICS Input Bias Current vs Temperature 0 15V – 0 ———— 0.5 0.4 0.3 0.2 0.1 0 –50 – 100 125 TEMPERATURE ( C) 1361/1362 G04 Open-Loop Gain vs Temperature ±15V ±12V – ...

Page 7

... Power Supply Rejection Ratio vs Frequency 50 100 +PSRR – PSRR 100 1k 10k 100k 1M FREQUENCY (Hz) LT1361/LT1362 Crosstalk vs Frequency 120 – –30 100 0dBm – –50 60 –60 40 – ±15V – – ...

Page 8

... LT1361/LT1362 W U TYPICAL PERFORMANCE CHARACTERISTICS Slew Rate vs Supply Voltage 2000 1800 A = – 1600 – ————— 1400 2 1200 1000 800 600 400 200 SUPPLY VOLTAGE ( V) 1361/1362 G22 Total Harmonic Distortion vs Frequency 0 ...

Page 9

... TA35 W U Input Considerations Each of the LT1361/LT1362 inputs is the base of an NPN and a PNP transistor whose base currents are of opposite polarity and provide first-order bias current cancellation. Because of variation in the matching of NPN and PNP beta, the polarity of the input bias current can be positive or negative ...

Page 10

... Circuit Operation The LT1361/LT1362 circuit topology is a true voltage feedback amplifier that has the slewing behavior of a current feedback amplifier. The operation of the circuit can be understood by referring to the simplified schematic. ...

Page 11

... N Package 14-Lead PDIP (Narrow 0.300) (LTC DWG # 05-08-1510) 0.045 – 0.065 (1.143 – 1.651) 0.065 (1.651) TYP 0.005 0.018 0.003 (0.125) (0.457 0.076) MIN 0.100 (2.54) BSC LT1361/LT1362 OUT 1361/1362 SS01 0.400* (10.160) MAX 0.255 0.015* (6.477 0.381) ...

Page 12

... BSC COMMENTS Single Version of LT1361/LT1362 Faster Version of LT1361/LT1362, V Lower Power Version of LT1361/LT1362, V Low Voltage, Low Power LT1361, I 1MHz, 4th Order Butterworth Filter 909 1.1k 47pF 22pF – 1.1k 2.21k 1/2 – ...

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