Datasheet

ManualsBrandsLINEAR TECHNOLOGY ManualsLinear ICsLinear IC - Op-amp J-FET PDIP 8

LT1022

1022fa

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Guaranteed

Slew Rate: 23V/µs Min

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Guaranteed

Offset Voltage: 250µV Max

– 55°C to 125°C: 750µV Max

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Guaranteed

Drift: 5µV/°C Max

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Guaranteed

Bias Current:

70°C, 180pA Max

125°C, 4nA Max

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Gain-Bandwidth Product: 8.5MHz Typ

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Settling Time to 0.05% (10V Step): 0.9µs Typ

The LT

1022 JFET input operational amplifier combines

high speed and precision performance.

A 26V/µs slew rate and 8.5MHz gain-bandwidth product

are simultaneously achieved with offset voltage of

typically 80µV, 1.5µV/°C drift, bias currents of 50pA at

70°C, 500pA at 125°C. The output delivers 20mA of load

current without gain degradation.

The 250µV maximum offset voltage specification

represents less than 1/2 least significant bit error in a

14-bit, 10V system.

The LT1022A meets or exceeds all OP-16A and OP-16E

specifications. It is faster and more accurate without

stability problems at cold temperatures.

The LT1022 can be used as the output amplifier for 12-bit

current output D/A converters, as shown below.

For a more accurate, lower power dissipation, but slower

JFET input op amp, please refer to the LT1055 data sheet.

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Fast D/A Output Amplifiers (12, 14, 16 Bits)

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High Speed Instrumentation

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Fast, Precision Sample and Hold

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Voltage-to-Frequency Converters

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Logarithmic Amplifiers

12-Bit Voltage Output D/A Converter

High Speed, Precision

JFET Input Operational Amplifier

Large-Signal Response

FEATURES

DESCRIPTIO

APPLICATIO S

= 15pF TO 33pF

SETTLING TIME TO 2mV (0.8 LSB) = 1.5µs TO 2µs

LT1022 • TA01

–

LT1022

–15V

15V

12-BIT CURRENT OUTPUT D/A

CONVERTER (e.g., 6012, 565 OR DAC-80)

0mA TO 2mA

OR 4mA

OUTPUT

0V TO 10V

0.5µs/DIV

5V/DIV

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

TYPICAL APPLICATIO

= 1

= 100pF

= 25°C

= ±15V

Summary of content (12 pages)

