Datasheet

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LMP2014MT

www.ti.com

SNOSAK6B –DECEMBER 2004–REVISED MARCH 2013

LMP2014MT Quad High Precision, Rail-to-Rail Output Operational Amplifier

Check for Samples: LMP2014MT

FEATURES

DESCRIPTION

The LMP2014MT is a member of Texas Instruments'

• (For V

= 5V, Typical Unless Otherwise Noted)

new LMP

precision amplifier family. The

• Low Specified V

Over Temperature 60 µV

LMP2014MT offers unprecedented accuracy and

• Low Noise with No 1/f 35nV/√Hz

stability while also being offered at an affordable

price. This device utilizes patented techniques to

• High CMRR 130 dB

measure and continually correct the input offset error

• High PSRR 120 dB

voltage. The result is an amplifier which is ultra stable

• High A

VOL

130 dB

over time and temperature. It has excellent CMRR

and PSRR ratings, and does not exhibit the familiar

• Wide Gain-Bandwidth Product 3 MHz

1/f voltage and current noise increase that plagues

• High Slew Rate 4 V/µs

traditional amplifiers. The combination of the

• Low Supply Current 3.7 mA

LMP2014 characteristics makes it a good choice for

transducer amplifiers, high gain configurations, ADC

• Rail-to-Rail Output 30 mV

buffer amplifiers, DAC I-V conversion, and any other

• No External Capacitors Required

2.7V-5V application requiring precision and long term

stability.

APPLICATIONS

Other useful benefits of the LMP2014 are rail-to-rail

• Precision Instrumentation Amplifiers

output, a low supply current of 3.7 mA, and wide

• Thermocouple Amplifiers

gain-bandwidth product of 3 MHz. These extremely

versatile features found in the LMP2014 provide high

• Strain Gauge Bridge Amplifier

performance and ease of use.

Connection Diagram

Figure 1. 14-Pin TSSOP – Top View

See Package Number PW

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 (21 pages)

