General description

LMC7111 is a SOT 23-5 package that saves space-saving CMOS computing amplifiers. This makes LMC7111 an ideal choice for space and weight critical signs. The extensive co -mode input range enables the battery monitoring circuit V+power supply of the above signal. The main benefit of small packaging is that the most obvious is small portable electronic devices, such as mobile phones, paging machines and portable computers. Small amplifiers can be placed where the need is simplified.

Features

Micro 5 stitches SOT23 Packaging save space

Very wide co -mode input range

at 2.7V, 5V The typical power supply current of

5V is 25 μA

50 kHz 5V gain bandwidth

Similar to the popular LMC6462

under 100K load under 100K load , Export to the range of power rail 20 MV

Good capacitor load driver

Application

Mobile communication

Portable computing

battery The current sensing of the charger

Reference voltage buffer

Sensor interface

N's N stable bias of arsenic radio frequency amplifiers

Absolute maximum rated value ( Note 1)

ESD tolerance (Note 2)

SOT23 component 2000V

MDIP component 1500V

Differential input voltage ± power voltage

] Input/output pins voltage (V+)+0.3 volts, (Voltan-) 0.3 volts

Power voltage (v+ v ) 11 volts [123 123 ]

The current at the input pin ± 5 ma

The current at the output pin (Note 3) ± 30 ma

Power pins current 30 mAh

] Diversion temperature. (Welding, 10 seconds) 260 ; C

Storage temperature range 65 ; C to+150 ; 730; C

working rated value (Note 1)

Power voltage 2.5V ≤V+≤11v

Concluding temperature range

LMC7111ai, LMC7111bi #872222 40 ; c≤tj≤+85 ; C

Thermal resistance (θja)

8 -needle MDIP 115 ; C/W

5 -needle SOT23 325 ; C/W

2.7 V DC Power Fertility

Unless there are other regulations, TJ 25 ; C, V+ 2.7V, V 0V, vcm VO V. 1 m . Bold facial restrictions are suitable for extreme temperature.

2.7V AC electrical characteristics

Unless there are other regulations, TJ 25 ; C, V+ 2.7V, V 0V , VCM VO V All guarantees+/2 and RL GT; 1 m . Bold facial restrictions are suitable for extreme temperature.

Note 1: Absolute maximum rated value indicates the limit value that may be damaged by the device. The working conditions of the work are designed to play the function of the equipment, but the specific performance cannot be guaranteed. Please refer to the electrical characteristics about the specifications and test conditions of the guarantee.

Note 2: The human model is 1.5 k , and the series 100 PF.

Note 3: Applicable to single power and sub -supply operations. Continuous short -circuit operations at higher environmental temperatures can lead to maximum permission temperature at more than 150 ° C.

Note 4: The maximum power consumption is the functions of TJ (MAX), θJa, and TA. The maximum allowable power consumption at any ambient temperature is pd (TJ (maximum) ta)/θJa. All numbers are suitable for packaging directly welded to the PC board.

Note 5: Typical values represent the most likely parameter specifications.

Note 6: All limits are guaranteed by testing or statistical analysis.

Note 7: V+ 2.7V, VCM 1.35V, RL connected 1.35V. Source pole test, 1.35V ≤VO ≤ 2.7V; sinking test, 0.5V ≤VO ≤ 1.35V.

Note 8: connected as a voltage follower, and the order input is 1.0V. The specified number is the slower in the positive and negative conversion rate. Reference input, V+ 2.7V and RL 100 K , connected to 1.35V ampel, motivated by 1 kHz, generated VO 1VPP.

Note 9: The bias current of design and processing guarantee.

5V AC electrical characteristics

Unless there are other regulations, TJ 25 ; C, V+ 5V, V 0V, vcm vo v +/2 and RL GT; 1 M . Rough body limit is suitable for extreme temperature.

Note 10: Absolute maximum rated value indicates the limit value that may cause damage. The working conditions of the work are designed to play the function of the equipment, but the specific performance cannot be guaranteed. Please refer to the electrical characteristics about the specifications and test conditions of the guarantee.

Note 11: Human model, 1.5 k series 100 PF.

