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Table Of Contents

Rev 3

October 2005 1/14

LM2902

Low Power Quad Operational Amplifier

■ Wide gain bandwidth: 1.3MHz

■ Input common-mode voltage range includes

ground

■ Large voltage gain: 100dB

■ Very low supply current per amp: 375µA

■ Low input bias current: 20nA

■ Low input offset current: 2nA

■ Wide power supply range:

– Single supply: +3V to +30V

– Dual supplies: ±1.5V to ±15V

Description

This circuit consists of four independent, high

gain, internally frequency compensated

operational amplifiers designed especially for

automotive and industrial control systems.

It operates from a single power supply over a wide

range of voltages. Operation from split power

supplies is also possible and the low power supply

current drain is independent of the magnitude of

the power supply voltage.

Order Codes

DIP14

(Plastic Package)

SO-14

(Plastic Micropackage)

TSSOP14

(Thin Shrink Small Outline Package)

Part Number Temperature Range Package Packing Marking

LM2902N

-40°C, +125°C

DIP14 Tube LM2902N

LM2902D/DT SO-14 Tube or Tape & Reel

2902

LM2902PT

TSSOP14

(Thin Shrink Outline Package)

Tape & Reel

LM2902YD/YDT SO-14 (automotive grade level) Tube or Tape & Reel

2902Y

LM2902YPT

TSSOP14

(automotive grade level)

Tape & Reel

www.st.com

Summary of content (14 pages)

