Datasheet

ManualsBrandsSTMICROELECTRONICS ManualsLinear ICsLinear IC - Comparator Multi-purpose CMOS, DTL, ECL, MOS, Open collector, TTL TSSOP 14

February 2012 Doc ID 2468 Rev 7 1/17

LM2901

Low-power quad voltage comparator

Features

■ Wide single supply voltage range or dual

supplies for all devices: +2 V to +36 V or ±1 V

to ±18 V

■ Very low supply current (1.1 mA) independent

of supply voltage (1.4 mW/comparator at +5 V)

■ Low input bias current: 25 nA typ.

■ Low input offset current: ±5 nA typ.

■ Input common-mode voltage range includes

negative rail

■ Low output saturation voltage:

250 mV typ. (I

= 4 mA)

■ Differential input voltage range equal to the

supply voltage

■ TTL, DTL, ECL, MOS, CMOS compatible

outputs

Description

This device consists of four independent precision

voltage comparators, which are designed

specifically to operate from a single supply over a

wide range of voltages. Operation from split

power supplies is also possible.

These comparators also have a unique

characteristic in that the input common-mode

voltage range includes the negative rail even

though operated from a single power supply

voltage.

DIP14

(Plastic package)

SO-14

(Plastic micropackage)

TSSOP14

(Thin shrink small outline package)

QFN16 3x3

(Plastic micropackage)

www.st.com

Summary of content (17 pages)

