Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsLinear ICsLinear IC - Op-amp Multi-purpose TSSOP 14

LMV771, LMV772, LMV774

www.ti.com

SNOSA04F –MAY 2004–REVISED SEPTEMBER 2010

LMV771/LMV772/LMV772Q/LMV774 Single/Dual/Quad, Low Offset, Low Noise, RRO

Operational Amplifiers

Check for Samples: LMV771, LMV772, LMV774

FEATURES

• Temperature range −40°C to 125°C

• LMV772Q is AEC-Q100 Grade 1 qualified and

• (Unless otherwise noted, typical values at V

is manufactured on Automotive grade flow

2.7V)

• Guaranteed 2.7V and 5V specifications

APPLICATIONS

• Maximum V

(LMV771) 850μV (limit)

• Transducer amplifier

• Voltage noise

• Instrumentation amplifier

• f = 100 Hz 12.5nV/√Hz

• Precision current sensing

• f = 10 kHz 7.5nV/√Hz

• Data acquisition systems

• Rail-to-Rail output swing

• Active filters and buffers

• R

= 600Ω 100mV from rail

• Sample and hold

• R

= 2kΩ 50mV from rail

• Portable/battery powered electronics

• Open loop gain with R

= 2kΩ 100dB

• Automotive

• V

0 to V

−0.9V

• Supply current (per amplifier) 550µA

• Gain bandwidth product 3.5MHz

DESCRIPTION

The LMV771/LMV772/LMV772Q/LMV774 are Single, Dual, and Quad low noise precision operational amplifiers

intended for use in a wide range of applications. Other important characteristics of the family include: an

extended operating temperature range of −40°C to 125°C, the tiny SC70-5 package for the LMV771, and low

input bias current.

The extended temperature range of −40°C to 125°C allows the LMV771/LMV772/LMV772Q/LMV774 to

accommodate a broad range of applications. The LMV771 expands National Semiconductor’s Silicon Dust™

amplifier portfolio offering enhancements in size, speed, and power savings. The

LMV771/LMV772/LMV772Q/LMV774 are guaranteed to operate over the voltage range of 2.7V to 5.0V and all

have rail-to-rail output.

The LMV771/LMV772/LMV772Q/LMV774 family is designed for precision, low noise, low voltage, and miniature

systems. These amplifiers provide rail-to-rail output swing into heavy loads. The maximum input offset voltage for

the LMV771 is 850 μV at room temperature and the input common mode voltage range includes ground.

The LMV771 is offered in the tiny SC70-5 package, LMV772/LMV772Q in the space saving MSOP-8 and SOIC-

8, and the LMV774 in TSSOP-14.

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.

2Silicon Dust is a trademark of Texas Instruments.

3All other 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 (33 pages)

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LMV771, LMV772, LMV774 www.ti.com SNOSA04F – MAY 2004 – REVISED SEPTEMBER 2010 LMV771/LMV772/LMV772Q/LMV774 Single/Dual/Quad, Low Offset, Low Noise, RRO Operational Amplifiers Check for Samples: LMV771, LMV772, LMV774 FEATURES 1 • 23 • • • • • • • • • • • • (Unless otherwise noted, typical values at VS = 2.7V) Guaranteed 2.7V and 5V specifications Maximum VOS (LMV771) 850μV (limit) Voltage noise f = 100 Hz 12.5nV/√Hz f = 10 kHz 7.
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LMV771, LMV772, LMV774 SNOSA04F – MAY 2004 – REVISED SEPTEMBER 2010 www.ti.com Connection Diagram 1 5 +IN V + + 2 GND - -IN 4 3 VOUT Figure 1. SC70-5 (Top View) Instrumentation Amplifier V1 + V01 - R2 KR2 R1 R1 R11 = a + R1 V2 + VOUT V02 R2 KR2 VO = -K (2a + 1) (V1 - V2) (1) These devices have limited built-in ESD protection.
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LMV771, LMV772, LMV774 www.ti.com SNOSA04F – MAY 2004 – REVISED SEPTEMBER 2010 Absolute Maximum Ratings ESD Tolerance (1) (2) Machine Model 200V Human Body Model 2000V Differential Input Voltage ± Supply Voltage + Voltage at Input Pins (V ) + 0.3V, (V–) – 0.3V Current at Input Pins ±10 mA Supply Voltage (V+–V −) 5.
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LMV771, LMV772, LMV774 SNOSA04F – MAY 2004 – REVISED SEPTEMBER 2010 2.7V DC Electrical Characteristics www.ti.com (1) Unless otherwise specified, all limits are guaranteed for TA = 25°C. V+ = 2.7V, V − = 0V, VCM = V+/2, VO = V+/2 and RL > 1MΩ. Boldface limits apply at the temperature extremes. Symbol Parameter Condition Min (2) LMV771 VOS Input Offset Voltage LMV772/LMV772Q/LMV774 TCVOS Max 0.3 0.85 1.0 0.3 1.0 1.2 (3) 0.
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LMV771, LMV772, LMV774 www.ti.com SNOSA04F – MAY 2004 – REVISED SEPTEMBER 2010 2.7V AC Electrical Characteristics (1) Unless otherwise specified, all limits are guaranteed for TA = 25°C. V+ = 5.0V, V − = 0V, VCM = V+/2, VO = V+/2 and RL > 1MΩ. Boldface limits apply at the temperature extremes.
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LMV771, LMV772, LMV774 SNOSA04F – MAY 2004 – REVISED SEPTEMBER 2010 5.0V DC Electrical Characteristics www.ti.com (1) Unless otherwise specified, all limits are guaranteed for TA = 25°C. V+ = 5.0V, V − = 0V, VCM = V+/2, VO = V+/2 and RL > 1MΩ. Boldface limits apply at the temperature extremes. Symbol Parameter Condition Min (2) LMV771 VOS Input Offset Voltage LMV772/LMV772Q/LMV774 TCVOS Max 0.25 0.85 1.0 0.25 1.0 1.2 (3) 0.
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LMV771, LMV772, LMV774 www.ti.com SNOSA04F – MAY 2004 – REVISED SEPTEMBER 2010 5.0V AC Electrical Characteristics (1) Unless otherwise specified, all limits are guaranteed for TA = 25°C. V+ = 5.0V, V − = 0V, VCM = V+/2, VO = V+/2 and RL > 1MΩ. Boldface limits apply at the temperature extremes.
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LMV771, LMV772, LMV774 SNOSA04F – MAY 2004 – REVISED SEPTEMBER 2010 www.ti.com Typical Performance Characteristics VOS vs. VCM Over Temperature VOS vs. VCM Over Temperature 4 3 VS = 2.7V -40°C 2.5 -40°C 25°C 25°C 3 85°C 2 2.5 85°C 125°C 1.5 VOS (mV) VOS (mV) VS = 5V 3.5 125°C 1 0.5 2 1.5 1 0.5 0 0 -0.5 -1 -0.5 -0.5 0 0.5 1.5 1 2 -1 -0.5 0 0.5 1 1.5 2 2.5 3 3.5 4 2.5 VCM (V) VCM (V) Output Swing vs. VS Output Swing vs. VS 4.