Note 12: Applicable to single power and sub -supply operations. Continuous short -circuit operations at higher environmental temperatures can lead to maximum permission temperature at more than 150 ° C.

Note 13: The maximum power consumption is the functions of TJ (MAX), θJa, and TA. The maximum allowable power consumption at any ambient temperature is pd (TJ (maximum) ta)/θJa. All numbers are suitable for packaging directly welded to the PC board.

Note 14: Typical values represent the most likely parameter specifications.

Note 15: All limits are guaranteed by testing or statistical analysis.

Note 16: V+ 5V, VCM 2.5V, RL connected 2.5V. Source pole test, 2.5V ≤VO ≤ 5.0V. Sinking test, 0.5V ≤VO ≤ 2.5V.

Note 17: As a voltage follower connection, the order input is 1.0V. The specified number is one of the slower transition rate. The negative conversion rate is faster. Enter reference, V+ 5V, RL 100K and connected to 1.5V. Use 1 kHz to motivate ampel to generate VO 1VPP.

Note 18: The bias current of design and processing guarantee.

10V AC electrical characteristics

Unless there are other regulations, TJ 25 ; C, V+ 10V, V 0V, vcm vo v +/2 and RL GT; 1 m . Bold facial restrictions are suitable for extreme temperature.

Note 19: Absolute maximum rated value indicates the limit value that may cause damage. The working conditions of the work are designed to play the function of the equipment, but the specific performance cannot be guaranteed. Please refer to the electrical characteristics about the specifications and test conditions of the guarantee.

Note 20: Human model, 1.5 k series 100 PF.

Note 21: Applicable to single power supply and division operation. Continuous short -circuit operations at higher environmental temperatures can lead to maximum permission temperature at more than 150 ° C.

Note 22: The maximum power consumption is the functions of TJ (MAX), θJa, and TA. The maximum allowable power consumption at any ambient temperature is pd (TJ (maximum) ta)/θJa. All numbers are suitable forWelded directly to the package on the PC board.

Note 23: Typical values represent the most likely parameter specifications.

Note 24: All limits are guaranteed by test or statistical analysis.

Note 25: V+ 10V, VCM 5V, RL connected 5V. Source pole test, 5V ≤VO ≤ 10V; sinking test, 0.5V ≤VO≤5V.

Note 26: As a voltage follower connection, the order input is 1.0V. The specified number is the slower in the positive and negative conversion rate. Reference input, V+ 10V and RL 100K and connect to 5V. Ampel, use 1 kHz to motivate, generate VO 2VPP.

Note 27: The operation close to the absolute maximum value will adversely affect the reliability.

Typical performance features

TA 25 ; ]

Application information

The benefits of LMC711 The miniature amplifier packaged by SOT 23-5 packaged in SOT 23-5, (0.120 x 0.118 inches, 3.05 x 3.00 mm ) Save space printing circuit boards and make smaller electronic products. Because they are easier to carry, many customers like smaller and lighter products. The height (0.056 inches, 1.43 mm) of the height micro -amplifier enables it to be used in the PCMCIA III card.

Signal integrity

Signal can be at the signal source and amplifier. By using a smaller amplifier component, the miniature amplifier can be placed closer to the signal source, reducing noise pickup and improving signal integrity. This can also be placed next to the destination, such as the reference buffer converter simulated to the number.

Simplified board layout

This micro -amplifier can simplify the circuit board layout in several aspects. First of all, placing a amplifier where you need to be ampel instead of the signal routing to double or four -way device. Long PC tracking may be avoided. By using multiple miniature Ampel instead of Shuang'an or four -dollar group, complicated signal routing and possible string can be reduced. The DIP

LMC71111 amplifier that can be used for prototypes is encapsulated in the traditional 8 -pin DIP software package. It can be used for prototype design and evaluation. The surface paste is needed at the early stage of the project.

Low -power supply current

The typical 25μA power supply current of LMC7111 extends the battery life in portable applications, and the size of the battery is allowed to reduce the size of the battery in some applications.