PAGE 1
LM2901 Low-power quad voltage comparator Features ■ Wide single supply voltage range or dual supplies for all devices: +2 V to +36 V or ±1 V to ±18 V ■ Very low supply current (1.1 mA) independent of supply voltage (1.4 mW/comparator at +5 V) ■ Low input bias current: 25 nA typ. ■ Low input offset current: ±5 nA typ. ■ Input common-mode voltage range includes negative rail ■ Low output saturation voltage: 250 mV typ.
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Pin connection and schematic diagram 1 LM2901 Pin connection and schematic diagram Figure 1. Pin connections (top view) Output 2 1 14 Output 1 2 13 O u tput 4 VCC+ Figure 2. 3 O u tput 3 12 VC C - Inverting input 1 4 11 Non-inverting input 4 Non-inverting input 1 5 10 Inverting input 4 Inverting input 2 6 9 Non-inverting input 3 Non-inverting input 2 7 8 Inverting input 3 Schematic diagram VCC 3.5 μ A 100 μA 3.
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LM2901 2 Absolute maximum ratings and operating conditions Absolute maximum ratings and operating conditions Table 1. Absolute maximum ratings Symbol Parameter VCC Supply voltage Vid Differential input voltage Vin Input voltage Value Unit ±18 to 36 V ±36 V -0.
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Electrical characteristics 3 LM2901 Electrical characteristics Table 3. Symbol Vio Iio Iib Avd Electrical characteristics at VCC+ = 5 V, VCC- = GND, Tamb = 25° C (unless otherwise specified) Parameter Min. Input offset voltage (1) Typ. Max.
PAGE 5
LM2901 Electrical characteristics Figure 3. Supply current vs. supply voltage Figure 4. Input current vs. supply voltage Figure 5. Output saturation voltage vs. output current Figure 6. Response time for various input overdrives - negative transition Figure 7.
PAGE 6
Typical application schematics LM2901 4 Typical application schematics Figure 8. Basic comparator Figure 9. Driving CMOS 5V VCC = 5 V 100 kΩ 15 kΩ +V(ref) +V(ref) 1/4 LM2901 VO -V(ref) Figure 10. Driving TTL 1/ 4 LM2901 & -V(ref) Figure 11. Low frequency op-amp 5V 5V 15 kΩ 10 kΩ 1/4 LM2901 +V(ref) ~ 1/ 4 LM2901 el eo & 0.5 μF 100 kΩ -V(ref) 1 kΩ & AV = 100 Figure 12. Low frequency op-amp with boost Figure 13.
PAGE 7
LM2901 Typical application schematics Figure 14. Low frequency op-amp with offset adjust Figure 15. Zero crossing detector (single power supply) 5V 5V Offset adjust 100 kΩ 5V 100 kΩ R2 1 MΩ RS 1 MΩ R1 5.1 kΩ el 15 kΩ 1/ 4 LM2901 el ~ 5.1 kΩ 100 kΩ 5.1 kΩ 1/ 4 LM2901 2N 2222 1N4148 0.5 μ F R1 100 kΩ 1 kΩ 20 MΩ 10 kΩ eo Figure 16. Limit comparator Figure 17. Split-supply applications - zero crossing detector VCC 10 kΩ 2RS V(ref) high 5.
PAGE 8
Typical application schematics LM2901 Figure 20. Time delay generator VC C = +15 V 10 kΩ 15 kΩ 3 kΩ 200 kΩ 10 MΩ 10 kΩ 1/4 LM2901 V3 V03 VCC to t3 3 kΩ 10 kΩ 51 kΩ 1/4 LM2901 VCC 0 to tA 10 MΩ 10 kΩ VC1 1/4 LM2901 V2 V(ref.) VO2 VCC to t2 0.001 μF Input gating signal 3 kΩ VCC 10 MΩ 51 kΩ 1/4 LM2901 V3 VC1 V2 V1 0 t 0 t1 t2 t3 10 kΩ V O1 VCC t0 t1 V1 t 51 kΩ t4 Figure 21.
PAGE 9
LM2901 5 Package information 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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Package information 5.1 LM2901 DIP14 package information Figure 22. DIP14 package mechanical drawing Table 4. DIP14 package mechanical data Dimensions Millimeters Inches Ref. Min. Typ. A Min. Typ. 5.33 Max. 0.21 A1 0.38 0.015 A2 2.92 3.30 4.95 0.11 0.13 0.19 b 0.36 0.46 0.56 0.014 0.018 0.022 b2 1.14 1.52 1.78 0.04 0.06 0.07 c 0.20 0.25 0.36 0.007 0.009 0.01 D 18.67 19.05 19.69 0.73 0.75 0.77 E 7.62 7.87 8.26 0.30 0.31 0.32 E1 6.10 6.35 7.11 0.
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LM2901 5.2 Package information QFN16 3 x 3 package information Figure 23.
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Package information Table 5. LM2901 QFN16 3 x 3 mm package mechanical data (pitch 0.5 mm) Dimensions Ref. Millimeters Inches Min. Typ. Max. Min. Typ. Max. A 0.80 0.90 1.00 0.031 0.035 0.039 A1 0 0.05 0 A3 0.20 b 0.18 D 2.90 D2 1.50 E 2.90 E2 1.50 e L 3.00 3.00 0.008 0.30 0.007 3.10 0.114 1.80 0.059 3.10 0.114 1.80 0.059 0.50 0.30 0.012 0.118 0.122 0.071 0.118 0.122 0.071 0.020 0.50 0.012 Figure 24. QFN16 3 x 3 mm footprint recommendation 12/17 0.
PAGE 13
LM2901 5.3 Package information SO-14 package information Figure 25. SO-14 package mechanical drawing Table 6. SO-14 package mechanical data Dimensions Millimeters Inches Ref. Min. Typ. Max. Min. Typ. Max. A 1.35 1.75 0.05 0.068 A1 0.10 0.25 0.004 0.009 A2 1.10 1.65 0.04 0.06 B 0.33 0.51 0.01 0.02 C 0.19 0.25 0.007 0.009 D 8.55 8.75 0.33 0.34 E 3.80 4.0 0.15 0.15 e 1.27 0.05 H 5.80 6.20 0.22 0.24 h 0.25 0.50 0.009 0.02 L 0.40 1.27 0.015 0.
PAGE 14
Package information 5.4 LM2901 TSSOP14 package information Figure 26. TSSOP14 package mechanical drawing Table 7. TSSOP14 package mechanical data Dimensions Ref. Millimeters Min. Typ. A Max. Min. Typ. 1.20 A1 0.05 A2 0.80 b Max. 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 4.90 5.00 5.10 0.193 0.197 0.201 E 6.20 6.40 6.60 0.244 0.252 0.260 E1 4.30 4.40 4.50 0.169 0.173 0.176 e L k aaa 1.00 0.
PAGE 15
LM2901 6 Ordering information Ordering information Table 8. Order codes Order code Temperature range Package Packing Marking LM2901N DIP14 Tube LM2901N LM2901D LM2901DT SO-14 Tube or tape & reel LM2901PT TSSOP14 Tape & reel QFN16 3x3 Tape & reel LM2901YDT(1) SO-14 (Automotive grade) Tape & reel LM2901YPT(1) TSSOP14 (Automotive grade) Tape & reel LM2901Q4T 2901 -40°C to +125°C K5I 2901Y 1.
PAGE 16
Revision history 7 LM2901 Revision history Table 9. 16/17 Document revision history Date Revision Changes 01-Jan-2002 1 Initial release. 01-Jul-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 3. 01-Oct-2005 3 The following changes were made in this revision: – PPAP part number added in table Order codes on page 1. – Formatting changes throughout.
PAGE 17
LM2901 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.