Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsLinear ICsLinear IC - Op-amp Multi-purpose SOT 23 5

LMV721-N, LMV722-N

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SNOS414I –AUGUST 1999–REVISED AUGUST 2013

LMV721-N/LMV722 10MHz, Low Noise, Low Voltage, and Low Power Operational Amplifier

Check for Samples: LMV721-N, LMV722-N

FEATURES

DESCRIPTION

The LMV721-N (Single) and LMV722 (Dual) are low

• (For Typical, 5 V Supply Values; Unless

noise, low voltage, and low power op amps, that can

Otherwise Noted)

be designed into a wide range of applications. The

• Ensured 2.2V and 5.0V Performance

LMV721-N/LMV722 has a unity gain bandwidth of

• Low Supply Current LMV721-N/2

10MHz, a slew rate of 5V/us, and a quiescent current

of 930uA/amplifier at 2.2V.

930µA/Amplifier at 2.2V

• High Unity-Gain Bandwidth 10MHz

The LMV721-N/722 are designed to provide optimal

performance in low voltage and low noise systems.

• Rail-to-Rail Output Swing

They provide rail-to-rail output swing into heavy

– at 600Ω Load 120mV from Either Rail at

loads. The input common-mode voltage range

2.2V

includes ground, and the maximum input offset

– at 2kΩ Load 50mV from Either Rail at 2.2V

voltage are 3.5mV (Over Temp) for the LMV721-

N/LMV722. Their capacitive load capability is also

• Input Common Mode Voltage Range Includes

good at low supply voltages. The operating range is

Ground

from 2.2V to 5.5V.

• Silicon Dust, SC70-5 Package 2.0x2.0x1.0 mm

The chip is built with TI's advanced Submicron

• Input Voltage Noise 9 nV/√Hz at f = 1KHz

Silicon-Gate BiCMOS process. The single version,

LMV721-N, is available in 5 pin SOT-23 and a SC70

APPLICATIONS

(new) package. The dual version, LMV722, is

• Cellular an Cordless Phones

available in an SOIC-8 and VSSOP-8 package.

• Active Filter and Buffers

• Laptops and PDAs

• Battery Powered Electronics

Typical Application

Figure 1. A Battery Powered Microphone Preamplifier

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 (25 pages)

