Datasheet

ManualsBrandsSTMICROELECTRONICS ManualsLinear ICsLinear IC - Op-amp J-FET SO 8

March 2010 Doc ID 2153 Rev 3 1/15

LF253, LF353

Wide bandwidth dual JFET operational amplifiers

Features

■ Low power consumption

■ Wide common-mode (up to V

) and

differential voltage range

■ Low input bias and offset current

■ Output short-circuit protection

■ High input impedance JFET input stage

■ Internal frequency compensation

■ Latch up free operation

■ High slew rate 16 V/µs (typical)

Description

These circuits are high speed JFET input dual

operational amplifiers incorporating well matched,

high voltage JFET and bipolar transistors in a

monolithic integrated circuit.

The devices feature high slew rates, low input

bias and offset currents, and low offset voltage

temperature coefficient.

DIP8

(Plastic package)

SO-8

(Plastic micro package)

Pin connections

(top view)

1 - Output1

2 - Inverting input 1

3 - Non-inverting input 1

4 - V

5 - Non-inverting input 2

6 - Inverting input 2

7 - Output 2

8 - V

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Summary of content (15 pages)

PAGE 1
LF253, LF353 Wide bandwidth dual JFET operational amplifiers Features ■ Low power consumption ■ Wide common-mode (up to VCC+) and differential voltage range ■ Low input bias and offset current ■ Output short-circuit protection ■ High input impedance JFET input stage ■ Internal frequency compensation ■ Latch up free operation ■ High slew rate 16 V/µs (typical) N DIP8 (Plastic package) D SO-8 (Plastic micro package) Description These circuits are high speed JFET input dual operational amplif
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Schematics LF253, LF353 1 Schematics Figure 1. Schematic diagram (each amplifier) VCC+ Non-inverting input Inverting input 100 Ω 200 Ω Output 100 Ω 30 k 8.2 k 1.3 k 35 k 1.
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LF253, LF353 Absolute maximum ratings and operating conditions 2 Absolute maximum ratings and operating conditions Table 1.
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Electrical characteristics LF253, LF353 3 Electrical characteristics Table 3. Electrical characteristics at VCC = ±15 V, Tamb = +25°C (unless otherwise specified) Symbol Parameter Min. Typ. Max.
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LF253, LF353 Figure 2. Electrical characteristics Maximum peak-to-peak output voltage vs. frequency, RL = 2 kΩ VCC = +/- 15 V Figure 3. Maximum peak-to-peak output voltage vs. frequency, RL = 10 kΩ RL = 10 kΩ RL = 2 kΩ VCC = +/- 10 V VCC = +/- 10 V VCC = +/- 5 V VCC = +/- 5 V Figure 4. Maximum peak-to-peak output voltage versus frequency Tamb = +25°C Tamb = +25°C VCC = +/- 15 V Tamb = +25°C Figure 5.
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Electrical characteristics Figure 8. LF253, LF353 Input bias current versus free air temperature Figure 9. Large signal differential voltage amplification versus free air temp. VCC = +/- 15 V VCC = +/- 15 V VO = +/- 10 V RL = 2 kΩ Figure 10. Large signal differential voltage amplification and phase shift versus frequency Phase shift (right scale) Figure 11.
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LF253, LF353 Electrical characteristics Figure 14. Common mode rejection ratio versus free air temperature Figure 15. Voltage follower large signal pulse response RL = 10 kΩ OUTPUT INPUT VCC = +/- 15 V VCC = +/- 15 V RL = 2 kΩ CL = 100 pF Tamb = +25°C μs Figure 16. Output voltage versus elapsed time Figure 17. Equivalent input noise voltage versus frequency VCC = +/- 15 V OVERSHOOT AV = 10 RS = 100 Ω Tamb = +25°C VCC = +/- 15 V RL = 2 kΩ Tamb = +25°C tr μs Figure 18.
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Parameter measurement information 4 LF253, LF353 Parameter measurement information Figure 19. Voltage follower Figure 20.
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LF253, LF353 5 Typical application Typical application Figure 21.
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Package information 6 LF253, LF353 Package information In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK® packages, depending on their level of environmental compliance. ECOPACK® specifications, grade definitions and product status are available at: www.st.com. ECOPACK® is an ST trademark.
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LF253, LF353 6.1 Package information DIP8 package information Figure 22. DIP8 package mechanical drawing Table 4. DIP8 package mechanical data Dimensions Ref. Millimeters Min. Typ. A Inches Max. Min. Typ. 5.33 Max. 0.210 A1 0.38 0.015 A2 2.92 3.30 4.95 0.115 0.130 0.195 b 0.36 0.46 0.56 0.014 0.018 0.022 b2 1.14 1.52 1.78 0.045 0.060 0.070 c 0.20 0.25 0.36 0.008 0.010 0.014 D 9.02 9.27 10.16 0.355 0.365 0.400 E 7.62 7.87 8.26 0.300 0.310 0.
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Package information 6.2 LF253, LF353 SO-8 package information Figure 23. SO-8 package mechanical drawing Table 5. SO-8 package mechanical data Dimensions Ref. Millimeters Min. Typ. A Max. Min. Typ. 1.75 0.25 Max. 0.069 A1 0.10 A2 1.25 b 0.28 0.48 0.011 0.019 c 0.17 0.23 0.007 0.010 D 4.80 4.90 5.00 0.189 0.193 0.197 E 5.80 6.00 6.20 0.228 0.236 0.244 E1 3.80 3.90 4.00 0.150 0.154 0.157 e 0.004 0.010 0.049 1.27 0.050 h 0.25 0.50 0.010 0.020 L 0.
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LF253, LF353 7 Ordering information Ordering information Table 6.
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Revision history 8 LF253, LF353 Revision history Table 7. 14/15 Document revision history Date Revision Changes 01-Mar-2001 1 Initial release. 08-Sep-2008 2 Updated document format. Removed information concerning military temperature range (LF153). Added L1 parameter dimensions in Table 5: SO-8 package mechanical data. 25-Mar-2010 3 Corrected error in Table 6: Order codes: LF253N, LF253D, LF353N and LF353D proposed in tube packing.
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LF253, LF353 Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale.