Datasheet

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LT1364/LT1365

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70MHz Gain Bandwidth

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1000V/µs Slew Rate

■

7.5mA Maximum Supply Current per Amplifier

■

Unity-Gain Stable

■

C-Load

Op Amp Drives All Capacitive Loads

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9nV/√Hz Input Noise Voltage

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1.5mV Maximum Input Offset Voltage

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2µA Maximum Input Bias Current

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350nA Maximum Input Offset Current

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50mA Minimum Output Current

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±7.5V Minimum Output Swing into 150Ω

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4.5V/mV Minimum DC Gain, R

=1k

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50ns Settling Time to 0.1%, 10V Step

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0.06% Differential Gain, A

=2, R

=150Ω

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0.04° Differential Phase, A

=2, R

=150Ω

■

Specified at ±2.5V, ±5V, and ±15V

Dual and Quad

70MHz, 1000V/µs Op Amps

The LT1364/LT1365 are dual and quad high speed opera-

tional amplifiers with outstanding AC and DC perfor-

mance. The amplifiers feature much lower supply current

and higher slew rate than devices with comparable band-

width. 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 150Ω load

to ±7.5V with ±15V supplies and to ±3.4V on ±5V sup-

plies. The amplifiers are stable with any capacitive load

making them useful in buffer or cable driving applications.

The LT1364/LT1365 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 LT1364/LT1365 see the LT1363 data sheet.

For 50MHz devices with 4mA supply currents see the

LT1360 through LT1362 data sheets. For lower supply

current amplifiers see the LT1354 to LT1359 data sheets.

Singles, duals, and quads of each amplifier are available.

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Wideband Amplifiers

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Buffers

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Active Filters

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Video and RF Amplification

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Cable Drivers

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Data Acquisition Systems

FREQUENCY (MHz)

–8

–6

–4

–2

GAIN (dB)

100

1364/1365 TA01

= ±10V

= ±5V

= ±2.5V

= ±15V

–

1/2

LT1364

510Ω

75Ω

OUT

75Ω

510Ω

Cable Driver Frequency Response

1364/1365 TA02

= –1 Large-Signal Response

C-Load is a trademark of Linear Technology Corporation

, LTC and LT are registered trademarks of Linear Technology Corporation.

APPLICATIO S

FEATURES

TYPICAL APPLICATIO

DESCRIPTIO

Summary of content (12 pages)

