Datasheet

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LMV301

www.ti.com

SNOS968A –MAY 2004–REVISED MAY 2013

LMV301 Low Input Bias Current, 1.8V Op Amp w/ Rail-to-Rail Output

Check for Samples: LMV301

FEATURES

DESCRIPTION

The LMV301 CMOS operational amplifier is ideal for

• Input Bias Current: 0.182 pA

single supply, low voltage operation with an ensured

• Gain Bandwidth Product: 1 MHz

operating voltage range from 1.8V to 5V. The low

• Supply Voltage at 1.8V: 1.8 to 5 V

input bias current of less than 0.182pA typical,

eliminates input voltage errors that may originate from

• Supply Current: 150 µA

small input signals. This makes the LMV301 ideal for

• Input Referred Voltage Noise at 1kHz:

electrometer applications requiring low input leakage

40nV/√Hz

such as sensitive photodetection transimpedance

• DC Gain (600Ω Load): 100 dB

amplifiers and sensor amplifiers. The LMV301 also

features a rail-to-rail output voltage swing in addition

• Output Voltage Range at 1.8V: 0.024 to 1.77 V

to a input common-mode range that includes ground.

• Input Common-Mode Voltage Range: −0.3 to

The LMV301 will drive a 600Ω resistive load and up

±1.2 V

to 1000pF capacitive load in unity gain follower

applications. The low supply voltage also makes the

APPLICATIONS

LMV301 well suited for portable two-cell battery

systems and single cell Li-Ion systems.

• Thermocouple Amplifiers

The LMV301 exhibits excellent speed-power ratio,

• Photo Current Amplifiers

achieving 1MHz at unity gain with low supply current.

• Transducer Amplifiers

The high DC gain of 100dB makes it ideal for other

• Sample and Hold Circuits

low frequency applications.

• Low Frequency Active Filters

The LMV301 is offered in a space saving SC70

package, which is only 2.0X2.1X1.0mm. It is also

similar to the LMV321 except the LMV301 has a

CMOS input.

Connection Diagram

Applications Circuit

Top View

Figure 2. Low Leakage Sample and Hold

Figure 1. SC70-5 Package

See Package Number DCK0005A

These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam

during storage or handling to prevent electrostatic damage to the MOS gates.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

Summary of content (26 pages)

