LT1367 Linear Technology Corporation, LT1367 Datasheet

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LT1367

Manufacturer Part Number
LT1367
Description
Dual And Quad Precision Rail-to-rail Input And Output Op Amps
Manufacturer
Linear Technology Corporation
Datasheet

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APPLICATIONS
FEATURES
TYPICAL
, LTC and LT are registered trademarks of Linear Technology Corporation.
LOAD
Rail-to-Rail Buffer Amplifiers
Low Voltage Signal Processing
Supply Current Sensing at Either Rail
Driving A/D Converters
Input Common Mode Range Includes Both Rails
Output Swings Rail-to-Rail
Low Input Offset Voltage: 150 V
High Common Mode Rejection Ratio: 90dB
High A
Low Input Bias Current: 10nA
Wide Supply Range: 1.8V to 15V
Low Supply Current: 375 A per Amplifier
High Output Drive: 30mA
400kHz Gain-Bandwidth Product
Slew Rate: 0.13V/ s
Stable for Capacitive Loads up to 1000pF
V
CC
R s
0.2
I
200
LOAD
R1
VOL
: >1V/ V Driving 10k Load
APPLICATION
+
Positive Supply Rail Current Sense
1/2 LT1366
U
R2
20k
U
Q1
TP0610L
+
1/2 LT1366
V
O
= I
= I
LOAD
LOAD
• R
• 20
Rail-to-Rail Input and Output
S
1366 TA01
R2
R1
DESCRIPTION
The LT
bipolar op amps which combine rail-to-rail input and
output operation with precision specifications. These op
amps maintain their characteristics over a supply range of
1.8V to 36V. Operation is specified for 3V, 5V and 15V
supplies. Input offset voltage is typically 150 V, with an
open-loop gain A
Common mode rejection is typically 90dB over the full rail-
to-rail input range, and supply rejection is 110dB.
The LT1366/LT1367 have conventional compensation
which assures stability for capacitive loads of 1000pF or
less. The LT1368/LT1369 have compensation that
requires a 0.1 F output capacitor, which improves the
amplifier’s supply rejection and reduces output imped-
ance at high frequencies. The output capacitor’s filtering
action reduces high frequency noise, which is beneficial
when driving A/D converters.
The LT1366/LT1368 are available in plastic 8-pin PDIP and
8-lead SO packages with the standard dual op amp pinout.
The LT1367/LT1369 feature the standard quad pinout,
which is available in a plastic 14-lead SO package. These
devices can be used as plug-in replacements for many
standard op amps to improve input/output range and
precision.
Dual and Quad Precision
®
1366/LT1367/LT1368/LT1369 are dual and quad
Output Saturation Voltage vs Load Current
1000
100
10
0.001
1
VOL
U
of 1 million while driving a 10k load.
0.01
LOAD CURRENT (mA)
0.1
POSITIVE
LT1366/LT1367
LT1368/LT1369
RAIL
Op Amps
NEGATIVE
RAIL
1
10
1366 TA02
1

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LT1367 Summary of contents

Page 1

... A/D converters. The LT1366/LT1368 are available in plastic 8-pin PDIP and 8-lead SO packages with the standard dual op amp pinout. The LT1367/LT1369 feature the standard quad pinout, which is available in a plastic 14-lead SO package. These devices can be used as plug-in replacements for many standard op amps to improve input/output range and precision ...

Page 2

... SYMBOL PARAMETER V Input Offset Voltage (LT1366/LT1368) OS Input Offset Voltage (LT1367/LT1369) V Input Offset Voltage Shift (LT1366/LT1368) OS Input Offset Voltage Match (Channel to Channel) Input Offset Voltage Shift (LT1367/LT1369) Input Offset Voltage Match (Channel to Channel) I Input Bias Current B I Input Bias Current Shift RATINGS Junction Temperature ...

Page 3

... Input Capacitance IN A Large-Signal Voltage Gain VOL CMRR Common Mode Rejection Ratio (LT1366/LT1368) CMRR Match (Channel to Channel) Common Mode Rejection Ratio (LT1367/LT1369) CMRR Match (Channel to Channel) PSRR Power Supply Rejection Ratio PSRR Match (Channel to Channel) (Note 3) V Output Voltage Swing LOW OL ...

Page 4

... Input Offset Current Shift OS Input Bias Current Match (Channel to Channel) A Large-Signal Voltage Gain VOL CMRR Common Mode Rejection Ratio (LT1366/LT1368) CMRR Match (Channel to Channel) Common Mode Rejection Ratio (LT1367/LT1369) CMRR Match (Channel to Channel) V Output Voltage Swing LOW OL V Output Voltage Swing HIGH OH I ...

Page 5

... Input Offset Current Shift OS Input Bias Current Match (Channel to Channel) A Large-Signal Voltage Gain VOL CMRR Common Mode Rejection Ratio (LT1366/LT1368) CMRR Match (Channel to Channel) Common Mode Rejection Ratio (LT1367 /LT1369) V CMRR Match (Channel to Channel) V Output Voltage Swing LOW OL V Output Voltage Swing HIGH OH I ...

Page 6

... VOL Channel Separation SR Slew Rate (LT1366/LT1367) Slew Rate (LT1368/LT1369) CMRR Common Mode Rejection Ratio (LT1366/LT1368) CMRR Match (Channel to Channel) Common Mode Rejection Ratio (LT1367/LT1369) CMRR Match (Channel to Channel) PSRR Power Supply Rejection Ratio PSRR Match (Channel to Channel) V Output Voltage Swing LOW OL ...

