Datasheet

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LT1001

1001fb

TYPICAL APPLICATIO

APPLICATIO S

DESCRIPTIO

FEATURES

Precision Operational

Amplifier

■

Guaranteed

Low Offset Voltage

LT1001AM 15µV max

LT1001C 60µV max

■

Guaranteed

Low Drift

LT1001AM 0.6µV/°C max

LT1001C 1.0µV/°C max

■

Guaranteed

Low Bias Current

LT1001AM 2nA max

LT1001C 4nA max

■

Guaranteed

CMRR

LT1001AM 114dB min

LT1001C 110dB min

■

Guaranteed

PSRR

LT1001AM 110dB min

LT1001C 106dB min

■

Low Power Dissipation

LT1001AM 75mW max

LT1001C 80mW max

■

Low Noise 0.3µV

P-P

The LT

1001 significantly advances the state-of-the-

art of precision operational amplifiers. In the design,

processing, and testing of the device, particular atten-

tion has been paid to the optimization of the entire

distribution of several key parameters. Consequently,

the specifications of the lowest cost, commercial tem-

perature device, the LT1001C, have been dramatically

improved when compared to equivalent grades of com-

peting precision amplifiers.

Essentially, the input offset voltage of all units is less

than 50µV (see distribution plot below). This allows the

LT1001AM/883 to be specified at 15µV. Input bias and

offset currents, common-mode and power supply re-

jection of the LT1001C offer guaranteed performance

which were previously attainable only with expensive,

selected grades of other devices. Power dissipation is

nearly halved compared to the most popular precision

op amps, without adversely affecting noise or speed

performance. A beneficial by-product of lower dissipa-

tion is decreased warm-up drift. Output drive capability

of the LT1001 is also enhanced with voltage gain

guaranteed at 10mA of load current. For similar perfor-

mance in a dual precision op amp, with guaranteed

matching specifications, see the LT1002. Shown below

is a platinum resistance thermometer application.

■

Thermocouple amplifiers

■

Strain gauge amplifiers

■

Low level signal processing

■

High accuracy data acquisition

INPUT OFFSET VOLTAGE (µV)

–60

NUMBER OF UNITS

200

150

100

1001 TA02

–40

–20

40 60

954 UNITS

FROM THREE RUNS

Typical Distribution

of Offset Voltage

= ±15V, T

= 25°C

Linearized Platinum Resistance Thermometer

with ±0.025°C Accuracy Over 0 to 100°C

–

LT1001

–

LT1001

R plat.

†

1k = 0°C

10k*

1.2k**

LM129

+15

200Ω

1001 TA01

LINEARITY

TRIM

GAIN

TRIM

OUTPUT

0 TO 10V =

0 TO 100°C

1µf

10k*

* ULTRONIX 105A WIREWOUND

** 1% FILM

†

PLATINUM RTD

118MF (ROSEMOUNT, INC.)

‡

Trim sequence: trim offset (0°C = 1000.0Ω),

trim linearity (35°C = 1138.7Ω), trim gain

(100°C = 1392.6Ω). Repeat until all three

points are fixed with ±0.025°C.

90k*

20k

OFFSET TRIM

20k

330k*

1MEG.**

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

Summary of content (16 pages)