PAGE 1
LT1022 High Speed, Precision JFET Input Operational Amplifier U FEATURES ■ ■ ■ ■ ■ ■ DESCRIPTIO Guaranteed Slew Rate: 23V/µs Min Guaranteed Offset Voltage: 250µV Max – 55°C to 125°C: 750µV Max Guaranteed Drift: 5µV/°C Max Guaranteed Bias Current: 70°C, 180pA Max 125°C, 4nA Max Gain-Bandwidth Product: 8.5MHz Typ Settling Time to 0.05% (10V Step): 0.9µs Typ U APPLICATIO S ■ ■ ■ ■ ■ The LT®1022 JFET input operational amplifier combines high speed and precision performance. A 26V/µs slew rate and 8.
PAGE 2
LT1022 W W W AXI U U ABSOLUTE RATI GS (Note 1) Supply Voltage ...................................................... ±20V Differential Input Voltage ....................................... ±40V Input Voltage ......................................................... ±20V Output Short Circuit Duration .......................... Indefinite Operating Temperature Range LT1022AM/1022M (OBSOLETE).........–55°C to 125°C LT1022AC/1022C ....................................
PAGE 3
LT1022 ELECTRICAL CHARACTERISTICS SYMBOL PARAMETER CONDITIONS GBW Gain-Bandwidth Product f = 1MHz IS Supply Current Settling Time Offset Voltage Adjustment Range VS = ± 15V, TA = 25°C, VCM = 0V unless otherwise noted. MIN LT1022AM LT1022AC TYP MAX LT1022M, LT1022CH LT1022CN8 MIN TYP MAX 8.5 5.2 UNITS 8.0 7.0 MHz 5.2 7.0 mA A = +1 or A = –1 10V Step to 0.05% 10V Step to 0.02% 0.9 1.3 0.9 1.
PAGE 4
LT1022 U W TYPICAL PERFOR A CE CHARACTERISTICS 120 100 20 120 GAIN (dB) GAIN (dB) TA = 25°C 80 60 40 TA = –55°C CL = 10pF 10 GAIN PHASE 1 10 100 1k 10k 100k 1M 10M 100M FREQUENCY (Hz) 180 CL = 300pF VS = ±15V TA = 25°C CL = 300pF 0 –20 140 160 0 20 100 –10 1 3 200 220 CL = 10pF 10 30 FREQUENCY (MHz) LT1022 • TPC01 240 100 30 12 SLEW 11 20 10 9 GBW (f = 1MHz) 8 60 7 50 6 θM 40 –50 –25 50 25 0 75 TEMPERATURE (°C) 100 125 LT1022 • TPC03 Small-Signal Response Settl
PAGE 5
LT1022 U W U U APPLICATIO S I FOR ATIO The LT1056 applications information is directly applicable to the LT1022.
PAGE 6
LT1022 U TYPICAL APPLICATIO S 10Hz to 1MHz Voltage-to-Frequency Converter 100pF (POLYSTYRENE) 1.8k 15V 15V 2N2222 2N2222 INPUT 0V TO 10V 5k 2 22.1k (METAL FILM) 1000pF 1.8k 3 + 7 – 2N2222 1.8k 4.7k 4 1 6 LT1022 3 + –15V 4 15V 1k 100k LT1009 200k 8 + 1 0.1µF LT1011 – –15V 1.8k 2 7 4 = 1N4148 TTL OUTPUT 8 –15V 1k 10k 20k 15V 2 LT1011 15V 7 – 1.8k 10pF 100k –15V 1.
PAGE 7
LT1022 U TYPICAL APPLICATIO S PIN Photodiode-to-Frequency Converter 5pF FULL-SCALE TRIM 15V 47pF*† 1.8k 15V 2N2222 2N2222 1000pF† 1.8k 4.7k LM329 2 3 TTL OUTPUT 20Hz ← 2MHz 8 + 7 – 2N2222 1.8k 4.7k 4 1 6 LT1022 10M 3 LIGHT INPUT + –15V 4 100k –15V –15V 15V 3.3M 200k LT1004 2.5V 8 + 1k 1k 0.1µF LT1011 1 1.8k 2 7 – 10k DARK CURRENT TRIM 2 10k 20k 15V LT1011 15V 7 – 1.8k 2pF 100k –15V 1.
PAGE 8
LT1022 U TYPICAL APPLICATIO S Wide Bandwidth Absolute Value Circuit 10k* 10k* 10k* 10pF 10pF 15V 10k* INPUT ±10V 2 – LT1022 3 1N4148 7 15V 2 4 6 LT1022 3 + 7 – 6 + 4 1N4148 –15V OUTPUT 0V TO 10V –15V *0.1% 1% ACCURACY TO 300kHz 5% ACCURACY TO 700kHz 10k* LT1022 • TA06 Fast, Differential Input Current Source 15V VIN1 VIN2 R* R* 2 – LT1022 3 + 10pF 7 4 –15V R* IOUT = 6 VIN2 – VIN1 R R* IOUT RL *MATCH TO 0.
PAGE 9
LT1022 U TYPICAL APPLICATIO S High Output Current Op Amp 15V RS 2 15V – 6 LT1022 3 + 10k CF 7 OUTPUT LT1010 4 –15V –15V SLEW RATE = 26V/µs IOUT = 150mA CL CAN BE 1µF AV = +1, CF = 1000pF AV = –1, CF = 10pF LT1022 • TA08 Low Distortion Sine Wave Oscillator 15V # 327 LAMP 2 – † 430Ω 7 6 LT1022 0.033µF 3 + 4 OUTPUT 0.033µF† –15V 10k 953Ω* 953Ω* 10k * 1% FILM 10k DUAL POTENTIOMETER — MATCH TRACKING TO 0.1% † MATCH CAPACITORS TO 0.1% 5kHz TO 50kHz RANGE DISTORTION < 0.
PAGE 10
LT1022 U TYPICAL APPLICATIO S Fast, Precision Sample-And-Hold 1k 330pF – LT1022 SAMPLE-AND-HOLD SIGNAL PATH 2N4393 LT1010 + INPUT 2k – LEVEL SHIFT 15V LT1022 39pF HP5082-2810 3k 1N4148 2N2907 2N2222 TTL INPUT 1000pF POLYSTYRENE 1k 2N2369 470Ω OUTPUT + 1.5k 4.7k* 1000pF 2N2369 20k 1N4148 –15V 0.1µF 820Ω HOLD STEP COMPENSATION 10k 820Ω 15pF –15V 20pF 13k 5.1k – HP5082-2810 LT318A 2N2222 16ns APERTURE TIME 2µs ACQUISITION TIME TO 0.
PAGE 11
LT1022 U PACKAGE DESCRIPTIO H Package 8-Lead TO-5 Metal Can (.200 Inch PCD) (Reference LTC DWG # 05-08-1320) 0.335 – 0.370 (8.509 – 9.398) DIA 0.305 – 0.335 (7.747 – 8.509) 0.040 (1.016) MAX 0.050 (1.270) MAX SEATING PLANE 0.165 – 0.185 (4.191 – 4.699) GAUGE PLANE 0.010 – 0.045* (0.254 – 1.143) REFERENCE PLANE 0.500 – 0.750 (12.700 – 19.050) 0.016 – 0.021** (0.406 – 0.533) 0.027 – 0.045 (0.686 – 1.143) PIN 1 45°TYP 0.028 – 0.034 (0.711 – 0.864) 0.200 (5.080) TYP 0.110 – 0.160 (2.794 – 4.
PAGE 12
LT1022 U PACKAGE DESCRIPTIO N8 Package 8-Lead PDIP (Narrow .300 Inch) (Reference LTC DWG # 05-08-1510) 0.400* (10.160) MAX 8 7 6 5 1 2 3 4 0.255 ± 0.015* (6.477 ± 0.381) 0.300 – 0.325 (7.620 – 8.255) 0.045 – 0.065 (1.143 – 1.651) 0.065 (1.651) TYP 0.009 – 0.015 (0.229 – 0.381) +0.035 0.325 –0.015 ( 8.255 +0.889 –0.381 0.130 ± 0.005 (3.302 ± 0.127) 0.100 (2.54) BSC ) 0.125 (3.175) 0.020 MIN (0.508) MIN 0.018 ± 0.003 (0.457 ± 0.