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LMV721-N, LMV722-N www.ti.com SNOS414I – AUGUST 1999 – REVISED AUGUST 2013 LMV721-N/LMV722 10MHz, Low Noise, Low Voltage, and Low Power Operational Amplifier Check for Samples: LMV721-N, LMV722-N FEATURES DESCRIPTION • The LMV721-N (Single) and LMV722 (Dual) are low noise, low voltage, and low power op amps, that can be designed into a wide range of applications. The LMV721-N/LMV722 has a unity gain bandwidth of 10MHz, a slew rate of 5V/us, and a quiescent current of 930uA/amplifier at 2.2V.
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LMV721-N, LMV722-N SNOS414I – AUGUST 1999 – REVISED AUGUST 2013 Absolute Maximum Ratings ESD Tolerance www.ti.com (1) (2) (3) Human Body Model 2000V Machine Model 100V Differential Input Voltage ± Supply Voltage Supply Voltage (V+ – V−) 6V Soldering Information Infrared or Convection (20 sec.) 235°C −65°C to 150°C Storage Temp. Range Junction Temperature (1) (4) 150°C Absolute Maximum Ratings indicate limits beyond which damage to the device may occur.
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LMV721-N, LMV722-N www.ti.com SNOS414I – AUGUST 1999 – REVISED AUGUST 2013 2.2V DC Electrical Characteristics (continued) Unless otherwise specified, all limits specified for TJ = 25°C. V+ = 2.2V, V− = 0V, VCM = V+/2, VO = V+/2 and R L > 1 MΩ. Boldface limits apply at the temperature extremes. Parameter VO Test Conditions + Output Swing RL = 600Ω to V /2 Output Current IS Supply Current (1) (2) Limit Units 2.125 2.090 2.065 V min 0.071 0.120 0.145 V max 2.177 2.150 2.125 V min 0.
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LMV721-N, LMV722-N SNOS414I – AUGUST 1999 – REVISED AUGUST 2013 www.ti.com 5V DC Electrical Characteristics (continued) Unless otherwise specified, all limits specified for TJ = 25°C. V+ = 5V, V− = 0V, VCM = V+/2, VO = V+/2 and RL > 1 MΩ. Boldface limits apply at the temperature extremes. Parameter AV Large Signal Voltage Gain VO Output Swing Test Conditions Typ Output Current IS Supply Current Limit (2) Units RL = 600Ω VO = 0.75V to 4.80V 87 80 70 dB min RL = 2kΩ, VO = 0.70V to 4.
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LMV721-N, LMV722-N www.ti.com SNOS414I – AUGUST 1999 – REVISED AUGUST 2013 Typical Performance Characteristics Supply Current vs. Supply Voltage (LMV721-N) Sourcing Current vs. Output Voltage (VS = 2.2V) Figure 2. Figure 3. Sourcing Current vs. Output Voltage (VS = 5V) Sinking Current vs. Output Voltage (VS = 2.2V) Figure 4. Figure 5. Sinking Current vs. Output Voltage (VS = 5V) Output Voltage Swing vs. Supply Voltage (RL = 600Ω) Figure 6. Figure 7.
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LMV721-N, LMV722-N SNOS414I – AUGUST 1999 – REVISED AUGUST 2013 www.ti.com Typical Performance Characteristics (continued) 6 Output Voltage Swing vs. Suppy Voltage (RL = 2kΩ) Input Offset Voltage vs. Input Common-Mode Voltage Range VS = 2.2V Figure 8. Figure 9. Input Offset Voltage vs. Input Common-Mode Voltage Range VS = 5V Input Offset Voltage vs. Supply Voltage (VCM = V+/2) Figure 10. Figure 11. Input Voltage vs. Output Voltage (VS = 2.2V, RL = 2kΩ) Input Voltage vs.
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LMV721-N, LMV722-N www.ti.com SNOS414I – AUGUST 1999 – REVISED AUGUST 2013 Typical Performance Characteristics (continued) Input Voltage Noise vs. Frequency Input Current Noise vs. Frequency Figure 14. Figure 15. +PSRR vs. Frequency −PSRR vs. Frequency Figure 16. Figure 17. CMRR vs. Frequency Gain and Phase Margin vs. Frequency (VS = 2.2V, RL 600Ω) Figure 18. Figure 19.
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LMV721-N, LMV722-N SNOS414I – AUGUST 1999 – REVISED AUGUST 2013 www.ti.com Typical Performance Characteristics (continued) Gain and Phase Margin vs. Frequency (VS = 5V, RL 600Ω) Slew Rate vs. Supply Voltage Figure 20. Figure 21. THD vs. Frequency Figure 22.
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LMV721-N, LMV722-N www.ti.com SNOS414I – AUGUST 1999 – REVISED AUGUST 2013 APPLICATION NOTES BENEFITS OF THE LMV721-N/722 SIZE The small footprints of the LMV721-N/722 packages save space on printed circuit boards, and enable the design of smaller electronic products, such as cellular phones, pagers, or other portable systems. The low profile of the LMV721-N/722 make them possible to use in PCMCIA type III cards. Signal Integrity Signals can pick up noise between the signal source and the amplifier.
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LMV721-N, LMV722-N SNOS414I – AUGUST 1999 – REVISED AUGUST 2013 www.ti.com Figure 24. Pulse Response of the LMV721-N Circuit in Figure 23 The circuit in Figure 25 is an improvement to the one in Figure 23 because it provides DC accuracy as well as AC stability. If there were a load resistor in Figure 23, the output would be voltage divided by RISO and the load resistor. Instead, in Figure 25, RF provides the DC accuracy by using feed-forward techniques to connect VIN to RL.
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LMV721-N, LMV722-N www.ti.com SNOS414I – AUGUST 1999 – REVISED AUGUST 2013 TYPICAL SINGLE-SUPPLY APPLICATION CIRCUITS Difference Amplifier The difference amplifier allows the subtraction of two voltages or, as a special case, the cancellation of a signal common to two inputs. It is useful as a computational amplifier, in making a differential to single-ended conversion or in rejecting a common mode signal. Figure 27.
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LMV721-N, LMV722-N SNOS414I – AUGUST 1999 – REVISED AUGUST 2013 www.ti.com Two-op-amp Instrumentation Amplifier A two-op-amp instrumentation amplifier can also be used to make a high-input impedance DC differential amplifier (Figure 29). As in the two-op-amp circuit, this instrumentation amplifier requires precise resistor matching for good CMRR. R4 should equal to R1 and R3 should equal R2. Figure 29.
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LMV721-N, LMV722-N www.ti.com SNOS414I – AUGUST 1999 – REVISED AUGUST 2013 Figure 31. Simple Low-Pass Active Filter (5) Figure 32. Frequency Response of Simple Low-pass Active Filter in Figure 31 Note that the single-op-amp active filters are used in to the applications that require low quality factor, Q(≤ 10), low frequency (≤ 5KHz), and low gain (≤ 10), or a small value for the product of gain times Q(≤ 100).
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LMV721-N, LMV722-N SNOS414I – AUGUST 1999 – REVISED AUGUST 2013 www.ti.com Here is a LMV721-N used as a microphone preamplifier. Since the LMV721-N is a low noise and low power op amp, it makes it an ideal candidate as a battery powered microphone preamplifier. The LMV721-N is connected in an inverting configuration. Resistors, R1 = R2 = 4.7kΩ, sets the reference half way between VCC = 3V and ground. Thus, this configures the op amp for single supply use.
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LMV721-N, LMV722-N www.ti.com SNOS414I – AUGUST 1999 – REVISED AUGUST 2013 REVISION HISTORY Changes from Revision G (March 2013) to Revision H • 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 TBD: The Pb-Free/Green conversion plan has not been defined. Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
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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) LMV721M5 SOT-23 DBV 5 1000 178.0 8.4 B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 3.2 3.2 1.4 4.0 8.0 Q3 LMV721M5/NOPB SOT-23 DBV 5 1000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LMV721M5X/NOPB SOT-23 DBV 5 3000 178.0 8.4 3.2 3.2 1.4 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) LMV721M5 SOT-23 DBV 5 1000 210.0 185.0 35.0 LMV721M5/NOPB SOT-23 DBV 5 1000 210.0 185.0 35.0 LMV721M5X/NOPB SOT-23 DBV 5 3000 210.0 185.0 35.0 LMV721M7 SC70 DCK 5 1000 210.0 185.0 35.0 LMV721M7/NOPB SC70 DCK 5 1000 210.0 185.0 35.0 LMV721M7X SC70 DCK 5 3000 210.0 185.0 35.
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