PAGE 1
LT1001 Precision Operational Amplifier DESCRIPTIO U FEATURES ■ ■ ■ ■ ■ ■ ■ The LT ®1001 significantly advances the state-of-theart of precision operational amplifiers. In the design, processing, and testing of the device, particular attention has been paid to the optimization of the entire distribution of several key parameters.
PAGE 2
LT1001 W W U W ABSOLUTE MAXIMUM RATINGS (Note 1) Supply Voltage ...................................................... ±22V Differential Input Voltage ...................................... ±30V Input Voltage ........................................................ ±22V Output Short Circuit Duration ......................... Indefinite Operating Temperature Range LT1001AM/LT1001M (OBSOLETE) .. – 55°C to 150°C LT1001AC/LT1001C .............................. 0°C to 125°C Storage: All Devices.............
PAGE 3
LT1001 ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VS = ±15V, TA = 25°C, unless otherwise noted SYMBOL PARAMETER Input Voltage Range CONDITIONS LT1001AM/883 LT1001AC MIN TYP MAX ±13 ±14 VOUT Maximum Output Voltage Swing RL ≥ 2kΩ RL ≥ 1kΩ ±13 ±12 SR Slew Rate RL ≥ 2kΩ (Note 5) 0.1 0.25 GBW Gain-Bandwidth Product (Note 5) 0.4 0.
PAGE 4
LT1001 U W TYPICAL PERFORMANCE CHARACTERISTICS Typical Distribution of Offset Voltage Drift with Temperature Offset Voltage Drift withTemperature of Representative Units OFFSET VOLTAGE (µV) 60 40 LT1001 VS = ±15V 30 20 CHANGE IN OFFSET VOLTAGE (µV) 40 265 UNITS TESTED 80 NUMBER OF UNITS Warm-Up Drift 50 100 LT1001A 10 0 LT1001A –10 –20 20 LT1001 –30 VS = ±15V TA = 25°C 4 3 METAL CAN (H) PACKAGE 2 DUAL-IN-LINE PACKAGE PLASTIC (N) OR CERDIP (J) 1 –40 –50 –50 –0.6 –0.2 0 +0.2 +0.
PAGE 5
LT1001 U W TYPICAL PERFORMANCE CHARACTERISTICS Open Loop Voltage Gain Frequency Response Gain, Phase Shift vs Frequency VS = ±15V, VO = ±12V 800k VS = ±3V, VO = ±1V 600k 400k 200k 120 16 TA = 25°C 100 80 VOLTAGE GAIN (dB) 1000k OPEN LOOP VOLTAGE GAIN (dB) OPEN LOOP VOLTAGE GAIN (V/V) 140 1200k VS = ±15V 60 40 VS = ±3V 20 50 25 75 0 TEMPERATURE (°C) 100 –20 0.1 125 1 10 100 1k 10k 100k 1M 10M FREQUENCY (Hz) V + = 12 to 18V V – = –12 to –18V V – = –1.
PAGE 6
LT1001 U W TYPICAL PERFORMANCE CHARACTERISTICS Voltage Follower Overshoot vs Capacitive Load Small Signal Transient Response 100 VS = ±15V TA = 25°C VIN = 100mV RL > 50k 80 PERCENT OVERSHOOT Small Signal Transient Response 60 40 20 0 100 AV = +1, CL = 50pF 10,000 1000 CAPACITIVE LOAD (pF) 100,000 AV = +1, CL = 1000pF 1001 G19 1001 G21 1001 G20 Maximum Undistorted Output vs.
PAGE 7
LT1001 U U W U APPLICATIONS INFORMATION Offset Voltage Adjustment The input offset voltage of the LT1001, and its drift with temperature, are permanently trimmed at wafer test to a low level. However, if further adjustment of Vos is necessary, nulling with a 10k or 20k potentiometer will not degrade drift with temperature. Trimming to a value other than zero creates a drift of (Vos/300)µV/°C, e.g., if Vos is adjusted to 300 µV, the change in drift will be 1 µV/°C.
PAGE 8