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LMP2014MT www.ti.com SNOSAK6B – DECEMBER 2004 – REVISED MARCH 2013 LMP2014MT Quad High Precision, Rail-to-Rail Output Operational Amplifier Check for Samples: LMP2014MT FEATURES DESCRIPTION • • • • • • • • • • • The LMP2014MT is a member of Texas Instruments' new LMPTM precision amplifier family. The LMP2014MT offers unprecedented accuracy and stability while also being offered at an affordable price.
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LMP2014MT SNOSAK6B – DECEMBER 2004 – REVISED MARCH 2013 www.ti.com 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. Absolute Maximum Ratings (1) (2) ESD Tolerance Human Body Model 2000V Machine Model 200V Supply Voltage 5.8V −0.3 ≤ VCM ≤ VCC +0.3V Common-Mode Input Voltage Lead Temperature (soldering 10 sec.
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LMP2014MT www.ti.com SNOSAK6B – DECEMBER 2004 – REVISED MARCH 2013 2.7V DC Electrical Characteristics (continued) Unless otherwise specified, all limits specified for T J = 25°C, V+ = 2.7V, V-= 0V, V CM = 1.35V, VO = 1.35V and RL > 1 MΩ. Boldface limits apply at the temperature extremes. Symbol VO Parameter Output Swing Conditions RL = 10 kΩ to 1.35V VIN(diff) = ±0.5V Min (1) Typ (2) 2.63 2.655 2.68 0.033 RL = 2 kΩ to 1.35V VIN(diff) = ±0.5V 2.615 2.
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LMP2014MT SNOSAK6B – DECEMBER 2004 – REVISED MARCH 2013 www.ti.com 5V DC Electrical Characteristics (continued) Unless otherwise specified, all limits specified for T J = 25°C, V+ = 5V, V-= 0V, V CM = 2.5V, VO = 2.5V and RL > 1MΩ. Boldface limits apply at the temperature extremes. Symbol PSRR Power Supply Rejection Ratio AVOL Open Loop Voltage Gain VO Min (1) Typ (2) 95 90 120 RL = 10 kΩ 105 100 130 RL = 2 kΩ 95 90 132 4.92 4.95 4.978 Parameter Output Swing Conditions RL = 10 kΩ to 2.
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LMP2014MT www.ti.com SNOSAK6B – DECEMBER 2004 – REVISED MARCH 2013 Typical Performance Characteristics TA=25C, VS= 5V unless otherwise specified. Supply Current vs. Supply Voltage Offset Voltage vs. Supply Voltage Figure 2. Figure 3. Offset Voltage vs. Common Mode Offset Voltage vs. Common Mode Figure 4. Figure 5. Voltage Noise vs. Frequency Input Bias Current vs.
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LMP2014MT SNOSAK6B – DECEMBER 2004 – REVISED MARCH 2013 www.ti.com Typical Performance Characteristics (continued) TA=25C, VS= 5V unless otherwise specified. PSRR vs. Frequency PSRR vs. Frequency 120 120 VS = 2.7V 100 80 VCM = 2.5V 100 80 NEGATIVE PSRR (dB) PSRR (dB) VS = 5V VCM = 1V 60 40 NEGATIVE 60 40 POSITIVE POSITIVE 20 20 0 0 10 100 1k 10k 100k 1M 10M FREQUENCY (Hz) 6 10 100 1k 10k 100k 1M 10M FREQUENCY (Hz) Figure 8. Figure 9. Output Sourcing @ 2.
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LMP2014MT www.ti.com SNOSAK6B – DECEMBER 2004 – REVISED MARCH 2013 Typical Performance Characteristics (continued) TA=25C, VS= 5V unless otherwise specified. Max Output Swing vs. Supply Voltage Max Output Swing vs. Supply Voltage Figure 14. Figure 15. Min Output Swing vs. Supply Voltage Min Output Swing vs. Supply Voltage Figure 16. Figure 17. CMRR vs. Frequency Open Loop Gain and Phase vs. Supply Voltage 100 140 150.0 VS = 5V VS = 5V 120 80 120.0 PHASE 80 60 90.0 60.0 40 GAIN 30.
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LMP2014MT SNOSAK6B – DECEMBER 2004 – REVISED MARCH 2013 www.ti.com Typical Performance Characteristics (continued) TA=25C, VS= 5V unless otherwise specified. Open Loop Gain and Phase vs. RL @ 2.7V 100 Open Loop Gain and Phase vs. RL @ 5V 150.0 100 120.0 80 150.0 RL = >1M 80 120.0 PHASE PHASE 60.0 RL = >1M 40 30.0 20 VS = 5V VS = 2.7V 0.0 CL = < 20 pF RL = >1M & 2k 100k 10k 1M 100 100k 10k 1k FREQUENCY (Hz) Figure 21. Open Loop Gain and Phase vs. CL @ 5V 150.0 100 150.
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LMP2014MT www.ti.com SNOSAK6B – DECEMBER 2004 – REVISED MARCH 2013 Typical Performance Characteristics (continued) TA=25C, VS= 5V unless otherwise specified. THD+N vs. AMPL THD+N vs. Frequency 10 10 MEAS FREQ = 1 KHz MEAS BW = 22 KHz VOUT = 2 VPP MEAS BW = 500 kHz RL = 10k RL = 10k 1 AV = +10 1 THD+N (%) THD+N (%) AV = +10 VS = 2.7V 0.1 VS = 2.7V VS = 5V 0.1 VS = 5V VS = 5V VS = 2.7V 0.01 0.1 0.01 1 10 10 100 1k 10k OUTPUT VOLTAGE (VPP) FREQUENCY (Hz) Figure 26. Figure 27.