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LMV771, LMV772, LMV774 www.ti.com SNOSA04F – MAY 2004 – REVISED SEPTEMBER 2010 Typical Performance Characteristics (continued) VIN vs. VOUT VIN vs. VOUT 500 500 VS = ±1.35V 400 200 RL = 2k: 100 0 RL = 600: -100 -200 RL = 2k: 100 0 RL = 600: -100 -200 -300 -400 -400 -500 -1 0.5 0 0.5 1 1.5 -3 -2 -1 0 1 2 OUTPUT VOLTAGE (V) OUTPUT VOLTAGE (V) Sourcing Current vs. VOUT (1) Sourcing Current vs. VOUT (1) 3 0 0 VS = 2.
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LMV771, LMV772, LMV774 SNOSA04F – MAY 2004 – REVISED SEPTEMBER 2010 www.ti.com Typical Performance Characteristics (continued) Input Voltage Noise vs. Frequency Input Bias Current Over Temperature INPUT VOLTAGE NOISE (nV/ Hz) 35 30 25 20 15 VS = 2.7V 10 VS = 5V 5 0 10 100 1k 10k FREQUENCY (Hz) Input Bias Current Over Temperature Input Bias Current Over Temperature 500 50 T = 25°C 300 200 100 VS = 2.
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LMV771, LMV772, LMV774 www.ti.com SNOSA04F – MAY 2004 – REVISED SEPTEMBER 2010 Typical Performance Characteristics (continued) Slew Rate vs. Supply Voltage Open Loop Frequency Response Over Temperature 2 RL = 10k: 90 80 60 VIN = 2VPP 25°C 1.7 70 50 1.6 RISING EDGE 1.5 1.4 125°C GAIN 40 60 50 30 -40°C 40 20 125°C FALLING EDGE 1.2 0 1.1 -10 3.5 4 4.
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LMV771, LMV772, LMV774 SNOSA04F – MAY 2004 – REVISED SEPTEMBER 2010 www.ti.com Typical Performance Characteristics (continued) INPUT SIGNAL Non-Inverting Large Signal Pulse Response TA = 25°C RL = 2k: OUTPUT SIGNAL VS = ±2.5V TA = 25°C RL = 2k: (1 V/div) VS = ±2.5V (50 mV/div) OUTPUT SIGNAL INPUT SIGNAL Non-Inverting Small Signal Pulse Response VS = ±2.
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LMV771, LMV772, LMV774 www.ti.com SNOSA04F – MAY 2004 – REVISED SEPTEMBER 2010 Typical Performance Characteristics (continued) INPUT SIGNAL Inverting Large Signal Pulse Response TA = 125°C RL = 2k: OUTPUT SIGNAL VS = ±2.5V TA = 125°C RL = 2k: (1 V/div) VS = ±2.5V (50 mV/div) OUTPUT SIGNAL INPUT SIGNAL Inverting Small Signal Pulse Response TIME (10 Ps/div) TIME (10 Ps/div) Stability vs. VCM Stability vs.
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LMV771, LMV772, LMV774 SNOSA04F – MAY 2004 – REVISED SEPTEMBER 2010 www.ti.com Typical Performance Characteristics (continued) Crosstalk Rejection vs. Frequency (LMV772/LMV772Q/LMV774) 140 VS = 5V CROSSTALK REJECTION (dB) 120 100 VS = 2.7V 80 60 40 20 0 100 1k 10k 100k 600k FREQUENCY (Hz) Application Note LMV771/LMV772/LMV772Q/LMV774 The LMV771/LMV772LMV772Q/LMV774 are a family of precision amplifiers with very low noise and ultra low offset voltage.
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LMV771, LMV772, LMV774 www.ti.com SNOSA04F – MAY 2004 – REVISED SEPTEMBER 2010 There are two stages in this amplifier. The last stage, output stage, is a differential amplifier. In an ideal case the two amplifiers of the first stage, input stage, would be set up as buffers to isolate the inputs. However they cannot be connected as followers because of real amplifier's mismatch. That is why there is a balancing resistor between the two.
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LMV771, LMV772, LMV774 SNOSA04F – MAY 2004 – REVISED SEPTEMBER 2010 www.ti.com ACTIVE FILTER Active filters are circuits with amplifiers, resistors, and capacitors. The use of amplifiers instead of inductors, which are used in passive filters, enhances the circuit performance while reducing the size and complexity of the filter. The simplest active filters are designed using an inverting op amp configuration where at least one reactive element has been added to the configuration.