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LMV301 www.ti.com SNOS968A – MAY 2004 – REVISED MAY 2013 LMV301 Low Input Bias Current, 1.8V Op Amp w/ Rail-to-Rail Output Check for Samples: LMV301 FEATURES DESCRIPTION • • • • • The LMV301 CMOS operational amplifier is ideal for single supply, low voltage operation with an ensured operating voltage range from 1.8V to 5V. The low input bias current of less than 0.182pA typical, eliminates input voltage errors that may originate from small input signals.
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LMV301 SNOS968A – MAY 2004 – REVISED MAY 2013 www.ti.com Absolute Maximum Ratings (1) (2) Machine Model ESD Tolerance (3) 200V Human Body Model 2000V Differential Input Voltage ±Supply Voltage Supply Voltage (V+ - V−) 5.
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LMV301 www.ti.com SNOS968A – MAY 2004 – REVISED MAY 2013 1.8V DC Electrical Characteristics Unless otherwise specified, all limits ensured for TJ = 25°C. V+ = 1.8V, V− = 0V, VCM = V+/2, VO = V+/2, and RL > 1MΩ. Boldface limits apply at the temperature extremes. Parameter Min (1) Test Conditions + − VCM = 0.4V, V = 1.3V, = V = −0.5V Typ (2) Max (1) Units 0.9 8 9 mV 0.182 35 50 pA 150 250 275 µA VOS Input Offset Voltage IB Input Bias Current IS Supply Current VCM = 0.4V, V+ = 1.
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LMV301 SNOS968A – MAY 2004 – REVISED MAY 2013 www.ti.com 2.7V DC Electrical Characteristics Unless otherwise specified, all limits ensured for TJ = 25°C. V+ = 2.7V, V− = 0V, VCM = V+/2, VO = V+/2, and RL > 1MΩ. Boldface limits apply at the temperature extremes. Parameter Min (1) Test Conditions − + VCM = 0.35V, V = 1.7V, V = −1V Typ (2) Max (1) Units 0.9 8 9 mV 0.182 35 50 pA 153 250 275 µA VOS Input Offset Voltage IB Input Bias Current IS Supply Current VCM = 0.35V, V+ = 1.
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LMV301 www.ti.com SNOS968A – MAY 2004 – REVISED MAY 2013 5V DC Electrical Characteristics Unless otherwise specified, all limits ensured for TJ = 25°C. V+ = 5V, V− = 0V, VCM = V+/2, VO = V+/2, and RL > 1MΩ. Boldface limits apply at the temperature extremes. Parameter Min (1) Test Conditions + − VCM = 0.5V, V = 3V, V = −2V Typ (2) Max (1) Units 0.9 8 9 mV 0.182 35 50 pA 163 260 285 µA VOS Input Offset Voltage IB Input Bias Current IS Supply Current VCM = 0.
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LMV301 SNOS968A – MAY 2004 – REVISED MAY 2013 www.ti.
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LMV301 www.ti.com SNOS968A – MAY 2004 – REVISED MAY 2013 Typical Performance Characteristics Unless otherwise specified, TA = 25°C. Supply Current vs. Supply Voltage Output Negative Swing vs. Supply Voltage Figure 3. Figure 4. Output Negative Swing vs. Supply Voltage Output Positive Swing vs. Supply Voltage Figure 5. Figure 6. Output Positive Swing vs. Supply Voltage VOS vs. VCM Figure 7. Figure 8.
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LMV301 SNOS968A – MAY 2004 – REVISED MAY 2013 www.ti.com Typical Performance Characteristics (continued) Unless otherwise specified, TA = 25°C. 8 VOS vs. VCM VOS vs. VCM Figure 9. Figure 10. Sourcing Current vs. Output Voltage Sinking Current vs. Output Voltage Figure 11. Figure 12. Sourcing Current vs. Output Voltage Sinking Current vs. Output Voltage Figure 13. Figure 14.
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LMV301 www.ti.com SNOS968A – MAY 2004 – REVISED MAY 2013 Typical Performance Characteristics (continued) Unless otherwise specified, TA = 25°C. Sourcing Current vs. Output Voltage Sinking Current vs. Output Voltage Figure 15. Figure 16. IBIAS Current vs. VCM Open Loop Frequency Response Figure 17. Figure 18. Open Loop Frequency Response Open Loop Frequency Response Figure 19. Figure 20.
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LMV301 SNOS968A – MAY 2004 – REVISED MAY 2013 www.ti.com Typical Performance Characteristics (continued) Unless otherwise specified, TA = 25°C. 10 Open Loop Frequency Response Open Loop Frequency Response Figure 21. Figure 22. Open Loop Frequency Response Noise vs. Frequency Response Figure 23. Figure 24. Noise vs. Frequency Response Noise vs. Frequency Response Figure 25. Figure 26.
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LMV301 www.ti.com SNOS968A – MAY 2004 – REVISED MAY 2013 Typical Performance Characteristics (continued) Unless otherwise specified, TA = 25°C. Small Signal Response Large Signal Response Figure 27. Figure 28. Small Signal Response Large Signal Response Figure 29. Figure 30. Small Signal Response Large Signal Response Figure 31. Figure 32.