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LMP2014MT SNOSAK6B – DECEMBER 2004 – REVISED MARCH 2013 www.ti.com APPLICATION INFORMATION THE BENEFITS OF LMP2014 NO 1/f NOISE Using patented methods, the LMP2014 eliminates the 1/f noise present in other amplifiers. That noise, which increases as frequency decreases, is a major source of measurement error in all DC-coupled measurements. Low-frequency noise appears as a constantly-changing signal in series with any measurement being made.
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LMP2014MT www.ti.com SNOSAK6B – DECEMBER 2004 – REVISED MARCH 2013 MORE BENEFITS The LMP2014 offers the benefits mentioned above and more. It has a rail-to-rail output and consumes only 950 µA of supply current while providing excellent DC and AC electrical performance. In DC performance, the LMP2014 achieves 130 dB of CMRR, 120 dB of PSRR and 130 dB of open loop gain. In AC performance, the LMP2014 provides 3 MHz of gain-bandwidth product and 4 V/µs of slew rate.
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LMP2014MT SNOSAK6B – DECEMBER 2004 – REVISED MARCH 2013 www.ti.com INPUT CURRENTS The LMP2014's input currents are different than standard bipolar or CMOS input currents in that it appears as a current flowing in one input and out the other. Under most operating conditions, these currents are in the picoamp level and will have little or no effect in most circuits. These currents tend to increase slightly when the common-mode voltage is near the minus supply. (See the typical curves.
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LMP2014MT www.ti.com SNOSAK6B – DECEMBER 2004 – REVISED MARCH 2013 C2 R2 R7, 3.9k C4 0.01 PF R1 Input 2 - +15V 1N4733A (5.1V) D1 7 LMP201X 3 U1 + 4 3 7 + LM6171 2 U2 4 6 6 Output -15V (+2.5V) +15V R3 R5, 1M 20k R4 3.9k C3 0.01 PF Figure 33. Table 1. Composite Amplifier Measured Performance AV R1 Ω R2 Ω C2 pF BW MHz SR (V/μs) en p-p (mVPP) 50 200 10k 8 3.3 178 37 100 100 10k 10 2.5 174 70 100 1k 100k 0.67 3.1 170 70 500 200 100k 1.75 1.
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LMP2014MT SNOSAK6B – DECEMBER 2004 – REVISED MARCH 2013 www.ti.com In terms of the measured output peak-to-peak noise, the following relationship holds between output noise voltage, en p-p, for different closed-loop gain, AV, settings, where −3 dB Bandwidth is BW: C2 R2 R7, 3.9k 0.01 PF R1 +15V 1N4731A (4.3V) D1 C4 2 7 LMP201X 3 U1 + 4 Input 3 6 -15V R6 (-0.7V) 10k +15V R3 C5 0.01 PF 7 + LM6171 2 U2 4 Output 6 (+2.5V) 20k D2 R4 1N4148 3.9k R5, 1M C3 0.01 PF Figure 34.
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LMP2014MT www.ti.com SNOSAK6B – DECEMBER 2004 – REVISED MARCH 2013 LMP2014 AS ADC INPUT AMPLIFIER The LMP2014 is a great choice for an amplifier stage immediately before the input of an ADC (Analog-to-Digital Converter), whether AC or DC coupled. See Figure 35 and Figure 36. This is because of the following important characteristics: a. Very low offset voltage and offset voltage drift over time and temperature allow a high closed-loop gain setting without introducing any short-term or long-term errors.
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LMP2014MT SNOSAK6B – DECEMBER 2004 – REVISED MARCH 2013 www.ti.com REVISION HISTORY Changes from Revision A (March 2013) to Revision B • 16 Page Changed layout of National Data Sheet to TI format ..........................................................................................................
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE MATERIALS INFORMATION www.ti.com 23-Sep-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device LMP2014MTX/NOPB Package Package Pins Type Drawing TSSOP PW 14 SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 2500 330.0 12.4 Pack Materials-Page 1 6.95 B0 (mm) K0 (mm) P1 (mm) 8.3 1.6 8.0 W Pin1 (mm) Quadrant 12.
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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) LMP2014MTX/NOPB TSSOP PW 14 2500 367.0 367.0 35.
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