PAGE 1
LT1364/LT1365 Dual and Quad 70MHz, 1000V/µs Op Amps U DESCRIPTIO FEATURES ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ 70MHz Gain Bandwidth 1000V/µs Slew Rate 7.5mA Maximum Supply Current per Amplifier Unity-Gain Stable C-LoadTM Op Amp Drives All Capacitive Loads 9nV/√Hz Input Noise Voltage 1.5mV Maximum Input Offset Voltage 2µA Maximum Input Bias Current 350nA Maximum Input Offset Current 50mA Minimum Output Current ±7.5V Minimum Output Swing into 150Ω 4.5V/mV Minimum DC Gain, RL=1k 50ns Settling Time to 0.
PAGE 2
LT1364/LT1365 W W U W ABSOLUTE MAXIMUM RATINGS (Note 1) Total Supply Voltage (V + to V –) ............................... 36V Differential Input Voltage (Transient Only, Note 2) .................................... ±10V Input Voltage ............................................................ ±VS Output Short-Circuit Duration (Note 3) ............ Indefinite Operating Temperature Range (Note 8) ...–40°C to 85°C Specified Temperature Range (Note 9) ....
PAGE 3
LT1364/LT1365 ELECTRICAL CHARACTERISTICS SYMBOL PARAMETER TA = 25°C, VCM = 0V unless otherwise noted. VSUPPLY MIN TYP + ±15V ±5V ±2.5V 12.0 2.5 0.5 13.4 3.4 1.1 Input Voltage Range – ±15V ±5V ±2.5V Input Voltage Range CONDITIONS VCM = ±12V VCM = ±2.5V VCM = ±0.5V MAX UNITS V V V –13.2 –12.0 –3.2 –2.5 –0.9 –0.5 V V V ±15V ±5V ±2.5V 84 76 66 90 81 71 90 100 dB VOUT = ±12V, RL = 1k VOUT = ±10V, RL = 500Ω VOUT = ±7.5V, RL = 150Ω VOUT = ±2.5V, RL = 500Ω VOUT = ±2.
PAGE 4
LT1364/LT1365 ELECTRICAL CHARACTERISTICS 0°C ≤ TA ≤ 70°C, VCM = 0V unless otherwise noted. The ● denotes the specifications which apply over the temperature range SYMBOL PARAMETER CONDITIONS VSUPPLY MIN VOS Input Offset Voltage (Note 4) ±15V ±5V ±2.5V ● ● ● Input VOS Drift (Note 7) ±2.5V to ±15V ● TYP 10 MAX UNITS 2.0 2.0 2.2 mV mV mV 13 µV/°C IOS Input Offset Current ±2.5V to ±15V ● 500 nA IB Input Bias Current ±2.
PAGE 5
LT1364/LT1365 ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the temperature range – 40°C ≤ TA ≤ 85°C, VCM = 0V unless otherwise noted. (Note 9) SYMBOL PARAMETER CONDITIONS VSUPPLY VOUT Output Swing RL = 1k, VIN = ±40mV RL = 500Ω, VIN = ±40mV RL = 500Ω, VIN = ±40mV RL = 150Ω, VIN = ±40mV RL = 500Ω, VIN = ±40mV ±15V ±15V ±5V ±5V ±2.5V ● ● ● ● ● 13.4 12.7 3.4 3.2 1.2 ±V ±V ±V ±V ±V IOUT Output Current VOUT = ±12.7V VOUT = ±3.
PAGE 6
LT1364/LT1365 U W TYPICAL PERFORMANCE CHARACTERISTICS Input Bias Current vs Temperature 0.8 0.6 0.4 0.2 0 –50 en in 10 1 1 –25 0 25 50 75 TEMPERATURE (°C) 100 10 125 100 OUTPUT VOLTAGE SWING (V) 10 78 77 76 75 TA = 25°C RL = 1k –1.5 RL = 500Ω –2.0 2.0 100 RL = 500Ω 1.5 RL = 1k 1.0 0 5 10 15 SUPPLY VOLTAGE (±V) Output Short-Circuit Current vs Temperature 2.0 1.5 –40°C 1.
PAGE 7
LT1364/LT1365 U W TYPICAL PERFORMANCE CHARACTERISTICS PHASE 60 AV = 100 VS = ±15V 50 GAIN GAIN (dB) 1 AV = 10 VS = ±5V 20 10 0.1 0 1M 10M FREQUENCY (Hz) 100M 100k 1M 10M FREQUENCY (Hz) 40 6 35 30 90 80 GAIN BANDWIDTH VS = ±15V 70 25 20 5 –8 0 25 50 75 TEMPERATURE (°C) 100 ±5V –4 –6 –25 ±15V –2 10 ±2.
PAGE 8
LT1364/LT1365 U W TYPICAL PERFORMANCE CHARACTERISTICS Slew Rate vs Temperature Slew Rate vs Supply Voltage 2400 1800 1600 AV = –2 SR+ + SR– SR = ————— 2 1200 SLEW RATE (V/µs) 2000 1400 1200 1000 800 1600 1000 VS = ±15V 800 600 1400 1200 1000 VS = ±5V 600 400 5 10 SUPPLY VOLTAGE (±V) 200 –50 15 0 –25 0 25 50 75 TEMPERATURE (°C) 1364/1365 G22 AV = 1 AV = 1 20 15 10 5 0.
PAGE 9
LT1364/LT1365 U W TYPICAL PERFORMANCE CHARACTERISTICS Small-Signal Transient (AV = 1) Small-Signal Transient (AV = –1) 1364/1365 TA31 Small-Signal Transient (AV = –1, CL = 200pF) 1364/1365 TA33 1364/1365 TA32 Large-Signal Transient (AV = 1) Large-Signal Transient (AV = –1) 1364/1365 TA34 Large-Signal Transient (AV = 1, CL = 10,000pF) 1364/1365 TA35 1364/1365 TA36 U W U U APPLICATIONS INFORMATION Layout and Passive Components Input Considerations The LT1364/LT1365 amplifiers are easy to us
PAGE 10
LT1364/LT1365 U W U U APPLICATIONS INFORMATION a comparator, peak detector or other open-loop application with large, sustained differential inputs. Under normal, closed-loop operation, an increase of power dissipation is only noticeable in applications with large slewing outputs and is proportional to the magnitude of the differential input voltage and the percent of the time that the inputs are apart. Measure the average supply current for the application in order to calculate the power dissipation.
PAGE 11
LT1364/LT1365 W W SI PLIFIED SCHE ATIC V+ R1 500Ω +IN CC RC OUT –IN C V– 1364/1365 SS01 U PACKAGE DESCRIPTION Dimension in inches (millimeters) unless otherwise noted. N8 Package 8-Lead PDIP (Narrow 0.300) (LTC DWG # 05-08-1510) 0.300 – 0.325 (7.620 – 8.255) 0.045 – 0.065 (1.143 – 1.651) ( +0.035 0.325 –0.015 +0.889 8.255 –0.381 0.130 ± 0.005 (3.302 ± 0.127) 0.065 (1.651) TYP 0.009 – 0.015 (0.229 – 0.381) ) 0.400* (10.160) MAX 8 7 6 5 1 2 3 4 0.255 ± 0.015* (6.477 ± 0.381) 0.
PAGE 12
LT1364/LT1365 U TYPICAL APPLICATIONS Two Op Amp Instrumentation Amplifier R5 220Ω R1 10k 2MHz, 4th Order Butterworth Filter R4 10k 464Ω R2 1k 22pF 464Ω R3 1k – 1/2 LT1364 1.33k VIN – 220pF 1/2 LT1364 + – 549Ω 47pF – 1.