National Semiconductor LM7341 Technical data

October 13, 2008

LM7341 Rail-to-Rail Input/Output ±15V, 4.6 MHz GBW, Operational Amplifier in SOT-23 Package

LM7341 Rail-to-Rail Input/Output, ±15V, 4.6 MHz GBW, Operational Amplifier in SOT-23 Package

General Description

The LM7341 is a rail-to-rail input and output amplifier in a small SOT-23 package with a wide supply voltage and temperature range. The LM7341 has a 4.6 MHz gain bandwidth and a 1.9 volt per microsecond slew rate, and draws 0.75 mA of supply current at no load.

The LM7341 is tested at −40°C, 125°C and 25°C with modern automatic test equipment. Detailed performance specifications at 2.7V, ±5V, and ±15V and over a wide temperature range make the LM7341 a good choice for automotive, industrial, and other demanding applications.

Greater than rail-to-rail input common mode range with a minimum 76 dB of common mode rejection at ±15V makes the LM7341 a good choice for both high and low side sensing applications.

LM7341 performance is consistent over a wide voltage range, making the part useful for applications where the supply voltage can change, such as automotive electrical systems and battery powered electronics.

The LM7341 uses a small SOT23-5 package, which takes up little board space, and can be placed near signal sources to reduce noise pickup.

Features

(VS = ±15V, TA = 25°C, typical values.)

Tiny 5-pin SOT-23 package saves space

■

Greater than rail-to-rail input CMVR −15.3V to 15.3V

■

Rail-to-rail output swing −14.84V to 14.86V

■

Supply current 0.7 mA

■

Gain bandwidth 4.6 MHz

■

Slew Rate 1.9 V/µs

■

Wide supply range 2.7V to 32V

■

High power supply rejection ratio 106 dB

■

High common mode rejection ratio 115 dB

■

Excellent gain 106 dB

■

Temperature range −40°C to 125°C

■

Tested at −40°C, 125°C and 25°C at 2.7V, ±5V and ±15V

■

Applications

Automotive

■

Industrial robotics

■

Sensor output buffers

■

Multiple voltage power supplies

■

Reverse biasing of photodiodes

■

Low current optocouplers

■

High side sensing

■

Comparator

■

Battery chargers

■

Test point output buffers

■

Below ground current sensing

■

Typical Performance Characteristics

Open Loop Frequency Response

20206046

Open Loop Frequency Response

20206047

Absolute Maximum Ratings (Note 1)

If Military/Aerospace specified devices are required,

LM7341

please contact the National Semiconductor Sales Office/ Distributors for availability and specifications.

ESD Tolerance (Note 2) Human Body Model 2000V Machine Model 200V Charge-Device Model 1000V VIN Differential

Voltage at Input/Output Pin (V+) + 0.3V, (V−) −0.3V

Supply Voltage (VS = V+ − V−)

Input Current ±10 mA Output Current(Note 3) ±20 mA

±15V

35V

Power Supply Current 25 mA Soldering Information Infrared or Convection (20 sec) 235°C Wave Soldering Lead Temp.

(10 sec.) 260°C Storage Temperature Range −65°C to 150°C Junction Temperature (Note 4) 150°C

Operating Ratings (Note 1)

Supply Voltage (VS = V+ − V−)

Temperature Range (Note 4) −40°C to 125°C

Package Thermal Resistance (θJA)

5-Pin SOT-23 325°C/W

2.7V Electrical Characteristics

Unless otherwise specified, all limits guaranteed for TA = 25°C, V+ = 2.7V, V− = 0V, VCM = 0.5V, V

1.35V. Boldface limits apply at the temperature extremes

Symbol Parameter Conditions Min

(Note 6)

