Datasheet

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LT1632/LT1633

sn1632 16323fs

45MHz, 45V/µs, Dual/Quad

Rail-to-Rail Input and Output

Precision Op Amps

FEATURES

■

Gain-Bandwidth Product: 45MHz

■

Slew Rate: 45V/µs

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Low Supply Current per Amplifier: 4.3mA

■

Input Common Mode Range Includes Both Rails

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Output Swings Rail-to-Rail

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Input Offset Voltage, Rail-to-Rail: 1350µV Max

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Input Offset Current: 440nA Max

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Input Bias Current: 2.2µA Max

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Open-Loop Gain: 800V/mV Min

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Low Input Noise Voltage: 12nV/√Hz Typ

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Low Distortion: –92dBc at 100kHz

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Wide Supply Range: 2.7V to ±15V

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Large Output Drive Current: 35mA Min

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Dual in 8-Pin PDIP and SO Packages

The LT

1632/LT1633 are dual/quad, rail-to-rail input and

output op amps with a 45MHz gain-bandwidth product and

a 45V/µs slew rate.

The LT1632/LT1633 have excellent DC precision over the

full range of operation. Input offset voltage is typically less

than 400µV and the minimum open-loop gain of 0.8

million into a 10k load virtually eliminates all gain error.

Common mode rejection is typically 83dB over the full rail-

to-rail input range when on a single 5V supply for excellent

noninverting performance.

The LT1632/LT1633 maintain their performance for sup-

plies from 2.7V to 36V and are specified at 3V, 5V and ±15V

supplies. The inputs can be driven beyond the supplies

without damage or phase reversal of the output. The

output delivers load currents in excess of 35mA.

The LT1632 is available in 8-pin PDIP and SO packages

with the standard dual op amp pinout. The LT1633 features

the standard quad op amp configuration and is available in

a 14-pin plastic SO package. These devices can be used as

plug-in replacements for many standard op amps to

improve input/output range and performance.

DESCRIPTION

APPLICATIONS

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Active Filters

■

Rail-to-Rail Buffer Amplifiers

■

Driving A/D Converters

■

Low Voltage Signal Processing

■

Battery-Powered Systems

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

FREQUENCY (Hz)

VOLTAGE GAIN (dB)

–10

–20

–30

–40

–50

–60

–70

100 10k 100k 10M

1632/33 TA02

1k 1M

COMMON MODE INPUT

DIFFERENTIAL INPUT

= 3V

= 100

TYPICAL APPLICATION

Single Supply, 40dB Gain, 550kHz Instrumentation Amplifier

–

1/2 LT1632

–

OUT

1630/31 F02

20k

432Ω

–

1/2 LT1632

Frequency Response

Downloaded from Arrow.com.

Summary of content (16 pages)