LT1001 U TYPICAL APPLICATIONS Photodiode Amplifier Microvolt Comparator with TTL Output 100pF 5V 39.2Ω 1% 1.21M 1% NON INVERTING INPUT 2 INVERTING INPUT 3 7 – 5k 5% 4.99k 1% 8 500k 1% OUTPUT 2 LT1001 + 20k 5% 4 λ 2N3904 6 LT1001 3 IN914 –5V POSITIVE FEEDBACK TO ONE OF THE NULLING TERMINALS CREATES 5µ TO 20µV OF HYSTERESIS. INPUT OFFSET VOLTAGE IS TYPICALLY CHANGED BY LESS THAN 5µV DUE TO THE FEEDBACK.
PAGE 9
LT1001 U TYPICAL APPLICATIONS rejections. Worst-case summation of guaranteed specifications is tabulated below. Large Signal Voltage Follower With 0.001% Worst Case Accuracy OUTPUT ACCURACY 12V TO 18V 2 INPUT –10V TO 10V RS 0k TO 10k LT1001 3 LT1001AM /883 LT1001C LT1001AM /883 LT1001C Error 25°C Max. 25°C Max. –55 to 125°C Max. 0 to 70°C Max.
PAGE 10
LT1001 U TYPICAL APPLICATIONS Precision Power Supply with Two Outputs (1) 0V to 10V in 100µV STEPS (2) 0V to 100V in 1mV STEPS 22k* 43k* 100Ω (SELECT) 2 15V 100Ω 5W – 2k LT1001 15V 3 2N2219 6 + IN914 OUTPUT 1 0V-10V 25mA 8.2k TRIAD TY-90 VN-46 LM399 DIODES = SEMTECH # FF-15 KVD 00000 – 99999 + 1 VN-46 KELVIN-VARLEY DIVIDER ESI#DP311 –15V 4µF 10k* (SELECT) + 680pF TRIM–100V 100Ω 2.2µF – D CLK 6 LT301A 3 90k* 0.1µF *JULIE RSCH.
PAGE 11
LT1001 U TYPICAL APPLICATIONS Instrumentation Amplifier with ±300V Common Mode Range and CMRR > 150dB 15V 820Ω 820Ω 3 + 10k 6 LT1001 2 – OUTPUT + 330k* 0.1µF S1 S3 1µF** INPUT 0.2µF** 909Ω* S2 200Ω GAIN TRIM S4 (ACQUIRE) (READ) 01 02 OUT OUT A 74C906 IN IN 74C04 2k* 74C86 2k* 1 C 4022 EN 2 6 CLK R 10k 1k + 3 – 2 LM301A 5.6k* R1 0.1µF 1k LM329 1) ALL DIODES IN4148 2) S1–S4 OPTO MOS SWITCH OFM-1A, THETA-J CORP.
PAGE 12
LT1001 W W SCHE ATIC DIAGRA V+ 7 6k 6k 8 1 40k Q29 Q27 40k Q25 Q13 Q11 Q5 Q24 Q28 Q14 1.
PAGE 13
LT1001 U PACKAGE DESCRIPTION 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 14
LT1001 U PACKAGE DESCRIPTION J8 Package 8-Lead CERDIP (Narrow .300 Inch, Hermetic) (Reference LTC DWG # 05-08-1110) CORNER LEADS OPTION (4 PLCS) 0.023 – 0.045 (0.584 – 1.143) HALF LEAD OPTION 0.045 – 0.068 (1.143 – 1.727) FULL LEAD OPTION 0.005 (0.127) MIN 0.405 (10.287) MAX 8 7 6 5 0.025 (0.635) RAD TYP 0.220 – 0.310 (5.588 – 7.874) 1 0.300 BSC (0.762 BSC) 2 3 4 0.200 (5.080) MAX 0.015 – 0.060 (0.381 – 1.524) 0.008 – 0.018 (0.203 – 0.
PAGE 15
LT1001 U PACKAGE DESCRIPTION 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) 0.009 – 0.015 (0.229 – 0.381) ( +0.035 0.325 –0.015 8.255 +0.889 –0.381 ) 0.045 – 0.065 (1.143 – 1.651) 0.130 ± 0.005 (3.302 ± 0.127) 0.065 (1.651) TYP 0.100 (2.54) BSC 0.125 (3.175) 0.020 MIN (0.508) MIN 0.018 ± 0.003 (0.457 ± 0.
PAGE 16
LT1001 U PACKAGE DESCRIPTION S8 Package 8-Lead Plastic Small Outline (Narrow .150 Inch) (Reference LTC DWG # 05-08-1610) 0.189 – 0.197* (4.801 – 5.004) 8 7 6 5 0.150 – 0.157** (3.810 – 3.988) 0.228 – 0.244 (5.791 – 6.197) SO8 1298 1 0.010 – 0.020 × 45° (0.254 – 0.508) 0.008 – 0.010 (0.203 – 0.254) 0.053 – 0.069 (1.346 – 1.752) 0°– 8° TYP 0.016 – 0.050 (0.406 – 1.270) 0.014 – 0.019 (0.355 – 0.483) TYP *DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.