V

OS

Input Offset Voltage VCM = 0.5V and VCM = 2.2V −4

−5

TCV

I

B

Input Offset Voltage Temperature Drift ±2

OS

Input Bias Current VCM = 0.5V −180

−200

VCM = 2.2V 30 60

I

OS

CMRR Common Mode Rejection Ratio

Input Offset Current VCM = 0.5V and VCM = 2.2V 1 40

0V ≤ VCM ≤ 1.0V

82

80

0V ≤ VCM ≤ 2.7V

62

60

PSRR Power Supply Rejection Ratio

2.7V ≤ VS ≤ 30V VCM = 0.5V

86

84

CMVR Common Mode Voltage Range CMRR > 60 dB −0.3 0.0

2.7 3.0

A

VOL

V

OUT

Open Loop Voltage Gain

Output Voltage Swing High

0.5V ≤ VO ≤ 2.2V

RL = 10 kΩ to 1.35V

RL = 10 kΩ to 1.35V VID = 100 mV

RL = 2 kΩ to 1.35V

12

8

50 120

95 150

VID = 100 mV

Output Voltage Swing Low

RL = 10 kΩ to 1.35V VID = −100 mV

RL = 2 kΩ to 1.35V

55 120

100 150

VID = −100 mV

I

OUT

I

S

Output Current Sourcing, V

VID = 200 mV

Sinking, V VID = −200 mV

OUT

= 0V

6

4

5

3

Supply Current VCM = 0.5V and VCM = 2.2V 0.6 0.9

SR Slew Rate ±1V Step 1.5

= 1.35V and RL > 1 MΩ to

OUT

Typ

(Note 5)

±0.2 +4

−90

106

80

106 dB

65

12

10

Max

(Note 6)

+5

70

50

150

200

150

200

1.0

2.5V to 32V

Units

mV

μV/°C

nA

dB

V

V/mV

mV from

either rail

mA

V/μs

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LM7341

Symbol Parameter Conditions Min

(Note 6)

GBW Gain Bandwidth

e

n

i

n

Input Referred Voltage Noise Density f = 1 kHz 35

Input Referred Voltage Noise Density f = 1 kHz 0.28

f = 100 kHz, RL = 100 kΩ

3.6 MHz

Typ

(Note 5)

Max

(Note 6)

Units

nV/

pA/

THD+N Total Harmonic Distortion + Noise f = 10 kHz −66 dB

t

PD

t

r

t

f

Propagation Delay Overdrive = 50 mV (Note 7) 4

Overdrive = 1V (Note 7) 3

µs

Rise Time 20% to 80% (Note 7) 1 µs

Fall Time 80% to 20% (Note 7) 1 µs

±5V Electrical Characteristics

Unless otherwise specified, all limits guaranteed for TA = 25°C, V+ = +5V, V− = −5V, VCM = V

Boldface limits apply at the temperature extremes.

Symbol Parameter Conditions Min

(Note 6)

V

OS

TCV

I

B

Input Offset Voltage VCM = −4.5V and VCM = 4.5V −4

Input Offset Voltage Temperature Drift ±2

OS

Input Bias Current VCM = −4.5V −200

−250

VCM = 4.5V 35 70

I

OS

CMRR Common Mode Rejection Ratio

Input Offset Current VCM = −4.5V and VCM = 4.5V 1 40

−5V ≤ VCM ≤ 3V

−5V ≤ VCM ≤ 5V

PSRR Power Supply Rejection Ratio

CMVR Common Mode Voltage Range

A

VOL

Open Loop Voltage Gain

2.7V ≤ VS ≤ 30V, VCM = −4.5V

CMRR ≥ 65 dB

−4V ≤ VO ≤ 4V

RL = 10 kΩ to 0V

V

OUT

Output Voltage Swing High

RL = 10 kΩ to 0V, VID = 100 mV

RL = 2 kΩ to 0V, VID = 100 mV

Output Voltage Swing Low

RL = 10 kΩ to 0V VID = −100 mV

RL = 2 kΩ to 0V VID = −100 mV

I

OUT

Output Current Sourcing, V

OUT

= −5V

VID = 200 mV

Sinking, V

OUT

= 5V

VID = −200 mV

I

S

Supply Current VCM = −4.5V and VCM = 4.5V 0.65 1.0

SR Slew Rate ±4V Step 1.7

GBW Gain Bandwidth

f = 100 kHz, RL = 100 kΩ

= 0V and RL > 1 MΩ to 0V.

OUT

Typ

(Note 5)

Max

(Note 6)

Units

±0.2 +4

−5

+5

μV/°C

−95

80

50

84

112

82

72

92

70

86

106

84

−5.3 −5.0

5.0 5.3

20

12

110

V/mV

80 150

200

170 300

400

90 150

mV from

either rail

200

210 300

400

6

11

4

6

12

4

1.1

4.0 MHz

mV

nA

dB

mA

V/μs

V

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Symbol Parameter Conditions Min

LM7341

e

n

i

n

Input Referred Voltage Noise Density f = 1 kHz 33

Input Referred Voltage Noise Density f = 1 kHz 0.26

(Note 6)

Typ

(Note 5)

Max

(Note 6)

THD+N Total Harmonic Distortion + Noise f = 10 kHz −66 dB

t

PD

Propagation Delay Overdrive = 50 mV (Note 7) 8

Overdrive = 1V (Note 7) 6

t

r

t

f

Rise Time 20% to 80% (Note 7) 5 µs

Fall Time 80% to 20% (Note 7) 5 µs

±15V Electrical Characteristics

Unless otherwise specified, all limits guaranteed for TA = 25°C, V+ = 15V, V− = −15V, VCM = V