PAGE 1
LT1632/LT1633 45MHz, 45V/µs, Dual/Quad Rail-to-Rail Input and Output Precision Op Amps U FEATURES ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ DESCRIPTION Gain-Bandwidth Product: 45MHz Slew Rate: 45V/µs Low Supply Current per Amplifier: 4.3mA Input Common Mode Range Includes Both Rails Output Swings Rail-to-Rail Input Offset Voltage, Rail-to-Rail: 1350µV Max Input Offset Current: 440nA Max Input Bias Current: 2.
PAGE 2
LT1632/LT1633 W W U W ABSOLUTE MAXIMUM RATINGS (Note 1) Total Supply Voltage (V + to V –) ............................. 36V Input Current ..................................................... ±10mA Output Short-Circuit Duration (Note 2) ........ Continuous Operating Temperature Range ................ – 40°C to 85°C Specified Temperature Range (Note 4) ..... – 40°C to 85°C Junction Temperature .......................................... 150°C Storage Temperature Range .................
PAGE 3
LT1632/LT1633 ELECTRICAL CHARACTERISTICS TA = 25°C, VS = 5V, 0V; VS = 3V, 0V; VCM = VOUT = half supply, unless otherwise noted. SYMBOL PARAMETER CONDITIONS = V– to V + MIN TYP MAX UNITS CMRR Match (Channel-to-Channel) (Note 5) VS = 5V, VCM VS = 3V, VCM = V – to V + 65 61 85 82 dB dB Power Supply Rejection Ratio VS = 2.7V to 12V, VCM = VO = 0.5V 82 100 dB PSRR Match (Channel-to-Channel) (Note 5) VS = 2.7V to 12V, VCM = VO = 0.5V 79 101 Minimum Supply Voltage (Note 9) VCM = VO = 0.5V 2.
PAGE 4
LT1632/LT1633 ELECTRICAL CHARACTERISTICS 0°C < TA < 70°C, VS = 5V, 0V; VS = 3V, 0V; VCM = VOUT = half supply, unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS V Minimum Supply Voltage (Note 9) VCM = VO = 0.5V ● 2.6 2.7 VOL Output Voltage Swing Low (Note 6) No Load ISINK = 0.5mA ISINK = 25mA, VS = 5V ISINK = 20mA, VS = 3V ● ● ● ● 18 37 700 560 40 80 1400 1200 mV mV mV mV VOH Output Voltage Swing High (Note 6) No Load ISOURCE = 0.
PAGE 5
LT1632/LT1633 ELECTRICAL CHARACTERISTICS – 40°C < TA < 85°C, VS = 5V, 0V; VS = 3V, 0V; VCM = VOUT = half supply, unless otherwise noted. (Note 4) SYMBOL PARAMETER CONDITIONS MIN VOH Output Voltage Swing High (Note 6) No Load ISOURCE = 0.5mA ISOURCE = 15mA, VS = 5V ISOURCE = 10mA, VS = 3V ● ● ● ● ISC Short-Circuit Current VS = 5V VS = 3V ● ● IS Supply Current per Amplifier ±17 ±12 TYP MAX UNITS 16 55 860 580 40 110 1700 1200 mV mV mV mV ±36 ±24 4.95 ● mA mA 6.
PAGE 6
LT1632/LT1633 ELECTRICAL CHARACTERISTICS TA = 25°C, VS = ±15V, VCM = 0V, VOUT = 0V, unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP ±35 ±70 MAX UNITS ISC Short-Circuit Current IS Supply Current per Amplifier GBW Gain-Bandwidth Product (Note 7) f = 100kHz 22 45 MHz SR Slew Rate AV = – 1, RL = Open, VO = ±10V, Measure at VO = ±5V 22 45 V/µs tS Settling Time 0.01%, VSTEP = 10V, AV = 1, RL = 1k 575 ns 4.
PAGE 7
LT1632/LT1633 ELECTRICAL CHARACTERISTICS – 40°C < TA < 85°C, VS = ±15V, VCM = 0V, VOUT = 0V, unless otherwise noted. (Note 4) SYMBOL PARAMETER VOS Input Offset Voltage VOS TC Input Offset Voltage Drift (Note 3) ∆VOS Input Offset Voltage Shift CONDITIONS MIN = V+ TYP MAX UNITS µV µV VCM – 0.1V VCM = V – + 0.2V ● ● 1000 1000 3000 3000 VCM = V + – 0.1V ● ● 10 5 17 11 VCM = V – + 0.2V to V + – 0.1V ● 500 2600 µV ● 850 4000 µV 1.4 – 1.4 2.8 0 µA µA = V – + 0.2V, V + – 0.
PAGE 8
LT1632/LT1633 U W TYPICAL PERFORMANCE CHARACTERISTICS VOS Distribution, VCM = 0V (PNP Stage) VOS Distribution, VCM = 5V (NPN Stage) 50 50 VS = 5V, 0V VCM = 0V VS = 5V, 0V VCM = 5V VS = 5V, 0V 30 20 10 40 PERCENT OF UNITS (%) 40 PERCENT OF UNITS (%) 40 30 20 10 0 –1250 –750 250 750 –250 INPUT OFFSET VOLTAGE (µV) 0 –1250 1250 –750 250 750 –250 INPUT OFFSET VOLTAGE (µV) 1632/33 G31 SUPPLY CURRENT PER AMPLIFIER (mA) TA = 25°C 4.5 4.0 3.5 TA = –55°C 3.0 2.5 2.