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LMV771, LMV772, LMV774 www.ti.com SNOSA04F – MAY 2004 – REVISED SEPTEMBER 2010 dB |H| |HO| -20dB/dec 0 f = fo f (Hz) Figure 8. Lowpass Filter Transfer Function HIGH PASS FILTER In a similar approach, one can derive the transfer function of a high pass filter. A typical first order high pass filter is shown below: C R1 R2 Vi VOUT + Figure 9.
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LMV771, LMV772, LMV774 SNOSA04F – MAY 2004 – REVISED SEPTEMBER 2010 www.ti.com dB |H| |HO| -20dB/dec 0 f = fo f (Hz) Figure 10. Highpass Filter Transfer Function BAND PASS FILTER C2 C1 R2 R1 Vi VOUT + Figure 11. Bandpass Filter Combining a low pass filter and a high pass filter will generate a band pass filter. In this network the input impedance forms the high pass filter while the feedback impedance forms the low pass filter.
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LMV771, LMV772, LMV774 www.ti.com SNOSA04F – MAY 2004 – REVISED SEPTEMBER 2010 |H | dB |HO| -20dB/dec 20dB/dec 0 f1 f (Hz) f2 Figure 12. Bandpass filter Transfer Function STATE VARIABLE ACTIVE FILTER State variable active filters are circuits that can simultaneously represent high pass, band pass, and low pass filters. The state variable active filter uses three separate amplifiers to achieve this task. A typical state variable active filter is shown in Figure 13.
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LMV771, LMV772, LMV774 SNOSA04F – MAY 2004 – REVISED SEPTEMBER 2010 www.ti.com C2 R2 VO1 A2 VO2 + C3 R3 VO2 A3 V O + For A1 the relationship between input and output is: R6 R1 + R4 R5 + R6 R1 -R4 VO1 = R1 V0 + VIN + R5 R1 + R4 R5 + R6 R1 VO2 (20) This relationship depends on the output of all the filters.
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LMV771, LMV772, LMV774 www.ti.com SNOSA04F – MAY 2004 – REVISED SEPTEMBER 2010 1 Zc = C 2 C 3R 2R 3 and Q= C 2R 2 R5 + R6 R1 C 3R 3 R6 R1 + R 4 (26) A design example is shown here: Designing a bandpass filter with center frequency of 10kHz and Quality Factor of 5.5 To do this, first consider the Quality Factor. It is best to pick convenient values for the capacitors. C2 = C3 = 1000pF. Also, choose R1 = R4 = 30kΩ. Now values of R5 and R6 need to be calculated.
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LMV771, LMV772, LMV774 SNOSA04F – MAY 2004 – REVISED SEPTEMBER 2010 www.ti.com 0 -10 -20 GAIN (dB) -30 -40 -50 -60 -70 -80 -90 -100 100 1k 10k 100k 400k FREQUENCY (Hz) Figure 15. Bandpass Filter Frequency Response 0 -10 -20 GAIN (dB) -30 -40 -50 -60 -70 -80 -90 -100 100 1k 10k 100k 400k FREQUENCY (Hz) Figure 16.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 1-Nov-2013 OBSOLETE: TI has discontinued the production of the device. (2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined.
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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 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 LMV771MG SC70 DCK 5 1000 178.0 8.4 2.25 2.45 1.2 4.0 8.0 Q3 LMV771MG/NOPB SC70 DCK 5 1000 178.0 8.4 2.25 2.45 1.2 4.0 8.0 Q3 LMV771MGX/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) LMV771MG SC70 DCK 5 1000 210.0 185.0 35.0 LMV771MG/NOPB SC70 DCK 5 1000 210.0 185.0 35.0 LMV771MGX/NOPB SC70 DCK 5 3000 210.0 185.0 35.0 LMV772MAX SOIC D 8 2500 367.0 367.0 35.0 LMV772MAX/NOPB SOIC D 8 2500 367.0 367.0 35.0 LMV772MM VSSOP DGK 8 1000 210.0 185.0 35.
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