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LMV301 SNOS968A – MAY 2004 – REVISED MAY 2013 www.ti.com Typical Performance Characteristics (continued) Unless otherwise specified, TA = 25°C. 12 Small Signal Response Large Signal Response Figure 33. Figure 34.
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LMV301 www.ti.com SNOS968A – MAY 2004 – REVISED MAY 2013 APPLICATION HINTS Compensating Input Capacitance The high input resistance of the LMV301 op amp allows the use of large feedback and source resistor values without losing gain accuracy due to loading. However, the circuit will be especially sensitive to its layout when these large value resistors are used. Every amplifier has some capacitance between each input and AC ground, and also some differential capacitance between the inputs.
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LMV301 SNOS968A – MAY 2004 – REVISED MAY 2013 www.ti.com If (7) the feedback capacitor should be: (8) Note that these capacitor values are usually significantly smaller than those given by the older, more conservative formula: (9) CS consists of the amplifier's input capacitance plus any stray capacitance from the circuit board and socket. CF compensates for the pole caused by CS and the feedback resistors. Figure 35.
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LMV301 www.ti.com SNOS968A – MAY 2004 – REVISED MAY 2013 Figure 36. Rx, Cx Improve Capacitive Load Tolerance Capacitive load driving capability is enhanced by using a pull up resistor to V+ (Figure 37). Typically a pull up resistor conducting 500µA or more will significantly improve capacitive load responses. The value of the pull up resistor must be determined based on the current sinking capability of the amplifier with respect to the desired output swing.
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LMV301 SNOS968A – MAY 2004 – REVISED MAY 2013 www.ti.com Figure 38. Example, using the LMV301, of Guard Ring in P.C. Board Layout Guard Ring Connections Figure 39. Inverting Amplifier Figure 40. Non-Inverting Amplifier Figure 41.
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LMV301 www.ti.com SNOS968A – MAY 2004 – REVISED MAY 2013 Figure 42. Howland Current Pump The designer should be aware that when it is inappropriate to lay out a PC board for the sake of just a few circuits, there is another technique which is even better than a guard ring on a PC board: Don't insert the amplifier's input pin into the board at all, but bend it up in the air and use only air as an insulator. Air is an excellent insulator.
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LMV301 SNOS968A – MAY 2004 – REVISED MAY 2013 www.ti.com Figure 45. Sine-Wave Oscillator Oscillator frequency is determined by R1, R2, C1, and C2: fosc = 1/2πRC where • • R = R1 = R2 C = C1 = C2 (10) This circuit, as shown, oscillates at 2.0kHz with a peak-to-peak output swing of 4.5V. Figure 46. 1 Hz Square-Wave Oscillator Figure 47.
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LMV301 www.ti.com SNOS968A – MAY 2004 – REVISED MAY 2013 fO = 10 Hz Q = 2.1 Gain = −8.8 Figure 48. 10Hz Bandpass Filter fc = 10 Hz d = 0.895 Gain = 1 2 dB passband ripple Figure 49. 10 Hz High-Pass Filter fc = 1 Hz d = 1.414 Gain = 1.57 Figure 50.
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LMV301 SNOS968A – MAY 2004 – REVISED MAY 2013 www.ti.com REVISION HISTORY Changes from Original (May 2013) to Revision A • 20 Page Changed layout of National Data Sheet to TI format ..........................................................................................................
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 1-Nov-2013 continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
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PACKAGE MATERIALS INFORMATION www.ti.com 23-Sep-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant LMV301MG/NOPB SC70 DCK 5 1000 178.0 8.4 2.25 2.45 1.2 4.0 8.0 Q3 LMV301MGX SC70 DCK 5 3000 178.0 8.4 2.25 2.45 1.2 4.0 8.0 Q3 LMV301MGX/NOPB SC70 DCK 5 3000 178.0 8.4 2.25 2.45 1.2 4.0 8.
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PACKAGE MATERIALS INFORMATION www.ti.com 23-Sep-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) LMV301MG/NOPB SC70 DCK 5 1000 210.0 185.0 35.0 LMV301MGX SC70 DCK 5 3000 210.0 185.0 35.0 LMV301MGX/NOPB SC70 DCK 5 3000 210.0 185.0 35.
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