Boldface limits apply at the temperature extremes

Symbol Parameter Conditions Min

(Note 6)

V

OS

Input Offset Voltage V

= −14.5V and VCM = 14.5V −4

CM

−5

TCV

I

B

Input Offset Voltage Temperature Drift ±2

OS

Input Bias Current VCM = −14.5V −250

−300

VCM = 14.5V 40 80

I

OS

CMRR Common Mode Rejection Ratio

Input Offset Current VCM = −14.5V and VCM = 14.5V 1 40

−15V ≤ VCM ≤12V

84

82

−15V ≤ VCM ≤ 15V

78

76

PSRR Power Supply Rejection Ratio

2.7V ≤ VS ≤ 30V, VCM = −14.5V

86

84

CMVR Common Mode Voltage Range CMRR > 80 dB −15.3 −15.0

15.0 15.3

A

V

I

OUT

I

S

VOL

OUT

Open Loop Voltage Gain

Output Voltage Swing High

Output Voltage Swing Low

Output Current (Note 4)

−13V ≤ VO ≤ 13V

RL = 10 kΩ to 0V

RL = 10 kΩ to 0V VID = 100 mV

RL = 10 kΩ to 0V VID = −100 mV

Sourcing, V

OUT

= −15V

VID = 200 mV

Sinking, V

OUT

= 15V

VID = −200 mV

25

15

5

3

8

5

Supply Current VCM = −14.5V and VCM = 14.5V 0.7 1.2

SR Slew Rate ±12V Step 1.9

GBW Gain Bandwidth

e

n

i

n

Input Referred Voltage Noise Density f = 1 kHz 31

Input Referred Voltage Noise Density f = 1 kHz 0.27

f = 100 kHz, RL = 100 kΩ

THD+N Total Harmonic Distortion + Noise f = 10 kHz −65 dB

t

PD

Propagation Delay Overdrive = 50 mV (Note 7) 17

Overdrive = 1V (Note 7) 12

= 0V and RL > 1 MΩ to 0V.

OUT

Typ

(Note 5)

Max

(Note 6)

±0.2 +4

+5

−110

90

50

115

100

106

200

135 300

400

160 300

400

10

13

1.3

4.6 MHz

Units

nV/

pA/

µs

Units

mV

μV/°C

nA

dB

V

V/mV

mV from

either rail

mA

V/μs

nV/

pA/

µs

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LM7341

Symbol Parameter Conditions Min

(Note 6)

t

r

t

f

Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is intended to be functional, but specific performance is not guaranteed. For guaranteed specifications and the test conditions, see the Electrical Characteristics.

Note 2: Human Body Model, applicable std. MIL-STD-883, Method 3015.7. Machine Model, applicable std. JESD22-A115-A (ESD MM std. of JEDEC)

Field-Induced Charge-Device Model, applicable std. JESD22-C101-C (ESD FICDM std. of JEDEC).

Note 3: Applies to both single-supply and split-supply operation. Continuous short circuit operation at elevated ambient temperature can result in exceeding the maximum allowed junction temperature of 150°C.

Note 4: The maximum power dissipation is a function of T PD = (T

Note 5: Typical values represent the most likely parametric norm as determined at the time of characterization. Actual typical values may vary over time and will also depend on the application and configuration. The typical values are not tested and are not guaranteed on shipped production material.

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

Note 7: The maximum differential voltage between the input pins is VIN Differential = ±15V.

Rise Time 20% to 80% (Note 7) 13 µs

Fall Time 80% to 20% (Note 7) 13 µs

, θJA. The maximum allowable power dissipation at any ambient temperature is

− TA)/θJA. All numbers apply for packages soldered directly unto a PC board.

J(MAX)

Typ

(Note 5)

Max

(Note 6)

Connection Diagram

5-Pin SOT-23

Units

Top View

20206002

Ordering Information

Package Part Number Package Marking Transport Media NSC Drawing

5-Pin SOT-23

LM7341MF

AV4A

LM7341MFX 3k Units Tape and Reel

1k Units Tape and Reel

MF05ALM7341MFE 250 Units Tape and Reel

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Typical Performance Characteristics

LM7341

Output Swing vs. Sourcing Current

20206030

Output Swing vs. Sinking Current

20206033

Output Swing vs. Sinking Current

20206031

Output Swing vs. Sourcing Current

20206032

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20206034

Output Swing vs. Sinking Current

20206035