Wide voltage range

The characteristics of LMC7111 are 2.7V, 3V, 3.3V, 5V and 10V. Performance data is provided under these commonly used voltage. This wide voltage range makes the LMC7111 a device battery that may change during the entire life

2.0 Input common mode

The voltage range is when the input voltage exceeds the negative power supply voltage. Absolutely maximum input voltage exceeds 300 millivol to any guide rail at room temperature. Voltage greatly exceeds this maximum rated value, which will cause excessive current inflow or output pins, which seriously affects reliability. Applications that exceed this rated value must limit the maximum input current from the outside to ± 5 mA, and the input resistance is shown in Figure 1.

3.0 tolerance load tolerance

LMC7111 can usually directly drive 300 PF load vs 10V, unit gain, no oscillation. Unified income followers are the most sensitive configuration. Direct capacitor load reduces the phase habits of the computing amplifier. The combination of the operation amplifier output impedance and the capacitor causes phase lag. This can cause the underwriting pulse response or oscillation. Capacity load compensation can be isolated with resistance, as shown in Figure 2. This simple technology is very useful for the capacitor input of isolated multi -way relics and A/D converters.

4.0 compensation input capacitance

When using a large value feedback resistor as a very large feedback resistor, (usually gt; 500 k ) The feedback resistance can be generated by the parasitic of the sensor, the optoelectronics diode and the circuit board to reduce the phase margin. The impact of input capacitors can be added by adding a feedback capacitor. The feedback capacitor (as shown in Figure 3), CF is first

This usually causes serious excessive compensation. Printing circuit boards may be large or smaller than test boards, so the actual best CF value may be different. The CF value should be checked on the actual circuit. (Refer to the data table of the CMOS amplifier of the LMC660 four -line group for more detailed discussions.)

5.0 output swing

LMC7111 output The power rail will be used for 10 k load and 20 MV guide rails within 100 mv range. This makes the LMC7111 is very useful in driving. By approaching the power, LMC7111 can keep the transistor open or turn around.

6.0 biased arsenide 镓 镓 镓 镓 镓 [[

The size of the capacity of SOT23-5 LMC7111 makes it a stable negative bias for other integrated circuits. The size of LMC7111 and LM4040 is very small, and the space occupied is very small.

7.0 A-D converter's reference buffer

LMC7111 can be used as a voltage reference buffer modulus. This is most suitable for the A-TO-D converter with a reference input as a static load, such as Dual slope points A-DS. The input converter is a dynamic load (reference current changes over time) that may require faster devices, such as LMC7101 or LMC7131. The small size of the LMC7111 allows it to place it in the reference input. Low power current (typical value is 25 μA) saving power. For the more accurate A-TO-D reference input and lower offset voltage, see the LMC6462 data table. The performance of LMC6462 and LMC7111. LMC6462 has two levels to reduce input voltage offset.

Application information (continued)

8.0 double and four -way equipment with similar functions

Performance

lmc6462 It is similar to LMC6464 with LMC71111. They are packed and packaged in traditional holes and surfaces. For details, see LMC6462/4 product introduction.

9.0 spice macro model

A spice macro model can be used for LMC7111. This model includes the following simulation:

Enter the common mode voltage range

frequency and transient response

Static and dynamic power current

output swing depends on the load depends on the load Conditions and macro models list more feature disks.

10.0 SOT23-5 Micro

Device

National Semiconductor SOT23 micro encapsulation, including amplifier, voltage and voltage regulator. These devices include -lMC7101 1MHz gain bandwidth rail-to-rail input and output amplifier-high input impedance and high gain, 700 μA typical current 2.7V, 3V, 5V, and 15V specifications. LM7131 miniature video amplifier, the gain bandwidth is 70MHz. It is specified as 3V, 5V and ± 5V power supply. The LMC7211 comparator is in a small package, with rail pairing input and push -pull output. Typical power supply current is 7 μA. Typical 7 μs transmission delay. Specifically at 2.7V, 5V and 15V power supply. LMC7221 comparator, with a road leakage output for a hybrid voltage system. Similar to LMC7211, but the output can use resistance voltage differently from the upper pull. LP2980 micro -power SOT 50 mAh ultra low pressure difference regulator. LM4040 precision micro power parallel voltage benchmark. Fixed voltage 2.5000V, 4.096V, 5.000V, 8.192V and 10.000V. LM4041 precision micro power parallel parallel voltage source 1.225V can be adjusted.