Page 7

... Note 2: This parameter is not 100% tested. Note 3: Matching parameters are the difference between amplifiers A and D and between B and C on the LT1367/LT1369; between the two amplifiers on the LT1366/LT1368. Note 4: Input offset voltage match is the difference in offset voltage between amplifiers measured at both V ...

Page 8

... LT1366/LT1367 LT1368/LT1369 W U TYPICAL PERFORMANCE CHARACTERISTICS (The data presented here applies to the LT1366/LT1367/LT1368/LT1369 unless otherwise noted.) PNP Stage V Distribution OS (LT1366/LT1368) 30 N-PACKAGE –350 –250 –150 – 150 250 350 INPUT OFFSET VOLTAGE ( V) LT1366 TPC03 Supply Current vs Temperature ...

Page 9

... W U TYPICAL PERFORMANCE CHARACTERISTICS (The data presented here applies to the LT1366/LT1367/LT1368/LT1369 unless otherwise noted.) Minimum Supply Voltage 200 150 100 – NONFUNCTIONAL TOTAL SUPPLY VOLTAGE (V) LT1366 TPC10 Noise Current Spectrum 0 5V ...

Page 10

... LT1366/LT1367 LT1368/LT1369 W U TYPICAL PERFORMANCE CHARACTERISTICS (The data presented here applies to the LT1366/LT1367/LT1368/LT1369 unless otherwise noted.) Gain-Bandwidth and Phase Margin vs Supply Voltage (LT1366/LT1367) 500 450 GBW 400 PHASE MARGIN 350 300 250 200 150 100 SUPPLY VOLTAGE (V) ...

Page 11

... W U TYPICAL PERFORMANCE CHARACTERISTICS (The data presented here applies to the LT1366/LT1367/LT1368/LT1369 unless otherwise noted.) THD + Noise vs Frequency 1. P 10k –1 V 0.001 0.01 0 FREQUENCY (kHz) LT1366 TPC28 U U APPLICATIONS INFORMATION Rail-to-Rail Operation The LT1366 family differs from conventional op amps in the design of both the input and output stages ...

Page 12

... LT1366/LT1367 LT1368/LT1369 U U APPLICATIONS INFORMATION cated on Linear Technology’s proprietary complementary bipolar process, which ensures very similar DC and AC characteristics for the output devices Q24 and Q26. A simple comparator Q5 steers current from current source I1 between the two input stages. When the input ...

Page 13

... U APPLICATIONS INFORMATION Improved Supply Rejection in the LT1368/LT1369 The LT1368/LT1369 are variations of the LT1366/LT1367 offering greater supply rejection and lower high frequency output impedance. The LT1368/LT1369 require a 0.1 F load capacitance for compensation. The output capaci- tance forms a filter, which reduces pickup from the supply and lowers the output impedance ...

Page 14

... LT1366/LT1367 LT1368/LT1369 U TYPICAL APPLICATIONS Precision Low Dropout Regulator Microprocessors and complex digital circuits frequently specify tight control of power supply characteristics. The circuit shown in Figure 6 provides a precise 3.6V, 1A output from a minimum 3.8V input voltage. The circuit's nominal operating voltage is 4.75V 5%. The voltage reference and resistor ratios determine output voltage accuracy, while the LT1366’ ...

Page 15

... LT1367 + 10k 3.3V *1% RESISTORS Figure 8. 4-Pole 1kHz, 3.3V Single Supply, State Variable Filter Using the LT1367 input voltage, circuit operation is limited by the LT1366’s absolute maximum ratings and the output power require- ments. The circuit delivers 1A at 200mV of sense voltage. With a 5V input supply, the power dissipation is 5W. For opera- tion ambient temperature, the MOSFET’ ...

Page 16

... LT1366/LT1367 LT1368/LT1369 U TYPICAL APPLICATIONS the 2 op amp loop to create a negative summing junction 1 at A1’s positive input . The circuit has low sensitivities for center frequency and Q, which are set with the following equations 1/(R1 • C1 • R2 • C2) 0 where 1/( • Q • C1) and R2 = Q/( ...

Page 17

... Dimensions in inches (millimeters) unless otherwise noted. N8 Package 8-Lead PDIP (Narrow 0.300) (LTC DWG # 05-08-1510) 8 0.255 0.015* (6.477 0.381) 1 0.045 – 0.065 (1.143 – 1.651) 0.065 (1.651) TYP 0.100 0.010 (2.540 0.254) LT1366/LT1367 LT1368/LT1369 0.400* (10.160) MAX 0.130 0.005 (3.302 0.127) 0.125 0.020 (3 ...

Page 18

... LT1366/LT1367 LT1368/LT1369 PACKAGE DESCRIPTION 0.010 – 0.020 (0.254 – 0.508) 0.008 – 0.010 (0.203 – 0.254) 0.016 – 0.050 0.406 – 1.270 * DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE ** DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" ...

Page 19

... DWG # 05-08-1610 0.228 – 0.244 (5.791 – 6.197 0.053 – 0.069 (1.346 – 1.752) 0 – 8 TYP 0.014 – 0.019 (0.355 – 0.483) LT1366/LT1367 LT1368/LT1369 0.337 – 0.344* (8.560 – 8.738 0.150 – 0.157** (3.810 – 3.988 0.004 – ...

Page 20

... R F – 102k 1/4 10k LT1367 A1D + COMMENTS Input/Output Common Mode Includes Ground and 2 Drift (Max), 200kHz GBW, 0.07V/ s Slew Rate High DC Accuracy GBW, 1V/ s Slew Rate, Supply Current 2.2mA (Max), Single Supply, Can Be Configured for C-Load Input/Output Common Mode Includes Ground and Drift (Max), 85kHz GBW, 0 ...

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