PAGE 1
LM2902 Low Power Quad Operational Amplifier ■ Wide gain bandwidth: 1.3MHz ■ Input common-mode voltage range includes ground ■ Large voltage gain: 100dB ■ Very low supply current per amp: 375µA ■ Low input bias current: 20nA ■ Low input offset current: 2nA ■ Wide power supply range: – Single supply: +3V to +30V – Dual supplies: ±1.
PAGE 2
Absolute Maximum Ratings 1 LM2902 Absolute Maximum Ratings Table 1. Key parameters and their absolute maximum ratings Symbol Parameter VCC Supply Voltage VID Differential Input Voltage VI Input Voltage Output Short-circuit to Ground (1) Value Unit ±16 to 33 V +32 V -0.
PAGE 3
LM2902 2 Typical Application Information Typical Application Information Figure 1. Schematic diagram (1/4 LM2902) V CC 6µA 4µA 100µA Q5 Q6 CC Inverting input Q2 Q3 Q1 Q7 Q4 R SC Q11 Non-inverting input Output Q13 Q10 Q8 Q12 Q9 50mA GND Figure 2.
PAGE 4
Electrical Characteristics 3 LM2902 Electrical Characteristics Table 2. VCC+ = 5V, Vcc- = Ground, Vo = 1.4V, Tamb = 25°C (unless otherwise specified) Symbol Parameter Min. Typ. Max. Unit 2 7 9 mV 2 30 40 nA 20 150 300 nA Input Offset Voltage (1) Vio Tamb = +25°C Tmin ≤ T amb ≤ Tmax. Input Offset Current Iio Tamb = +25°C Tmin ≤ T amb ≤ Tmax. Input Bias Current (2) Iib Tamb = +25°C Tmin ≤ T amb ≤ Tmax. Large Signal Voltage Gain Avd VCC + = +15V, RL=2kΩ, Vo = 1.4V to 11.
PAGE 5
LM2902 Electrical Characteristics Symbol Parameter Min. Typ. Max. 5 20 20 Unit Low Level Output Voltage (RL = 10kΩ) VOL Tamb = +25°C Tmin ≤ T amb ≤ Tmax mV Slew Rate SR GBP VCC = 15V, Vi = 0.5 to 3V, RL = 2kΩ, CL = 100pF, unity gain V/µs 0.4 Gain Bandwidth Product VCC = 30V, Vin = 10mV, R L = 2kΩ, C L = 100pF MHz 1.3 Total Harmonic Distortion THD en % 0.
PAGE 6
Electrical Characteristics Figure 3. LM2902 Input bias current vs. Tamb Figure 4. Input voltage range INPUT VOLTAGE RANGE INPUT BIAS CURRENT versus AMBIENT TEMPERATURE 15 INPUT VOLTAGE (V) 24 21 18 15 12 9 6 3 0 IB (nA) 10 Négative Positive 5 -55-35-15 5 25 45 65 85 105 125 0 AMBIENT TEMPERATURE (°C) Figure 5. Current limiting 5 Figure 6.
PAGE 7
LM2902 Electrical Characteristics Figure 9. Common mode rejection ratio Figure 10. Output characteristics OUTPUT CHARACTERISTICS COMMON MODE REJECTION RATIO 10 OUTPUT VOLTAGE (V) COMMON MODE REJECTION RATIO (dB) 120 100 80 +7.5V 100kΩ 100 Ω 60 - 40 eO 100 Ω eI + 100kΩ 20 VCC = +5V VCC = +15V VCC = +30V 1 v cc v cc /2 0.1 Tamb = +25°C 0.01 100 10K 1K 0,001 1M 100K Figure 11.
PAGE 8
Electrical Characteristics LM2902 Figure 15. Positive supply voltage Figure 16. Positive supply voltage 160 R L = 20k Ω 50 25 Tamb= +25°C 115 110 105 100 95 90 85 80 75 SVR CMR 70 -55-35-15 5 25 45 65 85 105 125 AMBIENT TEMPERATURE (°C) 8/14 40 10 20 30 POSITIVE SUPPLY VOLTAGE (V) Figure 18.
PAGE 9
LM2902 4 Typical Single-Supply Applications Typical Single-Supply Applications Figure 19. AC coupled inverting amplifier Rf 100kΩ CI R1 100kΩ Rf A V= - R1 (as shown AV = -10) R1 10kΩ Co 1/4 LM2902 2VPP 0 eo RB 6.2kΩ R3 100kΩ A V= 1 + R2 R1 (as shown A V = 11) C1 0.1µF CI R3 1MΩ eI ~ RL 10kΩ R4 100kΩ VCC C2 10µF Figure 21. Non-inverting DC gain eO 1/4 LM2902 e1 100kΩ +5V 100kΩ e2 100kΩ e3 100kΩ (V) R2 1M Ω R5 100kΩ Figure 22.
PAGE 10
Typical Single-Supply Applications LM2902 Figure 25. High input Z, DC differential amplifier Figure 26. Low drift peak detector IB 1/4 eI R1 100kΩ 1/4 LM2902 R3 100kΩ C * 1µF ZI 1/4 LM2902 +V1 +V2 Zo 2I B 2N 929 0.001µF Vo 2I B R4 ] (e2 - e1) R3 eo = [ 1 + R 1MΩ As shown eo = (e2 - e1) IB 3R 3MΩ IB * Polycarbonate or polyethylene Figure 27. Using symmetrical amplifiers to reduce input current (general concept) 1/4 I eI IB I eo I B LM2902 2N 929 0.001µ F IB IB 3MΩ IB 1.
PAGE 11
LM2902 5 Package Mechanical Data Package Mechanical Data In order to meet environmental requirements, ST offers these devices in ECOPACK® packages. These packages have a Lead-free second level interconnect. The category of second level interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.
PAGE 12
Package Mechanical Data 5.2 LM2902 SO-14 package SO-14 MECHANICAL DATA DIM. mm. MIN. TYP A a1 inch MAX. MIN. TYP. 1.75 0.1 0.068 0.2 a2 0.003 0.007 0.46 0.013 0.018 0.25 0.007 1.65 b 0.35 b1 0.19 C MAX. 0.064 0.5 0.010 0.019 c1 45˚ (typ.) D 8.55 8.75 0.336 E 5.8 6.2 0.228 e 1.27 e3 0.344 0.244 0.050 7.62 0.300 F 3.8 4.0 0.149 0.157 G 4.6 5.3 0.181 0.208 L 0.5 1.27 0.019 M S 0.68 0.050 0.026 8 ˚ (max.
PAGE 13
LM2902 5.3 Package Mechanical Data TSSOP14 package TSSOP14 MECHANICAL DATA mm. inch DIM. MIN. TYP A MAX. MIN. TYP. MAX. 1.2 A1 0.05 A2 0.8 b 0.047 0.15 0.002 0.004 0.006 1.05 0.031 0.039 0.041 0.19 0.30 0.007 0.012 c 0.09 0.20 0.004 0.0089 D 4.9 5 5.1 0.193 0.197 0.201 E 6.2 6.4 6.6 0.244 0.252 0.260 E1 4.3 4.4 4.48 0.169 0.173 0.176 1 e 0.65 BSC K 0˚ L 0.45 A 0.60 0.0256 BSC 8˚ 0˚ 0.75 0.018 8˚ 0.024 0.
PAGE 14
Revision History 6 LM2902 Revision History Date Revision Nov. 2001 1 Initial release. July 2005 2 1 - PPAP references inserted in the datasheet see Table : Order Codes on page 1 . 2 - ESD protection inserted in Table 1 on page 2. 3 The following changes were made in this revision: – An error in the device description was corrected on page 1. – PPAP reference inserted in the datasheet see Table : Order Codes on page 1. – Minor grammatical and formatting changes throughout. Oct.