PAGE 9
LT1632/LT1633 U W TYPICAL PERFORMANCE CHARACTERISTICS Minimum Supply Voltage 20 VS = 5V, 0V 400 300 TA = 25°C 200 TA = 125°C TA = –55°C 50 40 VCM = 4.25V NPN ACTIVE 30 20 100 VCM = 2.
PAGE 10
LT1632/LT1633 U W TYPICAL PERFORMANCE CHARACTERISTICS VS = 5V, 0V AV = 1 RL = 1k VOUT = 80% OF VS AV = –1 50 60 50 45 RISING EDGE 40 FALLING EDGE 35 30 NONINVERTING 4 25 0 –2 –4 NONINVERTING 0 1000 4 8 12 16 20 24 28 32 TOTAL SUPPLY VOLTAGE (V) Open-Loop Gain Open-Loop Gain RL = 10k –5 15 150 10 100 5 RL = 10k 0 –5 –10 –10 –15 –15 15 RL = 1k 1 2 4 3 OUTPUT VOLTAGE (V) –300 LT1633CS, VS = ±15V –400 5 40 60 80 100 120 140 160 TIME AFTER POWER-UP (SEC) 1632/33 G22 1 0.
PAGE 11
LT1632/LT1633 U W TYPICAL PERFORMANCE CHARACTERISTICS Harmonic Distortion vs Frequency 5V Small-Signal Response 5V Large-Signal Response HARMONIC DISTORTION (dBc) 0 –20 VS = 5V, 0V AV = 1 VIN = 2VP-P RL = 150Ω RL = 1k –40 3RD –60 2ND –80 VS = 5V, 0V AV = 1 RL = 1k 3RD –100 100 2ND 200 1000 500 FREQUENCY (kHz) 163233 G25 VS = 5V, 0V AV = 1 RL = 1k 1632/33 G26 2000 1632/33 G29 ±15V Small-Signal Response Harmonic Distortion vs Frequency ±15V Large-Signal Response HARMONIC DISTORTION (dBc)
PAGE 12
LT1632/LT1633 U U W U APPLICATIONS INFORMATION V+ R3 + IN + R6 225Ω I1 R4 Q12 Q11 R5 D1 R7 – IN 225Ω D6 D8 D5 D7 Q15 Q13 + D2 Q5 I2 VBIAS V– Q4 Q3 Q1 C2 CC OUT Q2 D3 Q9 Q8 D4 Q7 BUFFER AND OUTPUT BIAS C1 Q6 R1 V– R2 Q14 1632/33 F01 Figure 1. LT1632 Simplified Schematic Diagram amplifiers operate over a very wide supply range, it is possible to exceed the maximum junction temperature of 150°C in plastic packages under certain conditions.
PAGE 13
LT1632/LT1633 U W U U APPLICATIONS INFORMATION They flow in the opposite direction when the NPN input stage is active. The offset voltage error due to input bias currents can be minimized by equalizing the noninverting and inverting input source impedance. Output The outputs of the LT1632/LT1633 can deliver large load currents; the short-circuit current limit is 70mA. Take care to keep the junction temperature of the IC below the absolute maximum rating of 150°C (refer to the Power Dissipation section).
PAGE 14
LT1632/LT1633 U TYPICAL APPLICATIONS R4  R2 R3 + R2  1+ AV = + R3  R1 R5  −  + VOUT =  VIN − VIN  • AV   10 0 –10 GAIN (dB) –20 Common mode range can be calculated by the following equations: –30 –40 –50 –60 –70 VS = 3V, 0V VIN = 2.5VP-P –80 Lower limit common mode input voltage  V  R2  1.0 + 0.1V VCML =  OUT   AV  R5  1.1 Upper limit common mode input voltage  V  R2  1.0 + VS − 0.15V  VCMH =  OUT   AV  R5  1.1 where VS is supply voltage. ( –90 0.
PAGE 15
LT1632/LT1633 U TYPICAL APPLICATIONS temperature range. The op amp A1 combined with Q1, Q2, R1, R2 and R3 establishes two current sources of 21.5mA to bias RF1 and RF2 amplifiers. The current of Q1, is determined by the voltage across R2 over R1, which is then replicated in Q2. These current sources are stable and precise over temperature and have a low dissipated power U PACKAGE DESCRIPTION due to a low voltage drop between their terminals.
PAGE 16
LT1632/LT1633 U TYPICAL APPLICATION Tunable Q Notch Filter A single supply, tunable Q notch filter as shown in Figure 5 is built with LT1632 to maximize the output swing. The filter has a gain of 2, and the notch frequency (fO) is set by the values of R and C. The resistors R10 and R11 set up the DC level at the output. The Q factor can be adjusted by varying the value of R8. The higher value of R8 will decrease Q as depicted in Figure 6, because the output induces less of feedback to amplifier A2.